diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 13:07:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 13:07:24 -0700 |
| commit | 55a7d4b85ca1f723d26b8956e8faeff730d0d240 (patch) | |
| tree | 4f8e9460bbd2096971215b67321c14a14c3c1d3f | |
| parent | aefbef10e3ae6e2c6e3c54f906f10b34c73a2c66 (diff) | |
| parent | 07834743f42b4f27a21010cf5bab483b3ae3d13d (diff) | |
| download | talos-obmc-linux-55a7d4b85ca1f723d26b8956e8faeff730d0d240.tar.gz talos-obmc-linux-55a7d4b85ca1f723d26b8956e8faeff730d0d240.zip | |
Merge tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linux
Pull Renesas H8/300 architecture re-introduction from Yoshinori Sato.
We dropped arch/h8300 two years ago as stale and old, this is a new and
more modern rewritten arch support for the same architecture.
* tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linux: (27 commits)
h8300: fix typo.
h8300: Always build dtb
h8300: Remove ARCH_WANT_IPC_PARSE_VERSION
sh-sci: Get register size from platform device
clk: h8300: fix error handling in h8s2678_pll_clk_setup()
h8300: Symbol name fix
h8300: devicetree source
h8300: configs
h8300: IRQ chip driver
h8300: clocksource
h8300: clock driver
h8300: Build scripts
h8300: library functions
h8300: Memory management
h8300: miscellaneous functions
h8300: process helpers
h8300: compressed image support
h8300: Low level entry
h8300: kernel startup
h8300: Interrupt and exceptions
...
123 files changed, 7597 insertions, 28 deletions
@@ -3219,11 +3219,6 @@ N: Dipankar Sarma E: dipankar@in.ibm.com D: RCU -N: Yoshinori Sato -E: ysato@users.sourceforge.jp -D: uClinux for Renesas H8/300 (H8300) -D: http://uclinux-h8.sourceforge.jp/ - N: Hannu Savolainen E: hannu@opensound.com D: Maintainer of the sound drivers until 2.1.x days. diff --git a/Documentation/devicetree/bindings/clock/renesas,h8300-div-clock.txt b/Documentation/devicetree/bindings/clock/renesas,h8300-div-clock.txt new file mode 100644 index 000000000000..36c2b528245c --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,h8300-div-clock.txt @@ -0,0 +1,24 @@ +* Renesas H8/300 divider clock + +Required Properties: + + - compatible: Must be "renesas,sh73a0-h8300-div-clock" + + - clocks: Reference to the parent clocks ("extal1" and "extal2") + + - #clock-cells: Must be 1 + + - reg: Base address and length of the divide rate selector + + - renesas,width: bit width of selector + +Example +------- + + cclk: cclk { + compatible = "renesas,h8300-div-clock"; + clocks = <&xclk>; + #clock-cells = <0>; + reg = <0xfee01b 2>; + renesas,width = <2>; + }; diff --git a/Documentation/devicetree/bindings/clock/renesas,h8s2678-pll-clock.txt b/Documentation/devicetree/bindings/clock/renesas,h8s2678-pll-clock.txt new file mode 100644 index 000000000000..500cdadbceb7 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,h8s2678-pll-clock.txt @@ -0,0 +1,23 @@ +Renesas H8S2678 PLL clock + +This device is Clock multiplyer + +Required Properties: + + - compatible: Must be "renesas,h8s2678-pll-clock" + + - clocks: Reference to the parent clocks + + - #clock-cells: Must be 0 + + - reg: Two rate selector (Multiply / Divide) register address + +Example +------- + + pllclk: pllclk { + compatible = "renesas,h8s2678-pll-clock"; + clocks = <&xclk>; + #clock-cells = <0>; + reg = <0xfee03b 2>, <0xfee045 2>; + }; diff --git a/Documentation/devicetree/bindings/h8300/cpu.txt b/Documentation/devicetree/bindings/h8300/cpu.txt new file mode 100644 index 000000000000..70cd58608f4b --- /dev/null +++ b/Documentation/devicetree/bindings/h8300/cpu.txt @@ -0,0 +1,13 @@ +* H8/300 CPU bindings + +Required properties: + +- compatible: Compatible property value should be "renesas,h8300". +- clock-frequency: Contains the clock frequency for CPU, in Hz. + +Example: + + cpu@0 { + compatible = "renesas,h8300"; + clock-frequency = <20000000>; + }; diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,h8300h-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/renesas,h8300h-intc.txt new file mode 100644 index 000000000000..56e8d82aff34 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,h8300h-intc.txt @@ -0,0 +1,22 @@ +* H8/300H Interrupt controller + +Required properties: + +- compatible: has to be "renesas,h8300h-intc", "renesas,h8300-intc" as fallback. +- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in + interrupts.txt in this directory +- regs: Base address of interrupt controller registers. + +Optional properties: + +- any properties, listed in interrupts.txt, and any standard resource allocation + properties + +Example: + + h8intc: interrupt-controller@fee012 { + compatible = "renesas,h8300h-intc", "renesas,h8300-intc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xfee012 7>; + }; diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,h8s-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/renesas,h8s-intc.txt new file mode 100644 index 000000000000..faded2b1559b --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,h8s-intc.txt @@ -0,0 +1,22 @@ +* H8S Interrupt controller + +Required properties: + +- compatible: has to be "renesas,h8s-intc", "renesas,h8300-intc" as fallback. +- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in + interrupts.txt in this directory +- regs: Base address of interrupt controller registers. + +Optional properties: + +- any properties, listed in interrupts.txt, and any standard resource allocation + properties + +Example: + + h8intc: interrupt-controller@fffe00 { + compatible = "renesas,h8s-intc", "renesas,h8300-intc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xfffe00 24>; + }; diff --git a/Documentation/devicetree/bindings/memory-controllers/renesas,h8300-bsc.txt b/Documentation/devicetree/bindings/memory-controllers/renesas,h8300-bsc.txt new file mode 100644 index 000000000000..cdf406c902e2 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/renesas,h8300-bsc.txt @@ -0,0 +1,12 @@ +* H8/300 bus controller + +Required properties: + - compatible: Must be "renesas,h8300-bsc". + - reg: Base address and length of BSC registers. + +Example. + bsc: memory-controller@fee01e { + compatible = "renesas,h8300h-bsc", "renesas,h8300-bsc"; + reg = <0xfee01e 8>; + }; + diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index ae73bb0e9ad9..7534d46e9ad8 100644 --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt @@ -29,6 +29,7 @@ Required properties: - "renesas,scifa" for generic SCIFA compatible UART. - "renesas,scifb" for generic SCIFB compatible UART. - "renesas,hscif" for generic HSCIF compatible UART. + - "renesas,sci" for generic SCI compatible UART. When compatible with the generic version, nodes must list the SoC-specific version corresponding to the platform first followed by the diff --git a/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt b/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt new file mode 100644 index 000000000000..e8792447a199 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt @@ -0,0 +1,25 @@ +* Renesas H8/300 16bit timer + +The 16bit timer is a 16bit timer/counter with configurable clock inputs and +programmable compare match. + +Required Properties: + + - compatible: must contain "renesas,16bit-timer" + - reg: base address and length of the registers block for the timer module. + - interrupts: interrupt-specifier for the timer, IMIA + - clocks: a list of phandle, one for each entry in clock-names. + - clock-names: must contain "peripheral_clk" for the functional clock. + - renesas,channel: timer channel number. + +Example: + + timer16: timer@ffff68 { + compatible = "reneas,16bit-timer"; + reg = <0xffff68 8>, <0xffff60 8>; + interrupts = <24>; + renesas,channel = <0>; + clocks = <&pclk>; + clock-names = "peripheral_clk"; + }; + diff --git a/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt b/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt new file mode 100644 index 000000000000..9dca3759a0f0 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/renesas,8bit-timer.txt @@ -0,0 +1,25 @@ +* Renesas H8/300 8bit timer + +The 8bit timer is a 8bit timer/counter with configurable clock inputs and +programmable compare match. + +This implement only supported cascade mode. + +Required Properties: + + - compatible: must contain "renesas,8bit-timer" + - reg: base address and length of the registers block for the timer module. + - interrupts: interrupt-specifier for the timer, CMIA and TOVI + - clocks: a list of phandle, one for each entry in clock-names. + - clock-names: must contain "fck" for the functional clock. + +Example: + + timer8_0: timer@ffff80 { + compatible = "renesas,8bit-timer"; + reg = <0xffff80 10>; + interrupts = <36>; + clocks = <&fclk>; + clock-names = "fck"; + }; + diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.txt b/Documentation/devicetree/bindings/timer/renesas,tpu.txt new file mode 100644 index 000000000000..f8b25897fb31 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/renesas,tpu.txt @@ -0,0 +1,21 @@ +* Renesas H8/300 Timer Pluse Unit + +The TPU is a 16bit timer/counter with configurable clock inputs and +programmable compare match. +This implementation support only cascade mode. + +Required Properties: + + - compatible: must contain "renesas,tpu" + - reg: base address and length of the registers block in 2 channel. + - clocks: a list of phandle, one for each entry in clock-names. + - clock-names: must contain "peripheral_clk" for the functional clock. + + +Example: + tpu: tpu@ffffe0 { + compatible = "renesas,tpu"; + reg = <0xffffe0 16>, <0xfffff0 12>; + clocks = <&pclk>; + clock-names = "peripheral_clk"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 246d9d841ad2..798dc538529c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4549,6 +4549,17 @@ T: git git://linuxtv.org/media_tree.git S: Maintained F: drivers/media/usb/stk1160/ +H8/300 ARCHITECTURE +M: Yoshinori Sato <ysato@users.sourceforge.jp> +L: uclinux-h8-devel@lists.sourceforge.jp +W: http://uclinux-h8.sourceforge.jp +T: git git://git.sourceforge.jp/gitroot/uclinux-h8/linux.git +S: Maintained +F: arch/h8300/ +F: drivers/clocksource/h8300_*.c +F: drivers/clk/h8300/ +F: drivers/irqchip/irq-renesas-h8*.c + HARD DRIVE ACTIVE PROTECTION SYSTEM (HDAPS) DRIVER M: Frank Seidel <frank@f-seidel.de> L: platform-driver-x86@vger.kernel.org diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig new file mode 100644 index 000000000000..db589167838c --- /dev/null +++ b/arch/h8300/Kconfig @@ -0,0 +1,76 @@ +config H8300 + def_bool y + select GENERIC_ATOMIC64 + select HAVE_UID16 + select VIRT_TO_BUS + select GENERIC_IRQ_SHOW + select FRAME_POINTER + select GENERIC_CPU_DEVICES + select MODULES_USE_ELF_RELA + select GENERIC_CLOCKEVENTS + select CLKDEV_LOOKUP + select COMMON_CLK + select ARCH_WANT_FRAME_POINTERS + select OF + select OF_IRQ + select OF_EARLY_FLATTREE + select HAVE_MEMBLOCK + select HAVE_DMA_ATTRS + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config NO_IOPORT_MAP + def_bool y + +config GENERIC_CSUM + def_bool y + +config HZ + int + default 100 + +config NR_CPUS + int + default 1 + +source "init/Kconfig" + +source "kernel/Kconfig.freezer" + +source "arch/h8300/Kconfig.cpu" + +menu "Kernel Features" + +source "kernel/Kconfig.preempt" + +source "mm/Kconfig" + +endmenu + +menu "Executable file formats" + +source "fs/Kconfig.binfmt" + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +menu "Kernel hacking" + +source "lib/Kconfig.debug" + +endmenu + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" diff --git a/arch/h8300/Kconfig.cpu b/arch/h8300/Kconfig.cpu new file mode 100644 index 000000000000..8d0ff20c749a --- /dev/null +++ b/arch/h8300/Kconfig.cpu @@ -0,0 +1,99 @@ +config CPU_H8300H + bool + +config CPU_H8S + bool + +config H83069 + bool + select CPU_H8300H + select H8300_TMR16 + select RENESAS_H8300H_INTC + +config H8S2678 + bool + select CPU_H8S + select H8300_TPU + select RENESAS_H8S_INTC + +config RAMKERNEL + bool + +config ROMKERNEL + bool + +menu "Processor type and features" + +choice +prompt "H8/300 platform" + +config H8300_AE3068 + bool "AE-3068/69" + select H83069 + select RAMKERNEL + help + AKI-H8/3068F / AKI-H8/3069F Flashmicom LAN Board Support + More Information. (Japanese Only) + <http://akizukidenshi.com/catalog/default.aspx> + AE-3068/69 Evaluation Board Support + More Information. + <http://www.microtronique.com/ae3069lan.htm> + +config H8300_H8MAX + bool "H8MAX" + select H83069 + select RAMKERNEL + select HAVE_IDE + help + H8MAX Evaluation Board Support + More Information. (Japanese Only) + <http://strawberry-linux.com/h8/index.html> + +config H8300_KANEBEBE + bool "KaneBebe" + select H83069 + select RAMKERNEL + help + KaneBebe Evalition Board Support + More Information. (Japanese Only) + <http://www.nissin-tech.com/2009/10/uclinuxkane-bebe-h83069f.html> + +config H8300H_SIM + bool "H8/300H GDB Simulator" + select H83069 + select ROMKERNEL + help + GDB Simulator Support + More Information. + <http://sourceware.org/sid/> + +config H8S_EDOSK2674 + bool "EDOSK-2674" + select H8S2678 + select RAMKERNEL + help + Renesas EDOSK-2674 Evaluation Board Support + More Information. + <http://www.azpower.com/H8-uClinux/index.html> + <http://www.renesas.eu/products/tools/introductory_evaluation_tools/evaluation_development_os_kits/edosk2674r/edosk2674r_software_tools_root.jsp> + +config H8S_SIM + bool "H8S GDB Simulator" + select H8S2678 + select ROMKERNEL + help + GDB Simulator Support + More Information. + <http://sourceware.org/sid/> + +endchoice + +config H8300_BUILTIN_DTB + string "Builtin DTB" + default "" + +config OFFSET + hex "Load offset" + default 0 + +endmenu diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile new file mode 100644 index 000000000000..0d2d96e52d9f --- /dev/null +++ b/arch/h8300/Makefile @@ -0,0 +1,55 @@ +# +# arch/h8300/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# (C) Copyright 2002-2015 Yoshinori Sato <ysato@users.sourceforge.jp> +# + +cflags-$(CONFIG_CPU_H8300H) := -mh +aflags-$(CONFIG_CPU_H8300H) := -mh -Wa,--mach=h8300h +ldflags-$(CONFIG_CPU_H8300H) := -mh8300helf_linux +cflags-$(CONFIG_CPU_H8S) := -ms +aflags-$(CONFIG_CPU_H8S) := -ms -Wa,--mach=h8300s +ldflags-$(CONFIG_CPU_H8S) := -mh8300self_linux + +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -mint32 -fno-builtin +KBUILD_CFLAGS += -D__linux__ +KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\" +KBUILD_AFLAGS += $(aflags-y) +LDFLAGS += $(ldflags-y) + +CROSS_COMPILE := h8300-unknown-linux- + +core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ +ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""' +core-y += arch/h8300/boot/dts/ +endif + +libs-y += arch/$(ARCH)/lib/ + +boot := arch/h8300/boot + +%.dtb %.dtb.S %.dtb.o: | scripts + $(Q)$(MAKE) $(build)=arch/h8300/boot/dts arch/h8300/boot/dts/$@ + +PHONY += dtbs +dtbs: scripts + $(Q)$(MAKE) $(build)=arch/h8300/boot/dts + +archmrproper: + +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + +vmlinux.srec vmlinux.bin zImage uImage.bin: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +define archhelp + @echo 'vmlinux.bin - Create raw binary' + @echo 'vmlinux.srec - Create srec binary' + @echo 'zImage - Compressed kernel image' +endef diff --git a/arch/h8300/boot/Makefile b/arch/h8300/boot/Makefile new file mode 100644 index 000000000000..2f6393a5da57 --- /dev/null +++ b/arch/h8300/boot/Makefile @@ -0,0 +1,26 @@ +# arch/h8300/boot/Makefile + +targets := vmlinux.srec vmlinux.bin zImage +subdir- := compressed + +OBJCOPYFLAGS_vmlinux.srec := -Osrec +OBJCOPYFLAGS_vmlinux.bin := -Obinary +OBJCOPYFLAGS_zImage := -O binary -R .note -R .comment -R .stab -R .stabstr -S + +UIMAGE_LOADADDR = $(CONFIG_RAMBASE) +UIMAGE_ENTRYADDR = $(shell /bin/bash -c 'printf "0x%08x" \ + $$[$(CONFIG_RAMBASE) + $(CONFIG_OFFSET)]') + +$(obj)/vmlinux.srec $(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/zImage: $(obj)/compressed/vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/compressed/vmlinux: FORCE + $(Q)$(MAKE) $(build)=$(obj)/compressed $@ + +$(obj)/uImage.bin: $(obj)/vmlinux.bin + $(call if_changed,uimage,none) + +CLEAN_FILES += arch/$(ARCH)/vmlinux.bin arch/$(ARCH)/vmlinux.srec arch/$(ARCH)/uImage.bin diff --git a/arch/h8300/boot/compressed/Makefile b/arch/h8300/boot/compressed/Makefile new file mode 100644 index 000000000000..87d03b7ee97e --- /dev/null +++ b/arch/h8300/boot/compressed/Makefile @@ -0,0 +1,37 @@ +# +# linux/arch/sh/boot/compressed/Makefile +# +# create a compressed vmlinux image from the original vmlinux +# + +targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o + +OBJECTS = $(obj)/head.o $(obj)/misc.o + +# +# IMAGE_OFFSET is the load offset of the compression loader +# Assign dummy values if these 2 variables are not defined, +# in order to suppress error message. +# +CONFIG_MEMORY_START ?= 0x00400000 +CONFIG_BOOT_LINK_OFFSET ?= 0x00140000 +IMAGE_OFFSET := $(shell printf "0x%08x" $$(($(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)))) + +LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) +LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -estartup $(obj)/vmlinux.lds + +$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE + $(call if_changed,ld) + @: + +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE + $(call if_changed,gzip) + +LDFLAGS_piggy.o := -r --format binary --oformat elf32-h8300-linux -T +OBJCOPYFLAGS := -O binary + +$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE + $(call if_changed,ld) diff --git a/arch/h8300/boot/compressed/head.S b/arch/h8300/boot/compressed/head.S new file mode 100644 index 000000000000..74c0d8cc40ba --- /dev/null +++ b/arch/h8300/boot/compressed/head.S @@ -0,0 +1,48 @@ +/* + * linux/arch/h8300/boot/compressed/head.S + * + * Copyright (C) 2006 Yoshinori Sato + */ + +#include <linux/linkage.h> + + .section .text..startup,"ax" + .global startup +startup: + mov.l er0, er4 + mov.l er0, sp + mov.l #__sbss, er0 + mov.l #__ebss, er1 + sub.l er0, er1 + shlr er1 + shlr er1 + sub.l er2, er2 +1: + mov.l er2, @er0 + adds #4, er0 + dec.l #1, er1 + bne 1b + jsr @decompress_kernel + mov.l er4, er0 + jmp @0x400000 + + .align 9 +fake_headers_as_bzImage: + .word 0 + .ascii "HdrS" ; header signature + .word 0x0202 ; header version number (>= 0x0105) + ; or else old loadlin-1.5 will fail) + .word 0 ; default_switch + .word 0 ; SETUPSEG + .word 0x1000 + .word 0 ; pointing to kernel version string + .byte 0 ; = 0, old one (LILO, Loadlin, + ; 0xTV: T=0 for LILO + ; V = version + .byte 1 ; Load flags bzImage=1 + .word 0x8000 ; size to move, when setup is not + .long 0x100000 ; 0x100000 = default for big kernel + .long 0 ; address of loaded ramdisk image + .long 0 ; its size in bytes + + .end diff --git a/arch/h8300/boot/compressed/misc.c b/arch/h8300/boot/compressed/misc.c new file mode 100644 index 000000000000..704274127c07 --- /dev/null +++ b/arch/h8300/boot/compressed/misc.c @@ -0,0 +1,74 @@ +/* + * arch/h8300/boot/compressed/misc.c + * + * This is a collection of several routines from gzip-1.0.3 + * adapted for Linux. + * + * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 + * + * Adapted for h8300 by Yoshinori Sato 2006 + */ + +#include <asm/uaccess.h> + +/* + * gzip declarations + */ + +#define OF(args) args +#define STATIC static + +#undef memset +#undef memcpy +#define memzero(s, n) memset((s), (0), (n)) + +extern int _end; +static unsigned long free_mem_ptr; +static unsigned long free_mem_end_ptr; + +extern char input_data[]; +extern int input_len; +static unsigned char *output; + +#define HEAP_SIZE 0x10000 + +#include "../../../../lib/decompress_inflate.c" + +void *memset(void *s, int c, size_t n) +{ + int i; + char *ss = (char *)s; + + for (i = 0; i < n; i++) + ss[i] = c; + return s; +} + +void *memcpy(void *dest, const void *src, size_t n) +{ + int i; + char *d = (char *)dest, *s = (char *)src; + + for (i = 0; i < n; i++) + d[i] = s[i]; + return dest; +} + +static void error(char *x) +{ + + while (1) + ; /* Halt */ +} + +#define STACK_SIZE (4096) +long user_stack[STACK_SIZE]; +long *stack_start = &user_stack[STACK_SIZE]; + +void decompress_kernel(void) +{ + free_mem_ptr = (unsigned long)&_end; + free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; + + decompress(input_data, input_len, NULL, NULL, output, NULL, error); +} diff --git a/arch/h8300/boot/compressed/vmlinux.lds b/arch/h8300/boot/compressed/vmlinux.lds new file mode 100644 index 000000000000..a0a3a0ed54ef --- /dev/null +++ b/arch/h8300/boot/compressed/vmlinux.lds @@ -0,0 +1,32 @@ +SECTIONS +{ + .text : + { + __stext = . ; + __text = .; + *(.text..startup) + *(.text) + __etext = . ; + } + + .rodata : + { + *(.rodata) + } + .data : + + { + __sdata = . ; + ___data_start = . ; + *(.data.*) + } + .bss : + { + . = ALIGN(0x4) ; + __sbss = . ; + *(.bss*) + . = ALIGN(0x4) ; + __ebss = . ; + __end = . ; + } +} diff --git a/arch/h8300/boot/compressed/vmlinux.scr b/arch/h8300/boot/compressed/vmlinux.scr new file mode 100644 index 000000000000..a084903603fe --- /dev/null +++ b/arch/h8300/boot/compressed/vmlinux.scr @@ -0,0 +1,9 @@ +SECTIONS +{ + .data : { + input_len = .; + LONG(input_data_end - input_data) input_data = .; + *(.data) + input_data_end = .; + } +} diff --git a/arch/h8300/boot/dts/Makefile b/arch/h8300/boot/dts/Makefile new file mode 100644 index 000000000000..0abaf1ad830e --- /dev/null +++ b/arch/h8300/boot/dts/Makefile @@ -0,0 +1,12 @@ +ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""' +BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_H8300_BUILTIN_DTB)).dtb.o +endif + +obj-y += $(BUILTIN_DTB) + +dtb-$(CONFIG_H8300H_SIM) := h8300h_sim.dtb +dtb-$(CONFIG_H8S_SIM) := h8s_sim.dtb +dtb-$(CONFIG_H8S_EDOSK2674) := edosk2674.dtb + +always := $(dtb-y) +clean-files := *.dtb.S *.dtb diff --git a/arch/h8300/boot/dts/edosk2674.dts b/arch/h8300/boot/dts/edosk2674.dts new file mode 100644 index 000000000000..dfb5c102f8da --- /dev/null +++ b/arch/h8300/boot/dts/edosk2674.dts @@ -0,0 +1,107 @@ +/dts-v1/; +/ { + compatible = "renesas,edosk2674"; + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&h8intc>; + + chosen { + bootargs = "console=ttySC2,38400"; + stdout-path = <&sci2>; + }; + aliases { + serial0 = &sci0; + serial1 = &sci1; + serial2 = &sci2; + }; + + xclk: oscillator { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <33333333>; + clock-output-names = "xtal"; + }; + pllclk: pllclk { + compatible = "renesas,h8s2678-pll-clock"; + clocks = <&xclk>; + #clock-cells = <0>; + reg = <0xfee03b 2>, <0xfee045 2>; + }; + core_clk: core_clk { + compatible = "renesas,h8300-div-clock"; + clocks = <&pllclk>; + #clock-cells = <0>; + reg = <0xfee03b 2>; + renesas,width = <3>; + }; + fclk: fclk { + compatible = "fixed-factor-clock"; + clocks = <&core_clk>; + #clock-cells = <0>; + clock-div = <1>; + clock-mult = <1>; + }; + + memory@400000 { + device_type = "memory"; + reg = <0x400000 0x800000>; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + compatible = "renesas,h8300"; + clock-frequency = <33333333>; + }; + }; + + h8intc: interrupt-controller@fffe00 { + compatible = "renesas,h8s-intc", "renesas,h8300-intc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xfffe00 24>; + }; + + bsc: memory-controller@fffec0 { + compatible = "renesas,h8s-bsc", "renesas,h8300-bsc"; + reg = <0xfffec0 24>; + }; + + tpu: timer@ffffe0 { + compatible = "renesas,tpu"; + reg = <0xffffe0 16>, <0xfffff0 12>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + timer8: timer@ffffb0 { + compatible = "renesas,8bit-timer"; + reg = <0xffffb0 10>; + interrupts = <72 0>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + sci0: serial@ffff78 { + compatible = "renesas,sci"; + reg = <0xffff78 8>; + interrupts = <88 0>, <89 0>, <90 0>, <91 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; + sci1: serial@ffff80 { + compatible = "renesas,sci"; + reg = <0xffff80 8>; + interrupts = <92 0>, <93 0>, <94 0>, <95 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; + sci2: serial@ffff88 { + compatible = "renesas,sci"; + reg = <0xffff88 8>; + interrupts = <96 0>, <97 0>, <98 0>, <99 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; +}; diff --git a/arch/h8300/boot/dts/h8300h_sim.dts b/arch/h8300/boot/dts/h8300h_sim.dts new file mode 100644 index 000000000000..545bfb57af9a --- /dev/null +++ b/arch/h8300/boot/dts/h8300h_sim.dts @@ -0,0 +1,96 @@ +/dts-v1/; +/ { + compatible = "gnu,gdbsim"; + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&h8intc>; + + chosen { + bootargs = "earlyprintk=h8300-sim"; + stdout-path = <&sci0>; + }; + aliases { + serial0 = &sci0; + serial1 = &sci1; + }; + + xclk: oscillator { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <20000000>; + clock-output-names = "xtal"; + }; + core_clk: core_clk { + compatible = "renesas,h8300-div-clock"; + clocks = <&xclk>; + #clock-cells = <0>; + reg = <0xfee01b 2>; + renesas,width = <2>; + }; + fclk: fclk { + compatible = "fixed-factor-clock"; + clocks = <&core_clk>; + #clock-cells = <0>; + clock-div = <1>; + clock-mult = <1>; + }; + + memory@400000 { + device_type = "memory"; + reg = <0x400000 0x400000>; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + compatible = "renesas,h8300"; + clock-frequency = <20000000>; + }; + }; + + h8intc: interrupt-controller@fee012 { + compatible = "renesas,h8300h-intc", "renesas,h8300-intc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xfee012 7>; + }; + + bsc: memory-controller@fee01e { + compatible = "renesas,h8300h-bsc", "renesas,h8300-bsc"; + reg = <0xfee01e 8>; + }; + + timer8: timer@ffff80 { + compatible = "renesas,8bit-timer"; + reg = <0xffff80 10>; + interrupts = <36 0>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + timer16: timer@ffff68 { + compatible = "renesas,16bit-timer"; + reg = <0xffff68 8>, <0xffff60 8>; + interrupts = <24 0>; + renesas,channel = <0>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + sci0: serial@ffffb0 { + compatible = "renesas,sci"; + reg = <0xffffb0 8>; + interrupts = <52 0>, <53 0>, <54 0>, <55 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; + + sci1: serial@ffffb8 { + compatible = "renesas,sci"; + reg = <0xffffb8 8>; + interrupts = <56 0>, <57 0>, <58 0>, <59 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; +}; diff --git a/arch/h8300/boot/dts/h8s_sim.dts b/arch/h8300/boot/dts/h8s_sim.dts new file mode 100644 index 000000000000..bcedba5a3ce7 --- /dev/null +++ b/arch/h8300/boot/dts/h8s_sim.dts @@ -0,0 +1,99 @@ +/dts-v1/; +/ { + compatible = "gnu,gdbsim"; + #address-cells = <1>; + #size-cells = <1>; + interrupt-parent = <&h8intc>; + + chosen { + bootargs = "earlyprintk=h8300-sim"; + stdout-path = <&sci0>; + }; + aliases { + serial0 = &sci0; + serial1 = &sci1; + }; + + xclk: oscillator { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <33333333>; + clock-output-names = "xtal"; + }; + pllclk: pllclk { + compatible = "renesas,h8s2678-pll-clock"; + clocks = <&xclk>; + #clock-cells = <0>; + reg = <0xfee03b 2>, <0xfee045 2>; + }; + core_clk: core_clk { + compatible = "renesas,h8300-div-clock"; + clocks = <&pllclk>; + #clock-cells = <0>; + reg = <0xfee03b 2>; + renesas,width = <3>; + }; + fclk: fclk { + compatible = "fixed-factor-clock"; + clocks = <&core_clk>; + #clock-cells = <0>; + clock-div = <1>; + clock-mult = <1>; + }; + + memory@400000 { + device_type = "memory"; + reg = <0x400000 0x800000>; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + compatible = "renesas,h8300"; + clock-frequency = <33333333>; + }; + }; + + h8intc: interrupt-controller@fffe00 { + compatible = "renesas,h8s-intc", "renesas,h8300-intc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xfffe00 24>; + }; + + bsc: memory-controller@fffec0 { + compatible = "renesas,h8s-bsc", "renesas,h8300-bsc"; + reg = <0xfffec0 24>; + }; + + tpu: timer@ffffe0 { + compatible = "renesas,tpu"; + reg = <0xffffe0 16>, <0xfffff0 12>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + timer8: timer@ffffb0 { + compatible = "renesas,8bit-timer"; + reg = <0xffffb0 10>; + interrupts = <72 0>; + clocks = <&fclk>; + clock-names = "fck"; + }; + + sci0: serial@ffff78 { + compatible = "renesas,sci"; + reg = <0xffff78 8>; + interrupts = <88 0>, <89 0>, <90 0>, <91 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; + sci1: serial@ffff80 { + compatible = "renesas,sci"; + reg = <0xffff80 8>; + interrupts = <92 0>, <93 0>, <94 0>, <95 0>; + clocks = <&fclk>; + clock-names = "sci_ick"; + }; +}; diff --git a/arch/h8300/configs/edosk2674_defconfig b/arch/h8300/configs/edosk2674_defconfig new file mode 100644 index 000000000000..29fda12d5da9 --- /dev/null +++ b/arch/h8300/configs/edosk2674_defconfig @@ -0,0 +1,49 @@ +# CONFIG_LOCALVERSION_AUTO is not set +# CONFIG_USELIB is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_UID16 is not set +# CONFIG_SYSFS_SYSCALL is not set +# CONFIG_KALLSYMS is not set +# CONFIG_BASE_FULL is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_ADVISE_SYSCALLS is not set +CONFIG_EMBEDDED=y +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_COMPAT_BRK is not set +CONFIG_SLOB=y +# CONFIG_BLOCK is not set +CONFIG_H8S_SIM=y +CONFIG_H8300_BUILTIN_DTB="h8s_sim" +# CONFIG_BINFMT_SCRIPT is not set +CONFIG_BINFMT_FLAT=y +# CONFIG_COREDUMP is not set +# CONFIG_UEVENT_HELPER is not set +# CONFIG_STANDALONE is not set +# CONFIG_PREVENT_FIRMWARE_BUILD is not set +# CONFIG_FW_LOADER is not set +# CONFIG_ALLOW_DEV_COREDUMP is not set +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +# CONFIG_UNIX98_PTYS is not set +# CONFIG_LEGACY_PTYS is not set +# CONFIG_DEVKMEM is not set +CONFIG_SERIAL_SH_SCI=y +CONFIG_SERIAL_SH_SCI_CONSOLE=y +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +# CONFIG_INOTIFY_USER is not set +# CONFIG_PROC_FS is not set +# CONFIG_SYSFS is not set +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_DEBUG_INFO=y +# CONFIG_ENABLE_WARN_DEPRECATED is not set +# CONFIG_ENABLE_MUST_CHECK is not set diff --git a/arch/h8300/configs/h8300h-sim_defconfig b/arch/h8300/configs/h8300h-sim_defconfig new file mode 100644 index 000000000000..067bfe9c49b3 --- /dev/null +++ b/arch/h8300/configs/h8300h-sim_defconfig @@ -0,0 +1,49 @@ +# CONFIG_LOCALVERSION_AUTO is not set +# CONFIG_USELIB is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_UID16 is not set +# CONFIG_SYSFS_SYSCALL is not set +# CONFIG_KALLSYMS is not set +# CONFIG_BASE_FULL is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_ADVISE_SYSCALLS is not set +CONFIG_EMBEDDED=y +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_COMPAT_BRK is not set +CONFIG_SLOB=y +# CONFIG_BLOCK is not set +CONFIG_H8300H_SIM=y +CONFIG_H8300_BUILTIN_DTB="h8300h_sim" +# CONFIG_BINFMT_SCRIPT is not set +CONFIG_BINFMT_FLAT=y +# CONFIG_COREDUMP is not set +# CONFIG_UEVENT_HELPER is not set +# CONFIG_STANDALONE is not set +# CONFIG_PREVENT_FIRMWARE_BUILD is not set +# CONFIG_FW_LOADER is not set +# CONFIG_ALLOW_DEV_COREDUMP is not set +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +# CONFIG_UNIX98_PTYS is not set +# CONFIG_LEGACY_PTYS is not set +# CONFIG_DEVKMEM is not set +CONFIG_SERIAL_SH_SCI=y +CONFIG_SERIAL_SH_SCI_CONSOLE=y +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +# CONFIG_INOTIFY_USER is not set +# CONFIG_PROC_FS is not set +# CONFIG_SYSFS is not set +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_DEBUG_INFO=y +# CONFIG_ENABLE_WARN_DEPRECATED is not set +# CONFIG_ENABLE_MUST_CHECK is not set diff --git a/arch/h8300/configs/h8s-sim_defconfig b/arch/h8300/configs/h8s-sim_defconfig new file mode 100644 index 000000000000..29fda12d5da9 --- /dev/null +++ b/arch/h8300/configs/h8s-sim_defconfig @@ -0,0 +1,49 @@ +# CONFIG_LOCALVERSION_AUTO is not set +# CONFIG_USELIB is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_UID16 is not set +# CONFIG_SYSFS_SYSCALL is not set +# CONFIG_KALLSYMS is not set +# CONFIG_BASE_FULL is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_ADVISE_SYSCALLS is not set +CONFIG_EMBEDDED=y +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_COMPAT_BRK is not set +CONFIG_SLOB=y +# CONFIG_BLOCK is not set +CONFIG_H8S_SIM=y +CONFIG_H8300_BUILTIN_DTB="h8s_sim" +# CONFIG_BINFMT_SCRIPT is not set +CONFIG_BINFMT_FLAT=y +# CONFIG_COREDUMP is not set +# CONFIG_UEVENT_HELPER is not set +# CONFIG_STANDALONE is not set +# CONFIG_PREVENT_FIRMWARE_BUILD is not set +# CONFIG_FW_LOADER is not set +# CONFIG_ALLOW_DEV_COREDUMP is not set +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +# CONFIG_UNIX98_PTYS is not set +# CONFIG_LEGACY_PTYS is not set +# CONFIG_DEVKMEM is not set +CONFIG_SERIAL_SH_SCI=y +CONFIG_SERIAL_SH_SCI_CONSOLE=y +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +# CONFIG_INOTIFY_USER is not set +# CONFIG_PROC_FS is not set +# CONFIG_SYSFS is not set +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_DEBUG_INFO=y +# CONFIG_ENABLE_WARN_DEPRECATED is not set +# CONFIG_ENABLE_MUST_CHECK is not set diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild new file mode 100644 index 000000000000..00379d64f707 --- /dev/null +++ b/arch/h8300/include/asm/Kbuild @@ -0,0 +1,75 @@ +generic-y += asm-offsets.h +generic-y += auxvec.h +generic-y += barrier.h +generic-y += bugs.h +generic-y += cacheflush.h +generic-y += checksum.h +generic-y += clkdev.h +generic-y += cputime.h +generic-y += current.h +generic-y += delay.h +generic-y += device.h +generic-y += div64.h +generic-y += dma.h +generic-y += emergency-restart.h +generic-y += errno.h +generic-y += exec.h +generic-y += fb.h +generic-y += fcntl.h +generic-y += ftrace.h +generic-y += futex.h +generic-y += hardirq.h +generic-y += hash.h +generic-y += hw_irq.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += ipcbuf.h +generic-y += irq_regs.h +generic-y += irq_work.h +generic-y += kdebug.h +generic-y += kmap_types.h +generic-y += kvm_para.h +generic-y += linkage.h +generic-y += local.h +generic-y += local64.h +generic-y += mcs_spinlock.h +generic-y += mman.h +generic-y += mmu.h +generic-y += mmu_context.h +generic-y += module.h +generic-y += msgbuf.h +generic-y += param.h +generic-y += parport.h +generic-y += percpu.h +generic-y += pgalloc.h +generic-y += poll.h +generic-y += posix_types.h +generic-y += preempt.h +generic-y += resource.h +generic-y += scatterlist.h +generic-y += sections.h +generic-y += sembuf.h +generic-y += serial.h +generic-y += setup.h +generic-y += shmbuf.h +generic-y += shmparam.h +generic-y += siginfo.h +generic-y += sizes.h +generic-y += socket.h +generic-y += sockios.h +generic-y += spinlock.h +generic-y += stat.h +generic-y += statfs.h +generic-y += swab.h +generic-y += termbits.h +generic-y += termios.h +generic-y += timex.h +generic-y += tlbflush.h +generic-y += trace_clock.h +generic-y += topology.h +generic-y += types.h +generic-y += uaccess.h +generic-y += ucontext.h +generic-y += unaligned.h +generic-y += vga.h +generic-y += xor.h diff --git a/arch/h8300/include/asm/atomic.h b/arch/h8300/include/asm/atomic.h new file mode 100644 index 000000000000..7ca73f8546cc --- /dev/null +++ b/arch/h8300/include/asm/atomic.h @@ -0,0 +1,159 @@ +#ifndef __ARCH_H8300_ATOMIC__ +#define __ARCH_H8300_ATOMIC__ + +#include <linux/types.h> +#include <asm/cmpxchg.h> + +/* + * Atomic operations that C can't guarantee us. Useful for + * resource counting etc.. + */ + +#define ATOMIC_INIT(i) { (i) } + +#define atomic_read(v) ACCESS_ONCE((v)->counter) +#define atomic_set(v, i) (((v)->counter) = i) + +#include <linux/kernel.h> + +static inline int atomic_add_return(int i, atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + ret = v->counter += i; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_add(i, v) atomic_add_return(i, v) +#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) + +static inline int atomic_sub_return(int i, atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + ret = v->counter -= i; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_sub(i, v) atomic_sub_return(i, v) +#define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) + +static inline int atomic_inc_return(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + v->counter++; + ret = v->counter; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_inc(v) atomic_inc_return(v) + +/* + * atomic_inc_and_test - increment and test + * @v: pointer of type atomic_t + * + * Atomically increments @v by 1 + * and returns true if the result is zero, or false for all + * other cases. + */ +#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) + +static inline int atomic_dec_return(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + --v->counter; + ret = v->counter; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_dec(v) atomic_dec_return(v) + +static inline int atomic_dec_and_test(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + --v->counter; + ret = v->counter; + arch_local_irq_restore(flags); + return ret == 0; +} + +static inline int atomic_cmpxchg(atomic_t *v, int old, int new) +{ + int ret; + h8300flags flags; + + flags = arch_local_irq_save(); + ret = v->counter; + if (likely(ret == old)) + v->counter = new; + arch_local_irq_restore(flags); + return ret; +} + +static inline int __atomic_add_unless(atomic_t *v, int a, int u) +{ + int ret; + h8300flags flags; + + flags = arch_local_irq_save(); + ret = v->counter; + if (ret != u) + v->counter += a; + arch_local_irq_restore(flags); + return ret; +} + +static inline void atomic_clear_mask(unsigned long mask, unsigned long *v) +{ + unsigned char ccr; + unsigned long tmp; + + __asm__ __volatile__("stc ccr,%w3\n\t" + "orc #0x80,ccr\n\t" + "mov.l %0,%1\n\t" + "and.l %2,%1\n\t" + "mov.l %1,%0\n\t" + "ldc %w3,ccr" + : "=m"(*v), "=r"(tmp) + : "g"(~(mask)), "r"(ccr)); +} + +static inline void atomic_set_mask(unsigned long mask, unsigned long *v) +{ + unsigned char ccr; + unsigned long tmp; + + __asm__ __volatile__("stc ccr,%w3\n\t" + "orc #0x80,ccr\n\t" + "mov.l %0,%1\n\t" + "or.l %2,%1\n\t" + "mov.l %1,%0\n\t" + "ldc %w3,ccr" + : "=m"(*v), "=r"(tmp) + : "g"(~(mask)), "r"(ccr)); +} + +/* Atomic operations are already serializing */ +#define smp_mb__before_atomic_dec() barrier() +#define smp_mb__after_atomic_dec() barrier() +#define smp_mb__before_atomic_inc() barrier() +#define smp_mb__after_atomic_inc() barrier() + +#endif /* __ARCH_H8300_ATOMIC __ */ diff --git a/arch/h8300/include/asm/bitops.h b/arch/h8300/include/asm/bitops.h new file mode 100644 index 000000000000..05999aba1d6a --- /dev/null +++ b/arch/h8300/include/asm/bitops.h @@ -0,0 +1,185 @@ +#ifndef _H8300_BITOPS_H +#define _H8300_BITOPS_H + +/* + * Copyright 1992, Linus Torvalds. + * Copyright 2002, Yoshinori Sato + */ + +#include <linux/compiler.h> + +#ifdef __KERNEL__ + +#ifndef _LINUX_BITOPS_H +#error only <linux/bitops.h> can be included directly +#endif + +/* + * Function prototypes to keep gcc -Wall happy + */ + +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +static inline unsigned long ffz(unsigned long word) +{ + unsigned long result; + + result = -1; + __asm__("1:\n\t" + "shlr.l %2\n\t" + "adds #1,%0\n\t" + "bcs 1b" + : "=r"(result) + : "0"(result), "r"(word)); + return result; +} + +#define H8300_GEN_BITOP(FNAME, OP) \ +static inline void FNAME(int nr, volatile unsigned long *addr) \ +{ \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__(OP " %1,%0" : "+WU"(*b_addr) : "i"(nr & 7)); \ + } else { \ + __asm__(OP " %s1,%0" : "+WU"(*b_addr) : "r"(bit)); \ + } \ +} + +/* + * clear_bit() doesn't provide any barrier for the compiler. + */ +#define smp_mb__before_clear_bit() barrier() +#define smp_mb__after_clear_bit() barrier() + +H8300_GEN_BITOP(set_bit, "bset") +H8300_GEN_BITOP(clear_bit, "bclr") +H8300_GEN_BITOP(change_bit, "bnot") +#define __set_bit(nr, addr) set_bit((nr), (addr)) +#define __clear_bit(nr, addr) clear_bit((nr), (addr)) +#define __change_bit(nr, addr) change_bit((nr), (addr)) + +#undef H8300_GEN_BITOP + +static inline int test_bit(int nr, const unsigned long *addr) +{ + int ret = 0; + unsigned char *b_addr; + unsigned char bit = nr & 7; + + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); + if (__builtin_constant_p(nr)) { + __asm__("bld %Z2,%1\n\t" + "rotxl %0\n\t" + : "=r"(ret) + : "WU"(*b_addr), "i"(nr & 7), "0"(ret) : "cc"); + } else { + __asm__("btst %w2,%1\n\t" + "beq 1f\n\t" + "inc.l #1,%0\n" + "1:" + : "=r"(ret) + : "WU"(*b_addr), "r"(bit), "0"(ret) : "cc"); + } + return ret; +} + +#define __test_bit(nr, addr) test_bit(nr, addr) + +#define H8300_GEN_TEST_BITOP(FNNAME, OP) \ +static inline int FNNAME(int nr, void *addr) \ +{ \ + int retval = 0; \ + char ccrsave; \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__("stc ccr,%s2\n\t" \ + "orc #0x80,ccr\n\t" \ + "bld %4,%1\n\t" \ + OP " %4,%1\n\t" \ + "rotxl.l %0\n\t" \ + "ldc %s2,ccr" \ + : "=r"(retval), "+WU" (*b_addr), "=&r"(ccrsave) \ + : "0"(retval), "i"(nr & 7) : "cc"); \ + } else { \ + __asm__("stc ccr,%t3\n\t" \ + "orc #0x80,ccr\n\t" \ + "btst %s3,%1\n\t" \ + OP " %s3,%1\n\t" \ + "beq 1f\n\t" \ + "inc.l #1,%0\n\t" \ + "1:\n" \ + "ldc %t3,ccr" \ + : "=r"(retval), "+WU" (*b_addr) \ + : "0" (retval), "r"(bit) : "cc"); \ + } \ + return retval; \ +} \ + \ +static inline int __ ## FNNAME(int nr, void *addr) \ +{ \ + int retval = 0; \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__("bld %3,%1\n\t" \ + OP " %3,%1\n\t" \ + "rotxl.l %0\n\t" \ + : "=r"(retval), "+WU"(*b_addr) \ + : "0" (retval), "i"(nr & 7)); \ + } else { \ + __asm__("btst %s3,%1\n\t" \ + OP " %s3,%1\n\t" \ + "beq 1f\n\t" \ + "inc.l #1,%0\n\t" \ + "1:" \ + : "=r"(retval), "+WU"(*b_addr) \ + : "0" (retval), "r"(bit)); \ + } \ + return retval; \ +} + +H8300_GEN_TEST_BITOP(test_and_set_bit, "bset") +H8300_GEN_TEST_BITOP(test_and_clear_bit, "bclr") +H8300_GEN_TEST_BITOP(test_and_change_bit, "bnot") +#undef H8300_GEN_TEST_BITOP + +#include <asm-generic/bitops/ffs.h> + +static inline unsigned long __ffs(unsigned long word) +{ + unsigned long result; + + result = -1; + __asm__("1:\n\t" + "shlr.l %2\n\t" + "adds #1,%0\n\t" + "bcc 1b" + : "=r" (result) + : "0"(result), "r"(word)); + return result; +} + +#include <asm-generic/bitops/find.h> +#include <asm-generic/bitops/sched.h> +#include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/lock.h> +#include <asm-generic/bitops/le.h> +#include <asm-generic/bitops/ext2-atomic.h> + +#endif /* __KERNEL__ */ + +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> + +#endif /* _H8300_BITOPS_H */ diff --git a/arch/h8300/include/asm/bitsperlong.h b/arch/h8300/include/asm/bitsperlong.h new file mode 100644 index 000000000000..e140e46729ac --- /dev/null +++ b/arch/h8300/include/asm/bitsperlong.h @@ -0,0 +1,14 @@ +#ifndef __ASM_H8300_BITS_PER_LONG +#define __ASM_H8300_BITS_PER_LONG + +#include <asm-generic/bitsperlong.h> + +#if !defined(__ASSEMBLY__) +/* h8300-unknown-linux required long */ +#define __kernel_size_t __kernel_size_t +typedef unsigned long __kernel_size_t; +typedef long __kernel_ssize_t; +typedef long __kernel_ptrdiff_t; +#endif + +#endif /* __ASM_H8300_BITS_PER_LONG */ diff --git a/arch/h8300/include/asm/bug.h b/arch/h8300/include/asm/bug.h new file mode 100644 index 000000000000..1e1be8119935 --- /dev/null +++ b/arch/h8300/include/asm/bug.h @@ -0,0 +1,12 @@ +#ifndef _H8300_BUG_H +#define _H8300_BUG_H + +/* always true */ +#define is_valid_bugaddr(addr) (1) + +#include <asm-generic/bug.h> + +struct pt_regs; +extern void die(const char *str, struct pt_regs *fp, unsigned long err); + +#endif diff --git a/arch/h8300/include/asm/byteorder.h b/arch/h8300/include/asm/byteorder.h new file mode 100644 index 000000000000..888478a38145 --- /dev/null +++ b/arch/h8300/include/asm/byteorder.h @@ -0,0 +1,7 @@ +#ifndef __H8300_BYTEORDER_H__ +#define __H8300_BYTEORDER_H__ + +#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__ +#include <linux/byteorder/big_endian.h> + +#endif diff --git a/arch/h8300/include/asm/cache.h b/arch/h8300/include/asm/cache.h new file mode 100644 index 000000000000..0ef1edc5a6a6 --- /dev/null +++ b/arch/h8300/include/asm/cache.h @@ -0,0 +1,11 @@ +#ifndef __ARCH_H8300_CACHE_H +#define __ARCH_H8300_CACHE_H + +/* bytes per L1 cache line */ +#define L1_CACHE_SHIFT 2 +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) + +#define __cacheline_aligned +#define ____cacheline_aligned + +#endif diff --git a/arch/h8300/include/asm/cmpxchg.h b/arch/h8300/include/asm/cmpxchg.h new file mode 100644 index 000000000000..95fec4cd1081 --- /dev/null +++ b/arch/h8300/include/asm/cmpxchg.h @@ -0,0 +1,65 @@ +#ifndef __ARCH_H8300_CMPXCHG__ +#define __ARCH_H8300_CMPXCHG__ + +#include <linux/irqflags.h> + +#define xchg(ptr, x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), \ + sizeof(*(ptr)))) + +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((volatile struct __xchg_dummy *)(x)) + +static inline unsigned long __xchg(unsigned long x, + volatile void *ptr, int size) +{ + unsigned long tmp, flags; + + local_irq_save(flags); + + switch (size) { + case 1: + __asm__ __volatile__ + ("mov.b %2,%0\n\t" + "mov.b %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + case 2: + __asm__ __volatile__ + ("mov.w %2,%0\n\t" + "mov.w %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + case 4: + __asm__ __volatile__ + ("mov.l %2,%0\n\t" + "mov.l %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + default: + tmp = 0; + } + local_irq_restore(flags); + return tmp; +} + +#include <asm-generic/cmpxchg-local.h> + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ + (unsigned long)(o), \ + (unsigned long)(n), \ + sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) + +#ifndef CONFIG_SMP +#include <asm-generic/cmpxchg.h> +#endif + +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + +#endif /* __ARCH_H8300_CMPXCHG__ */ diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h new file mode 100644 index 000000000000..6e67a90902f2 --- /dev/null +++ b/arch/h8300/include/asm/dma-mapping.h @@ -0,0 +1,57 @@ +#ifndef _H8300_DMA_MAPPING_H +#define _H8300_DMA_MAPPING_H + +#include <asm-generic/dma-coherent.h> + +extern struct dma_map_ops h8300_dma_map_ops; + +static inline struct dma_map_ops *get_dma_ops(struct device *dev) +{ + return &h8300_dma_map_ops; +} + +#include <asm-generic/dma-mapping-common.h> + +static inline int dma_supported(struct device *dev, u64 mask) +{ + return 0; +} + +static inline int dma_set_mask(struct device *dev, u64 mask) +{ + return 0; +} + +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) + +#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL) + +static inline void *dma_alloc_attrs(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + void *memory; + + memory = ops->alloc(dev, size, dma_handle, flag, attrs); + return memory; +} + +#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL) + +static inline void dma_free_attrs(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + + ops->free(dev, size, cpu_addr, dma_handle, attrs); +} + +static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return 0; +} + +#endif diff --git a/arch/h8300/include/asm/elf.h b/arch/h8300/include/asm/elf.h new file mode 100644 index 000000000000..09031d0127a3 --- /dev/null +++ b/arch/h8300/include/asm/elf.h @@ -0,0 +1,101 @@ +#ifndef __ASM_H8300_ELF_H +#define __ASM_H8300_ELF_H + +/* + * ELF register definitions.. + */ + +#include <asm/ptrace.h> +#include <asm/user.h> + +typedef unsigned long elf_greg_t; + +#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; +typedef unsigned long elf_fpregset_t; + +/* + * This is used to ensure we don't load something for the wrong architecture. + */ +#define elf_check_arch(x) ((x)->e_machine == EM_H8_300) + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB +#define ELF_ARCH EM_H8_300 +#if defined(CONFIG_CPU_H8300H) +#define ELF_CORE_EFLAGS 0x810000 +#endif +#if defined(CONFIG_CPU_H8S) +#define ELF_CORE_EFLAGS 0x820000 +#endif + +#define ELF_PLAT_INIT(_r) do { (_r)->er1 = 0; } while (0) + +#define ELF_EXEC_PAGESIZE 4096 + +/* This is the location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +#define ELF_ET_DYN_BASE 0xD0000000UL + +/* This yields a mask that user programs can use to figure out what + instruction set this cpu supports. */ + +#define ELF_HWCAP (0) + +/* This yields a string that ld.so will use to load implementation + specific libraries for optimization. This is more specific in + intent than poking at uname or /proc/cpuinfo. */ + +#define ELF_PLATFORM (NULL) + +#define R_H8_NONE 0 +#define R_H8_DIR32 1 +#define R_H8_DIR32_28 2 +#define R_H8_DIR32_24 3 +#define R_H8_DIR32_16 4 +#define R_H8_DIR32U 6 +#define R_H8_DIR32U_28 7 +#define R_H8_DIR32U_24 8 +#define R_H8_DIR32U_20 9 +#define R_H8_DIR32U_16 10 +#define R_H8_DIR24 11 +#define R_H8_DIR24_20 12 +#define R_H8_DIR24_16 13 +#define R_H8_DIR24U 14 +#define R_H8_DIR24U_20 15 +#define R_H8_DIR24U_16 16 +#define R_H8_DIR16 17 +#define R_H8_DIR16U 18 +#define R_H8_DIR16S_32 19 +#define R_H8_DIR16S_28 20 +#define R_H8_DIR16S_24 21 +#define R_H8_DIR16S_20 22 +#define R_H8_DIR16S 23 +#define R_H8_DIR8 24 +#define R_H8_DIR8U 25 +#define R_H8_DIR8Z_32 26 +#define R_H8_DIR8Z_28 27 +#define R_H8_DIR8Z_24 28 +#define R_H8_DIR8Z_20 29 +#define R_H8_DIR8Z_16 30 +#define R_H8_PCREL16 31 +#define R_H8_PCREL8 32 +#define R_H8_BPOS 33 +#define R_H8_PCREL32 34 +#define R_H8_GOT32O 35 +#define R_H8_GOT16O 36 +#define R_H8_DIR16A8 59 +#define R_H8_DIR16R8 60 +#define R_H8_DIR24A8 61 +#define R_H8_DIR24R8 62 +#define R_H8_DIR32A16 63 +#define R_H8_ABS32 65 +#define R_H8_ABS32A16 127 + +#endif diff --git a/arch/h8300/include/asm/flat.h b/arch/h8300/include/asm/flat.h new file mode 100644 index 000000000000..a4898eccf2bf --- /dev/null +++ b/arch/h8300/include/asm/flat.h @@ -0,0 +1,28 @@ +/* + * arch/h8300/asm/include/flat.h -- uClinux flat-format executables + */ + +#ifndef __H8300_FLAT_H__ +#define __H8300_FLAT_H__ + +#define flat_argvp_envp_on_stack() 1 +#define flat_old_ram_flag(flags) 1 +#define flat_reloc_valid(reloc, size) ((reloc) <= (size)) +#define flat_set_persistent(relval, p) 0 + +/* + * on the H8 a couple of the relocations have an instruction in the + * top byte. As there can only be 24bits of address space, we just + * always preserve that 8bits at the top, when it isn't an instruction + * is is 0 (davidm@snapgear.com) + */ + +#define flat_get_relocate_addr(rel) (rel & ~0x00000001) +#define flat_get_addr_from_rp(rp, relval, flags, persistent) \ + ({(void)persistent; \ + get_unaligned(rp) & (((flags) & FLAT_FLAG_GOTPIC) ? \ + 0xffffffff : 0x00ffffff); }) +#define flat_put_addr_at_rp(rp, addr, rel) \ + put_unaligned(((*(char *)(rp)) << 24) | ((addr) & 0x00ffffff), (rp)) + +#endif /* __H8300_FLAT_H__ */ diff --git a/arch/h8300/include/asm/io.h b/arch/h8300/include/asm/io.h new file mode 100644 index 000000000000..1d09b2f2e0fe --- /dev/null +++ b/arch/h8300/include/asm/io.h @@ -0,0 +1,57 @@ +#ifndef _H8300_IO_H +#define _H8300_IO_H + +#ifdef __KERNEL__ + +#include <asm-generic/io.h> + +/* H8/300 internal I/O functions */ +static inline unsigned char ctrl_inb(unsigned long addr) +{ + return *(volatile unsigned char *)addr; +} + +static inline unsigned short ctrl_inw(unsigned long addr) +{ + return *(volatile unsigned short *)addr; +} + +static inline unsigned long ctrl_inl(unsigned long addr) +{ + return *(volatile unsigned long *)addr; +} + +static inline void ctrl_outb(unsigned char b, unsigned long addr) +{ + *(volatile unsigned char *)addr = b; +} + +static inline void ctrl_outw(unsigned short b, unsigned long addr) +{ + *(volatile unsigned short *)addr = b; +} + +static inline void ctrl_outl(unsigned long b, unsigned long addr) +{ + *(volatile unsigned long *)addr = b; +} + +static inline void ctrl_bclr(int b, unsigned long addr) +{ + if (__builtin_constant_p(b)) + __asm__("bclr %1,%0" : : "WU"(addr), "i"(b)); + else + __asm__("bclr %w1,%0" : : "WU"(addr), "r"(b)); +} + +static inline void ctrl_bset(int b, unsigned long addr) +{ + if (__builtin_constant_p(b)) + __asm__("bset %1,%0" : : "WU"(addr), "i"(b)); + else + __asm__("bset %w1,%0" : : "WU"(addr), "r"(b)); +} + +#endif /* __KERNEL__ */ + +#endif /* _H8300_IO_H */ diff --git a/arch/h8300/include/asm/irq.h b/arch/h8300/include/asm/irq.h new file mode 100644 index 000000000000..69f23f0981b3 --- /dev/null +++ b/arch/h8300/include/asm/irq.h @@ -0,0 +1,26 @@ +#ifndef _H8300_IRQ_H_ +#define _H8300_IRQ_H_ + +#include <linux/irqchip.h> + +#if defined(CONFIG_CPU_H8300H) +#define NR_IRQS 64 +#define IRQ_CHIP h8300h_irq_chip +#define EXT_IRQ0 12 +#define EXT_IRQS 6 +#elif defined(CONFIG_CPU_H8S) +#define NR_IRQS 128 +#define IRQ_CHIP h8s_irq_chip +#define EXT_IRQ0 16 +#define EXT_IRQS 16 +#endif + +static inline int irq_canonicalize(int irq) +{ + return irq; +} + +void h8300_init_ipr(void); +extern struct irq_chip h8300h_irq_chip; +extern struct irq_chip h8s_irq_chip; +#endif /* _H8300_IRQ_H_ */ diff --git a/arch/h8300/include/asm/irqflags.h b/arch/h8300/include/asm/irqflags.h new file mode 100644 index 000000000000..5e1e3242e470 --- /dev/null +++ b/arch/h8300/include/asm/irqflags.h @@ -0,0 +1,96 @@ +#ifndef _H8300_IRQFLAGS_H +#define _H8300_IRQFLAGS_H + +#ifdef CONFIG_CPU_H8300H +typedef unsigned char h8300flags; + +static inline h8300flags arch_local_save_flags(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + __asm__ volatile ("orc #0xc0,ccr"); +} + +static inline void arch_local_irq_enable(void) +{ + __asm__ volatile ("andc #0x3f,ccr"); +} + +static inline h8300flags arch_local_irq_save(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\t" + "orc #0xc0,ccr" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_restore(h8300flags flags) +{ + __asm__ volatile ("ldc %w0,ccr" : : "r" (flags) : "cc"); +} + +static inline int arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & 0xc0) == 0xc0; +} +#endif +#ifdef CONFIG_CPU_H8S +typedef unsigned short h8300flags; + +static inline h8300flags arch_local_save_flags(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\tstc exr,%x0" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + __asm__ volatile ("orc #0x80,ccr\n\t"); +} + +static inline void arch_local_irq_enable(void) +{ + __asm__ volatile ("andc #0x7f,ccr\n\t" + "andc #0xf0,exr\n\t"); +} + +static inline h8300flags arch_local_irq_save(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\t" + "stc exr,%x0\n\t" + "orc #0x80,ccr\n\t" + : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_restore(h8300flags flags) +{ + __asm__ volatile ("ldc %w0,ccr\n\t" + "ldc %x0,exr" + : : "r" (flags) : "cc"); +} + +static inline int arch_irqs_disabled_flags(h8300flags flags) +{ + return (flags & 0x0080) == 0x0080; +} + +#endif + +static inline int arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _H8300_IRQFLAGS_H */ diff --git a/arch/h8300/include/asm/mc146818rtc.h b/arch/h8300/include/asm/mc146818rtc.h new file mode 100644 index 000000000000..ab9d9646d241 --- /dev/null +++ b/arch/h8300/include/asm/mc146818rtc.h @@ -0,0 +1,9 @@ +/* + * Machine dependent access functions for RTC registers. + */ +#ifndef _H8300_MC146818RTC_H +#define _H8300_MC146818RTC_H + +/* empty include file to satisfy the include in genrtc.c/ide-geometry.c */ + +#endif /* _H8300_MC146818RTC_H */ diff --git a/arch/h8300/include/asm/mutex.h b/arch/h8300/include/asm/mutex.h new file mode 100644 index 000000000000..458c1f7fbc18 --- /dev/null +++ b/arch/h8300/include/asm/mutex.h @@ -0,0 +1,9 @@ +/* + * Pull in the generic implementation for the mutex fastpath. + * + * TODO: implement optimized primitives instead, or leave the generic + * implementation in place, or pick the atomic_xchg() based generic + * implementation. (see asm-generic/mutex-xchg.h for details) + */ + +#include <asm-generic/mutex-dec.h> diff --git a/arch/h8300/include/asm/page.h b/arch/h8300/include/asm/page.h new file mode 100644 index 000000000000..3a987a567258 --- /dev/null +++ b/arch/h8300/include/asm/page.h @@ -0,0 +1,18 @@ +#ifndef _H8300_PAGE_H +#define _H8300_PAGE_H + +#include <asm-generic/page.h> +#include <linux/types.h> + +#define MAP_NR(addr) (((uintptr_t)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#ifndef __ASSEMBLY__ +extern unsigned long rom_length; +extern unsigned long memory_start; +extern unsigned long memory_end; +extern unsigned long _ramend; +#endif + +#endif diff --git a/arch/h8300/include/asm/page_offset.h b/arch/h8300/include/asm/page_offset.h new file mode 100644 index 000000000000..888576d7cc2a --- /dev/null +++ b/arch/h8300/include/asm/page_offset.h @@ -0,0 +1,2 @@ + +#define PAGE_OFFSET_RAW 0x00000000 diff --git a/arch/h8300/include/asm/pci.h b/arch/h8300/include/asm/pci.h new file mode 100644 index 000000000000..0b2acaa3dd84 --- /dev/null +++ b/arch/h8300/include/asm/pci.h @@ -0,0 +1,19 @@ +#ifndef _ASM_H8300_PCI_H +#define _ASM_H8300_PCI_H + +/* + * asm-h8300/pci.h - H8/300 specific PCI declarations. + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#define pcibios_assign_all_busses() 0 + +static inline void pcibios_penalize_isa_irq(int irq, int active) +{ + /* We don't do dynamic PCI IRQ allocation */ +} + +#define PCI_DMA_BUS_IS_PHYS (1) + +#endif /* _ASM_H8300_PCI_H */ diff --git a/arch/h8300/include/asm/pgtable.h b/arch/h8300/include/asm/pgtable.h new file mode 100644 index 000000000000..8341db67821d --- /dev/null +++ b/arch/h8300/include/asm/pgtable.h @@ -0,0 +1,49 @@ +#ifndef _H8300_PGTABLE_H +#define _H8300_PGTABLE_H +#include <asm-generic/pgtable-nopud.h> +#include <asm-generic/pgtable.h> +#define pgtable_cache_init() do { } while (0) +extern void paging_init(void); +#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */ +#define __swp_type(x) (0) +#define __swp_offset(x) (0) +#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) +#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) +#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) +#define kern_addr_valid(addr) (1) +#define pgprot_writecombine(prot) (prot) +#define pgprot_noncached pgprot_writecombine + +static inline int pte_file(pte_t pte) { return 0; } +#define swapper_pg_dir ((pgd_t *) 0) +/* + * ZERO_PAGE is a global shared page that is always zero: used + * for zero-mapped memory areas etc.. + */ +#define ZERO_PAGE(vaddr) (virt_to_page(0)) + +/* + * These would be in other places but having them here reduces the diffs. + */ +extern unsigned int kobjsize(const void *objp); +extern int is_in_rom(unsigned long); + +/* + * No page table caches to initialise + */ +#define pgtable_cache_init() do { } while (0) + +/* + * All 32bit addresses are effectively valid for vmalloc... + * Sort of meaningless for non-VM targets. + */ +#define VMALLOC_START 0 +#define VMALLOC_END 0xffffffff + +#define arch_enter_lazy_cpu_mode() do {} while (0) + +#endif /* _H8300_PGTABLE_H */ diff --git a/arch/h8300/include/asm/processor.h b/arch/h8300/include/asm/processor.h new file mode 100644 index 000000000000..54e3fd83c336 --- /dev/null +++ b/arch/h8300/include/asm/processor.h @@ -0,0 +1,144 @@ +/* + * include/asm-h8300/processor.h + * + * Copyright (C) 2002 Yoshinori Sato + * + * Based on: linux/asm-m68nommu/processor.h + * + * Copyright (C) 1995 Hamish Macdonald + */ + +#ifndef __ASM_H8300_PROCESSOR_H +#define __ASM_H8300_PROCESSOR_H + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +#include <linux/compiler.h> +#include <asm/segment.h> +#include <asm/ptrace.h> +#include <asm/current.h> + +static inline unsigned long rdusp(void) +{ + extern unsigned int _sw_usp; + + return _sw_usp; +} + +static inline void wrusp(unsigned long usp) +{ + extern unsigned int _sw_usp; + + _sw_usp = usp; +} + +/* + * User space process size: 3.75GB. This is hardcoded into a few places, + * so don't change it unless you know what you are doing. + */ +#define TASK_SIZE (0xFFFFFFFFUL) + +#ifdef __KERNEL__ +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX STACK_TOP +#endif + +/* + * This decides where the kernel will search for a free chunk of vm + * space during mmap's. We won't be using it + */ +#define TASK_UNMAPPED_BASE 0 + +struct thread_struct { + unsigned long ksp; /* kernel stack pointer */ + unsigned long usp; /* user stack pointer */ + unsigned long ccr; /* saved status register */ + unsigned long esp0; /* points to SR of stack frame */ + struct { + unsigned short *addr; + unsigned short inst; + } breakinfo; +}; + +#define INIT_THREAD { \ + .ksp = sizeof(init_stack) + (unsigned long)init_stack, \ + .usp = 0, \ + .ccr = PS_S, \ + .esp0 = 0, \ + .breakinfo = { \ + .addr = (unsigned short *)-1, \ + .inst = 0 \ + } \ +} + +/* + * Do necessary setup to start up a newly executed thread. + * + * pass the data segment into user programs if it exists, + * it can't hurt anything as far as I can tell + */ +#if defined(CONFIG_CPU_H8300H) +#define start_thread(_regs, _pc, _usp) \ +do { \ + (_regs)->pc = (_pc); \ + (_regs)->ccr = 0x00; /* clear all flags */ \ + (_regs)->er5 = current->mm->start_data; /* GOT base */ \ + (_regs)->sp = ((unsigned long)(_usp)) - sizeof(unsigned long) * 3; \ +} while (0) +#endif +#if defined(CONFIG_CPU_H8S) +#define start_thread(_regs, _pc, _usp) \ +do { \ + (_regs)->pc = (_pc); \ + (_regs)->ccr = 0x00; /* clear kernel flag */ \ + (_regs)->exr = 0x78; /* enable all interrupts */ \ + (_regs)->er5 = current->mm->start_data; /* GOT base */ \ + /* 14 = space for retaddr(4), vector(4), er0(4) and exr(2) on stack */ \ + (_regs)->sp = ((unsigned long)(_usp)) - 14; \ +} while (0) +#endif + +/* Forward declaration, a strange C thing */ +struct task_struct; + +/* Free all resources held by a thread. */ +static inline void release_thread(struct task_struct *dead_task) +{ +} + +/* + * Free current thread data structures etc.. + */ +static inline void exit_thread(void) +{ +} + +/* + * Return saved PC of a blocked thread. + */ +unsigned long thread_saved_pc(struct task_struct *tsk); +unsigned long get_wchan(struct task_struct *p); + +#define KSTK_EIP(tsk) \ + ({ \ + unsigned long eip = 0; \ + if ((tsk)->thread.esp0 > PAGE_SIZE && \ + MAP_NR((tsk)->thread.esp0) < max_mapnr) \ + eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \ + eip; }) + +#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) + +#define cpu_relax() barrier() +#define cpu_relax_lowlatency() cpu_relax() + +#define HARD_RESET_NOW() ({ \ + local_irq_disable(); \ + asm("jmp @@0"); \ +}) + +#endif diff --git a/arch/h8300/include/asm/ptrace.h b/arch/h8300/include/asm/ptrace.h new file mode 100644 index 000000000000..e693fb463ea8 --- /dev/null +++ b/arch/h8300/include/asm/ptrace.h @@ -0,0 +1,36 @@ +#ifndef _H8300_PTRACE_H +#define _H8300_PTRACE_H + +#include <uapi/asm/ptrace.h> + +#ifndef __ASSEMBLY__ +#ifndef PS_S +#define PS_S (0x10) +#endif + +#if defined(CONFIG_CPU_H8300H) +#define H8300_REGS_NO 11 +#endif +#if defined(CONFIG_CPU_H8S) +#define H8300_REGS_NO 12 +#endif + +#define arch_has_single_step() (1) + +#define user_mode(regs) (!((regs)->ccr & PS_S)) +#define instruction_pointer(regs) ((regs)->pc) +#define profile_pc(regs) instruction_pointer(regs) +#define user_stack_pointer(regs) ((regs)->sp) +#define current_pt_regs() ((struct pt_regs *) \ + (THREAD_SIZE + (unsigned long)current_thread_info()) - 1) +#define signal_pt_regs() ((struct pt_regs *)current->thread.esp0) +#define current_user_stack_pointer() rdusp() +#define task_pt_regs(task) \ + ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1) + +extern long h8300_get_reg(struct task_struct *task, int regno); +extern int h8300_put_reg(struct task_struct *task, int regno, + unsigned long data); + +#endif /* __ASSEMBLY__ */ +#endif /* _H8300_PTRACE_H */ diff --git a/arch/h8300/include/asm/segment.h b/arch/h8300/include/asm/segment.h new file mode 100644 index 000000000000..48424c6e169f --- /dev/null +++ b/arch/h8300/include/asm/segment.h @@ -0,0 +1,45 @@ +#ifndef _H8300_SEGMENT_H +#define _H8300_SEGMENT_H + +/* define constants */ +#define USER_DATA (1) +#ifndef __USER_DS +#define __USER_DS (USER_DATA) +#endif +#define USER_PROGRAM (2) +#define SUPER_DATA (3) +#ifndef __KERNEL_DS +#define __KERNEL_DS (SUPER_DATA) +#endif +#define SUPER_PROGRAM (4) + +#ifndef __ASSEMBLY__ + +typedef struct { + unsigned long seg; +} mm_segment_t; + +#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) +#define USER_DS MAKE_MM_SEG(__USER_DS) +#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS) + +/* + * Get/set the SFC/DFC registers for MOVES instructions + */ + +static inline mm_segment_t get_fs(void) +{ + return USER_DS; +} + +static inline mm_segment_t get_ds(void) +{ + /* return the supervisor data space code */ + return KERNEL_DS; +} + +#define segment_eq(a, b) ((a).seg == (b).seg) + +#endif /* __ASSEMBLY__ */ + +#endif /* _H8300_SEGMENT_H */ diff --git a/arch/h8300/include/asm/signal.h b/arch/h8300/include/asm/signal.h new file mode 100644 index 000000000000..5870835c0470 --- /dev/null +++ b/arch/h8300/include/asm/signal.h @@ -0,0 +1,22 @@ +#ifndef _H8300_SIGNAL_H +#define _H8300_SIGNAL_H + +#include <uapi/asm/signal.h> + +/* Most things should be clean enough to redefine this at will, if care + is taken to make libc match. */ + +#define _NSIG 64 +#define _NSIG_BPW 32 +#define _NSIG_WORDS (_NSIG / _NSIG_BPW) + +typedef unsigned long old_sigset_t; /* at least 32 bits */ + +typedef struct { + unsigned long sig[_NSIG_WORDS]; +} sigset_t; + +#define __ARCH_HAS_SA_RESTORER +#include <asm/sigcontext.h> + +#endif /* _H8300_SIGNAL_H */ diff --git a/arch/h8300/include/asm/smp.h b/arch/h8300/include/asm/smp.h new file mode 100644 index 000000000000..9e9bd7e58922 --- /dev/null +++ b/arch/h8300/include/asm/smp.h @@ -0,0 +1 @@ +/* nothing required here yet */ diff --git a/arch/h8300/include/asm/string.h b/arch/h8300/include/asm/string.h new file mode 100644 index 000000000000..5dc5a8ac0544 --- /dev/null +++ b/arch/h8300/include/asm/string.h @@ -0,0 +1,17 @@ +#ifndef _H8300_STRING_H_ +#define _H8300_STRING_H_ + +#ifdef __KERNEL__ /* only set these up for kernel code */ + +#include <asm/setup.h> +#include <asm/page.h> + +#define __HAVE_ARCH_MEMSET +extern void *memset(void *s, int c, size_t count); + +#define __HAVE_ARCH_MEMCPY +extern void *memcpy(void *d, const void *s, size_t count); + +#endif /* KERNEL */ + +#endif diff --git a/arch/h8300/include/asm/switch_to.h b/arch/h8300/include/asm/switch_to.h new file mode 100644 index 000000000000..7ad1bf92dbc3 --- /dev/null +++ b/arch/h8300/include/asm/switch_to.h @@ -0,0 +1,51 @@ +#ifndef _H8300_SWITCH_TO_H +#define _H8300_SWITCH_TO_H + +/* + * switch_to(n) should switch tasks to task ptr, first checking that + * ptr isn't the current task, in which case it does nothing. This + * also clears the TS-flag if the task we switched to has used the + * math co-processor latest. + */ +/* + * switch_to() saves the extra registers, that are not saved + * automatically by SAVE_SWITCH_STACK in resume(), ie. d0-d5 and + * a0-a1. Some of these are used by schedule() and its predecessors + * and so we might get see unexpected behaviors when a task returns + * with unexpected register values. + * + * syscall stores these registers itself and none of them are used + * by syscall after the function in the syscall has been called. + * + * Beware that resume now expects *next to be in d1 and the offset of + * tss to be in a1. This saves a few instructions as we no longer have + * to push them onto the stack and read them back right after. + * + * 02/17/96 - Jes Sorensen (jds@kom.auc.dk) + * + * Changed 96/09/19 by Andreas Schwab + * pass prev in a0, next in a1, offset of tss in d1, and whether + * the mm structures are shared in d2 (to avoid atc flushing). + * + * H8/300 Porting 2002/09/04 Yoshinori Sato + */ + +asmlinkage void resume(void); +#define switch_to(prev, next, last) \ +do { \ + void *_last; \ + __asm__ __volatile__( \ + "mov.l %1, er0\n\t" \ + "mov.l %2, er1\n\t" \ + "mov.l %3, er2\n\t" \ + "jsr @_resume\n\t" \ + "mov.l er2,%0\n\t" \ + : "=r" (_last) \ + : "r" (&(prev->thread)), \ + "r" (&(next->thread)), \ + "g" (prev) \ + : "cc", "er0", "er1", "er2", "er3"); \ + (last) = _last; \ +} while (0) + +#endif /* _H8300_SWITCH_TO_H */ diff --git a/arch/h8300/include/asm/syscall.h b/arch/h8300/include/asm/syscall.h new file mode 100644 index 000000000000..b41f688d02cf --- /dev/null +++ b/arch/h8300/include/asm/syscall.h @@ -0,0 +1,56 @@ +#ifndef __ASM_H8300_SYSCALLS_32_H +#define __ASM_H8300_SYSCALLS_32_H + +#ifdef __KERNEL__ + +#include <linux/compiler.h> +#include <linux/linkage.h> +#include <linux/types.h> +#include <linux/ptrace.h> + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs->orig_er0; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + + while (n > 0) { + switch (i) { + case 0: + *args++ = regs->er1; + break; + case 1: + *args++ = regs->er2; + break; + case 2: + *args++ = regs->er3; + break; + case 3: + *args++ = regs->er4; + break; + case 4: + *args++ = regs->er5; + break; + case 5: + *args++ = regs->er6; + break; + } + i++; + n--; + } +} + + + +/* Misc syscall related bits */ +asmlinkage long do_syscall_trace_enter(struct pt_regs *regs); +asmlinkage void do_syscall_trace_leave(struct pt_regs *regs); + +#endif /* __KERNEL__ */ +#endif /* __ASM_H8300_SYSCALLS_32_H */ diff --git a/arch/h8300/include/asm/thread_info.h b/arch/h8300/include/asm/thread_info.h new file mode 100644 index 000000000000..544c30785ad4 --- /dev/null +++ b/arch/h8300/include/asm/thread_info.h @@ -0,0 +1,111 @@ +/* thread_info.h: h8300 low-level thread information + * adapted from the i386 and PPC versions by Yoshinori Sato <ysato@users.sourceforge.jp> + * + * Copyright (C) 2002 David Howells (dhowells@redhat.com) + * - Incorporating suggestions made by Linus Torvalds and Dave Miller + */ + +#ifndef _ASM_THREAD_INFO_H +#define _ASM_THREAD_INFO_H + +#include <asm/page.h> +#include <asm/segment.h> + +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ + +/* + * low level task data. + * If you change this, change the TI_* offsets below to match. + */ +struct thread_info { + struct task_struct *task; /* main task structure */ + unsigned long flags; /* low level flags */ + int cpu; /* cpu we're on */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ + mm_segment_t addr_limit; + struct restart_block restart_block; +}; + +/* + * macros/functions for gaining access to the thread information structure + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .flags = 0, \ + .cpu = 0, \ + .preempt_count = INIT_PREEMPT_COUNT, \ + .addr_limit = KERNEL_DS, \ + .restart_block = { \ + .fn = do_no_restart_syscall, \ + }, \ +} + +#define init_thread_info (init_thread_union.thread_info) +#define init_stack (init_thread_union.stack) + + +/* + * Size of kernel stack for each process. This must be a power of 2... + */ +#define THREAD_SIZE_ORDER 1 +#define THREAD_SIZE 8192 /* 2 pages */ + + +/* how to get the thread information struct from C */ +static inline struct thread_info *current_thread_info(void) +{ + struct thread_info *ti; + + __asm__("mov.l sp, %0\n\t" + "and.w %1, %T0" + : "=&r"(ti) + : "i" (~(THREAD_SIZE-1) & 0xffff)); + return ti; +} + +#endif /* __ASSEMBLY__ */ + +/* + * thread information flag bit numbers + */ +#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ +#define TIF_SIGPENDING 1 /* signal pending */ +#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ +#define TIF_SINGLESTEP 3 /* singlestepping active */ +#define TIF_MEMDIE 4 /* is terminating due to OOM killer */ +#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ +#define TIF_NOTIFY_RESUME 6 /* callback before returning to user */ +#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ +#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */ +#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling TIF_NEED_RESCHED */ + +/* as above, but as bit values */ +#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) +#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) +#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) +#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) +#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) +#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) +#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) + +/* work to do in syscall trace */ +#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ + _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT) + +/* work to do on any return to u-space */ +#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \ + _TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \ + _TIF_SINGLESTEP | _TIF_NOTIFY_RESUME | \ + _TIF_SYSCALL_TRACEPOINT) + +/* work to do on interrupt/exception return */ +#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \ + _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP)) + +#endif /* __KERNEL__ */ + +#endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/h8300/include/asm/tlb.h b/arch/h8300/include/asm/tlb.h new file mode 100644 index 000000000000..2c6fa4eed448 --- /dev/null +++ b/arch/h8300/include/asm/tlb.h @@ -0,0 +1,8 @@ +#ifndef __H8300_TLB_H__ +#define __H8300_TLB_H__ + +#define tlb_flush(tlb) do { } while (0) + +#include <asm-generic/tlb.h> + +#endif diff --git a/arch/h8300/include/asm/traps.h b/arch/h8300/include/asm/traps.h new file mode 100644 index 000000000000..aa34e75fd767 --- /dev/null +++ b/arch/h8300/include/asm/traps.h @@ -0,0 +1,41 @@ +/* + * linux/include/asm-h8300/traps.h + * + * Copyright (C) 2003 Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#ifndef _H8300_TRAPS_H +#define _H8300_TRAPS_H + +extern void _system_call(void); +extern void _interrupt_entry(void); +extern void _trace_break(void); +extern void _nmi(void); +extern void _interrupt_entry(void); + +extern unsigned long *_interrupt_redirect_table; + +#define JMP_OP 0x5a000000 +#define JSR_OP 0x5e000000 +#define VECTOR(address) ((JMP_OP)|((unsigned long)address)) +#define REDIRECT(address) ((JSR_OP)|((unsigned long)address)) +#define CPU_VECTOR ((unsigned long *)0x000000) +#define ADDR_MASK (0xffffff) + +#define TRACE_VEC 5 + +#define TRAP0_VEC 8 +#define TRAP1_VEC 9 +#define TRAP2_VEC 10 +#define TRAP3_VEC 11 + +extern char _start, _etext; +#define check_kernel_text(addr) \ + ((addr >= (unsigned long)(&_start)) && \ + (addr < (unsigned long)(&_etext))) + +#endif /* _H8300_TRAPS_H */ diff --git a/arch/h8300/include/asm/user.h b/arch/h8300/include/asm/user.h new file mode 100644 index 000000000000..2e3555f451f0 --- /dev/null +++ b/arch/h8300/include/asm/user.h @@ -0,0 +1,74 @@ +#ifndef _H8300_USER_H +#define _H8300_USER_H + +#include <asm/page.h> + +/* Core file format: The core file is written in such a way that gdb + can understand it and provide useful information to the user (under + linux we use the 'trad-core' bfd). There are quite a number of + obstacles to being able to view the contents of the floating point + registers, and until these are solved you will not be able to view the + contents of them. Actually, you can read in the core file and look at + the contents of the user struct to find out what the floating point + registers contain. + The actual file contents are as follows: + UPAGE: 1 page consisting of a user struct that tells gdb what is present + in the file. Directly after this is a copy of the task_struct, which + is currently not used by gdb, but it may come in useful at some point. + All of the registers are stored as part of the upage. The upage should + always be only one page. + DATA: The data area is stored. We use current->end_text to + current->brk to pick up all of the user variables, plus any memory + that may have been malloced. No attempt is made to determine if a page + is demand-zero or if a page is totally unused, we just cover the entire + range. All of the addresses are rounded in such a way that an integral + number of pages is written. + STACK: We need the stack information in order to get a meaningful + backtrace. We need to write the data from (esp) to + current->start_stack, so we round each of these off in order to be able + to write an integer number of pages. + The minimum core file size is 3 pages, or 12288 bytes. +*/ + +/* This is the old layout of "struct pt_regs" as of Linux 1.x, and + is still the layout used by user (the new pt_regs doesn't have + all registers). */ +struct user_regs_struct { + long er1, er2, er3, er4, er5, er6; + long er0; + long usp; + long orig_er0; + long ccr; + long pc; +}; + +/* When the kernel dumps core, it starts by dumping the user struct - + this will be used by gdb to figure out where the data and stack segments + are within the file, and what virtual addresses to use. */ +struct user { +/* We start with the registers, to mimic the way that "memory" is returned + from the ptrace(3,...) function. */ + struct user_regs_struct regs; /* Where the registers are actually stored */ +/* ptrace does not yet supply these. Someday.... */ +/* The rest of this junk is to help gdb figure out what goes where */ + unsigned long int u_tsize; /* Text segment size (pages). */ + unsigned long int u_dsize; /* Data segment size (pages). */ + unsigned long int u_ssize; /* Stack segment size (pages). */ + unsigned long start_code; /* Starting virtual address of text. */ + unsigned long start_stack; /* Starting virtual address of stack area. + This is actually the bottom of the stack, + the top of the stack is always found in the + esp register. */ + long int signal; /* Signal that caused the core dump. */ + int reserved; /* No longer used */ + unsigned long u_ar0; /* Used by gdb to help find the values for */ + /* the registers. */ + unsigned long magic; /* To uniquely identify a core file */ + char u_comm[32]; /* User command that was responsible */ +}; +#define NBPG PAGE_SIZE +#define UPAGES 1 +#define HOST_TEXT_START_ADDR (u.start_code) +#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) + +#endif diff --git a/arch/h8300/include/uapi/asm/Kbuild b/arch/h8300/include/uapi/asm/Kbuild new file mode 100644 index 000000000000..fb6101a5d4f1 --- /dev/null +++ b/arch/h8300/include/uapi/asm/Kbuild @@ -0,0 +1,30 @@ +# UAPI Header export list +include include/uapi/asm-generic/Kbuild.asm + +header-y += auxvec.h +header-y += bitsperlong.h +header-y += errno.h +header-y += fcntl.h +header-y += ioctl.h +header-y += ioctls.h +header-y += ipcbuf.h +header-y += kvm_para.h +header-y += mman.h +header-y += msgbuf.h +header-y += param.h +header-y += poll.h +header-y += posix_types.h +header-y += resource.h +header-y += sembuf.h +header-y += setup.h +header-y += shmbuf.h +header-y += siginfo.h +header-y += socket.h +header-y += sockios.h +header-y += stat.h +header-y += statfs.h +header-y += swab.h +header-y += termbits.h +header-y += termios.h +header-y += types.h +header-y += unistd.h diff --git a/arch/h8300/include/uapi/asm/byteorder.h b/arch/h8300/include/uapi/asm/byteorder.h new file mode 100644 index 000000000000..13539da99efd --- /dev/null +++ b/arch/h8300/include/uapi/asm/byteorder.h @@ -0,0 +1,6 @@ +#ifndef _H8300_BYTEORDER_H +#define _H8300_BYTEORDER_H + +#include <linux/byteorder/big_endian.h> + +#endif /* _H8300_BYTEORDER_H */ diff --git a/arch/h8300/include/uapi/asm/ptrace.h b/arch/h8300/include/uapi/asm/ptrace.h new file mode 100644 index 000000000000..e132670d70ec --- /dev/null +++ b/arch/h8300/include/uapi/asm/ptrace.h @@ -0,0 +1,42 @@ +#ifndef _UAPI_H8300_PTRACE_H +#define _UAPI_H8300_PTRACE_H + +#ifndef __ASSEMBLY__ + +#define PT_ER1 0 +#define PT_ER2 1 +#define PT_ER3 2 +#define PT_ER4 3 +#define PT_ER5 4 +#define PT_ER6 5 +#define PT_ER0 6 +#define PT_USP 7 +#define PT_ORIG_ER0 8 +#define PT_CCR 9 +#define PT_PC 10 +#define PT_EXR 11 + +/* this struct defines the way the registers are stored on the + stack during a system call. */ + +struct pt_regs { + long retpc; + long er4; + long er5; + long er6; + long er3; + long er2; + long er1; + long orig_er0; + long sp; + unsigned short ccr; + long er0; + long vector; +#if defined(__H8300S__) + unsigned short exr; +#endif + unsigned long pc; +} __attribute__((aligned(2), packed)); + +#endif /* __ASSEMBLY__ */ +#endif /* _UAPI_H8300_PTRACE_H */ diff --git a/arch/h8300/include/uapi/asm/sigcontext.h b/arch/h8300/include/uapi/asm/sigcontext.h new file mode 100644 index 000000000000..c41fdaa04657 --- /dev/null +++ b/arch/h8300/include/uapi/asm/sigcontext.h @@ -0,0 +1,18 @@ +#ifndef _ASM_H8300_SIGCONTEXT_H +#define _ASM_H8300_SIGCONTEXT_H + +struct sigcontext { + unsigned long sc_mask; /* old sigmask */ + unsigned long sc_usp; /* old user stack pointer */ + unsigned long sc_er0; + unsigned long sc_er1; + unsigned long sc_er2; + unsigned long sc_er3; + unsigned long sc_er4; + unsigned long sc_er5; + unsigned long sc_er6; + unsigned short sc_ccr; + unsigned long sc_pc; +}; + +#endif diff --git a/arch/h8300/include/uapi/asm/signal.h b/arch/h8300/include/uapi/asm/signal.h new file mode 100644 index 000000000000..af3a6c37fee6 --- /dev/null +++ b/arch/h8300/include/uapi/asm/signal.h @@ -0,0 +1,115 @@ +#ifndef _UAPI_H8300_SIGNAL_H +#define _UAPI_H8300_SIGNAL_H + +#include <linux/types.h> + +/* Avoid too many header ordering problems. */ +struct siginfo; + +#ifndef __KERNEL__ +/* Here we must cater to libcs that poke about in kernel headers. */ + +#define NSIG 32 +typedef unsigned long sigset_t; + +#endif /* __KERNEL__ */ + +#define SIGHUP 1 +#define SIGINT 2 +#define SIGQUIT 3 +#define SIGILL 4 +#define SIGTRAP 5 +#define SIGABRT 6 +#define SIGIOT 6 +#define SIGBUS 7 +#define SIGFPE 8 +#define SIGKILL 9 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGPIPE 13 +#define SIGALRM 14 +#define SIGTERM 15 +#define SIGSTKFLT 16 +#define SIGCHLD 17 +#define SIGCONT 18 +#define SIGSTOP 19 +#define SIGTSTP 20 +#define SIGTTIN 21 +#define SIGTTOU 22 +#define SIGURG 23 +#define SIGXCPU 24 +#define SIGXFSZ 25 +#define SIGVTALRM 26 +#define SIGPROF 27 +#define SIGWINCH 28 +#define SIGIO 29 +#define SIGPOLL SIGIO +/* +#define SIGLOST 29 +*/ +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED 31 + +/* These should not be considered constants from userland. */ +#define SIGRTMIN 32 +#define SIGRTMAX _NSIG + +/* + * SA_FLAGS values: + * + * SA_ONSTACK indicates that a registered stack_t will be used. + * SA_RESTART flag to get restarting signals (which were the default long ago) + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. + * SA_RESETHAND clears the handler when the signal is delivered. + * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. + * SA_NODEFER prevents the current signal from being masked in the handler. + * + * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single + * Unix names RESETHAND and NODEFER respectively. + */ +#define SA_NOCLDSTOP 0x00000001 +#define SA_NOCLDWAIT 0x00000002 /* not supported yet */ +#define SA_SIGINFO 0x00000004 +#define SA_ONSTACK 0x08000000 +#define SA_RESTART 0x10000000 +#define SA_NODEFER 0x40000000 +#define SA_RESETHAND 0x80000000 + +#define SA_NOMASK SA_NODEFER +#define SA_ONESHOT SA_RESETHAND + +#define SA_RESTORER 0x04000000 + +#define MINSIGSTKSZ 2048 +#define SIGSTKSZ 8192 + +#include <asm-generic/signal-defs.h> + +#ifndef __KERNEL__ +/* Here we must cater to libcs that poke about in kernel headers. */ + +struct sigaction { + union { + __sighandler_t _sa_handler; + void (*_sa_sigaction)(int, struct siginfo *, void *); + } _u; + sigset_t sa_mask; + unsigned long sa_flags; + void (*sa_restorer)(void); +}; + +#define sa_handler _u._sa_handler +#define sa_sigaction _u._sa_sigaction + +#endif /* __KERNEL__ */ + +typedef struct sigaltstack { + void *ss_sp; + int ss_flags; + size_t ss_size; +} stack_t; + + +#endif /* _UAPI_H8300_SIGNAL_H */ diff --git a/arch/h8300/include/uapi/asm/unistd.h b/arch/h8300/include/uapi/asm/unistd.h new file mode 100644 index 000000000000..7a2eb698def3 --- /dev/null +++ b/arch/h8300/include/uapi/asm/unistd.h @@ -0,0 +1,3 @@ +#define __ARCH_NOMMU + +#include <asm-generic/unistd.h> diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile new file mode 100644 index 000000000000..5bc33f2fcc08 --- /dev/null +++ b/arch/h8300/kernel/Makefile @@ -0,0 +1,19 @@ +# +# Makefile for the linux kernel. +# + +extra-y := vmlinux.lds + +obj-y := process.o traps.o ptrace.o \ + signal.o setup.o syscalls.o \ + irq.o entry.o dma.o + +obj-$(CONFIG_ROMKERNEL) += head_rom.o +obj-$(CONFIG_RAMKERNEL) += head_ram.o + +obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o +obj-$(CONFIG_H8300H_SIM) += sim-console.o +obj-$(CONFIG_H8S_SIM) += sim-console.o + +obj-$(CONFIG_CPU_H8300H) += ptrace_h.o +obj-$(CONFIG_CPU_H8S) += ptrace_s.o diff --git a/arch/h8300/kernel/asm-offsets.c b/arch/h8300/kernel/asm-offsets.c new file mode 100644 index 000000000000..dc2d16ce8a0d --- /dev/null +++ b/arch/h8300/kernel/asm-offsets.c @@ -0,0 +1,67 @@ +/* + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + */ + +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/kernel_stat.h> +#include <linux/ptrace.h> +#include <linux/hardirq.h> +#include <linux/kbuild.h> +#include <asm/irq.h> +#include <asm/ptrace.h> + +int main(void) +{ + /* offsets into the task struct */ + OFFSET(TASK_STATE, task_struct, state); + OFFSET(TASK_FLAGS, task_struct, flags); + OFFSET(TASK_PTRACE, task_struct, ptrace); + OFFSET(TASK_BLOCKED, task_struct, blocked); + OFFSET(TASK_THREAD, task_struct, thread); + OFFSET(TASK_THREAD_INFO, task_struct, stack); + OFFSET(TASK_MM, task_struct, mm); + OFFSET(TASK_ACTIVE_MM, task_struct, active_mm); + + /* offsets into the irq_cpustat_t struct */ + DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, + __softirq_pending)); + + /* offsets into the thread struct */ + OFFSET(THREAD_KSP, thread_struct, ksp); + OFFSET(THREAD_USP, thread_struct, usp); + OFFSET(THREAD_CCR, thread_struct, ccr); + + /* offsets into the pt_regs struct */ + DEFINE(LER0, offsetof(struct pt_regs, er0) - sizeof(long)); + DEFINE(LER1, offsetof(struct pt_regs, er1) - sizeof(long)); + DEFINE(LER2, offsetof(struct pt_regs, er2) - sizeof(long)); + DEFINE(LER3, offsetof(struct pt_regs, er3) - sizeof(long)); + DEFINE(LER4, offsetof(struct pt_regs, er4) - sizeof(long)); + DEFINE(LER5, offsetof(struct pt_regs, er5) - sizeof(long)); + DEFINE(LER6, offsetof(struct pt_regs, er6) - sizeof(long)); + DEFINE(LORIG, offsetof(struct pt_regs, orig_er0) - sizeof(long)); + DEFINE(LSP, offsetof(struct pt_regs, sp) - sizeof(long)); + DEFINE(LCCR, offsetof(struct pt_regs, ccr) - sizeof(long)); + DEFINE(LVEC, offsetof(struct pt_regs, vector) - sizeof(long)); +#if defined(CONFIG_CPU_H8S) + DEFINE(LEXR, offsetof(struct pt_regs, exr) - sizeof(long)); +#endif + DEFINE(LRET, offsetof(struct pt_regs, pc) - sizeof(long)); + + DEFINE(PT_PTRACED, PT_PTRACED); + + /* offsets in thread_info structure */ + OFFSET(TI_TASK, thread_info, task); + OFFSET(TI_FLAGS, thread_info, flags); + OFFSET(TI_CPU, thread_info, cpu); + OFFSET(TI_PRE, thread_info, preempt_count); + + return 0; +} diff --git a/arch/h8300/kernel/dma.c b/arch/h8300/kernel/dma.c new file mode 100644 index 000000000000..eeb13d3f2424 --- /dev/null +++ b/arch/h8300/kernel/dma.c @@ -0,0 +1,69 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/scatterlist.h> +#include <linux/module.h> +#include <asm/pgalloc.h> + +static void *dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs) +{ + void *ret; + + /* ignore region specifiers */ + gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); + + if (dev == NULL || (*dev->dma_mask < 0xffffffff)) + gfp |= GFP_DMA; + ret = (void *)__get_free_pages(gfp, get_order(size)); + + if (ret != NULL) { + memset(ret, 0, size); + *dma_handle = virt_to_phys(ret); + } + return ret; +} + +static void dma_free(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle, + struct dma_attrs *attrs) + +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +static dma_addr_t map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + return page_to_phys(page) + offset; +} + +static int map_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nents, i) { + sg->dma_address = sg_phys(sg); + } + + return nents; +} + +struct dma_map_ops h8300_dma_map_ops = { + .alloc = dma_alloc, + .free = dma_free, + .map_page = map_page, + .map_sg = map_sg, +}; +EXPORT_SYMBOL(h8300_dma_map_ops); diff --git a/arch/h8300/kernel/entry.S b/arch/h8300/kernel/entry.S new file mode 100644 index 000000000000..797dfa8ddeb2 --- /dev/null +++ b/arch/h8300/kernel/entry.S @@ -0,0 +1,414 @@ +/* + * + * linux/arch/h8300/kernel/entry.S + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + * David McCullough <davidm@snapgear.com> + * + */ + +/* + * entry.S + * include exception/interrupt gateway + * system call entry + */ + +#include <linux/sys.h> +#include <asm/unistd.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/linkage.h> +#include <asm/asm-offsets.h> +#include <asm/thread_info.h> +#include <asm/errno.h> + +#if defined(CONFIG_CPU_H8300H) +#define USERRET 8 +INTERRUPTS = 64 + .h8300h + .macro SHLL2 reg + shll.l \reg + shll.l \reg + .endm + .macro SHLR2 reg + shlr.l \reg + shlr.l \reg + .endm + .macro SAVEREGS + mov.l er0,@-sp + mov.l er1,@-sp + mov.l er2,@-sp + mov.l er3,@-sp + .endm + .macro RESTOREREGS + mov.l @sp+,er3 + mov.l @sp+,er2 + .endm + .macro SAVEEXR + .endm + .macro RESTOREEXR + .endm +#endif +#if defined(CONFIG_CPU_H8S) +#define USERRET 10 +#define USEREXR 8 +INTERRUPTS = 128 + .h8300s + .macro SHLL2 reg + shll.l #2,\reg + .endm + .macro SHLR2 reg + shlr.l #2,\reg + .endm + .macro SAVEREGS + stm.l er0-er3,@-sp + .endm + .macro RESTOREREGS + ldm.l @sp+,er2-er3 + .endm + .macro SAVEEXR + mov.w @(USEREXR:16,er0),r1 + mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */ + .endm + .macro RESTOREEXR + mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */ + mov.b r1l,r1h + mov.w r1,@(USEREXR:16,er0) + .endm +#endif + + +/* CPU context save/restore macros. */ + + .macro SAVE_ALL + mov.l er0,@-sp + stc ccr,r0l /* check kernel mode */ + btst #4,r0l + bne 5f + + /* user mode */ + mov.l sp,@_sw_usp + mov.l @sp,er0 /* restore saved er0 */ + orc #0x10,ccr /* switch kernel stack */ + mov.l @_sw_ksp,sp + sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */ + SAVEREGS + mov.l @_sw_usp,er0 + mov.l @(USERRET:16,er0),er1 /* copy the RET addr */ + mov.l er1,@(LRET-LER3:16,sp) + SAVEEXR + + mov.l @(LORIG-LER3:16,sp),er0 + mov.l er0,@(LER0-LER3:16,sp) /* copy ER0 */ + mov.w e1,r1 /* e1 highbyte = ccr */ + and #0xef,r1h /* mask mode? flag */ + bra 6f +5: + /* kernel mode */ + mov.l @sp,er0 /* restore saved er0 */ + subs #2,sp /* set dummy ccr */ + subs #4,sp /* set dummp sp */ + SAVEREGS + mov.w @(LRET-LER3:16,sp),r1 /* copy old ccr */ +6: + mov.b r1h,r1l + mov.b #0,r1h + mov.w r1,@(LCCR-LER3:16,sp) /* set ccr */ + mov.l @_sw_usp,er2 + mov.l er2,@(LSP-LER3:16,sp) /* set usp */ + mov.l er6,@-sp /* syscall arg #6 */ + mov.l er5,@-sp /* syscall arg #5 */ + mov.l er4,@-sp /* syscall arg #4 */ + .endm /* r1 = ccr */ + + .macro RESTORE_ALL + mov.l @sp+,er4 + mov.l @sp+,er5 + mov.l @sp+,er6 + RESTOREREGS + mov.w @(LCCR-LER1:16,sp),r0 /* check kernel mode */ + btst #4,r0l + bne 7f + + orc #0xc0,ccr + mov.l @(LSP-LER1:16,sp),er0 + mov.l @(LER0-LER1:16,sp),er1 /* restore ER0 */ + mov.l er1,@er0 + RESTOREEXR + mov.w @(LCCR-LER1:16,sp),r1 /* restore the RET addr */ + mov.b r1l,r1h + mov.b @(LRET+1-LER1:16,sp),r1l + mov.w r1,e1 + mov.w @(LRET+2-LER1:16,sp),r1 + mov.l er1,@(USERRET:16,er0) + + mov.l @sp+,er1 + add.l #(LRET-LER1),sp /* remove LORIG - LRET */ + mov.l sp,@_sw_ksp + andc #0xef,ccr /* switch to user mode */ + mov.l er0,sp + bra 8f +7: + mov.l @sp+,er1 + add.l #10,sp +8: + mov.l @sp+,er0 + adds #4,sp /* remove the sw created LVEC */ + rte + .endm + +.globl _system_call +.globl ret_from_exception +.globl ret_from_fork +.globl ret_from_kernel_thread +.globl ret_from_interrupt +.globl _interrupt_redirect_table +.globl _sw_ksp,_sw_usp +.globl _resume +.globl _interrupt_entry +.globl _trace_break +.globl _nmi + +#if defined(CONFIG_ROMKERNEL) + .section .int_redirect,"ax" +_interrupt_redirect_table: +#if defined(CONFIG_CPU_H8300H) + .rept 7 + .long 0 + .endr +#endif +#if defined(CONFIG_CPU_H8S) + .rept 5 + .long 0 + .endr + jmp @_trace_break + .long 0 +#endif + + jsr @_interrupt_entry /* NMI */ + jmp @_system_call /* TRAPA #0 (System call) */ + .long 0 + .long 0 + jmp @_trace_break /* TRAPA #3 (breakpoint) */ + .rept INTERRUPTS-12 + jsr @_interrupt_entry + .endr +#endif +#if defined(CONFIG_RAMKERNEL) +.globl _interrupt_redirect_table + .section .bss +_interrupt_redirect_table: + .space 4 +#endif + + .section .text + .align 2 +_interrupt_entry: + SAVE_ALL +/* r1l is saved ccr */ + mov.l sp,er0 + add.l #LVEC,er0 + btst #4,r1l + bne 1f + /* user LVEC */ + mov.l @_sw_usp,er0 + adds #4,er0 +1: + mov.l @er0,er0 /* LVEC address */ +#if defined(CONFIG_ROMKERNEL) + sub.l #_interrupt_redirect_table,er0 +#endif +#if defined(CONFIG_RAMKERNEL) + mov.l @_interrupt_redirect_table,er1 + sub.l er1,er0 +#endif + SHLR2 er0 + dec.l #1,er0 + mov.l sp,er1 + subs #4,er1 /* adjust ret_pc */ +#if defined(CONFIG_CPU_H8S) + orc #7,exr +#endif + jsr @do_IRQ + jmp @ret_from_interrupt + +_system_call: + subs #4,sp /* dummy LVEC */ + SAVE_ALL + /* er0: syscall nr */ + andc #0xbf,ccr + mov.l er0,er4 + + /* save top of frame */ + mov.l sp,er0 + jsr @set_esp0 + mov.l sp,er2 + and.w #0xe000,r2 + mov.l @(TI_FLAGS:16,er2),er2 + and.w #_TIF_WORK_SYSCALL_MASK,r2 + beq 1f + mov.l sp,er0 + jsr @do_syscall_trace_enter +1: + cmp.l #__NR_syscalls,er4 + bcc badsys + SHLL2 er4 + mov.l #_sys_call_table,er0 + add.l er4,er0 + mov.l @er0,er4 + beq ret_from_exception:16 + mov.l @(LER1:16,sp),er0 + mov.l @(LER2:16,sp),er1 + mov.l @(LER3:16,sp),er2 + jsr @er4 + mov.l er0,@(LER0:16,sp) /* save the return value */ + mov.l sp,er2 + and.w #0xe000,r2 + mov.l @(TI_FLAGS:16,er2),er2 + and.w #_TIF_WORK_SYSCALL_MASK,r2 + beq 2f + mov.l sp,er0 + jsr @do_syscall_trace_leave +2: + orc #0xc0,ccr + bra resume_userspace + +badsys: + mov.l #-ENOSYS,er0 + mov.l er0,@(LER0:16,sp) + bra resume_userspace + +#if !defined(CONFIG_PREEMPT) +#define resume_kernel restore_all +#endif + +ret_from_exception: +#if defined(CONFIG_PREEMPT) + orc #0xc0,ccr +#endif +ret_from_interrupt: + mov.b @(LCCR+1:16,sp),r0l + btst #4,r0l + bne resume_kernel:16 /* return from kernel */ +resume_userspace: + andc #0xbf,ccr + mov.l sp,er4 + and.w #0xe000,r4 /* er4 <- current thread info */ + mov.l @(TI_FLAGS:16,er4),er1 + and.l #_TIF_WORK_MASK,er1 + beq restore_all:8 +work_pending: + btst #TIF_NEED_RESCHED,r1l + bne work_resched:8 + /* work notifysig */ + mov.l sp,er0 + subs #4,er0 /* er0: pt_regs */ + jsr @do_notify_resume + bra resume_userspace:8 +work_resched: + mov.l sp,er0 + jsr @set_esp0 + jsr @schedule + bra resume_userspace:8 +restore_all: + RESTORE_ALL /* Does RTE */ + +#if defined(CONFIG_PREEMPT) +resume_kernel: + mov.l @(TI_PRE_COUNT:16,er4),er0 + bne restore_all:8 +need_resched: + mov.l @(TI_FLAGS:16,er4),er0 + btst #TIF_NEED_RESCHED,r0l + beq restore_all:8 + mov.b @(LCCR+1:16,sp),r0l /* Interrupt Enabled? */ + bmi restore_all:8 + mov.l sp,er0 + jsr @set_esp0 + jsr @preempt_schedule_irq + bra need_resched:8 +#endif + +ret_from_fork: + mov.l er2,er0 + jsr @schedule_tail + jmp @ret_from_exception + +ret_from_kernel_thread: + mov.l er2,er0 + jsr @schedule_tail + mov.l @(LER4:16,sp),er0 + mov.l @(LER5:16,sp),er1 + jsr @er1 + jmp @ret_from_exception + +_resume: + /* + * Beware - when entering resume, offset of tss is in d1, + * prev (the current task) is in a0, next (the new task) + * is in a1 and d2.b is non-zero if the mm structure is + * shared between the tasks, so don't change these + * registers until their contents are no longer needed. + */ + + /* save sr */ + sub.w r3,r3 + stc ccr,r3l + mov.w r3,@(THREAD_CCR+2:16,er0) + + /* disable interrupts */ + orc #0xc0,ccr + mov.l @_sw_usp,er3 + mov.l er3,@(THREAD_USP:16,er0) + mov.l sp,@(THREAD_KSP:16,er0) + + /* Skip address space switching if they are the same. */ + /* FIXME: what did we hack out of here, this does nothing! */ + + mov.l @(THREAD_USP:16,er1),er0 + mov.l er0,@_sw_usp + mov.l @(THREAD_KSP:16,er1),sp + + /* restore status register */ + mov.w @(THREAD_CCR+2:16,er1),r3 + + ldc r3l,ccr + rts + +_trace_break: + subs #4,sp + SAVE_ALL + sub.l er1,er1 + dec.l #1,er1 + mov.l er1,@(LORIG,sp) + mov.l sp,er0 + jsr @set_esp0 + mov.l @_sw_usp,er0 + mov.l @er0,er1 + mov.w @(-2:16,er1),r2 + cmp.w #0x5730,r2 + beq 1f + subs #2,er1 + mov.l er1,@er0 +1: + and.w #0xff,e1 + mov.l er1,er0 + jsr @trace_trap + jmp @ret_from_exception + +_nmi: + subs #4, sp + mov.l er0, @-sp + mov.l @_interrupt_redirect_table, er0 + add.l #8*4, er0 + mov.l er0, @(4,sp) + mov.l @sp+, er0 + jmp @_interrupt_entry + + .section .bss +_sw_ksp: + .space 4 +_sw_usp: + .space 4 + + .end diff --git a/arch/h8300/kernel/h8300_ksyms.c b/arch/h8300/kernel/h8300_ksyms.c new file mode 100644 index 000000000000..a9033c838968 --- /dev/null +++ b/arch/h8300/kernel/h8300_ksyms.c @@ -0,0 +1,36 @@ +#include <linux/module.h> +#include <linux/linkage.h> + +/* + * libgcc functions - functions that are used internally by the + * compiler... (prototypes are not correct though, but that + * doesn't really matter since they're not versioned). + */ +asmlinkage long __ucmpdi2(long long, long long); +asmlinkage long long __ashldi3(long long, int); +asmlinkage long long __ashrdi3(long long, int); +asmlinkage long long __lshrdi3(long long, int); +asmlinkage long __divsi3(long, long); +asmlinkage long __modsi3(long, long); +asmlinkage unsigned long __umodsi3(unsigned long, unsigned long); +asmlinkage long long __muldi3(long long, long long); +asmlinkage long __mulsi3(long, long); +asmlinkage long __udivsi3(long, long); +asmlinkage void *memcpy(void *, const void *, size_t); +asmlinkage void *memset(void *, int, size_t); +asmlinkage long strncpy_from_user(void *to, void *from, size_t n); + + /* gcc lib functions */ +EXPORT_SYMBOL(__ucmpdi2); +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__divsi3); +EXPORT_SYMBOL(__modsi3); +EXPORT_SYMBOL(__umodsi3); +EXPORT_SYMBOL(__muldi3); +EXPORT_SYMBOL(__mulsi3); +EXPORT_SYMBOL(__udivsi3); +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(strncpy_from_user); diff --git a/arch/h8300/kernel/head_ram.S b/arch/h8300/kernel/head_ram.S new file mode 100644 index 000000000000..84ac5c3ed31a --- /dev/null +++ b/arch/h8300/kernel/head_ram.S @@ -0,0 +1,60 @@ + +#include <linux/sys.h> +#include <linux/init.h> +#include <asm/unistd.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/linkage.h> +#include <asm/asm-offsets.h> +#include <asm/thread_info.h> +#include <asm/errno.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#define SYSCR 0xfee012 +#define IRAMTOP 0xffff20 +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#define INTCR 0xffff31 +#define IRAMTOP 0xffc000 +#endif + + __HEAD + .global _start +_start: + mov.l #IRAMTOP,sp + /* .bss clear */ + mov.l #_sbss,er5 + mov.l #_ebss,er4 + sub.l er5,er4 + shlr er4 + shlr er4 + sub.l er2,er2 +1: + mov.l er2,@er5 + adds #4,er5 + dec.l #1,er4 + bne 1b + jsr @h8300_fdt_init + + /* linux kernel start */ +#if defined(CONFIG_CPU_H8300H) + ldc #0xd0,ccr /* running kernel */ + mov.l #SYSCR,er0 + bclr #3,@er0 +#endif +#if defined(CONFIG_CPU_H8S) + ldc #0x07,exr + bclr #4,@INTCR:8 + bset #5,@INTCR:8 /* Interrupt mode 2 */ + ldc #0x90,ccr /* running kernel */ +#endif + mov.l #init_thread_union,sp + add.l #0x2000,sp + jsr @start_kernel + +1: + bra 1b + + .end diff --git a/arch/h8300/kernel/head_rom.S b/arch/h8300/kernel/head_rom.S new file mode 100644 index 000000000000..9868a4121a1f --- /dev/null +++ b/arch/h8300/kernel/head_rom.S @@ -0,0 +1,110 @@ +#include <linux/init.h> +#include <asm/thread_info.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#define SYSCR 0xfee012 +#define IRAMTOP 0xffff20 +#define NR_INT 64 +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#define INTCR 0xffff31 +#define IRAMTOP 0xffc000 +#define NR_INT 128 +#endif + + __HEAD + .global _start +_start: + mov.l #IRAMTOP,sp +#if !defined(CONFIG_H8300H_SIM) && \ + !defined(CONFIG_H8S_SIM) + jsr @lowlevel_init + + /* copy .data */ + mov.l #_begin_data,er5 + mov.l #_sdata,er6 + mov.l #_edata,er4 + sub.l er6,er4 + shlr.l er4 + shlr.l er4 +1: + mov.l @er5+,er0 + mov.l er0,@er6 + adds #4,er6 + dec.l #1,er4 + bne 1b + /* .bss clear */ + mov.l #_sbss,er5 + mov.l #_ebss,er4 + sub.l er5,er4 + shlr er4 + shlr er4 + sub.l er0,er0 +1: + mov.l er0,@er5 + adds #4,er5 + dec.l #1,er4 + bne 1b +#else + /* get cmdline from gdb */ + jsr @0xcc + ;; er0 - argc + ;; er1 - argv + mov.l #command_line,er3 + adds #4,er1 + dec.l #1,er0 + beq 4f +1: + mov.l @er1+,er2 +2: + mov.b @er2+,r4l + beq 3f + mov.b r4l,@er3 + adds #1,er3 + bra 2b +3: + mov.b #' ',r4l + mov.b r4l,@er3 + adds #1,er3 + dec.l #1,er0 + bne 1b + subs #1,er3 + mov.b #0,r4l + mov.b r4l,@er3 +4: +#endif + sub.l er0,er0 + jsr @h8300_fdt_init + /* linux kernel start */ +#if defined(CONFIG_CPU_H8300H) + ldc #0xd0,ccr /* running kernel */ + mov.l #SYSCR,er0 + bclr #3,@er0 +#endif +#if defined(CONFIG_CPU_H8S) + ldc #0x07,exr + bclr #4,@INTCR:8 + bset #5,@INTCR:8 /* Interrupt mode 2 */ + ldc #0x90,ccr /* running kernel */ +#endif + mov.l #init_thread_union,sp + add.l #0x2000,sp + jsr @start_kernel + +1: + bra 1b + +#if defined(CONFIG_ROMKERNEL) + /* interrupt vector */ + .section .vectors,"ax" + .long _start + .long _start +vector = 2 + .rept NR_INT - 2 + .long _interrupt_redirect_table+vector*4 +vector = vector + 1 + .endr +#endif + .end diff --git a/arch/h8300/kernel/irq.c b/arch/h8300/kernel/irq.c new file mode 100644 index 000000000000..da79f9521699 --- /dev/null +++ b/arch/h8300/kernel/irq.c @@ -0,0 +1,97 @@ +/* + * linux/arch/h8300/kernel/irq.c + * + * Copyright 2014-2015 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/of_irq.h> +#include <asm/traps.h> + +#ifdef CONFIG_RAMKERNEL +typedef void (*h8300_vector)(void); + +static const h8300_vector __initconst trap_table[] = { + 0, 0, 0, 0, + _trace_break, + 0, 0, + _nmi, + _system_call, + 0, 0, + _trace_break, +}; + +static unsigned long __init *get_vector_address(void) +{ + unsigned long *rom_vector = CPU_VECTOR; + unsigned long base, tmp; + int vec_no; + + base = rom_vector[EXT_IRQ0] & ADDR_MASK; + + /* check romvector format */ + for (vec_no = EXT_IRQ0 + 1; vec_no <= EXT_IRQ0+EXT_IRQS; vec_no++) { + if ((base+(vec_no - EXT_IRQ0)*4) != + (rom_vector[vec_no] & ADDR_MASK)) + return NULL; + } + + /* ramvector base address */ + base -= EXT_IRQ0*4; + + /* writerble? */ + tmp = ~(*(volatile unsigned long *)base); + (*(volatile unsigned long *)base) = tmp; + if ((*(volatile unsigned long *)base) != tmp) + return NULL; + return (unsigned long *)base; +} + +static void __init setup_vector(void) +{ + int i; + unsigned long *ramvec, *ramvec_p; + const h8300_vector *trap_entry; + + ramvec = get_vector_address(); + if (ramvec == NULL) + panic("interrupt vector serup failed."); + else + pr_debug("virtual vector at 0x%p\n", ramvec); + + /* create redirect table */ + ramvec_p = ramvec; + trap_entry = trap_table; + for (i = 0; i < NR_IRQS; i++) { + if (i < 12) { + if (*trap_entry) + *ramvec_p = VECTOR(*trap_entry); + ramvec_p++; + trap_entry++; + } else + *ramvec_p++ = REDIRECT(_interrupt_entry); + } + _interrupt_redirect_table = ramvec; +} +#else +void setup_vector(void) +{ + /* noting do */ +} +#endif + +void __init init_IRQ(void) +{ + setup_vector(); + irqchip_init(); +} + +asmlinkage void do_IRQ(int irq) +{ + irq_enter(); + generic_handle_irq(irq); + irq_exit(); +} diff --git a/arch/h8300/kernel/module.c b/arch/h8300/kernel/module.c new file mode 100644 index 000000000000..515f6c4e8d80 --- /dev/null +++ b/arch/h8300/kernel/module.c @@ -0,0 +1,70 @@ +#include <linux/moduleloader.h> +#include <linux/elf.h> +#include <linux/vmalloc.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/kernel.h> + +int apply_relocate_add(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr; + + pr_debug("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) { + /* This is where to make the change */ + uint32_t *loc = + (uint32_t *)(sechdrs[sechdrs[relsec].sh_info].sh_addr + + rela[i].r_offset); + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + Elf32_Sym *sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rela[i].r_info); + uint32_t v = sym->st_value + rela[i].r_addend; + + switch (ELF32_R_TYPE(rela[i].r_info)) { + case R_H8_DIR24R8: + loc = (uint32_t *)((uint32_t)loc - 1); + *loc = (*loc & 0xff000000) | ((*loc & 0xffffff) + v); + break; + case R_H8_DIR24A8: + if (ELF32_R_SYM(rela[i].r_info)) + *loc += v; + break; + case R_H8_DIR32: + case R_H8_DIR32A16: + *loc += v; + break; + case R_H8_PCREL16: + v -= (unsigned long)loc + 2; + if ((Elf32_Sword)v > 0x7fff || + (Elf32_Sword)v < -(Elf32_Sword)0x8000) + goto overflow; + else + *(unsigned short *)loc = v; + break; + case R_H8_PCREL8: + v -= (unsigned long)loc + 1; + if ((Elf32_Sword)v > 0x7f || + (Elf32_Sword)v < -(Elf32_Sword)0x80) + goto overflow; + else + *(unsigned char *)loc = v; + break; + default: + pr_err("module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rela[i].r_info)); + return -ENOEXEC; + } + } + return 0; + overflow: + pr_err("module %s: relocation offset overflow: %08x\n", + me->name, rela[i].r_offset); + return -ENOEXEC; +} diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c new file mode 100644 index 000000000000..dee41256922c --- /dev/null +++ b/arch/h8300/kernel/process.c @@ -0,0 +1,171 @@ +/* + * linux/arch/h8300/kernel/process.c + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + * + * Based on: + * + * linux/arch/m68knommu/kernel/process.c + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * The Silver Hammer Group, Ltd. + * + * linux/arch/m68k/kernel/process.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * 68060 fixes by Jesper Skov + */ + +/* + * This file handles the architecture-dependent parts of process handling.. + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/stddef.h> +#include <linux/unistd.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/interrupt.h> +#include <linux/reboot.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/rcupdate.h> + +#include <asm/uaccess.h> +#include <asm/traps.h> +#include <asm/setup.h> +#include <asm/pgtable.h> + +void (*pm_power_off)(void) = NULL; +EXPORT_SYMBOL(pm_power_off); + +asmlinkage void ret_from_fork(void); +asmlinkage void ret_from_kernel_thread(void); + +/* + * The idle loop on an H8/300.. + */ +void arch_cpu_idle(void) +{ + local_irq_enable(); + __asm__("sleep"); +} + +void machine_restart(char *__unused) +{ + local_irq_disable(); + __asm__("jmp @@0"); +} + +void machine_halt(void) +{ + local_irq_disable(); + __asm__("sleep"); + for (;;) + ; +} + +void machine_power_off(void) +{ + local_irq_disable(); + __asm__("sleep"); + for (;;) + ; +} + +void show_regs(struct pt_regs *regs) +{ + show_regs_print_info(KERN_DEFAULT); + + pr_notice("\n"); + pr_notice("PC: %08lx Status: %02x\n", + regs->pc, regs->ccr); + pr_notice("ORIG_ER0: %08lx ER0: %08lx ER1: %08lx\n", + regs->orig_er0, regs->er0, regs->er1); + pr_notice("ER2: %08lx ER3: %08lx ER4: %08lx ER5: %08lx\n", + regs->er2, regs->er3, regs->er4, regs->er5); + pr_notice("ER6' %08lx ", regs->er6); + if (user_mode(regs)) + printk("USP: %08lx\n", rdusp()); + else + printk("\n"); +} + +void flush_thread(void) +{ +} + +int copy_thread(unsigned long clone_flags, + unsigned long usp, unsigned long topstk, + struct task_struct *p) +{ + struct pt_regs *childregs; + + childregs = (struct pt_regs *) (THREAD_SIZE + task_stack_page(p)) - 1; + + if (unlikely(p->flags & PF_KTHREAD)) { + memset(childregs, 0, sizeof(struct pt_regs)); + childregs->retpc = (unsigned long) ret_from_kernel_thread; + childregs->er4 = topstk; /* arg */ + childregs->er5 = usp; /* fn */ + } else { + *childregs = *current_pt_regs(); + childregs->er0 = 0; + childregs->retpc = (unsigned long) ret_from_fork; + p->thread.usp = usp ?: rdusp(); + } + p->thread.ksp = (unsigned long)childregs; + + return 0; +} + +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + return ((struct pt_regs *)tsk->thread.esp0)->pc; +} + +unsigned long get_wchan(struct task_struct *p) +{ + unsigned long fp, pc; + unsigned long stack_page; + int count = 0; + + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + + stack_page = (unsigned long)p; + fp = ((struct pt_regs *)p->thread.ksp)->er6; + do { + if (fp < stack_page+sizeof(struct thread_info) || + fp >= 8184+stack_page) + return 0; + pc = ((unsigned long *)fp)[1]; + if (!in_sched_functions(pc)) + return pc; + fp = *(unsigned long *) fp; + } while (count++ < 16); + return 0; +} + +/* generic sys_clone is not enough registers */ +asmlinkage int sys_clone(unsigned long __user *args) +{ + unsigned long clone_flags; + unsigned long newsp; + uintptr_t parent_tidptr; + uintptr_t child_tidptr; + + get_user(clone_flags, &args[0]); + get_user(newsp, &args[1]); + get_user(parent_tidptr, &args[2]); + get_user(child_tidptr, &args[3]); + return do_fork(clone_flags, newsp, 0, + (int __user *)parent_tidptr, (int __user *)child_tidptr); +} diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c new file mode 100644 index 000000000000..92075544a19a --- /dev/null +++ b/arch/h8300/kernel/ptrace.c @@ -0,0 +1,203 @@ +/* + * linux/arch/h8300/kernel/ptrace.c + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/audit.h> +#include <linux/tracehook.h> +#include <linux/regset.h> +#include <linux/elf.h> + +#define CCR_MASK 0x6f /* mode/imask not set */ +#define EXR_MASK 0x80 /* modify only T */ + +#define PT_REG(r) offsetof(struct pt_regs, r) + +extern void user_disable_single_step(struct task_struct *child); + +/* Mapping from PT_xxx to the stack offset at which the register is + saved. Notice that usp has no stack-slot and needs to be treated + specially (see get_reg/put_reg below). */ +static const int register_offset[] = { + PT_REG(er1), PT_REG(er2), PT_REG(er3), PT_REG(er4), + PT_REG(er5), PT_REG(er6), PT_REG(er0), -1, + PT_REG(orig_er0), PT_REG(ccr), PT_REG(pc), +#if defined(CONFIG_CPU_H8S) + PT_REG(exr), +#endif +}; + +/* read register */ +long h8300_get_reg(struct task_struct *task, int regno) +{ + switch (regno) { + case PT_USP: + return task->thread.usp + sizeof(long)*2; + case PT_CCR: + case PT_EXR: + return *(unsigned short *)(task->thread.esp0 + + register_offset[regno]); + default: + return *(unsigned long *)(task->thread.esp0 + + register_offset[regno]); + } +} + +int h8300_put_reg(struct task_struct *task, int regno, unsigned long data) +{ + unsigned short oldccr; + unsigned short oldexr; + + switch (regno) { + case PT_USP: + task->thread.usp = data - sizeof(long)*2; + case PT_CCR: + oldccr = *(unsigned short *)(task->thread.esp0 + + register_offset[regno]); + oldccr &= ~CCR_MASK; + data &= CCR_MASK; + data |= oldccr; + *(unsigned short *)(task->thread.esp0 + + register_offset[regno]) = data; + break; + case PT_EXR: + oldexr = *(unsigned short *)(task->thread.esp0 + + register_offset[regno]); + oldccr &= ~EXR_MASK; + data &= EXR_MASK; + data |= oldexr; + *(unsigned short *)(task->thread.esp0 + + register_offset[regno]) = data; + break; + default: + *(unsigned long *)(task->thread.esp0 + + register_offset[regno]) = data; + break; + } + return 0; +} + +static int regs_get(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + void *kbuf, void __user *ubuf) +{ + int r; + struct user_regs_struct regs; + long *reg = (long *)®s; + + /* build user regs in buffer */ + for (r = 0; r < ARRAY_SIZE(register_offset); r++) + *reg++ = h8300_get_reg(target, r); + + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, + ®s, 0, sizeof(regs)); +} + +static int regs_set(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + int r; + int ret; + struct user_regs_struct regs; + long *reg; + + /* build user regs in buffer */ + for (reg = (long *)®s, r = 0; r < ARRAY_SIZE(register_offset); r++) + *reg++ = h8300_get_reg(target, r); + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ®s, 0, sizeof(regs)); + if (ret) + return ret; + + /* write back to pt_regs */ + for (reg = (long *)®s, r = 0; r < ARRAY_SIZE(register_offset); r++) + h8300_put_reg(target, r, *reg++); + return 0; +} + +enum h8300_regset { + REGSET_GENERAL, +}; + +static const struct user_regset h8300_regsets[] = { + [REGSET_GENERAL] = { + .core_note_type = NT_PRSTATUS, + .n = ELF_NGREG, + .size = sizeof(long), + .align = sizeof(long), + .get = regs_get, + .set = regs_set, + }, +}; + +static const struct user_regset_view user_h8300_native_view = { + .name = "h8300", + .e_machine = EM_H8_300, + .regsets = h8300_regsets, + .n = ARRAY_SIZE(h8300_regsets), +}; + +const struct user_regset_view *task_user_regset_view(struct task_struct *task) +{ + return &user_h8300_native_view; +} + +void ptrace_disable(struct task_struct *child) +{ + user_disable_single_step(child); +} + +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) +{ + int ret; + + switch (request) { + default: + ret = ptrace_request(child, request, addr, data); + break; + } + return ret; +} + +asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) +{ + long ret = 0; + + if (test_thread_flag(TIF_SYSCALL_TRACE) && + tracehook_report_syscall_entry(regs)) + /* + * Tracing decided this syscall should not happen. + * We'll return a bogus call number to get an ENOSYS + * error, but leave the original number in regs->regs[0]. + */ + ret = -1L; + + audit_syscall_entry(regs->er1, regs->er2, regs->er3, + regs->er4, regs->er5); + + return ret ?: regs->er0; +} + +asmlinkage void do_syscall_trace_leave(struct pt_regs *regs) +{ + int step; + + audit_syscall_exit(regs); + + step = test_thread_flag(TIF_SINGLESTEP); + if (step || test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(regs, step); +} diff --git a/arch/h8300/kernel/ptrace_h.c b/arch/h8300/kernel/ptrace_h.c new file mode 100644 index 000000000000..fe3b5673baba --- /dev/null +++ b/arch/h8300/kernel/ptrace_h.c @@ -0,0 +1,256 @@ +/* + * ptrace cpu depend helper functions + * + * Copyright 2003, 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/linkage.h> +#include <linux/sched.h> +#include <asm/ptrace.h> + +#define BREAKINST 0x5730 /* trapa #3 */ + +/* disable singlestep */ +void user_disable_single_step(struct task_struct *child) +{ + if ((long)child->thread.breakinfo.addr != -1L) { + *(child->thread.breakinfo.addr) = child->thread.breakinfo.inst; + child->thread.breakinfo.addr = (unsigned short *)-1L; + } +} + +/* calculate next pc */ +enum jump_type {none, /* normal instruction */ + jabs, /* absolute address jump */ + ind, /* indirect address jump */ + ret, /* return to subrutine */ + reg, /* register indexed jump */ + relb, /* pc relative jump (byte offset) */ + relw, /* pc relative jump (word offset) */ + }; + +/* opcode decode table define + ptn: opcode pattern + msk: opcode bitmask + len: instruction length (<0 next table index) + jmp: jump operation mode */ +struct optable { + unsigned char bitpattern; + unsigned char bitmask; + signed char length; + signed char type; +} __packed __aligned(1); + +#define OPTABLE(ptn, msk, len, jmp) \ + { \ + .bitpattern = ptn, \ + .bitmask = msk, \ + .length = len, \ + .type = jmp, \ + } + +static const struct optable optable_0[] = { + OPTABLE(0x00, 0xff, 1, none), /* 0x00 */ + OPTABLE(0x01, 0xff, -1, none), /* 0x01 */ + OPTABLE(0x02, 0xfe, 1, none), /* 0x02-0x03 */ + OPTABLE(0x04, 0xee, 1, none), /* 0x04-0x05/0x14-0x15 */ + OPTABLE(0x06, 0xfe, 1, none), /* 0x06-0x07 */ + OPTABLE(0x08, 0xea, 1, none), /* 0x08-0x09/0x0c-0x0d/0x18-0x19/0x1c-0x1d */ + OPTABLE(0x0a, 0xee, 1, none), /* 0x0a-0x0b/0x1a-0x1b */ + OPTABLE(0x0e, 0xee, 1, none), /* 0x0e-0x0f/0x1e-0x1f */ + OPTABLE(0x10, 0xfc, 1, none), /* 0x10-0x13 */ + OPTABLE(0x16, 0xfe, 1, none), /* 0x16-0x17 */ + OPTABLE(0x20, 0xe0, 1, none), /* 0x20-0x3f */ + OPTABLE(0x40, 0xf0, 1, relb), /* 0x40-0x4f */ + OPTABLE(0x50, 0xfc, 1, none), /* 0x50-0x53 */ + OPTABLE(0x54, 0xfd, 1, ret), /* 0x54/0x56 */ + OPTABLE(0x55, 0xff, 1, relb), /* 0x55 */ + OPTABLE(0x57, 0xff, 1, none), /* 0x57 */ + OPTABLE(0x58, 0xfb, 2, relw), /* 0x58/0x5c */ + OPTABLE(0x59, 0xfb, 1, reg), /* 0x59/0x5b */ + OPTABLE(0x5a, 0xfb, 2, jabs), /* 0x5a/0x5e */ + OPTABLE(0x5b, 0xfb, 2, ind), /* 0x5b/0x5f */ + OPTABLE(0x60, 0xe8, 1, none), /* 0x60-0x67/0x70-0x77 */ + OPTABLE(0x68, 0xfa, 1, none), /* 0x68-0x69/0x6c-0x6d */ + OPTABLE(0x6a, 0xfe, -2, none), /* 0x6a-0x6b */ + OPTABLE(0x6e, 0xfe, 2, none), /* 0x6e-0x6f */ + OPTABLE(0x78, 0xff, 4, none), /* 0x78 */ + OPTABLE(0x79, 0xff, 2, none), /* 0x79 */ + OPTABLE(0x7a, 0xff, 3, none), /* 0x7a */ + OPTABLE(0x7b, 0xff, 2, none), /* 0x7b */ + OPTABLE(0x7c, 0xfc, 2, none), /* 0x7c-0x7f */ + OPTABLE(0x80, 0x80, 1, none), /* 0x80-0xff */ +}; + +static const struct optable optable_1[] = { + OPTABLE(0x00, 0xff, -3, none), /* 0x0100 */ + OPTABLE(0x40, 0xf0, -3, none), /* 0x0140-0x14f */ + OPTABLE(0x80, 0xf0, 1, none), /* 0x0180-0x018f */ + OPTABLE(0xc0, 0xc0, 2, none), /* 0x01c0-0x01ff */ +}; + +static const struct optable optable_2[] = { + OPTABLE(0x00, 0x20, 2, none), /* 0x6a0?/0x6a8?/0x6b0?/0x6b8? */ + OPTABLE(0x20, 0x20, 3, none), /* 0x6a2?/0x6aa?/0x6b2?/0x6ba? */ +}; + +static const struct optable optable_3[] = { + OPTABLE(0x69, 0xfb, 2, none), /* 0x010069/0x01006d/014069/0x01406d */ + OPTABLE(0x6b, 0xff, -4, none), /* 0x01006b/0x01406b */ + OPTABLE(0x6f, 0xff, 3, none), /* 0x01006f/0x01406f */ + OPTABLE(0x78, 0xff, 5, none), /* 0x010078/0x014078 */ +}; + +static const struct optable optable_4[] = { +/* 0x0100690?/0x01006d0?/0140690?/0x01406d0?/ + 0x0100698?/0x01006d8?/0140698?/0x01406d8? */ + OPTABLE(0x00, 0x78, 3, none), +/* 0x0100692?/0x01006d2?/0140692?/0x01406d2?/ + 0x010069a?/0x01006da?/014069a?/0x01406da? */ + OPTABLE(0x20, 0x78, 4, none), +}; + +static const struct optables_list { + const struct optable *ptr; + int size; +} optables[] = { +#define OPTABLES(no) \ + { \ + .ptr = optable_##no, \ + .size = sizeof(optable_##no) / sizeof(struct optable), \ + } + OPTABLES(0), + OPTABLES(1), + OPTABLES(2), + OPTABLES(3), + OPTABLES(4), + +}; + +const unsigned char condmask[] = { + 0x00, 0x40, 0x01, 0x04, 0x02, 0x08, 0x10, 0x20 +}; + +static int isbranch(struct task_struct *task, int reson) +{ + unsigned char cond = h8300_get_reg(task, PT_CCR); + + /* encode complex conditions */ + /* B4: N^V + B5: Z|(N^V) + B6: C|Z */ + __asm__("bld #3,%w0\n\t" + "bxor #1,%w0\n\t" + "bst #4,%w0\n\t" + "bor #2,%w0\n\t" + "bst #5,%w0\n\t" + "bld #2,%w0\n\t" + "bor #0,%w0\n\t" + "bst #6,%w0\n\t" + : "=&r"(cond) : "0"(cond) : "cc"); + cond &= condmask[reson >> 1]; + if (!(reson & 1)) + return cond == 0; + else + return cond != 0; +} + +static unsigned short *decode(struct task_struct *child, + const struct optable *op, + char *fetch_p, unsigned short *pc, + unsigned char inst) +{ + unsigned long addr; + unsigned long *sp; + int regno; + + switch (op->type) { + case none: + return (unsigned short *)pc + op->length; + case jabs: + addr = *(unsigned long *)pc; + return (unsigned short *)(addr & 0x00ffffff); + case ind: + addr = *pc & 0xff; + return (unsigned short *)(*(unsigned long *)addr); + case ret: + sp = (unsigned long *)h8300_get_reg(child, PT_USP); + /* user stack frames + | er0 | temporary saved + +--------+ + | exp | exception stack frames + +--------+ + | ret pc | userspace return address + */ + return (unsigned short *)(*(sp+2) & 0x00ffffff); + case reg: + regno = (*pc >> 4) & 0x07; + if (regno == 0) + addr = h8300_get_reg(child, PT_ER0); + else + addr = h8300_get_reg(child, regno-1 + PT_ER1); + return (unsigned short *)addr; + case relb: + if (inst == 0x55 || isbranch(child, inst & 0x0f)) + pc = (unsigned short *)((unsigned long)pc + + ((signed char)(*fetch_p))); + return pc+1; /* skip myself */ + case relw: + if (inst == 0x5c || isbranch(child, (*fetch_p & 0xf0) >> 4)) + pc = (unsigned short *)((unsigned long)pc + + ((signed short)(*(pc+1)))); + return pc+2; /* skip myself */ + default: + return NULL; + } +} + +static unsigned short *nextpc(struct task_struct *child, unsigned short *pc) +{ + const struct optable *op; + unsigned char *fetch_p; + int op_len; + unsigned char inst; + + op = optables[0].ptr; + op_len = optables[0].size; + fetch_p = (unsigned char *)pc; + inst = *fetch_p++; + do { + if ((inst & op->bitmask) == op->bitpattern) { + if (op->length < 0) { + op = optables[-op->length].ptr; + op_len = optables[-op->length].size + 1; + inst = *fetch_p++; + } else + return decode(child, op, fetch_p, pc, inst); + } else + op++; + } while (--op_len > 0); + return NULL; +} + +/* Set breakpoint(s) to simulate a single step from the current PC. */ + +void user_enable_single_step(struct task_struct *child) +{ + unsigned short *next; + + next = nextpc(child, (unsigned short *)h8300_get_reg(child, PT_PC)); + child->thread.breakinfo.addr = next; + child->thread.breakinfo.inst = *next; + *next = BREAKINST; +} + +asmlinkage void trace_trap(unsigned long bp) +{ + if ((unsigned long)current->thread.breakinfo.addr == bp) { + user_disable_single_step(current); + force_sig(SIGTRAP, current); + } else + force_sig(SIGILL, current); +} diff --git a/arch/h8300/kernel/ptrace_s.c b/arch/h8300/kernel/ptrace_s.c new file mode 100644 index 000000000000..ef5a9c13e76d --- /dev/null +++ b/arch/h8300/kernel/ptrace_s.c @@ -0,0 +1,44 @@ +/* + * linux/arch/h8300/kernel/ptrace_h8s.c + * ptrace cpu depend helper functions + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/linkage.h> +#include <linux/sched.h> +#include <linux/errno.h> +#include <asm/ptrace.h> + +#define CCR_MASK 0x6f +#define EXR_TRACE 0x80 + +/* disable singlestep */ +void user_disable_single_step(struct task_struct *child) +{ + unsigned char exr; + + exr = h8300_get_reg(child, PT_EXR); + exr &= ~EXR_TRACE; + h8300_put_reg(child, PT_EXR, exr); +} + +/* enable singlestep */ +void user_enable_single_step(struct task_struct *child) +{ + unsigned char exr; + + exr = h8300_get_reg(child, PT_EXR); + exr |= EXR_TRACE; + h8300_put_reg(child, PT_EXR, exr); +} + +asmlinkage void trace_trap(unsigned long bp) +{ + (void)bp; + force_sig(SIGTRAP, current); +} diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c new file mode 100644 index 000000000000..0fd1fe65c0b8 --- /dev/null +++ b/arch/h8300/kernel/setup.c @@ -0,0 +1,255 @@ +/* + * linux/arch/h8300/kernel/setup.c + * + * Copyright (C) 2001-2014 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +/* + * This file handles the architecture-dependent parts of system setup + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/mm.h> +#include <linux/fs.h> +#include <linux/console.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/bootmem.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_fdt.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/clk-provider.h> +#include <linux/memblock.h> +#include <linux/screen_info.h> + +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/pgtable.h> +#include <asm/sections.h> +#include <asm/page.h> + +#if defined(CONFIG_CPU_H8300H) +#define CPU "H8/300H" +#elif defined(CONFIG_CPU_H8S) +#define CPU "H8S" +#else +#define CPU "Unknown" +#endif + +unsigned long memory_start; +unsigned long memory_end; +EXPORT_SYMBOL(memory_end); +static unsigned long freq; +extern char __dtb_start[]; + +#ifdef CONFIG_VT +struct screen_info screen_info; +#endif + +char __initdata command_line[COMMAND_LINE_SIZE]; + +void sim_console_register(void); + +void __init h8300_fdt_init(void *fdt, char *bootargs) +{ + if (!fdt) + fdt = __dtb_start; + else + strcpy(command_line, bootargs); + + early_init_dt_scan(fdt); + memblock_allow_resize(); +} + +static void __init bootmem_init(void) +{ + int bootmap_size; + unsigned long ram_start_pfn; + unsigned long free_ram_start_pfn; + unsigned long ram_end_pfn; + struct memblock_region *region; + + memory_end = memory_start = 0; + + /* Find main memory where is the kernel */ + for_each_memblock(memory, region) { + memory_start = region->base; + memory_end = region->base + region->size; + } + + if (!memory_end) + panic("No memory!"); + + ram_start_pfn = PFN_UP(memory_start); + /* free_ram_start_pfn is first page after kernel */ + free_ram_start_pfn = PFN_UP(__pa(_end)); + ram_end_pfn = PFN_DOWN(memblock_end_of_DRAM()); + + max_pfn = ram_end_pfn; + + /* + * give all the memory to the bootmap allocator, tell it to put the + * boot mem_map at the start of memory + */ + bootmap_size = init_bootmem_node(NODE_DATA(0), + free_ram_start_pfn, + 0, + ram_end_pfn); + /* + * free the usable memory, we have to make sure we do not free + * the bootmem bitmap so we then reserve it after freeing it :-) + */ + free_bootmem(PFN_PHYS(free_ram_start_pfn), + (ram_end_pfn - free_ram_start_pfn) << PAGE_SHIFT); + reserve_bootmem(PFN_PHYS(free_ram_start_pfn), bootmap_size, + BOOTMEM_DEFAULT); + + for_each_memblock(reserved, region) { + reserve_bootmem(region->base, region->size, BOOTMEM_DEFAULT); + } +} + +void __init setup_arch(char **cmdline_p) +{ + unflatten_and_copy_device_tree(); + + init_mm.start_code = (unsigned long) _stext; + init_mm.end_code = (unsigned long) _etext; + init_mm.end_data = (unsigned long) _edata; + init_mm.brk = (unsigned long) 0; + + pr_notice("\r\n\nuClinux " CPU "\n"); + pr_notice("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); + + if (*command_line) + strcpy(boot_command_line, command_line); + *cmdline_p = boot_command_line; + + parse_early_param(); + + bootmem_init(); +#if defined(CONFIG_H8300H_SIM) || defined(CONFIG_H8S_SIM) + sim_console_register(); +#endif + + early_platform_driver_probe("earlyprintk", 1, 0); + /* + * get kmalloc into gear + */ + paging_init(); +} + +/* + * Get CPU information for use by the procfs. + */ + +static int show_cpuinfo(struct seq_file *m, void *v) +{ + char *cpu; + + cpu = CPU; + + seq_printf(m, "CPU:\t\t%s\n" + "Clock:\t\t%lu.%1luMHz\n" + "BogoMips:\t%lu.%02lu\n" + "Calibration:\t%lu loops\n", + cpu, + freq/1000, freq%1000, + (loops_per_jiffy*HZ)/500000, + ((loops_per_jiffy*HZ)/5000)%100, + (loops_per_jiffy*HZ)); + + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < num_possible_cpus() ? + ((void *) 0x12345678) : NULL; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; + +static int __init device_probe(void) +{ + of_platform_populate(NULL, NULL, NULL, NULL); + + return 0; +} + +device_initcall(device_probe); + +#if defined(CONFIG_CPU_H8300H) +#define get_wait(base, addr) ({ \ + int baddr; \ + baddr = ((addr) / 0x200000 * 2); \ + w *= (ctrl_inw((unsigned long)(base) + 2) & (3 << baddr)) + 1; \ + }) +#endif +#if defined(CONFIG_CPU_H8S) +#define get_wait(base, addr) ({ \ + int baddr; \ + baddr = ((addr) / 0x200000 * 16); \ + w *= (ctrl_inl((unsigned long)(base) + 2) & (7 << baddr)) + 1; \ + }) +#endif + +static __init int access_timing(void) +{ + struct device_node *bsc; + void __iomem *base; + unsigned long addr = (unsigned long)&__delay; + int bit = 1 << (addr / 0x200000); + int w; + + bsc = of_find_compatible_node(NULL, NULL, "renesas,h8300-bsc"); + base = of_iomap(bsc, 0); + w = (ctrl_inb((unsigned long)base + 0) & bit)?2:1; + if (ctrl_inb((unsigned long)base + 1) & bit) + w *= get_wait(base, addr); + else + w *= 2; + return w * 3 / 2; +} + +void __init calibrate_delay(void) +{ + struct device_node *cpu; + int freq; + + cpu = of_find_compatible_node(NULL, NULL, "renesas,h8300"); + of_property_read_s32(cpu, "clock-frequency", &freq); + loops_per_jiffy = freq / HZ / (access_timing() * 2); + pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n", + loops_per_jiffy / (500000 / HZ), + (loops_per_jiffy / (5000 / HZ)) % 100, loops_per_jiffy); +} + + +void __init time_init(void) +{ + of_clk_init(NULL); +} diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c new file mode 100644 index 000000000000..380fffd081b2 --- /dev/null +++ b/arch/h8300/kernel/signal.c @@ -0,0 +1,289 @@ +/* + * linux/arch/h8300/kernel/signal.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * uClinux H8/300 support by Yoshinori Sato <ysato@users.sourceforge.jp> + * and David McCullough <davidm@snapgear.com> + * + * Based on + * Linux/m68k by Hamish Macdonald + */ + +/* + * ++roman (07/09/96): implemented signal stacks (specially for tosemu on + * Atari :-) Current limitation: Only one sigstack can be active at one time. + * If a second signal with SA_ONSTACK set arrives while working on a sigstack, + * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested + * signal handlers! + */ + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/syscalls.h> +#include <linux/errno.h> +#include <linux/wait.h> +#include <linux/ptrace.h> +#include <linux/unistd.h> +#include <linux/stddef.h> +#include <linux/highuid.h> +#include <linux/personality.h> +#include <linux/tty.h> +#include <linux/binfmts.h> +#include <linux/tracehook.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/traps.h> +#include <asm/ucontext.h> + +/* + * Do a signal return; undo the signal stack. + * + * Keep the return code on the stack quadword aligned! + * That makes the cache flush below easier. + */ + +struct rt_sigframe { + long dummy_er0; + long dummy_vector; +#if defined(CONFIG_CPU_H8S) + short dummy_exr; +#endif + long dummy_pc; + char *pretcode; + struct siginfo *pinfo; + void *puc; + unsigned char retcode[8]; + struct siginfo info; + struct ucontext uc; + int sig; +} __packed __aligned(2); + +static inline int +restore_sigcontext(struct sigcontext *usc, int *pd0) +{ + struct pt_regs *regs = current_pt_regs(); + int err = 0; + unsigned int ccr; + unsigned int usp; + unsigned int er0; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + /* restore passed registers */ +#define COPY(r) do { err |= get_user(regs->r, &usc->sc_##r); } while (0) + COPY(er1); + COPY(er2); + COPY(er3); + COPY(er5); + COPY(pc); + ccr = regs->ccr & 0x10; + COPY(ccr); +#undef COPY + regs->ccr &= 0xef; + regs->ccr |= ccr; + regs->orig_er0 = -1; /* disable syscall checks */ + err |= __get_user(usp, &usc->sc_usp); + wrusp(usp); + + err |= __get_user(er0, &usc->sc_er0); + *pd0 = er0; + return err; +} + +asmlinkage int sys_rt_sigreturn(void) +{ + unsigned long usp = rdusp(); + struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4); + sigset_t set; + int er0; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + set_current_blocked(&set); + + if (restore_sigcontext(&frame->uc.uc_mcontext, &er0)) + goto badframe; + + if (restore_altstack(&frame->uc.uc_stack)) + goto badframe; + + return er0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, + unsigned long mask) +{ + int err = 0; + + err |= __put_user(regs->er0, &sc->sc_er0); + err |= __put_user(regs->er1, &sc->sc_er1); + err |= __put_user(regs->er2, &sc->sc_er2); + err |= __put_user(regs->er3, &sc->sc_er3); + err |= __put_user(regs->er4, &sc->sc_er4); + err |= __put_user(regs->er5, &sc->sc_er5); + err |= __put_user(regs->er6, &sc->sc_er6); + err |= __put_user(rdusp(), &sc->sc_usp); + err |= __put_user(regs->pc, &sc->sc_pc); + err |= __put_user(regs->ccr, &sc->sc_ccr); + err |= __put_user(mask, &sc->sc_mask); + + return err; +} + +static inline void __user * +get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) +{ + return (void __user *)((sigsp(rdusp(), ksig) - frame_size) & -8UL); +} + +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) +{ + struct rt_sigframe *frame; + int err = 0; + unsigned char *ret; + + frame = get_sigframe(ksig, regs, sizeof(*frame)); + + if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) + return -EFAULT; + + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + err |= copy_siginfo_to_user(&frame->info, &ksig->info); + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(0, &frame->uc.uc_link); + err |= __save_altstack(&frame->uc.uc_stack, rdusp()); + err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); + err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); + if (err) + return -EFAULT; + + /* Set up to return from userspace. */ + ret = frame->retcode; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + ret = (unsigned char *)(ksig->ka.sa.sa_restorer); + else { + /* sub.l er0,er0; mov.b #__NR_rt_sigreturn,r0l; trapa #0 */ + err |= __put_user(0x1a80f800 + (__NR_rt_sigreturn & 0xff), + (unsigned long *)(frame->retcode + 0)); + err |= __put_user(0x5700, + (unsigned short *)(frame->retcode + 4)); + } + err |= __put_user(ret, &frame->pretcode); + + if (err) + return -EFAULT; + + /* Set up registers for signal handler */ + wrusp((unsigned long) frame); + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; + regs->er0 = ksig->sig; + regs->er1 = (unsigned long)&(frame->info); + regs->er2 = (unsigned long)&frame->uc; + regs->er5 = current->mm->start_data; /* GOT base */ + + return 0; +} + +static void +handle_restart(struct pt_regs *regs, struct k_sigaction *ka) +{ + switch (regs->er0) { + case -ERESTARTNOHAND: + if (!ka) + goto do_restart; + regs->er0 = -EINTR; + break; + case -ERESTART_RESTARTBLOCK: + if (!ka) { + regs->er0 = __NR_restart_syscall; + regs->pc -= 2; + } else + regs->er0 = -EINTR; + break; + case -ERESTARTSYS: + if (!(ka->sa.sa_flags & SA_RESTART)) { + regs->er0 = -EINTR; + break; + } + /* fallthrough */ + case -ERESTARTNOINTR: +do_restart: + regs->er0 = regs->orig_er0; + regs->pc -= 2; + break; + } +} + +/* + * OK, we're invoking a handler + */ +static void +handle_signal(struct ksignal *ksig, struct pt_regs *regs) +{ + sigset_t *oldset = sigmask_to_save(); + int ret; + /* are we from a system call? */ + if (regs->orig_er0 >= 0) + handle_restart(regs, &ksig->ka); + + ret = setup_rt_frame(ksig, oldset, regs); + + signal_setup_done(ret, ksig, 0); +} + +/* + * Note that 'init' is a special process: it doesn't get signals it doesn't + * want to handle. Thus you cannot kill init even with a SIGKILL even by + * mistake. + */ +static void do_signal(struct pt_regs *regs) +{ + struct ksignal ksig; + + current->thread.esp0 = (unsigned long) regs; + + if (get_signal(&ksig)) { + /* Whee! Actually deliver the signal. */ + handle_signal(&ksig, regs); + return; + } + /* Did we come from a system call? */ + if (regs->orig_er0 >= 0) + handle_restart(regs, NULL); + + /* If there's no signal to deliver, we just restore the saved mask. */ + restore_saved_sigmask(); +} + +asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags) +{ + if (thread_info_flags & _TIF_SIGPENDING) + do_signal(regs); + + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } +} diff --git a/arch/h8300/kernel/sim-console.c b/arch/h8300/kernel/sim-console.c new file mode 100644 index 000000000000..a15edf0565d9 --- /dev/null +++ b/arch/h8300/kernel/sim-console.c @@ -0,0 +1,79 @@ +/* + * arch/h8300/kernel/early_printk.c + * + * Copyright (C) 2009 Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/console.h> +#include <linux/tty.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> + +static void sim_write(struct console *co, const char *ptr, + unsigned len) +{ + register const int fd __asm__("er0") = 1; /* stdout */ + register const char *_ptr __asm__("er1") = ptr; + register const unsigned _len __asm__("er2") = len; + + __asm__(".byte 0x5e,0x00,0x00,0xc7\n\t" /* jsr @0xc7 (sys_write) */ + : : "g"(fd), "g"(_ptr), "g"(_len)); +} + +static struct console sim_console = { + .name = "sim_console", + .write = sim_write, + .setup = NULL, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +static char sim_console_buf[32]; + +static int sim_probe(struct platform_device *pdev) +{ + if (sim_console.data) + return -EEXIST; + + if (!strstr(sim_console_buf, "keep")) + sim_console.flags |= CON_BOOT; + + register_console(&sim_console); + return 0; +} + +static int sim_remove(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver sim_driver = { + .probe = sim_probe, + .remove = sim_remove, + .driver = { + .name = "h8300-sim", + .owner = THIS_MODULE, + }, +}; + +early_platform_init_buffer("earlyprintk", &sim_driver, + sim_console_buf, ARRAY_SIZE(sim_console_buf)); + +static struct platform_device sim_console_device = { + .name = "h8300-sim", + .id = 0, +}; + +static struct platform_device *devices[] __initdata = { + &sim_console_device, +}; + +void __init sim_console_register(void) +{ + early_platform_add_devices(devices, + ARRAY_SIZE(devices)); +} diff --git a/arch/h8300/kernel/syscalls.c b/arch/h8300/kernel/syscalls.c new file mode 100644 index 000000000000..1f9123a013d3 --- /dev/null +++ b/arch/h8300/kernel/syscalls.c @@ -0,0 +1,14 @@ +#include <linux/syscalls.h> +#include <linux/signal.h> +#include <linux/unistd.h> + +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +#define sys_mmap2 sys_mmap_pgoff + +asmlinkage int sys_rt_sigreturn(void); + +void *_sys_call_table[__NR_syscalls] = { +#include <asm/unistd.h> +}; diff --git a/arch/h8300/kernel/traps.c b/arch/h8300/kernel/traps.c new file mode 100644 index 000000000000..1b2d7cdd6591 --- /dev/null +++ b/arch/h8300/kernel/traps.c @@ -0,0 +1,161 @@ +/* + * linux/arch/h8300/boot/traps.c -- general exception handling code + * H8/300 support Yoshinori Sato <ysato@users.sourceforge.jp> + * + * Cloned from Linux/m68k. + * + * No original Copyright holder listed, + * Probable original (C) Roman Zippel (assigned DJD, 1999) + * + * Copyright 1999-2000 D. Jeff Dionne, <jeff@rt-control.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/bug.h> + +#include <asm/irq.h> +#include <asm/traps.h> +#include <asm/page.h> + +static DEFINE_SPINLOCK(die_lock); + +/* + * this must be called very early as the kernel might + * use some instruction that are emulated on the 060 + */ + +void __init base_trap_init(void) +{ +} + +void __init trap_init(void) +{ +} + +asmlinkage void set_esp0(unsigned long ssp) +{ + current->thread.esp0 = ssp; +} + +/* + * Generic dumping code. Used for panic and debug. + */ + +static void dump(struct pt_regs *fp) +{ + unsigned long *sp; + unsigned char *tp; + int i; + + pr_info("\nCURRENT PROCESS:\n\n"); + pr_info("COMM=%s PID=%d\n", current->comm, current->pid); + if (current->mm) { + pr_info("TEXT=%08x-%08x DATA=%08x-%08x BSS=%08x-%08x\n", + (int) current->mm->start_code, + (int) current->mm->end_code, + (int) current->mm->start_data, + (int) current->mm->end_data, + (int) current->mm->end_data, + (int) current->mm->brk); + pr_info("USER-STACK=%08x KERNEL-STACK=%08lx\n\n", + (int) current->mm->start_stack, + (int) PAGE_SIZE+(unsigned long)current); + } + + show_regs(fp); + pr_info("\nCODE:"); + tp = ((unsigned char *) fp->pc) - 0x20; + for (sp = (unsigned long *) tp, i = 0; (i < 0x40); i += 4) { + if ((i % 0x10) == 0) + pr_info("\n%08x: ", (int) (tp + i)); + pr_info("%08x ", (int) *sp++); + } + pr_info("\n"); + + pr_info("\nKERNEL STACK:"); + tp = ((unsigned char *) fp) - 0x40; + for (sp = (unsigned long *) tp, i = 0; (i < 0xc0); i += 4) { + if ((i % 0x10) == 0) + pr_info("\n%08x: ", (int) (tp + i)); + pr_info("%08x ", (int) *sp++); + } + pr_info("\n"); + if (STACK_MAGIC != *(unsigned long *)((unsigned long)current+PAGE_SIZE)) + pr_info("(Possibly corrupted stack page??)\n"); + + pr_info("\n\n"); +} + +void die(const char *str, struct pt_regs *fp, unsigned long err) +{ + static int diecount; + + oops_enter(); + + console_verbose(); + spin_lock_irq(&die_lock); + report_bug(fp->pc, fp); + pr_crit("%s: %04lx [#%d] ", str, err & 0xffff, ++diecount); + dump(fp); + + spin_unlock_irq(&die_lock); + do_exit(SIGSEGV); +} + +static int kstack_depth_to_print = 24; + +void show_stack(struct task_struct *task, unsigned long *esp) +{ + unsigned long *stack, addr; + int i; + + if (esp == NULL) + esp = (unsigned long *) &esp; + + stack = esp; + + pr_info("Stack from %08lx:", (unsigned long)stack); + for (i = 0; i < kstack_depth_to_print; i++) { + if (((unsigned long)stack & (THREAD_SIZE - 1)) == 0) + break; + if (i % 8 == 0) + pr_info("\n "); + pr_info(" %08lx", *stack++); + } + + pr_info("\nCall Trace:"); + i = 0; + stack = esp; + while (((unsigned long)stack & (THREAD_SIZE - 1)) != 0) { + addr = *stack++; + /* + * If the address is either in the text segment of the + * kernel, or in the region which contains vmalloc'ed + * memory, it *may* be the address of a calling + * routine; if so, print it so that someone tracing + * down the cause of the crash will be able to figure + * out the call path that was taken. + */ + if (check_kernel_text(addr)) { + if (i % 4 == 0) + pr_info("\n "); + pr_info(" [<%08lx>]", addr); + i++; + } + } + pr_info("\n"); +} + +void show_trace_task(struct task_struct *tsk) +{ + show_stack(tsk, (unsigned long *)tsk->thread.esp0); +} diff --git a/arch/h8300/kernel/vmlinux.lds.S b/arch/h8300/kernel/vmlinux.lds.S new file mode 100644 index 000000000000..7c302dcf5249 --- /dev/null +++ b/arch/h8300/kernel/vmlinux.lds.S @@ -0,0 +1,67 @@ +#include <asm-generic/vmlinux.lds.h> +#include <asm/page.h> + +#define ROMTOP 0x000000 +#define RAMTOP 0x400000 + +jiffies = jiffies_64 + 4; + +ENTRY(_start) + +SECTIONS +{ +#if defined(CONFIG_ROMKERNEL) + . = ROMTOP; + .vectors : + { + _vector = . ; + *(.vector*) + } +#else + . = RAMTOP; + _ramstart = .; + . = . + CONFIG_OFFSET; +#endif + _text = .; + HEAD_TEXT_SECTION + .text : { + _stext = . ; + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT +#if defined(CONFIG_ROMKERNEL) + *(.int_redirect) +#endif + _etext = . ; + } + EXCEPTION_TABLE(16) + NOTES + RO_DATA_SECTION(4) + ROMEND = .; +#if defined(CONFIG_ROMKERNEL) + . = RAMTOP; + _ramstart = .; +#define ADDR(x) ROMEND +#else +#endif + _sdata = . ; + __data_start = . ; + RW_DATA_SECTION(0,0,0) +#if defined(CONFIG_ROMKERNEL) +#undef ADDR +#endif + . = ALIGN(0x4) ; + __init_begin = .; + INIT_TEXT_SECTION(4) + INIT_DATA_SECTION(4) + SECURITY_INIT + __init_end = .; + _edata = . ; + _begin_data = LOADADDR(.data); + _sbss =.; + BSS_SECTION(0, 0 ,0) + _ebss =.; + _ramend = .; + _end = .; + DISCARDS +} diff --git a/arch/h8300/lib/Makefile b/arch/h8300/lib/Makefile new file mode 100644 index 000000000000..28ff560d825f --- /dev/null +++ b/arch/h8300/lib/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for H8/300-specific library files.. +# + +lib-y = memcpy.o memset.o abs.o strncpy.o \ + mulsi3.o udivsi3.o muldi3.o moddivsi3.o \ + ashldi3.o lshrdi3.o ashrdi3.o ucmpdi2.o \ + delay.o diff --git a/arch/h8300/lib/abs.S b/arch/h8300/lib/abs.S new file mode 100644 index 000000000000..efda749db03e --- /dev/null +++ b/arch/h8300/lib/abs.S @@ -0,0 +1,20 @@ +;;; abs.S + +#include <asm/linkage.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#endif + .text +.global _abs + +;;; int abs(int n) +_abs: + mov.l er0,er0 + bpl 1f + neg.l er0 +1: + rts diff --git a/arch/h8300/lib/ashldi3.c b/arch/h8300/lib/ashldi3.c new file mode 100644 index 000000000000..c6aa8ea5f4be --- /dev/null +++ b/arch/h8300/lib/ashldi3.c @@ -0,0 +1,24 @@ +#include "libgcc.h" + +DWtype +__ashldi3(DWtype u, word_type b) +{ + const DWunion uu = {.ll = u}; + const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; + DWunion w; + + if (b == 0) + return u; + + if (bm <= 0) { + w.s.low = 0; + w.s.high = (UWtype) uu.s.low << -bm; + } else { + const UWtype carries = (UWtype) uu.s.low >> bm; + + w.s.low = (UWtype) uu.s.low << b; + w.s.high = ((UWtype) uu.s.high << b) | carries; + } + + return w.ll; +} diff --git a/arch/h8300/lib/ashrdi3.c b/arch/h8300/lib/ashrdi3.c new file mode 100644 index 000000000000..070adf96d3b6 --- /dev/null +++ b/arch/h8300/lib/ashrdi3.c @@ -0,0 +1,24 @@ +#include "libgcc.h" + +DWtype __ashrdi3(DWtype u, word_type b) +{ + const DWunion uu = {.ll = u}; + const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; + DWunion w; + + if (b == 0) + return u; + + if (bm <= 0) { + /* w.s.high = 1..1 or 0..0 */ + w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1); + w.s.low = uu.s.high >> -bm; + } else { + const UWtype carries = (UWtype) uu.s.high << bm; + + w.s.high = uu.s.high >> b; + w.s.low = ((UWtype) uu.s.low >> b) | carries; + } + + return w.ll; +} diff --git a/arch/h8300/lib/delay.c b/arch/h8300/lib/delay.c new file mode 100644 index 000000000000..463f6b3afb52 --- /dev/null +++ b/arch/h8300/lib/delay.c @@ -0,0 +1,40 @@ +/* + * delay loops + * + * Copyright (C) 2015 Yoshinori Sato + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <asm/param.h> +#include <asm/processor.h> +#include <asm/timex.h> + +void __delay(unsigned long cycles) +{ + __asm__ volatile ("1: dec.l #1,%0\n\t" + "bne 1b":"=r"(cycles):"0"(cycles)); +} +EXPORT_SYMBOL(__delay); + +void __const_udelay(unsigned long xloops) +{ + u64 loops; + + loops = (u64)xloops * loops_per_jiffy * HZ; + + __delay(loops >> 32); +} +EXPORT_SYMBOL(__const_udelay); + +void __udelay(unsigned long usecs) +{ + __const_udelay(usecs * 0x10C7UL); /* 2**32 / 1000000 (rounded up) */ +} +EXPORT_SYMBOL(__udelay); + +void __ndelay(unsigned long nsecs) +{ + __const_udelay(nsecs * 0x5UL); /* 2**32 / 1000000000 (rounded up) */ +} +EXPORT_SYMBOL(__ndelay); diff --git a/arch/h8300/lib/libgcc.h b/arch/h8300/lib/libgcc.h new file mode 100644 index 000000000000..468a8f78197a --- /dev/null +++ b/arch/h8300/lib/libgcc.h @@ -0,0 +1,77 @@ +#ifndef __H8300_LIBGCC_H__ +#define __H8300_LIBGCC_H__ + +#ifdef __ASSEMBLY__ +#define A0 r0 +#define A0L r0l +#define A0H r0h + +#define A1 r1 +#define A1L r1l +#define A1H r1h + +#define A2 r2 +#define A2L r2l +#define A2H r2h + +#define A3 r3 +#define A3L r3l +#define A3H r3h + +#define S0 r4 +#define S0L r4l +#define S0H r4h + +#define S1 r5 +#define S1L r5l +#define S1H r5h + +#define S2 r6 +#define S2L r6l +#define S2H r6h + +#define PUSHP push.l +#define POPP pop.l + +#define A0P er0 +#define A1P er1 +#define A2P er2 +#define A3P er3 +#define S0P er4 +#define S1P er5 +#define S2P er6 + +#define A0E e0 +#define A1E e1 +#define A2E e2 +#define A3E e3 +#else +#define Wtype SItype +#define UWtype USItype +#define HWtype SItype +#define UHWtype USItype +#define DWtype DItype +#define UDWtype UDItype +#define UWtype USItype +#define Wtype SItype +#define UWtype USItype +#define W_TYPE_SIZE (4 * BITS_PER_UNIT) +#define BITS_PER_UNIT (8) + +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef unsigned int UDItype __attribute__ ((mode (DI))); +struct DWstruct { + Wtype high, low; +}; +typedef union { + struct DWstruct s; + DWtype ll; +} DWunion; + +typedef int word_type __attribute__ ((mode (__word__))); + +#endif + +#endif diff --git a/arch/h8300/lib/lshrdi3.c b/arch/h8300/lib/lshrdi3.c new file mode 100644 index 000000000000..a86bbe395f17 --- /dev/null +++ b/arch/h8300/lib/lshrdi3.c @@ -0,0 +1,23 @@ +#include "libgcc.h" + +DWtype __lshrdi3(DWtype u, word_type b) +{ + const DWunion uu = {.ll = u}; + const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; + DWunion w; + + if (b == 0) + return u; + + if (bm <= 0) { + w.s.high = 0; + w.s.low = (UWtype) uu.s.high >> -bm; + } else { + const UWtype carries = (UWtype) uu.s.high << bm; + + w.s.high = (UWtype) uu.s.high >> b; + w.s.low = ((UWtype) uu.s.low >> b) | carries; + } + + return w.ll; +} diff --git a/arch/h8300/lib/memcpy.S b/arch/h8300/lib/memcpy.S new file mode 100644 index 000000000000..0c9a51fcdea1 --- /dev/null +++ b/arch/h8300/lib/memcpy.S @@ -0,0 +1,85 @@ +;;; memcpy.S + +#include <asm/linkage.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#endif + .text +.global memcpy + +;;; void *memcpy(void *to, void *from, size_t n) +memcpy: + mov.l er2,er2 + bne 1f + rts +1: + ;; address check + bld #0,r0l + bxor #0,r1l + bcs 4f + mov.l er4,@-sp + mov.l er0,@-sp + btst #0,r0l + beq 1f + ;; (aligned even) odd address + mov.b @er1,r3l + mov.b r3l,@er0 + adds #1,er1 + adds #1,er0 + dec.l #1,er2 + beq 3f +1: + ;; n < sizeof(unsigned long) check + sub.l er4,er4 + adds #4,er4 ; loop count check value + cmp.l er4,er2 + blo 2f + ;; unsigned long copy +1: + mov.l @er1,er3 + mov.l er3,@er0 + adds #4,er0 + adds #4,er1 + subs #4,er2 + cmp.l er4,er2 + bcc 1b + ;; rest +2: + mov.l er2,er2 + beq 3f +1: + mov.b @er1,r3l + mov.b r3l,@er0 + adds #1,er1 + adds #1,er0 + dec.l #1,er2 + bne 1b +3: + mov.l @sp+,er0 + mov.l @sp+,er4 + rts + + ;; odd <- even / even <- odd +4: + mov.l er4,er3 + mov.l er2,er4 + mov.l er5,er2 + mov.l er1,er5 + mov.l er6,er1 + mov.l er0,er6 +1: + eepmov.w + mov.w r4,r4 + bne 1b + dec.w #1,e4 + bpl 1b + mov.l er1,er6 + mov.l er2,er5 + mov.l er3,er4 + rts + + .end diff --git a/arch/h8300/lib/memset.S b/arch/h8300/lib/memset.S new file mode 100644 index 000000000000..18d4e709b5f4 --- /dev/null +++ b/arch/h8300/lib/memset.S @@ -0,0 +1,69 @@ +/* memset.S */ + +#include <asm/linkage.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#endif + .text + +.global memset +.global clear_user + +;;void *memset(*ptr, int c, size_t count) +;; ptr = er0 +;; c = er1(r1l) +;; count = er2 +memset: + btst #0,r0l + beq 2f + + ;; odd address +1: + mov.b r1l,@er0 + adds #1,er0 + dec.l #1,er2 + beq 6f + + ;; even address +2: + mov.l er2,er3 + cmp.l #4,er2 + blo 4f + ;; count>=4 -> count/4 +#if defined(CONFIG_CPU_H8300H) + shlr.l er2 + shlr.l er2 +#endif +#if defined(CONFIG_CPU_H8S) + shlr.l #2,er2 +#endif + ;; byte -> long + mov.b r1l,r1h + mov.w r1,e1 +3: + mov.l er1,@er0 + adds #4,er0 + dec.l #1,er2 + bne 3b +4: + ;; count % 4 + and.b #3,r3l + beq 6f +5: + mov.b r1l,@er0 + adds #1,er0 + dec.b r3l + bne 5b +6: + rts + +clear_user: + mov.l er1, er2 + sub.l er1, er1 + bra memset + + .end diff --git a/arch/h8300/lib/moddivsi3.S b/arch/h8300/lib/moddivsi3.S new file mode 100644 index 000000000000..c803129e877f --- /dev/null +++ b/arch/h8300/lib/moddivsi3.S @@ -0,0 +1,72 @@ +#include "libgcc.h" + +; numerator in A0/A1 +; denominator in A2/A3 + .global __modsi3 +__modsi3: + PUSHP S2P + bsr modnorm + bsr __divsi3 + mov.l er3,er0 + bra exitdiv + + .global __umodsi3 +__umodsi3: + bsr __udivsi3:16 + mov.l er3,er0 + rts + + .global __divsi3 +__divsi3: + PUSHP S2P + bsr divnorm + bsr __udivsi3:16 + + ; examine what the sign should be +exitdiv: + btst #3,S2L + beq reti + + ; should be -ve + neg.l A0P + +reti: + POPP S2P + rts + +divnorm: + mov.l A0P,A0P ; is the numerator -ve + stc ccr,S2L ; keep the sign in bit 3 of S2L + bge postive + + neg.l A0P ; negate arg + +postive: + mov.l A1P,A1P ; is the denominator -ve + bge postive2 + + neg.l A1P ; negate arg + xor.b #0x08,S2L ; toggle the result sign + +postive2: + rts + +;; Basically the same, except that the sign of the divisor determines +;; the sign. +modnorm: + mov.l A0P,A0P ; is the numerator -ve + stc ccr,S2L ; keep the sign in bit 3 of S2L + bge mpostive + + neg.l A0P ; negate arg + +mpostive: + mov.l A1P,A1P ; is the denominator -ve + bge mpostive2 + + neg.l A1P ; negate arg + +mpostive2: + rts + + .end diff --git a/arch/h8300/lib/modsi3.S b/arch/h8300/lib/modsi3.S new file mode 100644 index 000000000000..68b1dfc32824 --- /dev/null +++ b/arch/h8300/lib/modsi3.S @@ -0,0 +1,72 @@ +#include "libgcc.h" + +; numerator in A0/A1 +; denominator in A2/A3 + .global __modsi3 +__modsi3: + PUSHP S2P + bsr modnorm + bsr __divsi3 + mov.l er3,er0 + bra exitdiv + + .global __umodsi3 +__umodsi3: + bsr __udivsi3 + mov.l er3,er0 + rts + + .global __divsi3 +__divsi3: + PUSHP S2P + jsr divnorm + bsr __udivsi3 + + ; examine what the sign should be +exitdiv: + btst #3,S2L + beq reti + + ; should be -ve + neg.l A0P + +reti: + POPP S2P + rts + +divnorm: + mov.l A0P,A0P ; is the numerator -ve + stc ccr,S2L ; keep the sign in bit 3 of S2L + bge postive + + neg.l A0P ; negate arg + +postive: + mov.l A1P,A1P ; is the denominator -ve + bge postive2 + + neg.l A1P ; negate arg + xor.b #0x08,S2L ; toggle the result sign + +postive2: + rts + +;; Basically the same, except that the sign of the divisor determines +;; the sign. +modnorm: + mov.l A0P,A0P ; is the numerator -ve + stc ccr,S2L ; keep the sign in bit 3 of S2L + bge mpostive + + neg.l A0P ; negate arg + +mpostive: + mov.l A1P,A1P ; is the denominator -ve + bge mpostive2 + + neg.l A1P ; negate arg + +mpostive2: + rts + + .end diff --git a/arch/h8300/lib/muldi3.c b/arch/h8300/lib/muldi3.c new file mode 100644 index 000000000000..790512243531 --- /dev/null +++ b/arch/h8300/lib/muldi3.c @@ -0,0 +1,44 @@ +#include "libgcc.h" + +#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1)) +#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2)) + +#define umul_ppmm(w1, w0, u, v) \ + do { \ + UWtype __x0, __x1, __x2, __x3; \ + UHWtype __ul, __vl, __uh, __vh; \ + __ul = __ll_lowpart(u); \ + __uh = __ll_highpart(u); \ + __vl = __ll_lowpart(v); \ + __vh = __ll_highpart(v); \ + __x0 = (UWtype) __ul * __vl; \ + __x1 = (UWtype) __ul * __vh; \ + __x2 = (UWtype) __uh * __vl; \ + __x3 = (UWtype) __uh * __vh; \ + __x1 += __ll_highpart(__x0); \ + __x1 += __x2; \ + if (__x1 < __x2) \ + __x3 += __ll_B; \ + (w1) = __x3 + __ll_highpart(__x1); \ + (w0) = __ll_lowpart(__x1) * __ll_B + __ll_lowpart(__x0); \ + } while (0) + +#define __umulsidi3(u, v) ( \ + { \ + DWunion __w; \ + umul_ppmm(__w.s.high, __w.s.low, u, v); \ + __w.ll; } \ + ) + +DWtype __muldi3(DWtype u, DWtype v) +{ + const DWunion uu = {.ll = u}; + const DWunion vv = {.ll = v}; + DWunion w = {.ll = __umulsidi3(uu.s.low, vv.s.low)}; + + w.s.high += ((UWtype) uu.s.low * (UWtype) vv.s.high + + (UWtype) uu.s.high * (UWtype) vv.s.low); + + return w.ll; +} diff --git a/arch/h8300/lib/mulsi3.S b/arch/h8300/lib/mulsi3.S new file mode 100644 index 000000000000..451f0e0538ee --- /dev/null +++ b/arch/h8300/lib/mulsi3.S @@ -0,0 +1,38 @@ +; +; mulsi3 for H8/300H - based on Renesas SH implementation +; +; by Toshiyasu Morita +; +; Old code: +; +; 16b * 16b = 372 states (worst case) +; 32b * 32b = 724 states (worst case) +; +; New code: +; +; 16b * 16b = 48 states +; 16b * 32b = 72 states +; 32b * 32b = 92 states +; + + .global __mulsi3 +__mulsi3: + mov.w r1,r2 ; ( 2 states) b * d + mulxu r0,er2 ; (22 states) + + mov.w e0,r3 ; ( 2 states) a * d + beq L_skip1 ; ( 4 states) + mulxu r1,er3 ; (22 states) + add.w r3,e2 ; ( 2 states) + +L_skip1: + mov.w e1,r3 ; ( 2 states) c * b + beq L_skip2 ; ( 4 states) + mulxu r0,er3 ; (22 states) + add.w r3,e2 ; ( 2 states) + +L_skip2: + mov.l er2,er0 ; ( 2 states) + rts ; (10 states) + + .end diff --git a/arch/h8300/lib/strncpy.S b/arch/h8300/lib/strncpy.S new file mode 100644 index 000000000000..d00396a378f4 --- /dev/null +++ b/arch/h8300/lib/strncpy.S @@ -0,0 +1,34 @@ +;;; strncpy.S + +#include <asm/linkage.h> + + .text +.global strncpy_from_user + +;;; long strncpy_from_user(void *to, void *from, size_t n) +strncpy_from_user: + mov.l er2,er2 + bne 1f + sub.l er0,er0 + rts +1: + mov.l er4,@-sp + sub.l er3,er3 +2: + mov.b @er1+,r4l + mov.b r4l,@er0 + adds #1,er0 + beq 3f + inc.l #1,er3 + dec.l #1,er2 + bne 2b +3: + dec.l #1,er2 +4: + mov.b r4l,@er0 + adds #1,er0 + dec.l #1,er2 + bne 4b + mov.l er3,er0 + mov.l @sp+,er4 + rts diff --git a/arch/h8300/lib/ucmpdi2.c b/arch/h8300/lib/ucmpdi2.c new file mode 100644 index 000000000000..772399d705cb --- /dev/null +++ b/arch/h8300/lib/ucmpdi2.c @@ -0,0 +1,17 @@ +#include "libgcc.h" + +word_type __ucmpdi2(DWtype a, DWtype b) +{ + const DWunion au = {.ll = a}; + const DWunion bu = {.ll = b}; + + if ((UWtype) au.s.high < (UWtype) bu.s.high) + return 0; + else if ((UWtype) au.s.high > (UWtype) bu.s.high) + return 2; + if ((UWtype) au.s.low < (UWtype) bu.s.low) + return 0; + else if ((UWtype) au.s.low > (UWtype) bu.s.low) + return 2; + return 1; +} diff --git a/arch/h8300/lib/udivsi3.S b/arch/h8300/lib/udivsi3.S new file mode 100644 index 000000000000..bbe65610f316 --- /dev/null +++ b/arch/h8300/lib/udivsi3.S @@ -0,0 +1,76 @@ +#include "libgcc.h" + + ;; This function also computes the remainder and stores it in er3. + .global __udivsi3 +__udivsi3: + mov.w A1E,A1E ; denominator top word 0? + bne DenHighNonZero + + ; do it the easy way, see page 107 in manual + mov.w A0E,A2 + extu.l A2P + divxu.w A1,A2P + mov.w A2E,A0E + divxu.w A1,A0P + mov.w A0E,A3 + mov.w A2,A0E + extu.l A3P + rts + + ; er0 = er0 / er1 + ; er3 = er0 % er1 + ; trashes er1 er2 + ; expects er1 >= 2^16 +DenHighNonZero: + mov.l er0,er3 + mov.l er1,er2 +#ifdef CONFIG_CPU_H8300H +divmod_L21: + shlr.l er0 + shlr.l er2 ; make divisor < 2^16 + mov.w e2,e2 + bne divmod_L21 +#else + shlr.l #2,er2 ; make divisor < 2^16 + mov.w e2,e2 + beq divmod_L22A +divmod_L21: + shlr.l #2,er0 +divmod_L22: + shlr.l #2,er2 ; make divisor < 2^16 + mov.w e2,e2 + bne divmod_L21 +divmod_L22A: + rotxl.w r2 + bcs divmod_L23 + shlr.l er0 + bra divmod_L24 +divmod_L23: + rotxr.w r2 + shlr.l #2,er0 +divmod_L24: +#endif + ;; At this point, + ;; er0 contains shifted dividend + ;; er1 contains divisor + ;; er2 contains shifted divisor + ;; er3 contains dividend, later remainder + divxu.w r2,er0 ; r0 now contains the approximate quotient (AQ) + extu.l er0 + beq divmod_L25 + subs #1,er0 ; er0 = AQ - 1 + mov.w e1,r2 + mulxu.w r0,er2 ; er2 = upper (AQ - 1) * divisor + sub.w r2,e3 ; dividend - 65536 * er2 + mov.w r1,r2 + mulxu.w r0,er2 ; compute er3 = remainder (tentative) + sub.l er2,er3 ; er3 = dividend - (AQ - 1) * divisor +divmod_L25: + cmp.l er1,er3 ; is divisor < remainder? + blo divmod_L26 + adds #1,er0 + sub.l er1,er3 ; correct the remainder +divmod_L26: + rts + + .end diff --git a/arch/h8300/mm/Makefile b/arch/h8300/mm/Makefile new file mode 100644 index 000000000000..508697f0d97c --- /dev/null +++ b/arch/h8300/mm/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the linux h8300-specific parts of the memory manager. +# + +obj-y := init.o fault.o memory.o diff --git a/arch/h8300/mm/fault.c b/arch/h8300/mm/fault.c new file mode 100644 index 000000000000..5924ff555ded --- /dev/null +++ b/arch/h8300/mm/fault.c @@ -0,0 +1,57 @@ +/* + * linux/arch/h8300/mm/fault.c + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Copyright (C) 2000 Lineo, Inc. (www.lineo.com) + * + * Based on: + * + * linux/arch/m68knommu/mm/fault.c + * linux/arch/m68k/mm/fault.c + * + * Copyright (C) 1995 Hamish Macdonald + */ + +#include <linux/mman.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/ptrace.h> + +#include <asm/pgtable.h> + +void die(const char *str, struct pt_regs *fp, unsigned long err); + +/* + * This routine handles page faults. It determines the problem, and + * then passes it off to one of the appropriate routines. + * + * error_code: + * bit 0 == 0 means no page found, 1 means protection fault + * bit 1 == 0 means read, 1 means write + * + * If this routine detects a bad access, it returns 1, otherwise it + * returns 0. + */ +asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, + unsigned long error_code) +{ +#ifdef DEBUG + pr_debug("regs->sr=%#x, regs->pc=%#lx, address=%#lx, %ld\n", + regs->sr, regs->pc, address, error_code); +#endif + +/* + * Oops. The kernel tried to access some bad page. We'll have to + * terminate things with extreme prejudice. + */ + if ((unsigned long) address < PAGE_SIZE) + pr_alert("Unable to handle kernel NULL pointer dereference"); + else + pr_alert("Unable to handle kernel access"); + printk(" at virtual address %08lx\n", address); + if (!user_mode(regs)) + die("Oops", regs, error_code); + do_exit(SIGKILL); + + return 1; +} diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c new file mode 100644 index 000000000000..495a3d6b539b --- /dev/null +++ b/arch/h8300/mm/init.c @@ -0,0 +1,128 @@ +/* + * linux/arch/h8300/mm/init.c + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo, Inc. (www.lineo.com) + * + * Based on: + * + * linux/arch/m68knommu/mm/init.c + * linux/arch/m68k/mm/init.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * JAN/1999 -- hacked to support ColdFire (gerg@snapgear.com) + * DEC/2000 -- linux 2.4 support <davidm@snapgear.com> + */ + +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/ptrace.h> +#include <linux/mman.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/init.h> +#include <linux/highmem.h> +#include <linux/pagemap.h> +#include <linux/bootmem.h> +#include <linux/gfp.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/sections.h> + +/* + * BAD_PAGE is the page that is used for page faults when linux + * is out-of-memory. Older versions of linux just did a + * do_exit(), but using this instead means there is less risk + * for a process dying in kernel mode, possibly leaving a inode + * unused etc.. + * + * BAD_PAGETABLE is the accompanying page-table: it is initialized + * to point to BAD_PAGE entries. + * + * ZERO_PAGE is a special page that is used for zero-initialized + * data and COW. + */ +static unsigned long empty_bad_page_table; +static unsigned long empty_bad_page; +unsigned long empty_zero_page; + +/* + * paging_init() continues the virtual memory environment setup which + * was begun by the code in arch/head.S. + * The parameters are pointers to where to stick the starting and ending + * addresses of available kernel virtual memory. + */ +void __init paging_init(void) +{ + /* + * Make sure start_mem is page aligned, otherwise bootmem and + * page_alloc get different views og the world. + */ + unsigned long start_mem = PAGE_ALIGN(memory_start); + unsigned long end_mem = memory_end & PAGE_MASK; + + pr_debug("start_mem is %#lx\nvirtual_end is %#lx\n", + start_mem, end_mem); + + /* + * Initialize the bad page table and bad page to point + * to a couple of allocated pages. + */ + empty_bad_page_table = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + empty_bad_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + memset((void *)empty_zero_page, 0, PAGE_SIZE); + + /* + * Set up SFC/DFC registers (user data space). + */ + set_fs(USER_DS); + + pr_debug("before free_area_init\n"); + + pr_debug("free_area_init -> start_mem is %#lx\nvirtual_end is %#lx\n", + start_mem, end_mem); + + { + unsigned long zones_size[MAX_NR_ZONES] = {0, }; + + zones_size[ZONE_NORMAL] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; + free_area_init(zones_size); + } +} + +void __init mem_init(void) +{ + pr_devel("Mem_init: start=%lx, end=%lx\n", memory_start, memory_end); + + high_memory = (void *) (memory_end & PAGE_MASK); + max_mapnr = MAP_NR(high_memory); + + /* this will put all low memory onto the freelists */ + free_all_bootmem(); + + mem_init_print_info(NULL); +} + + +#ifdef CONFIG_BLK_DEV_INITRD +void free_initrd_mem(unsigned long start, unsigned long end) +{ + free_reserved_area((void *)start, (void *)end, -1, "initrd"); +} +#endif + +void +free_initmem(void) +{ + free_initmem_default(-1); +} diff --git a/arch/h8300/mm/memory.c b/arch/h8300/mm/memory.c new file mode 100644 index 000000000000..4974aa40bcb8 --- /dev/null +++ b/arch/h8300/mm/memory.c @@ -0,0 +1,53 @@ +/* + * linux/arch/h8300/mm/memory.c + * + * Copyright (C) 2002 Yoshinori Sato <ysato@users.sourceforge.jp>, + * + * Based on: + * + * linux/arch/m68knommu/mm/memory.c + * + * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * + * Based on: + * + * linux/arch/m68k/mm/memory.c + * + * Copyright (C) 1995 Hamish Macdonald + */ + +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/types.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/traps.h> +#include <asm/io.h> + +void cache_clear(unsigned long paddr, int len) +{ +} + + +void cache_push(unsigned long paddr, int len) +{ +} + +void cache_push_v(unsigned long vaddr, int len) +{ +} + +/* + * Map some physical address range into the kernel address space. + */ + +unsigned long kernel_map(unsigned long paddr, unsigned long size, + int nocacheflag, unsigned long *memavailp) +{ + return paddr; +} diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index 3d00c25382c5..9df871d53c6e 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -73,3 +73,4 @@ obj-$(CONFIG_ARCH_U8500) += ux500/ obj-$(CONFIG_COMMON_CLK_VERSATILE) += versatile/ obj-$(CONFIG_X86) += x86/ obj-$(CONFIG_ARCH_ZYNQ) += zynq/ +obj-$(CONFIG_H8300) += h8300/ diff --git a/drivers/clk/h8300/Makefile b/drivers/clk/h8300/Makefile new file mode 100644 index 000000000000..b86427c31fca --- /dev/null +++ b/drivers/clk/h8300/Makefile @@ -0,0 +1,2 @@ +obj-y += clk-div.o +obj-$(CONFIG_H8S2678) += clk-h8s2678.o diff --git a/drivers/clk/h8300/clk-div.c b/drivers/clk/h8300/clk-div.c new file mode 100644 index 000000000000..56f9eba91b83 --- /dev/null +++ b/drivers/clk/h8300/clk-div.c @@ -0,0 +1,53 @@ +/* + * H8/300 divide clock driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/of_address.h> + +static DEFINE_SPINLOCK(clklock); + +static void __init h8300_div_clk_setup(struct device_node *node) +{ + unsigned int num_parents; + struct clk *clk; + const char *clk_name = node->name; + const char *parent_name; + void __iomem *divcr = NULL; + int width; + + num_parents = of_clk_get_parent_count(node); + if (num_parents < 1) { + pr_err("%s: no parent found", clk_name); + return; + } + + divcr = of_iomap(node, 0); + if (divcr == NULL) { + pr_err("%s: failed to map divide register", clk_name); + goto error; + } + + parent_name = of_clk_get_parent_name(node, 0); + of_property_read_u32(node, "renesas,width", &width); + clk = clk_register_divider(NULL, clk_name, parent_name, + CLK_SET_RATE_GATE, divcr, 0, width, + CLK_DIVIDER_POWER_OF_TWO, &clklock); + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + return; + } + pr_err("%s: failed to register %s div clock (%ld)\n", + __func__, clk_name, PTR_ERR(clk)); +error: + if (divcr) + iounmap(divcr); +} + +CLK_OF_DECLARE(h8300_div_clk, "renesas,h8300-div-clock", h8300_div_clk_setup); diff --git a/drivers/clk/h8300/clk-h8s2678.c b/drivers/clk/h8300/clk-h8s2678.c new file mode 100644 index 000000000000..4701b093e497 --- /dev/null +++ b/drivers/clk/h8300/clk-h8s2678.c @@ -0,0 +1,146 @@ +/* + * H8S2678 clock driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/device.h> +#include <linux/of_address.h> + +static DEFINE_SPINLOCK(clklock); + +#define MAX_FREQ 33333333 +#define MIN_FREQ 8000000 + +struct pll_clock { + struct clk_hw hw; + void __iomem *sckcr; + void __iomem *pllcr; +}; + +#define to_pll_clock(_hw) container_of(_hw, struct pll_clock, hw) + +static unsigned long pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct pll_clock *pll_clock = to_pll_clock(hw); + int mul = 1 << (ctrl_inb((unsigned long)pll_clock->pllcr) & 3); + + return parent_rate * mul; +} + +static long pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + int i, m = -1; + long offset[3]; + + if (rate > MAX_FREQ) + rate = MAX_FREQ; + if (rate < MIN_FREQ) + rate = MIN_FREQ; + + for (i = 0; i < 3; i++) + offset[i] = abs(rate - (*prate * (1 << i))); + for (i = 0; i < 3; i++) + if (m < 0) + m = i; + else + m = (offset[i] < offset[m])?i:m; + + return *prate * (1 << m); +} + +static int pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + int pll; + unsigned char val; + unsigned long flags; + struct pll_clock *pll_clock = to_pll_clock(hw); + + pll = ((rate / parent_rate) / 2) & 0x03; + spin_lock_irqsave(&clklock, flags); + val = ctrl_inb((unsigned long)pll_clock->sckcr); + val |= 0x08; + ctrl_outb(val, (unsigned long)pll_clock->sckcr); + val = ctrl_inb((unsigned long)pll_clock->pllcr); + val &= ~0x03; + val |= pll; + ctrl_outb(val, (unsigned long)pll_clock->pllcr); + spin_unlock_irqrestore(&clklock, flags); + return 0; +} + +static const struct clk_ops pll_ops = { + .recalc_rate = pll_recalc_rate, + .round_rate = pll_round_rate, + .set_rate = pll_set_rate, +}; + +static void __init h8s2678_pll_clk_setup(struct device_node *node) +{ + unsigned int num_parents; + struct clk *clk; + const char *clk_name = node->name; + const char *parent_name; + struct pll_clock *pll_clock; + struct clk_init_data init; + + num_parents = of_clk_get_parent_count(node); + if (num_parents < 1) { + pr_err("%s: no parent found", clk_name); + return; + } + + + pll_clock = kzalloc(sizeof(struct pll_clock), GFP_KERNEL); + if (!pll_clock) { + pr_err("%s: failed to alloc memory", clk_name); + return; + } + + pll_clock->sckcr = of_iomap(node, 0); + if (pll_clock->sckcr == NULL) { + pr_err("%s: failed to map divide register", clk_name); + goto free_clock; + } + + pll_clock->pllcr = of_iomap(node, 1); + if (pll_clock->pllcr == NULL) { + pr_err("%s: failed to map multiply register", clk_name); + goto unmap_sckcr; + } + + parent_name = of_clk_get_parent_name(node, 0); + init.name = clk_name; + init.ops = &pll_ops; + init.flags = CLK_IS_BASIC; + init.parent_names = &parent_name; + init.num_parents = 1; + pll_clock->hw.init = &init; + + clk = clk_register(NULL, &pll_clock->hw); + if (IS_ERR(clk)) { + pr_err("%s: failed to register %s div clock (%ld)\n", + __func__, clk_name, PTR_ERR(clk)); + goto unmap_pllcr; + } + + of_clk_add_provider(node, of_clk_src_simple_get, clk); + return; + +unmap_pllcr: + iounmap(pll_clock->pllcr); +unmap_sckcr: + iounmap(pll_clock->sckcr); +free_clock: + kfree(pll_clock); +} + +CLK_OF_DECLARE(h8s2678_div_clk, "renesas,h8s2678-pll-clock", + h8s2678_pll_clk_setup); diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 32164ba3d36a..d1bd53f2f360 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -275,4 +275,11 @@ config CLKSRC_PXA help This enables OST0 support available on PXA and SA-11x0 platforms. + +config H8300_TMR16 + bool + +config H8300_TPU + bool + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 1831a588b988..2b344232262c 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -55,3 +55,6 @@ obj-$(CONFIG_ARCH_INTEGRATOR_AP) += timer-integrator-ap.o obj-$(CONFIG_CLKSRC_VERSATILE) += versatile.o obj-$(CONFIG_CLKSRC_MIPS_GIC) += mips-gic-timer.o obj-$(CONFIG_ASM9260_TIMER) += asm9260_timer.o +obj-$(CONFIG_H8300) += h8300_timer8.o +obj-$(CONFIG_H8300_TMR16) += h8300_timer16.o +obj-$(CONFIG_H8300_TPU) += h8300_tpu.o diff --git a/drivers/clocksource/h8300_timer16.c b/drivers/clocksource/h8300_timer16.c new file mode 100644 index 000000000000..82941c1e9e33 --- /dev/null +++ b/drivers/clocksource/h8300_timer16.c @@ -0,0 +1,254 @@ +/* + * H8/300 16bit Timer driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourcefoge.jp> + */ + +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/clocksource.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/of.h> + +#include <asm/segment.h> +#include <asm/irq.h> + +#define TSTR 0 +#define TSNC 1 +#define TMDR 2 +#define TOLR 3 +#define TISRA 4 +#define TISRB 5 +#define TISRC 6 + +#define TCR 0 +#define TIOR 1 +#define TCNT 2 +#define GRA 4 +#define GRB 6 + +#define FLAG_REPROGRAM (1 << 0) +#define FLAG_SKIPEVENT (1 << 1) +#define FLAG_IRQCONTEXT (1 << 2) +#define FLAG_STARTED (1 << 3) + +#define ONESHOT 0 +#define PERIODIC 1 + +#define RELATIVE 0 +#define ABSOLUTE 1 + +struct timer16_priv { + struct platform_device *pdev; + struct clocksource cs; + struct irqaction irqaction; + unsigned long total_cycles; + unsigned long mapbase; + unsigned long mapcommon; + unsigned long flags; + unsigned short gra; + unsigned short cs_enabled; + unsigned char enb; + unsigned char imfa; + unsigned char imiea; + unsigned char ovf; + raw_spinlock_t lock; + struct clk *clk; +}; + +static unsigned long timer16_get_counter(struct timer16_priv *p) +{ + unsigned long v1, v2, v3; + int o1, o2; + + o1 = ctrl_inb(p->mapcommon + TISRC) & p->ovf; + + /* Make sure the timer value is stable. Stolen from acpi_pm.c */ + do { + o2 = o1; + v1 = ctrl_inw(p->mapbase + TCNT); + v2 = ctrl_inw(p->mapbase + TCNT); + v3 = ctrl_inw(p->mapbase + TCNT); + o1 = ctrl_inb(p->mapcommon + TISRC) & p->ovf; + } while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3) + || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2))); + + v2 |= 0x10000; + return v2; +} + + +static irqreturn_t timer16_interrupt(int irq, void *dev_id) +{ + struct timer16_priv *p = (struct timer16_priv *)dev_id; + + ctrl_outb(ctrl_inb(p->mapcommon + TISRA) & ~p->imfa, + p->mapcommon + TISRA); + p->total_cycles += 0x10000; + + return IRQ_HANDLED; +} + +static inline struct timer16_priv *cs_to_priv(struct clocksource *cs) +{ + return container_of(cs, struct timer16_priv, cs); +} + +static cycle_t timer16_clocksource_read(struct clocksource *cs) +{ + struct timer16_priv *p = cs_to_priv(cs); + unsigned long flags, raw; + unsigned long value; + + raw_spin_lock_irqsave(&p->lock, flags); + value = p->total_cycles; + raw = timer16_get_counter(p); + raw_spin_unlock_irqrestore(&p->lock, flags); + + return value + raw; +} + +static int timer16_enable(struct clocksource *cs) +{ + struct timer16_priv *p = cs_to_priv(cs); + + WARN_ON(p->cs_enabled); + + p->total_cycles = 0; + ctrl_outw(0x0000, p->mapbase + TCNT); + ctrl_outb(0x83, p->mapbase + TCR); + ctrl_outb(ctrl_inb(p->mapcommon + TSTR) | p->enb, + p->mapcommon + TSTR); + + p->cs_enabled = true; + return 0; +} + +static void timer16_disable(struct clocksource *cs) +{ + struct timer16_priv *p = cs_to_priv(cs); + + WARN_ON(!p->cs_enabled); + + ctrl_outb(ctrl_inb(p->mapcommon + TSTR) & ~p->enb, + p->mapcommon + TSTR); + + p->cs_enabled = false; +} + +#define REG_CH 0 +#define REG_COMM 1 + +static int timer16_setup(struct timer16_priv *p, struct platform_device *pdev) +{ + struct resource *res[2]; + int ret, irq; + unsigned int ch; + + memset(p, 0, sizeof(*p)); + p->pdev = pdev; + + res[REG_CH] = platform_get_resource(p->pdev, + IORESOURCE_MEM, REG_CH); + res[REG_COMM] = platform_get_resource(p->pdev, + IORESOURCE_MEM, REG_COMM); + if (!res[REG_CH] || !res[REG_COMM]) { + dev_err(&p->pdev->dev, "failed to get I/O memory\n"); + return -ENXIO; + } + irq = platform_get_irq(p->pdev, 0); + if (irq < 0) { + dev_err(&p->pdev->dev, "failed to get irq\n"); + return irq; + } + + p->clk = clk_get(&p->pdev->dev, "fck"); + if (IS_ERR(p->clk)) { + dev_err(&p->pdev->dev, "can't get clk\n"); + return PTR_ERR(p->clk); + } + of_property_read_u32(p->pdev->dev.of_node, "renesas,channel", &ch); + + p->pdev = pdev; + p->mapbase = res[REG_CH]->start; + p->mapcommon = res[REG_COMM]->start; + p->enb = 1 << ch; + p->imfa = 1 << ch; + p->imiea = 1 << (4 + ch); + p->cs.name = pdev->name; + p->cs.rating = 200; + p->cs.read = timer16_clocksource_read; + p->cs.enable = timer16_enable; + p->cs.disable = timer16_disable; + p->cs.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8); + p->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS; + + ret = request_irq(irq, timer16_interrupt, + IRQF_TIMER, pdev->name, p); + if (ret < 0) { + dev_err(&p->pdev->dev, "failed to request irq %d\n", irq); + return ret; + } + + clocksource_register_hz(&p->cs, clk_get_rate(p->clk) / 8); + + return 0; +} + +static int timer16_probe(struct platform_device *pdev) +{ + struct timer16_priv *p = platform_get_drvdata(pdev); + + if (p) { + dev_info(&pdev->dev, "kept as earlytimer\n"); + return 0; + } + + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL); + if (!p) + return -ENOMEM; + + return timer16_setup(p, pdev); +} + +static int timer16_remove(struct platform_device *pdev) +{ + return -EBUSY; +} + +static const struct of_device_id timer16_of_table[] = { + { .compatible = "renesas,16bit-timer" }, + { } +}; +static struct platform_driver timer16_driver = { + .probe = timer16_probe, + .remove = timer16_remove, + .driver = { + .name = "h8300h-16timer", + .of_match_table = of_match_ptr(timer16_of_table), + } +}; + +static int __init timer16_init(void) +{ + return platform_driver_register(&timer16_driver); +} + +static void __exit timer16_exit(void) +{ + platform_driver_unregister(&timer16_driver); +} + +subsys_initcall(timer16_init); +module_exit(timer16_exit); +MODULE_AUTHOR("Yoshinori Sato"); +MODULE_DESCRIPTION("H8/300H 16bit Timer Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/clocksource/h8300_timer8.c b/drivers/clocksource/h8300_timer8.c new file mode 100644 index 000000000000..0214cb3a7f5e --- /dev/null +++ b/drivers/clocksource/h8300_timer8.c @@ -0,0 +1,313 @@ +/* + * linux/arch/h8300/kernel/cpu/timer/timer8.c + * + * Yoshinori Sato <ysato@users.sourcefoge.jp> + * + * 8bit Timer driver + * + */ + +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/clockchips.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/of.h> + +#include <asm/irq.h> + +#define _8TCR 0 +#define _8TCSR 2 +#define TCORA 4 +#define TCORB 6 +#define _8TCNT 8 + +#define FLAG_REPROGRAM (1 << 0) +#define FLAG_SKIPEVENT (1 << 1) +#define FLAG_IRQCONTEXT (1 << 2) +#define FLAG_STARTED (1 << 3) + +#define ONESHOT 0 +#define PERIODIC 1 + +#define RELATIVE 0 +#define ABSOLUTE 1 + +struct timer8_priv { + struct platform_device *pdev; + struct clock_event_device ced; + struct irqaction irqaction; + unsigned long mapbase; + raw_spinlock_t lock; + unsigned long flags; + unsigned int rate; + unsigned int tcora; + struct clk *pclk; +}; + +static unsigned long timer8_get_counter(struct timer8_priv *p) +{ + unsigned long v1, v2, v3; + int o1, o2; + + o1 = ctrl_inb(p->mapbase + _8TCSR) & 0x20; + + /* Make sure the timer value is stable. Stolen from acpi_pm.c */ + do { + o2 = o1; + v1 = ctrl_inw(p->mapbase + _8TCNT); + v2 = ctrl_inw(p->mapbase + _8TCNT); + v3 = ctrl_inw(p->mapbase + _8TCNT); + o1 = ctrl_inb(p->mapbase + _8TCSR) & 0x20; + } while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3) + || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2))); + + v2 |= o1 << 10; + return v2; +} + +static irqreturn_t timer8_interrupt(int irq, void *dev_id) +{ + struct timer8_priv *p = dev_id; + + ctrl_outb(ctrl_inb(p->mapbase + _8TCSR) & ~0x40, + p->mapbase + _8TCSR); + p->flags |= FLAG_IRQCONTEXT; + ctrl_outw(p->tcora, p->mapbase + TCORA); + if (!(p->flags & FLAG_SKIPEVENT)) { + if (p->ced.mode == CLOCK_EVT_MODE_ONESHOT) + ctrl_outw(0x0000, p->mapbase + _8TCR); + p->ced.event_handler(&p->ced); + } + p->flags &= ~(FLAG_SKIPEVENT | FLAG_IRQCONTEXT); + + return IRQ_HANDLED; +} + +static void timer8_set_next(struct timer8_priv *p, unsigned long delta) +{ + unsigned long flags; + unsigned long now; + + raw_spin_lock_irqsave(&p->lock, flags); + if (delta >= 0x10000) + dev_warn(&p->pdev->dev, "delta out of range\n"); + now = timer8_get_counter(p); + p->tcora = delta; + ctrl_outb(ctrl_inb(p->mapbase + _8TCR) | 0x40, p->mapbase + _8TCR); + if (delta > now) + ctrl_outw(delta, p->mapbase + TCORA); + else + ctrl_outw(now + 1, p->mapbase + TCORA); + + raw_spin_unlock_irqrestore(&p->lock, flags); +} + +static int timer8_enable(struct timer8_priv *p) +{ + p->rate = clk_get_rate(p->pclk) / 64; + ctrl_outw(0xffff, p->mapbase + TCORA); + ctrl_outw(0x0000, p->mapbase + _8TCNT); + ctrl_outw(0x0c02, p->mapbase + _8TCR); + + return 0; +} + +static int timer8_start(struct timer8_priv *p) +{ + int ret = 0; + unsigned long flags; + + raw_spin_lock_irqsave(&p->lock, flags); + + if (!(p->flags & FLAG_STARTED)) + ret = timer8_enable(p); + + if (ret) + goto out; + p->flags |= FLAG_STARTED; + + out: + raw_spin_unlock_irqrestore(&p->lock, flags); + + return ret; +} + +static void timer8_stop(struct timer8_priv *p) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&p->lock, flags); + + ctrl_outw(0x0000, p->mapbase + _8TCR); + + raw_spin_unlock_irqrestore(&p->lock, flags); +} + +static inline struct timer8_priv *ced_to_priv(struct clock_event_device *ced) +{ + return container_of(ced, struct timer8_priv, ced); +} + +static void timer8_clock_event_start(struct timer8_priv *p, int periodic) +{ + struct clock_event_device *ced = &p->ced; + + timer8_start(p); + + ced->shift = 32; + ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift); + ced->max_delta_ns = clockevent_delta2ns(0xffff, ced); + ced->min_delta_ns = clockevent_delta2ns(0x0001, ced); + + timer8_set_next(p, periodic?(p->rate + HZ/2) / HZ:0x10000); +} + +static void timer8_clock_event_mode(enum clock_event_mode mode, + struct clock_event_device *ced) +{ + struct timer8_priv *p = ced_to_priv(ced); + + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + dev_info(&p->pdev->dev, "used for periodic clock events\n"); + timer8_stop(p); + timer8_clock_event_start(p, PERIODIC); + break; + case CLOCK_EVT_MODE_ONESHOT: + dev_info(&p->pdev->dev, "used for oneshot clock events\n"); + timer8_stop(p); + timer8_clock_event_start(p, ONESHOT); + break; + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + timer8_stop(p); + break; + default: + break; + } +} + +static int timer8_clock_event_next(unsigned long delta, + struct clock_event_device *ced) +{ + struct timer8_priv *p = ced_to_priv(ced); + + BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT); + timer8_set_next(p, delta - 1); + + return 0; +} + +static int timer8_setup(struct timer8_priv *p, + struct platform_device *pdev) +{ + struct resource *res; + int irq; + int ret; + + memset(p, 0, sizeof(*p)); + p->pdev = pdev; + + res = platform_get_resource(p->pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&p->pdev->dev, "failed to get I/O memory\n"); + return -ENXIO; + } + + irq = platform_get_irq(p->pdev, 0); + if (irq < 0) { + dev_err(&p->pdev->dev, "failed to get irq\n"); + return -ENXIO; + } + + p->mapbase = res->start; + + p->irqaction.name = dev_name(&p->pdev->dev); + p->irqaction.handler = timer8_interrupt; + p->irqaction.dev_id = p; + p->irqaction.flags = IRQF_TIMER; + + p->pclk = clk_get(&p->pdev->dev, "fck"); + if (IS_ERR(p->pclk)) { + dev_err(&p->pdev->dev, "can't get clk\n"); + return PTR_ERR(p->pclk); + } + + p->ced.name = pdev->name; + p->ced.features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT; + p->ced.rating = 200; + p->ced.cpumask = cpumask_of(0); + p->ced.set_next_event = timer8_clock_event_next; + p->ced.set_mode = timer8_clock_event_mode; + + ret = setup_irq(irq, &p->irqaction); + if (ret < 0) { + dev_err(&p->pdev->dev, + "failed to request irq %d\n", irq); + return ret; + } + clockevents_register_device(&p->ced); + platform_set_drvdata(pdev, p); + + return 0; +} + +static int timer8_probe(struct platform_device *pdev) +{ + struct timer8_priv *p = platform_get_drvdata(pdev); + + if (p) { + dev_info(&pdev->dev, "kept as earlytimer\n"); + return 0; + } + + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL); + if (!p) + return -ENOMEM; + + return timer8_setup(p, pdev); +} + +static int timer8_remove(struct platform_device *pdev) +{ + return -EBUSY; +} + +static const struct of_device_id timer8_of_table[] __maybe_unused = { + { .compatible = "renesas,8bit-timer" }, + { } +}; + +MODULE_DEVICE_TABLE(of, timer8_of_table); +static struct platform_driver timer8_driver = { + .probe = timer8_probe, + .remove = timer8_remove, + .driver = { + .name = "h8300-8timer", + .of_match_table = of_match_ptr(timer8_of_table), + } +}; + +static int __init timer8_init(void) +{ + return platform_driver_register(&timer8_driver); +} + +static void __exit timer8_exit(void) +{ + platform_driver_unregister(&timer8_driver); +} + +subsys_initcall(timer8_init); +module_exit(timer8_exit); +MODULE_AUTHOR("Yoshinori Sato"); +MODULE_DESCRIPTION("H8/300 8bit Timer Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/clocksource/h8300_tpu.c b/drivers/clocksource/h8300_tpu.c new file mode 100644 index 000000000000..64195fdd78bf --- /dev/null +++ b/drivers/clocksource/h8300_tpu.c @@ -0,0 +1,207 @@ +/* + * H8/300 TPU Driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourcefoge.jp> + * + */ + +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/clocksource.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/of.h> + +#include <asm/irq.h> + +#define TCR 0 +#define TMDR 1 +#define TIOR 2 +#define TER 4 +#define TSR 5 +#define TCNT 6 +#define TGRA 8 +#define TGRB 10 +#define TGRC 12 +#define TGRD 14 + +struct tpu_priv { + struct platform_device *pdev; + struct clocksource cs; + struct clk *clk; + unsigned long mapbase1; + unsigned long mapbase2; + raw_spinlock_t lock; + unsigned int cs_enabled; +}; + +static inline unsigned long read_tcnt32(struct tpu_priv *p) +{ + unsigned long tcnt; + + tcnt = ctrl_inw(p->mapbase1 + TCNT) << 16; + tcnt |= ctrl_inw(p->mapbase2 + TCNT); + return tcnt; +} + +static int tpu_get_counter(struct tpu_priv *p, unsigned long long *val) +{ + unsigned long v1, v2, v3; + int o1, o2; + + o1 = ctrl_inb(p->mapbase1 + TSR) & 0x10; + + /* Make sure the timer value is stable. Stolen from acpi_pm.c */ + do { + o2 = o1; + v1 = read_tcnt32(p); + v2 = read_tcnt32(p); + v3 = read_tcnt32(p); + o1 = ctrl_inb(p->mapbase1 + TSR) & 0x10; + } while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3) + || (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2))); + + *val = v2; + return o1; +} + +static inline struct tpu_priv *cs_to_priv(struct clocksource *cs) +{ + return container_of(cs, struct tpu_priv, cs); +} + +static cycle_t tpu_clocksource_read(struct clocksource *cs) +{ + struct tpu_priv *p = cs_to_priv(cs); + unsigned long flags; + unsigned long long value; + + raw_spin_lock_irqsave(&p->lock, flags); + if (tpu_get_counter(p, &value)) + value += 0x100000000; + raw_spin_unlock_irqrestore(&p->lock, flags); + + return value; +} + +static int tpu_clocksource_enable(struct clocksource *cs) +{ + struct tpu_priv *p = cs_to_priv(cs); + + WARN_ON(p->cs_enabled); + + ctrl_outw(0, p->mapbase1 + TCNT); + ctrl_outw(0, p->mapbase2 + TCNT); + ctrl_outb(0x0f, p->mapbase1 + TCR); + ctrl_outb(0x03, p->mapbase2 + TCR); + + p->cs_enabled = true; + return 0; +} + +static void tpu_clocksource_disable(struct clocksource *cs) +{ + struct tpu_priv *p = cs_to_priv(cs); + + WARN_ON(!p->cs_enabled); + + ctrl_outb(0, p->mapbase1 + TCR); + ctrl_outb(0, p->mapbase2 + TCR); + p->cs_enabled = false; +} + +#define CH_L 0 +#define CH_H 1 + +static int __init tpu_setup(struct tpu_priv *p, struct platform_device *pdev) +{ + struct resource *res[2]; + + memset(p, 0, sizeof(*p)); + p->pdev = pdev; + + res[CH_L] = platform_get_resource(p->pdev, IORESOURCE_MEM, CH_L); + res[CH_H] = platform_get_resource(p->pdev, IORESOURCE_MEM, CH_H); + if (!res[CH_L] || !res[CH_H]) { + dev_err(&p->pdev->dev, "failed to get I/O memory\n"); + return -ENXIO; + } + + p->clk = clk_get(&p->pdev->dev, "fck"); + if (IS_ERR(p->clk)) { + dev_err(&p->pdev->dev, "can't get clk\n"); + return PTR_ERR(p->clk); + } + + p->mapbase1 = res[CH_L]->start; + p->mapbase2 = res[CH_H]->start; + + p->cs.name = pdev->name; + p->cs.rating = 200; + p->cs.read = tpu_clocksource_read; + p->cs.enable = tpu_clocksource_enable; + p->cs.disable = tpu_clocksource_disable; + p->cs.mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8); + p->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS; + clocksource_register_hz(&p->cs, clk_get_rate(p->clk) / 64); + platform_set_drvdata(pdev, p); + + return 0; +} + +static int tpu_probe(struct platform_device *pdev) +{ + struct tpu_priv *p = platform_get_drvdata(pdev); + + if (p) { + dev_info(&pdev->dev, "kept as earlytimer\n"); + return 0; + } + + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL); + if (!p) + return -ENOMEM; + + return tpu_setup(p, pdev); +} + +static int tpu_remove(struct platform_device *pdev) +{ + return -EBUSY; +} + +static const struct of_device_id tpu_of_table[] = { + { .compatible = "renesas,tpu" }, + { } +}; + +static struct platform_driver tpu_driver = { + .probe = tpu_probe, + .remove = tpu_remove, + .driver = { + .name = "h8s-tpu", + .of_match_table = of_match_ptr(tpu_of_table), + } +}; + +static int __init tpu_init(void) +{ + return platform_driver_register(&tpu_driver); +} + +static void __exit tpu_exit(void) +{ + platform_driver_unregister(&tpu_driver); +} + +subsys_initcall(tpu_init); +module_exit(tpu_exit); +MODULE_AUTHOR("Yoshinori Sato"); +MODULE_DESCRIPTION("H8S Timer Pulse Unit Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 99b9a9792975..8a7d7807b596 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -159,3 +159,11 @@ config KEYSTONE_IRQ config MIPS_GIC bool select MIPS_CM + +config RENESAS_H8300H_INTC + bool + select IRQ_DOMAIN + +config RENESAS_H8S_INTC + bool + select IRQ_DOMAIN
\ No newline at end of file diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index dda4927e47a6..f8efb7087760 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -47,3 +47,5 @@ obj-$(CONFIG_KEYSTONE_IRQ) += irq-keystone.o obj-$(CONFIG_MIPS_GIC) += irq-mips-gic.o obj-$(CONFIG_ARCH_MEDIATEK) += irq-mtk-sysirq.o obj-$(CONFIG_ARCH_DIGICOLOR) += irq-digicolor.o +obj-$(CONFIG_RENESAS_H8300H_INTC) += irq-renesas-h8300h.o +obj-$(CONFIG_RENESAS_H8S_INTC) += irq-renesas-h8s.o diff --git a/drivers/irqchip/irq-renesas-h8300h.c b/drivers/irqchip/irq-renesas-h8300h.c new file mode 100644 index 000000000000..1870e6bd3dd9 --- /dev/null +++ b/drivers/irqchip/irq-renesas-h8300h.c @@ -0,0 +1,95 @@ +/* + * H8/300H interrupt controller driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/irqchip.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <asm/io.h> + +#include "irqchip.h" + +static const char ipr_bit[] = { + 7, 6, 5, 5, + 4, 4, 4, 4, 3, 3, 3, 3, + 2, 2, 2, 2, 1, 1, 1, 1, + 0, 0, 0, 0, 15, 15, 15, 15, + 14, 14, 14, 14, 13, 13, 13, 13, + -1, -1, -1, -1, 11, 11, 11, 11, + 10, 10, 10, 10, 9, 9, 9, 9, +}; + +static void *intc_baseaddr; + +#define IPR ((unsigned long)intc_baseaddr + 6) + +static void h8300h_disable_irq(struct irq_data *data) +{ + int bit; + int irq = data->irq - 12; + + bit = ipr_bit[irq]; + if (bit >= 0) { + if (bit < 8) + ctrl_bclr(bit & 7, IPR); + else + ctrl_bclr(bit & 7, (IPR+1)); + } +} + +static void h8300h_enable_irq(struct irq_data *data) +{ + int bit; + int irq = data->irq - 12; + + bit = ipr_bit[irq]; + if (bit >= 0) { + if (bit < 8) + ctrl_bset(bit & 7, IPR); + else + ctrl_bset(bit & 7, (IPR+1)); + } +} + +struct irq_chip h8300h_irq_chip = { + .name = "H8/300H-INTC", + .irq_enable = h8300h_enable_irq, + .irq_disable = h8300h_disable_irq, +}; + +static int irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw_irq_num) +{ + irq_set_chip_and_handler(virq, &h8300h_irq_chip, handle_simple_irq); + + return 0; +} + +static struct irq_domain_ops irq_ops = { + .map = irq_map, + .xlate = irq_domain_xlate_onecell, +}; + +static int __init h8300h_intc_of_init(struct device_node *intc, + struct device_node *parent) +{ + struct irq_domain *domain; + + intc_baseaddr = of_iomap(intc, 0); + BUG_ON(!intc_baseaddr); + + /* All interrupt priority low */ + ctrl_outb(0x00, IPR + 0); + ctrl_outb(0x00, IPR + 1); + + domain = irq_domain_add_linear(intc, NR_IRQS, &irq_ops, NULL); + BUG_ON(!domain); + irq_set_default_host(domain); + return 0; +} + +IRQCHIP_DECLARE(h8300h_intc, "renesas,h8300h-intc", h8300h_intc_of_init); diff --git a/drivers/irqchip/irq-renesas-h8s.c b/drivers/irqchip/irq-renesas-h8s.c new file mode 100644 index 000000000000..64425f4de7d9 --- /dev/null +++ b/drivers/irqchip/irq-renesas-h8s.c @@ -0,0 +1,101 @@ +/* + * H8S interrupt contoller driver + * + * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#include <linux/irq.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <asm/io.h> +#include "irqchip.h" + +static void *intc_baseaddr; +#define IPRA ((unsigned long)intc_baseaddr) + +static const unsigned char ipr_table[] = { + 0x03, 0x02, 0x01, 0x00, 0x13, 0x12, 0x11, 0x10, /* 16 - 23 */ + 0x23, 0x22, 0x21, 0x20, 0x33, 0x32, 0x31, 0x30, /* 24 - 31 */ + 0x43, 0x42, 0x41, 0x40, 0x53, 0x53, 0x52, 0x52, /* 32 - 39 */ + 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, 0x51, /* 40 - 47 */ + 0x50, 0x50, 0x50, 0x50, 0x63, 0x63, 0x63, 0x63, /* 48 - 55 */ + 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, 0x62, /* 56 - 63 */ + 0x61, 0x61, 0x61, 0x61, 0x60, 0x60, 0x60, 0x60, /* 64 - 71 */ + 0x73, 0x73, 0x73, 0x73, 0x72, 0x72, 0x72, 0x72, /* 72 - 79 */ + 0x71, 0x71, 0x71, 0x71, 0x70, 0x83, 0x82, 0x81, /* 80 - 87 */ + 0x80, 0x80, 0x80, 0x80, 0x93, 0x93, 0x93, 0x93, /* 88 - 95 */ + 0x92, 0x92, 0x92, 0x92, 0x91, 0x91, 0x91, 0x91, /* 96 - 103 */ + 0x90, 0x90, 0x90, 0x90, 0xa3, 0xa3, 0xa3, 0xa3, /* 104 - 111 */ + 0xa2, 0xa2, 0xa2, 0xa2, 0xa1, 0xa1, 0xa1, 0xa1, /* 112 - 119 */ + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, /* 120 - 127 */ +}; + +static void h8s_disable_irq(struct irq_data *data) +{ + int pos; + unsigned int addr; + unsigned short pri; + int irq = data->irq; + + addr = IPRA + ((ipr_table[irq - 16] & 0xf0) >> 3); + pos = (ipr_table[irq - 16] & 0x0f) * 4; + pri = ~(0x000f << pos); + pri &= ctrl_inw(addr); + ctrl_outw(pri, addr); +} + +static void h8s_enable_irq(struct irq_data *data) +{ + int pos; + unsigned int addr; + unsigned short pri; + int irq = data->irq; + + addr = IPRA + ((ipr_table[irq - 16] & 0xf0) >> 3); + pos = (ipr_table[irq - 16] & 0x0f) * 4; + pri = ~(0x000f << pos); + pri &= ctrl_inw(addr); + pri |= 1 << pos; + ctrl_outw(pri, addr); +} + +struct irq_chip h8s_irq_chip = { + .name = "H8S-INTC", + .irq_enable = h8s_enable_irq, + .irq_disable = h8s_disable_irq, +}; + +static __init int irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw_irq_num) +{ + irq_set_chip_and_handler(virq, &h8s_irq_chip, handle_simple_irq); + + return 0; +} + +static struct irq_domain_ops irq_ops = { + .map = irq_map, + .xlate = irq_domain_xlate_onecell, +}; + +static int __init h8s_intc_of_init(struct device_node *intc, + struct device_node *parent) +{ + struct irq_domain *domain; + int n; + + intc_baseaddr = of_iomap(intc, 0); + BUG_ON(!intc_baseaddr); + + /* All interrupt priority is 0 (disable) */ + /* IPRA to IPRK */ + for (n = 0; n <= 'k' - 'a'; n++) + ctrl_outw(0x0000, IPRA + (n * 2)); + + domain = irq_domain_add_linear(intc, NR_IRQS, &irq_ops, NULL); + BUG_ON(!domain); + irq_set_default_host(domain); + return 0; +} + +IRQCHIP_DECLARE(h8s_intc, "renesas,h8s-intc", h8s_intc_of_init); diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index f8120c1bde14..dea1eff6a92c 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -728,7 +728,7 @@ config SERIAL_IP22_ZILOG_CONSOLE config SERIAL_SH_SCI tristate "SuperH SCI(F) serial port support" - depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST + depends on SUPERH || ARCH_SHMOBILE || H8300 || COMPILE_TEST select SERIAL_CORE config SERIAL_SH_SCI_NR_UARTS diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index e7d6566fafaf..95772cf4e7b0 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -84,7 +84,7 @@ struct sci_port { int overrun_bit; unsigned int error_mask; unsigned int sampling_rate; - + resource_size_t reg_size; /* Break timer */ struct timer_list break_timer; @@ -2073,23 +2073,9 @@ static const char *sci_type(struct uart_port *port) return NULL; } -static inline unsigned long sci_port_size(struct uart_port *port) -{ - /* - * Pick an arbitrary size that encapsulates all of the base - * registers by default. This can be optimized later, or derived - * from platform resource data at such a time that ports begin to - * behave more erratically. - */ - if (port->type == PORT_HSCIF) - return 96; - else - return 64; -} - static int sci_remap_port(struct uart_port *port) { - unsigned long size = sci_port_size(port); + struct sci_port *sport = to_sci_port(port); /* * Nothing to do if there's already an established membase. @@ -2098,7 +2084,7 @@ static int sci_remap_port(struct uart_port *port) return 0; if (port->flags & UPF_IOREMAP) { - port->membase = ioremap_nocache(port->mapbase, size); + port->membase = ioremap_nocache(port->mapbase, sport->reg_size); if (unlikely(!port->membase)) { dev_err(port->dev, "can't remap port#%d\n", port->line); return -ENXIO; @@ -2117,23 +2103,28 @@ static int sci_remap_port(struct uart_port *port) static void sci_release_port(struct uart_port *port) { + struct sci_port *sport = to_sci_port(port); + if (port->flags & UPF_IOREMAP) { iounmap(port->membase); port->membase = NULL; } - release_mem_region(port->mapbase, sci_port_size(port)); + release_mem_region(port->mapbase, sport->reg_size); } static int sci_request_port(struct uart_port *port) { - unsigned long size = sci_port_size(port); struct resource *res; + struct sci_port *sport = to_sci_port(port); int ret; - res = request_mem_region(port->mapbase, size, dev_name(port->dev)); - if (unlikely(res == NULL)) + res = request_mem_region(port->mapbase, sport->reg_size, + dev_name(port->dev)); + if (unlikely(res == NULL)) { + dev_err(port->dev, "request_mem_region failed."); return -EBUSY; + } ret = sci_remap_port(port); if (unlikely(ret != 0)) { @@ -2207,6 +2198,7 @@ static int sci_init_single(struct platform_device *dev, return -ENOMEM; port->mapbase = res->start; + sci_port->reg_size = resource_size(res); for (i = 0; i < ARRAY_SIZE(sci_port->irqs); ++i) sci_port->irqs[i] = platform_get_irq(dev, i); @@ -2536,6 +2528,12 @@ static const struct of_device_id of_sci_match[] = { .regtype = SCIx_HSCIF_REGTYPE, }, }, { + .compatible = "renesas,sci", + .data = &(const struct sci_port_info) { + .type = PORT_SCI, + .regtype = SCIx_SCI_REGTYPE, + }, + }, { /* Terminator */ }, }; diff --git a/include/asm-generic/asm-offsets.h b/include/asm-generic/asm-offsets.h new file mode 100644 index 000000000000..d370ee36a182 --- /dev/null +++ b/include/asm-generic/asm-offsets.h @@ -0,0 +1 @@ +#include <generated/asm-offsets.h> diff --git a/include/uapi/linux/elf-em.h b/include/uapi/linux/elf-em.h index ae99f7743cf4..b08829667ed7 100644 --- a/include/uapi/linux/elf-em.h +++ b/include/uapi/linux/elf-em.h @@ -25,6 +25,7 @@ #define EM_ARM 40 /* ARM 32 bit */ #define EM_SH 42 /* SuperH */ #define EM_SPARCV9 43 /* SPARC v9 64-bit */ +#define EM_H8_300 46 /* Renesas H8/300 */ #define EM_IA_64 50 /* HP/Intel IA-64 */ #define EM_X86_64 62 /* AMD x86-64 */ #define EM_S390 22 /* IBM S/390 */ diff --git a/scripts/mksysmap b/scripts/mksysmap index 7ada35a0f478..a35acc0d0b82 100755 --- a/scripts/mksysmap +++ b/scripts/mksysmap @@ -41,4 +41,4 @@ # so we just ignore them to let readprofile continue to work. # (At least sparc64 has __crc_ in the middle). -$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $2 +$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( .L\)' > $2 |
