diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/Kconfig | 222 | ||||
| -rw-r--r-- | arch/arm64/Kconfig.debug | 27 | ||||
| -rw-r--r-- | arch/arm64/Makefile | 71 | ||||
| -rw-r--r-- | arch/arm64/boot/.gitignore | 2 | ||||
| -rw-r--r-- | arch/arm64/boot/Makefile | 36 | ||||
| -rw-r--r-- | arch/arm64/boot/install.sh | 46 | ||||
| -rw-r--r-- | arch/arm64/configs/defconfig | 85 | ||||
| -rw-r--r-- | arch/arm64/include/asm/prom.h | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/.gitignore | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/Makefile | 27 | ||||
| -rw-r--r-- | arch/arm64/kernel/vmlinux.lds.S | 126 | ||||
| -rw-r--r-- | arch/arm64/mm/Makefile | 4 |
12 files changed, 648 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig new file mode 100644 index 000000000000..767ba5685454 --- /dev/null +++ b/arch/arm64/Kconfig @@ -0,0 +1,222 @@ +config ARM64 + def_bool y + select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select GENERIC_CLOCKEVENTS + select GENERIC_HARDIRQS_NO_DEPRECATED + select GENERIC_IOMAP + select GENERIC_IRQ_PROBE + select GENERIC_IRQ_SHOW + select GENERIC_SMP_IDLE_THREAD + select GENERIC_TIME_VSYSCALL + select HARDIRQS_SW_RESEND + select HAVE_ARCH_TRACEHOOK + select HAVE_DMA_API_DEBUG + select HAVE_DMA_ATTRS + select HAVE_GENERIC_DMA_COHERENT + select HAVE_GENERIC_HARDIRQS + select HAVE_HW_BREAKPOINT if PERF_EVENTS + select HAVE_IRQ_WORK + select HAVE_MEMBLOCK + select HAVE_PERF_EVENTS + select HAVE_SPARSE_IRQ + select IRQ_DOMAIN + select NO_BOOTMEM + select OF + select OF_EARLY_FLATTREE + select PERF_USE_VMALLOC + select RTC_LIB + select SPARSE_IRQ + help + ARM 64-bit (AArch64) Linux support. + +config 64BIT + def_bool y + +config ARCH_PHYS_ADDR_T_64BIT + def_bool y + +config MMU + def_bool y + +config NO_IOPORT + def_bool y + +config STACKTRACE_SUPPORT + def_bool y + +config LOCKDEP_SUPPORT + def_bool y + +config TRACE_IRQFLAGS_SUPPORT + def_bool y + +config GENERIC_LOCKBREAK + def_bool y + depends on SMP && PREEMPT + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_CSUM + def_bool y + +config GENERIC_CALIBRATE_DELAY + def_bool y + +config ZONE_DMA32 + def_bool y + +config ARCH_DMA_ADDR_T_64BIT + def_bool y + +config NEED_DMA_MAP_STATE + def_bool y + +config NEED_SG_DMA_LENGTH + def_bool y + +config SWIOTLB + def_bool y + +config IOMMU_HELPER + def_bool SWIOTLB + +source "init/Kconfig" + +source "kernel/Kconfig.freezer" + +menu "System Type" + +endmenu + +menu "Bus support" + +config ARM_AMBA + bool + +endmenu + +menu "Kernel Features" + +source "kernel/time/Kconfig" + +config ARM64_64K_PAGES + bool "Enable 64KB pages support" + help + This feature enables 64KB pages support (4KB by default) + allowing only two levels of page tables and faster TLB + look-up. AArch32 emulation is not available when this feature + is enabled. + +config SMP + bool "Symmetric Multi-Processing" + select USE_GENERIC_SMP_HELPERS + help + This enables support for systems with more than one CPU. If + you say N here, the kernel will run on single and + multiprocessor machines, but will use only one CPU of a + multiprocessor machine. If you say Y here, the kernel will run + on many, but not all, single processor machines. On a single + processor machine, the kernel will run faster if you say N + here. + + If you don't know what to do here, say N. + +config NR_CPUS + int "Maximum number of CPUs (2-32)" + range 2 32 + depends on SMP + default "4" + +source kernel/Kconfig.preempt + +config HZ + int + default 100 + +config ARCH_HAS_HOLES_MEMORYMODEL + def_bool y if SPARSEMEM + +config ARCH_SPARSEMEM_ENABLE + def_bool y + select SPARSEMEM_VMEMMAP_ENABLE + +config ARCH_SPARSEMEM_DEFAULT + def_bool ARCH_SPARSEMEM_ENABLE + +config ARCH_SELECT_MEMORY_MODEL + def_bool ARCH_SPARSEMEM_ENABLE + +config HAVE_ARCH_PFN_VALID + def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM + +config HW_PERF_EVENTS + bool "Enable hardware performance counter support for perf events" + depends on PERF_EVENTS + default y + help + Enable hardware performance counter support for perf events. If + disabled, perf events will use software events only. + +source "mm/Kconfig" + +endmenu + +menu "Boot options" + +config CMDLINE + string "Default kernel command string" + default "" + help + Provide a set of default command-line options at build time by + entering them here. As a minimum, you should specify the the + root device (e.g. root=/dev/nfs). + +config CMDLINE_FORCE + bool "Always use the default kernel command string" + help + Always use the default kernel command string, even if the boot + loader passes other arguments to the kernel. + This is useful if you cannot or don't want to change the + command-line options your boot loader passes to the kernel. + +endmenu + +menu "Userspace binary formats" + +source "fs/Kconfig.binfmt" + +config COMPAT + bool "Kernel support for 32-bit EL0" + depends on !ARM64_64K_PAGES + select COMPAT_BINFMT_ELF + help + This option enables support for a 32-bit EL0 running under a 64-bit + kernel at EL1. AArch32-specific components such as system calls, + the user helper functions, VFP support and the ptrace interface are + handled appropriately by the kernel. + + If you want to execute 32-bit userspace applications, say Y. + +config SYSVIPC_COMPAT + def_bool y + depends on COMPAT && SYSVIPC + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "arch/arm64/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug new file mode 100644 index 000000000000..d7553f2bda66 --- /dev/null +++ b/arch/arm64/Kconfig.debug @@ -0,0 +1,27 @@ +menu "Kernel hacking" + +source "lib/Kconfig.debug" + +config FRAME_POINTER + bool + default y + +config DEBUG_ERRORS + bool "Verbose kernel error messages" + depends on DEBUG_KERNEL + help + This option controls verbose debugging information which can be + printed when the kernel detects an internal error. This debugging + information is useful to kernel hackers when tracking down problems, + but mostly meaningless to other people. It's safe to say Y unless + you are concerned with the code size or don't want to see these + messages. + +config DEBUG_STACK_USAGE + bool "Enable stack utilization instrumentation" + depends on DEBUG_KERNEL + help + Enables the display of the minimum amount of free stack which each + task has ever had available in the sysrq-T output. + +endmenu diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile new file mode 100644 index 000000000000..364191f3be43 --- /dev/null +++ b/arch/arm64/Makefile @@ -0,0 +1,71 @@ +# +# arch/arm64/Makefile +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. +# +# 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. +# +# Copyright (C) 1995-2001 by Russell King + +LDFLAGS_vmlinux :=-p --no-undefined -X +CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET) +OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S +GZFLAGS :=-9 + +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) + +KBUILD_DEFCONFIG := defconfig + +KBUILD_CFLAGS += -mgeneral-regs-only +KBUILD_CPPFLAGS += -mlittle-endian +AS += -EL +LD += -EL + +comma = , + +CHECKFLAGS += -D__aarch64__ + +# Default value +head-y := arch/arm64/kernel/head.o + +# The byte offset of the kernel image in RAM from the start of RAM. +TEXT_OFFSET := 0x00080000 + +export TEXT_OFFSET GZFLAGS + +core-y += arch/arm64/kernel/ arch/arm64/mm/ +libs-y := arch/arm64/lib/ $(libs-y) +libs-y += $(LIBGCC) + +# Default target when executing plain make +KBUILD_IMAGE := Image.gz + +all: $(KBUILD_IMAGE) + +boot := arch/arm64/boot + +Image Image.gz: vmlinux + $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ + +zinstall install: vmlinux + $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ + +%.dtb: + $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ + +# We use MRPROPER_FILES and CLEAN_FILES now +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + +define archhelp + echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' + echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' + echo ' install - Install uncompressed kernel' + echo ' zinstall - Install compressed kernel' + echo ' Install using (your) ~/bin/installkernel or' + echo ' (distribution) /sbin/installkernel or' + echo ' install to $$(INSTALL_PATH) and run lilo' +endef diff --git a/arch/arm64/boot/.gitignore b/arch/arm64/boot/.gitignore new file mode 100644 index 000000000000..8dab0bb6ae66 --- /dev/null +++ b/arch/arm64/boot/.gitignore @@ -0,0 +1,2 @@ +Image +Image.gz diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile new file mode 100644 index 000000000000..eca209b2b0bf --- /dev/null +++ b/arch/arm64/boot/Makefile @@ -0,0 +1,36 @@ +# +# arch/arm64/boot/Makefile +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. +# +# 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. +# +# Copyright (C) 2012, ARM Ltd. +# Author: Will Deacon <will.deacon@arm.com> +# +# Based on the ia64 boot/Makefile. +# + +targets := Image Image.gz + +$(obj)/Image: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/Image.gz: $(obj)/Image FORCE + $(call if_changed,gzip) + +$(obj)/%.dtb: $(src)/dts/%.dts + $(call cmd,dtc) + +install: $(obj)/Image + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(obj)/Image System.map "$(INSTALL_PATH)" + +zinstall: $(obj)/Image.gz + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(obj)/Image.gz System.map "$(INSTALL_PATH)" + +clean-files += *.dtb diff --git a/arch/arm64/boot/install.sh b/arch/arm64/boot/install.sh new file mode 100644 index 000000000000..12ed78aa6f0c --- /dev/null +++ b/arch/arm64/boot/install.sh @@ -0,0 +1,46 @@ +#!/bin/sh +# +# arch/arm64/boot/install.sh +# +# 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. +# +# Copyright (C) 1995 by Linus Torvalds +# +# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin +# Adapted from code in arch/i386/boot/install.sh by Russell King +# +# "make install" script for the AArch64 Linux port +# +# Arguments: +# $1 - kernel version +# $2 - kernel image file +# $3 - kernel map file +# $4 - default install path (blank if root directory) +# + +# User may have a custom install script +if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi +if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi + +if [ "$(basename $2)" = "Image.gz" ]; then +# Compressed install + echo "Installing compressed kernel" + base=vmlinuz +else +# Normal install + echo "Installing normal kernel" + base=vmlinux +fi + +if [ -f $4/$base-$1 ]; then + mv $4/$base-$1 $4/$base-$1.old +fi +cat $2 > $4/$base-$1 + +# Install system map file +if [ -f $4/System.map-$1 ]; then + mv $4/System.map-$1 $4/System.map-$1.old +fi +cp $3 $4/System.map-$1 diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig new file mode 100644 index 000000000000..9212c7880da7 --- /dev/null +++ b/arch/arm64/configs/defconfig @@ -0,0 +1,85 @@ +CONFIG_EXPERIMENTAL=y +# CONFIG_LOCALVERSION_AUTO is not set +# CONFIG_SWAP is not set +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_BSD_PROCESS_ACCT_V3=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_UTS_NS is not set +# CONFIG_IPC_NS is not set +# CONFIG_PID_NS is not set +# CONFIG_NET_NS is not set +CONFIG_SCHED_AUTOGROUP=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_KALLSYMS_ALL=y +# CONFIG_COMPAT_BRK is not set +CONFIG_PROFILING=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +CONFIG_SMP=y +CONFIG_PREEMPT_VOLUNTARY=y +CONFIG_CMDLINE="console=ttyAMA0" +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_COMPAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +# CONFIG_INET_LRO is not set +# CONFIG_IPV6 is not set +# CONFIG_WIRELESS is not set +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +# CONFIG_BLK_DEV is not set +CONFIG_SCSI=y +# CONFIG_SCSI_PROC_FS is not set +CONFIG_BLK_DEV_SD=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +CONFIG_MII=y +# CONFIG_WLAN is not set +CONFIG_INPUT_EVDEV=y +# CONFIG_SERIO_I8042 is not set +# CONFIG_SERIO_SERPORT is not set +CONFIG_LEGACY_PTY_COUNT=16 +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +CONFIG_FB=y +# CONFIG_VGA_CONSOLE is not set +CONFIG_FRAMEBUFFER_CONSOLE=y +CONFIG_LOGO=y +# CONFIG_LOGO_LINUX_MONO is not set +# CONFIG_LOGO_LINUX_VGA16 is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +# CONFIG_EXT3_FS_XATTR is not set +CONFIG_FUSE_FS=y +CONFIG_CUSE=y +CONFIG_VFAT_FS=y +CONFIG_TMPFS=y +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_FS=y +CONFIG_DEBUG_KERNEL=y +# CONFIG_SCHED_DEBUG is not set +CONFIG_DEBUG_INFO=y +# CONFIG_FTRACE is not set +CONFIG_ATOMIC64_SELFTEST=y +CONFIG_DEBUG_ERRORS=y diff --git a/arch/arm64/include/asm/prom.h b/arch/arm64/include/asm/prom.h new file mode 100644 index 000000000000..68b90e682957 --- /dev/null +++ b/arch/arm64/include/asm/prom.h @@ -0,0 +1 @@ +/* Empty for now */ diff --git a/arch/arm64/kernel/.gitignore b/arch/arm64/kernel/.gitignore new file mode 100644 index 000000000000..c5f676c3c224 --- /dev/null +++ b/arch/arm64/kernel/.gitignore @@ -0,0 +1 @@ +vmlinux.lds diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile new file mode 100644 index 000000000000..e2caff1b812a --- /dev/null +++ b/arch/arm64/kernel/Makefile @@ -0,0 +1,27 @@ +# +# Makefile for the linux kernel. +# + +CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET) +AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET) + +# Object file lists. +arm64-obj-y := cputable.o debug-monitors.o entry.o irq.o fpsimd.o \ + entry-fpsimd.o process.o ptrace.o setup.o signal.o \ + sys.o stacktrace.o time.o traps.o io.o vdso.o + +arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \ + sys_compat.o +arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o +arm64-obj-$(CONFIG_SMP) += smp.o +arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o +arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT)+= hw_breakpoint.o + +obj-y += $(arm64-obj-y) vdso/ +obj-m += $(arm64-obj-m) +head-y := head.o +extra-y := $(head-y) vmlinux.lds + +# vDSO - this must be built first to generate the symbol offsets +$(call objectify,$(arm64-obj-y)): $(obj)/vdso/vdso-offsets.h +$(obj)/vdso/vdso-offsets.h: $(obj)/vdso diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S new file mode 100644 index 000000000000..3fae2be8b016 --- /dev/null +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -0,0 +1,126 @@ +/* + * ld script to make ARM Linux kernel + * taken from the i386 version by Russell King + * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> + */ + +#include <asm-generic/vmlinux.lds.h> +#include <asm/thread_info.h> +#include <asm/memory.h> +#include <asm/page.h> + +#define ARM_EXIT_KEEP(x) +#define ARM_EXIT_DISCARD(x) x + +OUTPUT_ARCH(aarch64) +ENTRY(stext) + +jiffies = jiffies_64; + +SECTIONS +{ + /* + * XXX: The linker does not define how output sections are + * assigned to input sections when there are multiple statements + * matching the same input section name. There is no documented + * order of matching. + */ + /DISCARD/ : { + ARM_EXIT_DISCARD(EXIT_TEXT) + ARM_EXIT_DISCARD(EXIT_DATA) + EXIT_CALL + *(.discard) + *(.discard.*) + } + + . = PAGE_OFFSET + TEXT_OFFSET; + + .head.text : { + _text = .; + HEAD_TEXT + } + .text : { /* Real text segment */ + _stext = .; /* Text and read-only data */ + *(.smp.pen.text) + __exception_text_start = .; + *(.exception.text) + __exception_text_end = .; + IRQENTRY_TEXT + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + *(.fixup) + *(.gnu.warning) + . = ALIGN(16); + *(.got) /* Global offset table */ + } + + RO_DATA(PAGE_SIZE) + + _etext = .; /* End of text and rodata section */ + + . = ALIGN(PAGE_SIZE); + __init_begin = .; + + INIT_TEXT_SECTION(8) + .exit.text : { + ARM_EXIT_KEEP(EXIT_TEXT) + } + . = ALIGN(16); + .init.data : { + INIT_DATA + INIT_SETUP(16) + INIT_CALLS + CON_INITCALL + SECURITY_INITCALL + INIT_RAM_FS + } + .exit.data : { + ARM_EXIT_KEEP(EXIT_DATA) + } + + PERCPU_SECTION(64) + + __init_end = .; + . = ALIGN(THREAD_SIZE); + __data_loc = .; + + .data : AT(__data_loc) { + _data = .; /* address in memory */ + _sdata = .; + + /* + * first, the init task union, aligned + * to an 8192 byte boundary. + */ + INIT_TASK_DATA(THREAD_SIZE) + NOSAVE_DATA + CACHELINE_ALIGNED_DATA(64) + READ_MOSTLY_DATA(64) + + /* + * The exception fixup table (might need resorting at runtime) + */ + . = ALIGN(32); + __start___ex_table = .; + *(__ex_table) + __stop___ex_table = .; + + /* + * and the usual data section + */ + DATA_DATA + CONSTRUCTORS + + _edata = .; + } + _edata_loc = __data_loc + SIZEOF(.data); + + NOTES + + BSS_SECTION(0, 0, 0) + _end = .; + + STABS_DEBUG + .comment 0 : { *(.comment) } +} diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile new file mode 100644 index 000000000000..3140a2abcdc2 --- /dev/null +++ b/arch/arm64/mm/Makefile @@ -0,0 +1,4 @@ +obj-y := dma-mapping.o extable.o fault.o init.o \ + cache.o copypage.o flush.o \ + ioremap.o mmap.o pgd.o mmu.o \ + context.o tlb.o proc.o |
