diff options
Diffstat (limited to 'arch/arc')
69 files changed, 715 insertions, 539 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8383155c8c82..ff2a393b635c 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -6,7 +6,6 @@ config ARC def_bool y select ARC_TIMERS - select ARCH_HAS_DMA_COHERENT_TO_PFN select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SETUP_DMA_OPS @@ -14,7 +13,7 @@ config ARC select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T - select BUILDTIME_EXTABLE_SORT + select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS select COMMON_CLK select DMA_DIRECT_REMAP @@ -29,7 +28,9 @@ config ARC select GENERIC_SMP_IDLE_THREAD select HAVE_ARCH_KGDB select HAVE_ARCH_TRACEHOOK + select HAVE_COPY_THREAD_TLS select HAVE_DEBUG_STACKOVERFLOW + select HAVE_DEBUG_KMEMLEAK select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_IOREMAP_PROT select HAVE_KERNEL_GZIP @@ -46,6 +47,7 @@ config ARC select OF_EARLY_FLATTREE select PCI_SYSCALL if PCI select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING + select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32 config ARCH_HAS_CACHE_LINE_SIZE def_bool y @@ -349,9 +351,8 @@ config NODES_SHIFT Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory zones. -if ISA_ARCOMPACT - config ARC_COMPACT_IRQ_LEVELS + depends on ISA_ARCOMPACT bool "Setup Timer IRQ as high Priority" # if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy depends on !SMP @@ -359,14 +360,10 @@ config ARC_COMPACT_IRQ_LEVELS config ARC_FPU_SAVE_RESTORE bool "Enable FPU state persistence across context switch" help - Double Precision Floating Point unit had dedicated regs which - need to be saved/restored across context-switch. - Note that ARC FPU is overly simplistic, unlike say x86, which has - hardware pieces to allow software to conditionally save/restore, - based on actual usage of FPU by a task. Thus our implemn does - this for all tasks in system. - -endif #ISA_ARCOMPACT + ARCompact FPU has internal registers to assist with Double precision + Floating Point operations. There are control and stauts registers + for floating point exceptions and rounding modes. These are + preserved across task context switch when enabled. config ARC_CANT_LLSC def_bool n @@ -525,6 +522,13 @@ config ARC_DW2_UNWIND config ARC_DBG_TLB_PARANOIA bool "Paranoia Checks in Low Level TLB Handlers" +config ARC_DBG_JUMP_LABEL + bool "Paranoid checks in Static Keys (jump labels) code" + depends on JUMP_LABEL + default y if STATIC_KEYS_SELFTEST + help + Enable paranoid checks and self-test of both ARC-specific and generic + part of static keys (jump labels) related code. endif config ARC_BUILTIN_DTB_NAME diff --git a/arch/arc/Makefile b/arch/arc/Makefile index ee6d1184c2b1..20e9ab6cc521 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -3,7 +3,7 @@ # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) # -KBUILD_DEFCONFIG := nsim_hs_defconfig +KBUILD_DEFCONFIG := haps_hs_smp_defconfig ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-) @@ -48,14 +48,6 @@ endif cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) -ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE -# Generic build system uses -O2, we want -O3 -# Note: No need to add to cflags-y as that happens anyways -# -# Disable the false maybe-uninitialized warings gcc spits out at -O3 -ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) -endif - # small data is default for elf32 tool-chain. If not usable, disable it # This also allows repurposing GP as scratch reg to gcc reg allocator disable_small_data := y diff --git a/arch/arc/boot/dts/Makefile b/arch/arc/boot/dts/Makefile index a83c4f5e928b..8483a86c743d 100644 --- a/arch/arc/boot/dts/Makefile +++ b/arch/arc/boot/dts/Makefile @@ -12,3 +12,6 @@ dtb-y := $(builtindtb-y).dtb # for CONFIG_OF_ALL_DTBS test dtstree := $(srctree)/$(src) dtb- := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts)) + +# board-specific dtc flags +DTC_FLAGS_hsdk += --pad 20 diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi index 6ec1fcdfc0d7..79ec27c043c1 100644 --- a/arch/arc/boot/dts/axc001.dtsi +++ b/arch/arc/boot/dts/axc001.dtsi @@ -28,6 +28,12 @@ clock-frequency = <750000000>; }; + input_clk: input-clk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <33333333>; + }; + core_intc: arc700-intc@cpu { compatible = "snps,arc700-intc"; interrupt-controller; diff --git a/arch/arc/boot/dts/axs101.dts b/arch/arc/boot/dts/axs101.dts index 305a7f9658e0..c4cfc5f4f427 100644 --- a/arch/arc/boot/dts/axs101.dts +++ b/arch/arc/boot/dts/axs101.dts @@ -14,6 +14,6 @@ compatible = "snps,axs101", "snps,arc-sdp"; chosen { - bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0 video=1280x720@60 print-fatal-signals=1"; + bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0 print-fatal-signals=1"; }; }; diff --git a/arch/arc/boot/dts/axs103_idu.dts b/arch/arc/boot/dts/axs103_idu.dts index 46c9136cbf2b..a934b92a8c30 100644 --- a/arch/arc/boot/dts/axs103_idu.dts +++ b/arch/arc/boot/dts/axs103_idu.dts @@ -17,6 +17,6 @@ compatible = "snps,axs103", "snps,arc-sdp"; chosen { - bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 print-fatal-signals=1 consoleblank=0 video=1280x720@60"; + bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 print-fatal-signals=1 consoleblank=0"; }; }; diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi index 08bcfed6b80f..1d109b06e7d8 100644 --- a/arch/arc/boot/dts/axs10x_mb.dtsi +++ b/arch/arc/boot/dts/axs10x_mb.dtsi @@ -61,12 +61,13 @@ clock-frequency = <25000000>; #clock-cells = <0>; }; + }; - pguclk: pguclk { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <74250000>; - }; + pguclk: pguclk@10080 { + compatible = "snps,axs10x-pgu-pll-clock"; + reg = <0x10080 0x10>, <0x110 0x10>; + #clock-cells = <0>; + clocks = <&input_clk>; }; gmac: ethernet@18000 { @@ -77,6 +78,7 @@ interrupt-names = "macirq"; phy-mode = "rgmii"; snps,pbl = < 32 >; + snps,multicast-filter-bins = <256>; clocks = <&apbclk>; clock-names = "stmmaceth"; max-speed = <100>; diff --git a/arch/arc/boot/dts/haps_hs.dts b/arch/arc/boot/dts/haps_hs.dts index 44bc522fdec8..60d578e2781f 100644 --- a/arch/arc/boot/dts/haps_hs.dts +++ b/arch/arc/boot/dts/haps_hs.dts @@ -9,13 +9,15 @@ / { model = "snps,zebu_hs"; compatible = "snps,zebu_hs"; - #address-cells = <1>; - #size-cells = <1>; + #address-cells = <2>; + #size-cells = <2>; interrupt-parent = <&core_intc>; memory { device_type = "memory"; - reg = <0x80000000 0x20000000>; /* 512 */ + /* CONFIG_LINUX_RAM_BASE needs to match low mem start */ + reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MB low mem */ + 0x1 0x00000000 0x0 0x40000000>; /* 1 GB highmem */ }; chosen { @@ -31,8 +33,9 @@ #address-cells = <1>; #size-cells = <1>; - /* child and parent address space 1:1 mapped */ - ranges; + /* only perip space at end of low mem accessible + bus addr, parent bus addr, size */ + ranges = <0x80000000 0x0 0x80000000 0x80000000>; core_clk: core_clk { #clock-cells = <0>; @@ -47,7 +50,7 @@ }; uart0: serial@f0000000 { - compatible = "ns8250"; + compatible = "ns16550a"; reg = <0xf0000000 0x2000>; interrupts = <24>; clock-frequency = <50000000>; diff --git a/arch/arc/boot/dts/haps_hs_idu.dts b/arch/arc/boot/dts/haps_hs_idu.dts index 4d6971cf5f9f..738c76cd07b3 100644 --- a/arch/arc/boot/dts/haps_hs_idu.dts +++ b/arch/arc/boot/dts/haps_hs_idu.dts @@ -54,7 +54,6 @@ }; uart0: serial@f0000000 { - /* compatible = "ns8250"; Doesn't use FIFOs */ compatible = "ns16550a"; reg = <0xf0000000 0x2000>; interrupt-parent = <&idu_intc>; diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts index bfc7f5f5d6f2..9acbeba832c0 100644 --- a/arch/arc/boot/dts/hsdk.dts +++ b/arch/arc/boot/dts/hsdk.dts @@ -65,6 +65,14 @@ clock-frequency = <33333333>; }; + reg_5v0: regulator-5v0 { + compatible = "regulator-fixed"; + + regulator-name = "5v0-supply"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + }; + cpu_intc: cpu-interrupt-controller { compatible = "snps,archs-intc"; interrupt-controller; @@ -264,6 +272,21 @@ clocks = <&input_clk>; cs-gpios = <&creg_gpio 0 GPIO_ACTIVE_LOW>, <&creg_gpio 1 GPIO_ACTIVE_LOW>; + + spi-flash@0 { + compatible = "sst26wf016b", "jedec,spi-nor"; + reg = <0>; + #address-cells = <1>; + #size-cells = <1>; + spi-max-frequency = <4000000>; + }; + + adc@1 { + compatible = "ti,adc108s102"; + reg = <1>; + vref-supply = <®_5v0>; + spi-max-frequency = <1000000>; + }; }; creg_gpio: gpio@14b0 { diff --git a/arch/arc/boot/dts/nsim_700.dts b/arch/arc/boot/dts/nsim_700.dts index 63dbaab1247d..f8832a15e174 100644 --- a/arch/arc/boot/dts/nsim_700.dts +++ b/arch/arc/boot/dts/nsim_700.dts @@ -14,11 +14,11 @@ interrupt-parent = <&core_intc>; chosen { - bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1"; + bootargs = "earlycon=uart8250,mmio32,0xf0000000,115200n8 console=ttyS0,115200n8 print-fatal-signals=1"; }; aliases { - serial0 = &arcuart0; + serial0 = &uart0; }; fpga { @@ -41,29 +41,15 @@ #interrupt-cells = <1>; }; - arcuart0: serial@c0fc1000 { - compatible = "snps,arc-uart"; - reg = <0xc0fc1000 0x100>; - interrupts = <5>; - clock-frequency = <80000000>; - current-speed = <115200>; - status = "okay"; - }; - - ethernet@c0fc2000 { - compatible = "snps,arc-emac"; - reg = <0xc0fc2000 0x3c>; - interrupts = <6>; - mac-address = [ 00 11 22 33 44 55 ]; - clock-frequency = <80000000>; - max-speed = <100>; - phy = <&phy0>; - - #address-cells = <1>; - #size-cells = <0>; - phy0: ethernet-phy@0 { - reg = <1>; - }; + uart0: serial@f0000000 { + compatible = "ns16550a"; + reg = <0xf0000000 0x2000>; + interrupts = <24>; + clock-frequency = <50000000>; + baud = <115200>; + reg-shift = <2>; + reg-io-width = <4>; + no-loopback-test = <1>; }; arcpct0: pct { diff --git a/arch/arc/boot/dts/nsim_hs.dts b/arch/arc/boot/dts/nsim_hs.dts deleted file mode 100644 index 851798a5f4e3..000000000000 --- a/arch/arc/boot/dts/nsim_hs.dts +++ /dev/null @@ -1,67 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) - */ -/dts-v1/; - -/include/ "skeleton_hs.dtsi" - -/ { - model = "snps,nsim_hs"; - compatible = "snps,nsim_hs"; - #address-cells = <2>; - #size-cells = <2>; - interrupt-parent = <&core_intc>; - - memory { - device_type = "memory"; - /* CONFIG_LINUX_RAM_BASE needs to match low mem start */ - reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MB low mem */ - 0x1 0x00000000 0x0 0x40000000>; /* 1 GB highmem */ - }; - - chosen { - bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1"; - }; - - aliases { - serial0 = &arcuart0; - }; - - fpga { - compatible = "simple-bus"; - #address-cells = <1>; - #size-cells = <1>; - - /* only perip space at end of low mem accessible - bus addr, parent bus addr, size */ - ranges = <0x80000000 0x0 0x80000000 0x80000000>; - - core_clk: core_clk { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <80000000>; - }; - - core_intc: core-interrupt-controller { - compatible = "snps,archs-intc"; - interrupt-controller; - #interrupt-cells = <1>; - }; - - arcuart0: serial@c0fc1000 { - compatible = "snps,arc-uart"; - reg = <0xc0fc1000 0x100>; - interrupts = <24>; - clock-frequency = <80000000>; - current-speed = <115200>; - status = "okay"; - }; - - arcpct0: pct { - compatible = "snps,archs-pct"; - #interrupt-cells = <1>; - interrupts = <20>; - }; - }; -}; diff --git a/arch/arc/boot/dts/nsim_hs_idu.dts b/arch/arc/boot/dts/nsim_hs_idu.dts deleted file mode 100644 index 6c559a0bd1f5..000000000000 --- a/arch/arc/boot/dts/nsim_hs_idu.dts +++ /dev/null @@ -1,65 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) - */ -/dts-v1/; - -/include/ "skeleton_hs_idu.dtsi" - -/ { - model = "snps,nsim_hs-smp"; - compatible = "snps,nsim_hs"; - interrupt-parent = <&core_intc>; - - chosen { - bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1"; - }; - - aliases { - serial0 = &arcuart0; - }; - - fpga { - compatible = "simple-bus"; - #address-cells = <1>; - #size-cells = <1>; - - /* child and parent address space 1:1 mapped */ - ranges; - - core_clk: core_clk { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <80000000>; - }; - - core_intc: core-interrupt-controller { - compatible = "snps,archs-intc"; - interrupt-controller; - #interrupt-cells = <1>; - }; - - idu_intc: idu-interrupt-controller { - compatible = "snps,archs-idu-intc"; - interrupt-controller; - interrupt-parent = <&core_intc>; - #interrupt-cells = <1>; - }; - - arcuart0: serial@c0fc1000 { - compatible = "snps,arc-uart"; - reg = <0xc0fc1000 0x100>; - interrupt-parent = <&idu_intc>; - interrupts = <0>; - clock-frequency = <80000000>; - current-speed = <115200>; - status = "okay"; - }; - - arcpct0: pct { - compatible = "snps,archs-pct"; - #interrupt-cells = <1>; - interrupts = <20>; - }; - }; -}; diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig index e31a8ebc3ecc..0016149f9583 100644 --- a/arch/arc/configs/axs101_defconfig +++ b/arch/arc/configs/axs101_defconfig @@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig index e0e8567f0d75..5b031582a1cf 100644 --- a/arch/arc/configs/axs103_defconfig +++ b/arch/arc/configs/axs103_defconfig @@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig index fcbc952bc75b..d4eec39e0112 100644 --- a/arch/arc/configs/axs103_smp_defconfig +++ b/arch/arc/configs/axs103_smp_defconfig @@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig index 436f2135bdc1..7337cdf4ffdd 100644 --- a/arch/arc/configs/haps_hs_defconfig +++ b/arch/arc/configs/haps_hs_defconfig @@ -4,23 +4,21 @@ CONFIG_POSIX_MQUEUE=y # CONFIG_CROSS_MEMORY_ATTACH is not set CONFIG_NO_HZ_IDLE=y CONFIG_HIGH_RES_TIMERS=y +CONFIG_PREEMPT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EXPERT=y CONFIG_PERF_EVENTS=y # CONFIG_COMPAT_BRK is not set CONFIG_SLAB=y +CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs" CONFIG_MODULES=y # CONFIG_BLK_DEV_BSG is not set -# CONFIG_IOSCHED_DEADLINE is not set -# CONFIG_IOSCHED_CFQ is not set -CONFIG_ISA_ARCV2=y -CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs" -CONFIG_PREEMPT=y # CONFIG_COMPACTION is not set CONFIG_NET=y CONFIG_PACKET=y @@ -29,9 +27,6 @@ CONFIG_UNIX=y CONFIG_UNIX_DIAG=y CONFIG_NET_KEY=y CONFIG_INET=y -# CONFIG_INET_XFRM_MODE_TRANSPORT is not set -# CONFIG_INET_XFRM_MODE_TUNNEL is not set -# CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_IPV6 is not set # CONFIG_WIRELESS is not set CONFIG_DEVTMPFS=y @@ -41,21 +36,12 @@ CONFIG_DEVTMPFS_MOUNT=y CONFIG_VIRTIO_BLK=y CONFIG_NETDEVICES=y CONFIG_VIRTIO_NET=y -# CONFIG_NET_VENDOR_ARC is not set -# CONFIG_NET_VENDOR_BROADCOM is not set -# CONFIG_NET_VENDOR_INTEL is not set -# CONFIG_NET_VENDOR_MARVELL is not set -# CONFIG_NET_VENDOR_MICREL is not set -# CONFIG_NET_VENDOR_NATSEMI is not set -# CONFIG_NET_VENDOR_SEEQ is not set -# CONFIG_NET_VENDOR_STMICRO is not set -# CONFIG_NET_VENDOR_VIA is not set -# CONFIG_NET_VENDOR_WIZNET is not set +# CONFIG_ETHERNET is not set # CONFIG_WLAN is not set CONFIG_INPUT_EVDEV=y -CONFIG_MOUSE_PS2_TOUCHKIT=y -# CONFIG_SERIO_SERPORT is not set -CONFIG_SERIO_ARC_PS2=y +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set # CONFIG_LEGACY_PTYS is not set CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y @@ -65,9 +51,6 @@ CONFIG_SERIAL_8250_DW=y CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set # CONFIG_HWMON is not set -CONFIG_FB=y -CONFIG_FRAMEBUFFER_CONSOLE=y -CONFIG_LOGO=y # CONFIG_HID is not set # CONFIG_USB_SUPPORT is not set CONFIG_VIRTIO_MMIO=y diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig index 33a787c375e2..bc927221afc0 100644 --- a/arch/arc/configs/haps_hs_smp_defconfig +++ b/arch/arc/configs/haps_hs_smp_defconfig @@ -4,26 +4,24 @@ CONFIG_POSIX_MQUEUE=y # CONFIG_CROSS_MEMORY_ATTACH is not set CONFIG_NO_HZ_IDLE=y CONFIG_HIGH_RES_TIMERS=y +CONFIG_PREEMPT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set # CONFIG_COMPAT_BRK is not set CONFIG_SLAB=y +CONFIG_SMP=y +CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu" CONFIG_KPROBES=y CONFIG_MODULES=y # CONFIG_BLK_DEV_BSG is not set -# CONFIG_IOSCHED_DEADLINE is not set -# CONFIG_IOSCHED_CFQ is not set -CONFIG_ISA_ARCV2=y -CONFIG_SMP=y -CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu" -CONFIG_PREEMPT=y # CONFIG_COMPACTION is not set CONFIG_NET=y CONFIG_PACKET=y @@ -32,9 +30,6 @@ CONFIG_UNIX=y CONFIG_UNIX_DIAG=y CONFIG_NET_KEY=y CONFIG_INET=y -# CONFIG_INET_XFRM_MODE_TRANSPORT is not set -# CONFIG_INET_XFRM_MODE_TUNNEL is not set -# CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_IPV6 is not set # CONFIG_WIRELESS is not set CONFIG_DEVTMPFS=y @@ -42,21 +37,12 @@ CONFIG_DEVTMPFS=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y -# CONFIG_NET_VENDOR_ARC is not set -# CONFIG_NET_VENDOR_BROADCOM is not set -# CONFIG_NET_VENDOR_INTEL is not set -# CONFIG_NET_VENDOR_MARVELL is not set -# CONFIG_NET_VENDOR_MICREL is not set -# CONFIG_NET_VENDOR_NATSEMI is not set -# CONFIG_NET_VENDOR_SEEQ is not set -# CONFIG_NET_VENDOR_STMICRO is not set -# CONFIG_NET_VENDOR_VIA is not set -# CONFIG_NET_VENDOR_WIZNET is not set +# CONFIG_ETHERNET is not set # CONFIG_WLAN is not set CONFIG_INPUT_EVDEV=y -CONFIG_MOUSE_PS2_TOUCHKIT=y -# CONFIG_SERIO_SERPORT is not set -CONFIG_SERIO_ARC_PS2=y +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set # CONFIG_LEGACY_PTYS is not set CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y @@ -66,9 +52,6 @@ CONFIG_SERIAL_8250_DW=y CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set # CONFIG_HWMON is not set -CONFIG_FB=y -CONFIG_FRAMEBUFFER_CONSOLE=y -CONFIG_LOGO=y # CONFIG_HID is not set # CONFIG_USB_SUPPORT is not set # CONFIG_IOMMU_SUPPORT is not set diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig index 403125d9c9a3..0974226fab55 100644 --- a/arch/arc/configs/hsdk_defconfig +++ b/arch/arc/configs/hsdk_defconfig @@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y CONFIG_BLK_DEV_RAM=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set @@ -31,6 +32,8 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set +CONFIG_MTD=y +CONFIG_MTD_SPI_NOR=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_NETDEVICES=y @@ -54,6 +57,8 @@ CONFIG_GPIO_SYSFS=y CONFIG_GPIO_DWAPB=y CONFIG_GPIO_SNPS_CREG=y # CONFIG_HWMON is not set +CONFIG_REGULATOR=y +CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_DRM=y # CONFIG_DRM_FBDEV_EMULATION is not set CONFIG_DRM_UDL=y @@ -71,6 +76,8 @@ CONFIG_MMC_SDHCI_PLTFM=y CONFIG_MMC_DW=y CONFIG_DMADEVICES=y CONFIG_DW_AXI_DMAC=y +CONFIG_IIO=y +CONFIG_TI_ADC108S102=y CONFIG_EXT3_FS=y CONFIG_VFAT_FS=y CONFIG_TMPFS=y diff --git a/arch/arc/configs/nps_defconfig b/arch/arc/configs/nps_defconfig index f0a077c00efa..07f26ed39f02 100644 --- a/arch/arc/configs/nps_defconfig +++ b/arch/arc/configs/nps_defconfig @@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_BLK_DEV_INITRD=y -CONFIG_SYSCTL_SYSCALL=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y # CONFIG_EPOLL is not set # CONFIG_SIGNALFD is not set # CONFIG_TIMERFD is not set diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig index de398c7b10b3..326f6cde7826 100644 --- a/arch/arc/configs/nsim_700_defconfig +++ b/arch/arc/configs/nsim_700_defconfig @@ -4,25 +4,24 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y # CONFIG_CROSS_MEMORY_ATTACH is not set CONFIG_HIGH_RES_TIMERS=y +CONFIG_PREEMPT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_KALLSYMS_ALL=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_SLUB_DEBUG is not set # CONFIG_COMPAT_BRK is not set CONFIG_ISA_ARCOMPACT=y +CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700" CONFIG_KPROBES=y CONFIG_MODULES=y # CONFIG_BLK_DEV_BSG is not set -# CONFIG_IOSCHED_DEADLINE is not set -# CONFIG_IOSCHED_CFQ is not set -CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700" -CONFIG_PREEMPT=y # CONFIG_COMPACTION is not set CONFIG_NET=y CONFIG_PACKET=y @@ -36,15 +35,18 @@ CONFIG_DEVTMPFS=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y -CONFIG_ARC_EMAC=y -CONFIG_LXT_PHY=y -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set +# CONFIG_ETHERNET is not set +# CONFIG_WLAN is not set # CONFIG_INPUT_KEYBOARD is not set # CONFIG_INPUT_MOUSE is not set # CONFIG_SERIO is not set # CONFIG_LEGACY_PTYS is not set -CONFIG_SERIAL_ARC=y -CONFIG_SERIAL_ARC_CONSOLE=y +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_NR_UARTS=1 +CONFIG_SERIAL_8250_RUNTIME_UARTS=1 +CONFIG_SERIAL_8250_DW=y +CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set # CONFIG_HWMON is not set # CONFIG_HID is not set diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig deleted file mode 100644 index 2dbd34a9ff07..000000000000 --- a/arch/arc/configs/nsim_hs_defconfig +++ /dev/null @@ -1,59 +0,0 @@ -# CONFIG_LOCALVERSION_AUTO is not set -# CONFIG_SWAP is not set -CONFIG_SYSVIPC=y -CONFIG_POSIX_MQUEUE=y -# CONFIG_CROSS_MEMORY_ATTACH is not set -CONFIG_HIGH_RES_TIMERS=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_NAMESPACES=y -# CONFIG_UTS_NS is not set -# CONFIG_PID_NS is not set -CONFIG_BLK_DEV_INITRD=y -CONFIG_KALLSYMS_ALL=y -CONFIG_EMBEDDED=y -CONFIG_PERF_EVENTS=y -# CONFIG_SLUB_DEBUG is not set -# CONFIG_COMPAT_BRK is not set -CONFIG_KPROBES=y -CONFIG_MODULES=y -CONFIG_MODULE_FORCE_LOAD=y -CONFIG_MODULE_UNLOAD=y -CONFIG_MODULE_FORCE_UNLOAD=y -# CONFIG_BLK_DEV_BSG is not set -# CONFIG_IOSCHED_DEADLINE is not set -# CONFIG_IOSCHED_CFQ is not set -CONFIG_ISA_ARCV2=y -CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs" -CONFIG_PREEMPT=y -# CONFIG_COMPACTION is not set -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_UNIX_DIAG=y -CONFIG_NET_KEY=y -CONFIG_INET=y -# CONFIG_IPV6 is not set -CONFIG_DEVTMPFS=y -# CONFIG_STANDALONE is not set -# CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_BLK_DEV is not set -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set -# CONFIG_INPUT_KEYBOARD is not set -# CONFIG_INPUT_MOUSE is not set -# CONFIG_SERIO is not set -# CONFIG_LEGACY_PTYS is not set -CONFIG_SERIAL_ARC=y -CONFIG_SERIAL_ARC_CONSOLE=y -# CONFIG_HW_RANDOM is not set -# CONFIG_HWMON is not set -# CONFIG_HID is not set -# CONFIG_USB_SUPPORT is not set -# CONFIG_IOMMU_SUPPORT is not set -CONFIG_EXT2_FS=y -CONFIG_EXT2_FS_XATTR=y -CONFIG_TMPFS=y -# CONFIG_MISC_FILESYSTEMS is not set -CONFIG_NFS_FS=y -# CONFIG_ENABLE_MUST_CHECK is not set -# CONFIG_DEBUG_PREEMPT is not set diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig deleted file mode 100644 index c7135f1e2583..000000000000 --- a/arch/arc/configs/nsim_hs_smp_defconfig +++ /dev/null @@ -1,57 +0,0 @@ -# CONFIG_LOCALVERSION_AUTO is not set -# CONFIG_SWAP is not set -# CONFIG_CROSS_MEMORY_ATTACH is not set -CONFIG_HIGH_RES_TIMERS=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_NAMESPACES=y -# CONFIG_UTS_NS is not set -# CONFIG_PID_NS is not set -CONFIG_BLK_DEV_INITRD=y -CONFIG_KALLSYMS_ALL=y -CONFIG_EMBEDDED=y -CONFIG_PERF_EVENTS=y -# CONFIG_SLUB_DEBUG is not set -# CONFIG_COMPAT_BRK is not set -CONFIG_KPROBES=y -CONFIG_MODULES=y -CONFIG_MODULE_FORCE_LOAD=y -CONFIG_MODULE_UNLOAD=y -CONFIG_MODULE_FORCE_UNLOAD=y -# CONFIG_BLK_DEV_BSG is not set -# CONFIG_IOSCHED_DEADLINE is not set -# CONFIG_IOSCHED_CFQ is not set -CONFIG_ISA_ARCV2=y -CONFIG_SMP=y -CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu" -CONFIG_PREEMPT=y -# CONFIG_COMPACTION is not set -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_UNIX_DIAG=y -CONFIG_NET_KEY=y -CONFIG_INET=y -# CONFIG_IPV6 is not set -CONFIG_DEVTMPFS=y -# CONFIG_STANDALONE is not set -# CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_BLK_DEV is not set -# CONFIG_INPUT_MOUSEDEV_PSAUX is not set -# CONFIG_INPUT_KEYBOARD is not set -# CONFIG_INPUT_MOUSE is not set -# CONFIG_SERIO is not set -# CONFIG_LEGACY_PTYS is not set -CONFIG_SERIAL_ARC=y -CONFIG_SERIAL_ARC_CONSOLE=y -# CONFIG_HW_RANDOM is not set -# CONFIG_HWMON is not set -# CONFIG_HID is not set -# CONFIG_USB_SUPPORT is not set -# CONFIG_IOMMU_SUPPORT is not set -CONFIG_EXT2_FS=y -CONFIG_EXT2_FS_XATTR=y -CONFIG_TMPFS=y -# CONFIG_MISC_FILESYSTEMS is not set -CONFIG_NFS_FS=y -# CONFIG_ENABLE_MUST_CHECK is not set diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig index 385a71d3c478..5dd470b6609e 100644 --- a/arch/arc/configs/nsimosci_defconfig +++ b/arch/arc/configs/nsimosci_defconfig @@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_KALLSYMS_ALL=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig index 248a2c3bdc12..3532e86f7bff 100644 --- a/arch/arc/configs/nsimosci_hs_defconfig +++ b/arch/arc/configs/nsimosci_hs_defconfig @@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_KALLSYMS_ALL=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig index 1a4bc7b660fb..d90448bee064 100644 --- a/arch/arc/configs/nsimosci_hs_smp_defconfig +++ b/arch/arc/configs/nsimosci_hs_smp_defconfig @@ -8,6 +8,7 @@ CONFIG_IKCONFIG_PROC=y # CONFIG_UTS_NS is not set # CONFIG_PID_NS is not set CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_PERF_EVENTS=y # CONFIG_COMPAT_BRK is not set CONFIG_KPROBES=y diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig index dc739bd093e3..a12656ec0072 100644 --- a/arch/arc/configs/tb10x_defconfig +++ b/arch/arc/configs/tb10x_defconfig @@ -14,7 +14,7 @@ CONFIG_INITRAMFS_SOURCE="../tb10x-rootfs.cpio" CONFIG_INITRAMFS_ROOT_UID=2100 CONFIG_INITRAMFS_ROOT_GID=501 # CONFIG_RD_GZIP is not set -CONFIG_SYSCTL_SYSCALL=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_KALLSYMS_ALL=y # CONFIG_AIO is not set CONFIG_EMBEDDED=y diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig index 0c3b21416819..d7c858df520c 100644 --- a/arch/arc/configs/vdk_hs38_defconfig +++ b/arch/arc/configs/vdk_hs38_defconfig @@ -4,6 +4,7 @@ CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig index f9ad9d3ee702..015c1d43889e 100644 --- a/arch/arc/configs/vdk_hs38_smp_defconfig +++ b/arch/arc/configs/vdk_hs38_smp_defconfig @@ -4,6 +4,7 @@ CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild index 393d4f5e1450..1b505694691e 100644 --- a/arch/arc/include/asm/Kbuild +++ b/arch/arc/include/asm/Kbuild @@ -17,7 +17,6 @@ generic-y += local64.h generic-y += mcs_spinlock.h generic-y += mm-arch-hooks.h generic-y += mmiowb.h -generic-y += msi.h generic-y += parport.h generic-y += percpu.h generic-y += preempt.h diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 5134f0baf33c..f7e432448e4b 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -39,6 +39,8 @@ #define ARC_REG_CLUSTER_BCR 0xcf #define ARC_REG_AUX_ICCM 0x208 /* ICCM Base Addr (ARCv2) */ #define ARC_REG_LPB_CTRL 0x488 /* ARCv2 Loop Buffer control */ +#define ARC_REG_FPU_CTRL 0x300 +#define ARC_REG_FPU_STATUS 0x301 /* Common for ARCompact and ARCv2 status register */ #define ARC_REG_STATUS32 0x0A diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h index 918804c7c1a4..d8ece4292388 100644 --- a/arch/arc/include/asm/cache.h +++ b/arch/arc/include/asm/cache.h @@ -25,6 +25,8 @@ #ifndef __ASSEMBLY__ +#include <linux/build_bug.h> + /* Uncached access macros */ #define arc_read_uncached_32(ptr) \ ({ \ diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h index f5ae394ebe06..0b8b63d0bec1 100644 --- a/arch/arc/include/asm/entry-arcv2.h +++ b/arch/arc/include/asm/entry-arcv2.h @@ -162,7 +162,7 @@ #endif #ifdef CONFIG_ARC_HAS_ACCL_REGS - ST2 r58, r59, PT_sp + 12 + ST2 r58, r59, PT_r58 #endif .endm @@ -172,8 +172,8 @@ LD2 gp, fp, PT_r26 ; gp (r26), fp (r27) - ld r12, [sp, PT_sp + 4] - ld r30, [sp, PT_sp + 8] + ld r12, [sp, PT_r12] + ld r30, [sp, PT_r30] ; Restore SP (into AUX_USER_SP) only if returning to U mode ; - for K mode, it will be implicitly restored as stack is unwound @@ -190,7 +190,7 @@ #endif #ifdef CONFIG_ARC_HAS_ACCL_REGS - LD2 r58, r59, PT_sp + 12 + LD2 r58, r59, PT_r58 #endif .endm @@ -256,7 +256,7 @@ .macro FAKE_RET_FROM_EXCPN lr r9, [status32] - bic r9, r9, (STATUS_U_MASK|STATUS_DE_MASK|STATUS_AE_MASK) + bic r9, r9, STATUS_AE_MASK or r9, r9, STATUS_IE_MASK kflag r9 .endm diff --git a/arch/arc/include/asm/entry-compact.h b/arch/arc/include/asm/entry-compact.h index 66a292335ee6..c3aa775878dc 100644 --- a/arch/arc/include/asm/entry-compact.h +++ b/arch/arc/include/asm/entry-compact.h @@ -130,7 +130,7 @@ * to be saved again on kernel mode stack, as part of pt_regs. *-------------------------------------------------------------*/ .macro PROLOG_FREEUP_REG reg, mem -#ifdef CONFIG_SMP +#ifndef ARC_USE_SCRATCH_REG sr \reg, [ARC_REG_SCRATCH_DATA0] #else st \reg, [\mem] @@ -138,7 +138,7 @@ .endm .macro PROLOG_RESTORE_REG reg, mem -#ifdef CONFIG_SMP +#ifndef ARC_USE_SCRATCH_REG lr \reg, [ARC_REG_SCRATCH_DATA0] #else ld \reg, [\mem] diff --git a/arch/arc/include/asm/fpu.h b/arch/arc/include/asm/fpu.h new file mode 100644 index 000000000000..64347250fdf5 --- /dev/null +++ b/arch/arc/include/asm/fpu.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2020 Synopsys, Inc. (www.synopsys.com) + * + */ + +#ifndef _ASM_ARC_FPU_H +#define _ASM_ARC_FPU_H + +#ifdef CONFIG_ARC_FPU_SAVE_RESTORE + +#include <asm/ptrace.h> + +#ifdef CONFIG_ISA_ARCOMPACT + +/* These DPFP regs need to be saved/restored across ctx-sw */ +struct arc_fpu { + struct { + unsigned int l, h; + } aux_dpfp[2]; +}; + +#define fpu_init_task(regs) + +#else + +/* + * ARCv2 FPU Control aux register + * - bits to enable Traps on Exceptions + * - Rounding mode + * + * ARCv2 FPU Status aux register + * - FPU exceptions flags (Inv, Div-by-Zero, overflow, underflow, inexact) + * - Flag Write Enable to clear flags explicitly (vs. by fpu instructions + * only + */ + +struct arc_fpu { + unsigned int ctrl, status; +}; + +extern void fpu_init_task(struct pt_regs *regs); + +#endif /* !CONFIG_ISA_ARCOMPACT */ + +extern void fpu_save_restore(struct task_struct *p, struct task_struct *n); + +#else /* !CONFIG_ARC_FPU_SAVE_RESTORE */ + +#define fpu_save_restore(p, n) +#define fpu_init_task(regs) + +#endif /* CONFIG_ARC_FPU_SAVE_RESTORE */ + +#endif /* _ASM_ARC_FPU_H */ diff --git a/arch/arc/include/asm/hugepage.h b/arch/arc/include/asm/hugepage.h index 9a74ce71a767..30ac40fed2c5 100644 --- a/arch/arc/include/asm/hugepage.h +++ b/arch/arc/include/asm/hugepage.h @@ -8,7 +8,6 @@ #define _ASM_ARC_HUGEPAGE_H #include <linux/types.h> -#define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> static inline pte_t pmd_pte(pmd_t pmd) diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h index 72f7929736f8..8f777d6441a5 100644 --- a/arch/arc/include/asm/io.h +++ b/arch/arc/include/asm/io.h @@ -34,10 +34,6 @@ static inline void ioport_unmap(void __iomem *addr) extern void iounmap(const void __iomem *addr); -#define ioremap_nocache(phy, sz) ioremap(phy, sz) -#define ioremap_wc(phy, sz) ioremap(phy, sz) -#define ioremap_wt(phy, sz) ioremap(phy, sz) - /* * io{read,write}{16,32}be() macros */ diff --git a/arch/arc/include/asm/jump_label.h b/arch/arc/include/asm/jump_label.h new file mode 100644 index 000000000000..9d9618079739 --- /dev/null +++ b/arch/arc/include/asm/jump_label.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ARC_JUMP_LABEL_H +#define _ASM_ARC_JUMP_LABEL_H + +#ifndef __ASSEMBLY__ + +#include <linux/stringify.h> +#include <linux/types.h> + +#define JUMP_LABEL_NOP_SIZE 4 + +/* + * NOTE about '.balign 4': + * + * To make atomic update of patched instruction available we need to guarantee + * that this instruction doesn't cross L1 cache line boundary. + * + * As of today we simply align instruction which can be patched by 4 byte using + * ".balign 4" directive. In that case patched instruction is aligned with one + * 16-bit NOP_S if this is required. + * However 'align by 4' directive is much stricter than it actually required. + * It's enough that our 32-bit instruction don't cross L1 cache line boundary / + * L1 I$ fetch block boundary which can be achieved by using + * ".bundle_align_mode" assembler directive. That will save us from adding + * useless NOP_S padding in most of the cases. + * + * TODO: switch to ".bundle_align_mode" directive using whin it will be + * supported by ARC toolchain. + */ + +static __always_inline bool arch_static_branch(struct static_key *key, + bool branch) +{ + asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + "1: \n" + "nop \n" + ".pushsection __jump_table, \"aw\" \n" + ".word 1b, %l[l_yes], %c0 \n" + ".popsection \n" + : : "i" (&((char *)key)[branch]) : : l_yes); + + return false; +l_yes: + return true; +} + +static __always_inline bool arch_static_branch_jump(struct static_key *key, + bool branch) +{ + asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + "1: \n" + "b %l[l_yes] \n" + ".pushsection __jump_table, \"aw\" \n" + ".word 1b, %l[l_yes], %c0 \n" + ".popsection \n" + : : "i" (&((char *)key)[branch]) : : l_yes); + + return false; +l_yes: + return true; +} + +typedef u32 jump_label_t; + +struct jump_entry { + jump_label_t code; + jump_label_t target; + jump_label_t key; +}; + +#endif /* __ASSEMBLY__ */ +#endif diff --git a/arch/arc/include/asm/linkage.h b/arch/arc/include/asm/linkage.h index a0eeb9f8f0a9..d9ee43c6b7db 100644 --- a/arch/arc/include/asm/linkage.h +++ b/arch/arc/include/asm/linkage.h @@ -62,15 +62,15 @@ #else /* !__ASSEMBLY__ */ #ifdef CONFIG_ARC_HAS_ICCM -#define __arcfp_code __attribute__((__section__(".text.arcfp"))) +#define __arcfp_code __section(.text.arcfp) #else -#define __arcfp_code __attribute__((__section__(".text"))) +#define __arcfp_code __section(.text) #endif #ifdef CONFIG_ARC_HAS_DCCM -#define __arcfp_data __attribute__((__section__(".data.arcfp"))) +#define __arcfp_data __section(.data.arcfp) #else -#define __arcfp_data __attribute__((__section__(".data"))) +#define __arcfp_data __section(.data) #endif #endif /* __ASSEMBLY__ */ diff --git a/arch/arc/include/asm/mach_desc.h b/arch/arc/include/asm/mach_desc.h index 8ac0e2ac3e70..73746ed5b834 100644 --- a/arch/arc/include/asm/mach_desc.h +++ b/arch/arc/include/asm/mach_desc.h @@ -53,8 +53,7 @@ extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; */ #define MACHINE_START(_type, _name) \ static const struct machine_desc __mach_desc_##_type \ -__used \ -__attribute__((__section__(".arch.info.init"))) = { \ +__used __section(.arch.info.init) = { \ .name = _name, #define MACHINE_END \ diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h index 98cadf1a09ac..26b731d32a2b 100644 --- a/arch/arc/include/asm/mmu.h +++ b/arch/arc/include/asm/mmu.h @@ -40,6 +40,10 @@ #define ARC_REG_SCRATCH_DATA0 0x46c #endif +#if defined(CONFIG_ISA_ARCV2) || !defined(CONFIG_SMP) +#define ARC_USE_SCRATCH_REG +#endif + /* Bits in MMU PID register */ #define __TLB_ENABLE (1 << 31) #define __PROG_ENABLE (1 << 30) @@ -63,6 +67,8 @@ #if (CONFIG_ARC_MMU_VER >= 2) #define TLBWriteNI 0x5 /* write JTLB without inv uTLBs */ #define TLBIVUTLB 0x6 /* explicitly inv uTLBs */ +#else +#define TLBWriteNI TLBWrite /* Not present in hardware, fallback */ #endif #if (CONFIG_ARC_MMU_VER >= 4) diff --git a/arch/arc/include/asm/mmu_context.h b/arch/arc/include/asm/mmu_context.h index 035470816be5..3a5e6a5b9ed6 100644 --- a/arch/arc/include/asm/mmu_context.h +++ b/arch/arc/include/asm/mmu_context.h @@ -144,7 +144,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, */ cpumask_set_cpu(cpu, mm_cpumask(next)); -#ifndef CONFIG_SMP +#ifdef ARC_USE_SCRATCH_REG /* PGD cached in MMU reg to avoid 3 mem lookups: task->mm->pgd */ write_aux_reg(ARC_REG_SCRATCH_DATA0, next->pgd); #endif diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h index 9bdb8ed5b0db..b747f2ec2928 100644 --- a/arch/arc/include/asm/pgalloc.h +++ b/arch/arc/include/asm/pgalloc.h @@ -108,7 +108,7 @@ pte_alloc_one(struct mm_struct *mm) return 0; memzero((void *)pte_pg, PTRS_PER_PTE * sizeof(pte_t)); page = virt_to_page(pte_pg); - if (!pgtable_page_ctor(page)) { + if (!pgtable_pte_page_ctor(page)) { __free_page(page); return 0; } @@ -123,13 +123,12 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) static inline void pte_free(struct mm_struct *mm, pgtable_t ptep) { - pgtable_page_dtor(virt_to_page(ptep)); + pgtable_pte_page_dtor(virt_to_page(ptep)); free_pages((unsigned long)ptep, __get_order_pte()); } #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) -#define check_pgt_cache() do { } while (0) #define pmd_pgtable(pmd) ((pgtable_t) pmd_page_vaddr(pmd)) #endif /* _ASM_ARC_PGALLOC_H */ diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 1d87c18a2976..12be7e1b7cc0 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -33,7 +33,6 @@ #define _ASM_ARC_PGTABLE_H #include <linux/bits.h> -#define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> #include <asm/page.h> #include <asm/mmu.h> /* to propagate CONFIG_ARC_MMU_VER <n> */ @@ -274,6 +273,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep) #define pmd_none(x) (!pmd_val(x)) #define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK)) #define pmd_present(x) (pmd_val(x)) +#define pmd_leaf(x) (pmd_val(x) & _PAGE_HW_SZ) #define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0) #define pte_page(pte) pfn_to_page(pte_pfn(pte)) @@ -351,7 +351,7 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, * Thus use this macro only when you are certain that "current" is current * e.g. when dealing with signal frame setup code etc */ -#ifndef CONFIG_SMP +#ifdef ARC_USE_SCRATCH_REG #define pgd_offset_fast(mm, addr) \ ({ \ pgd_t *pgd_base = (pgd_t *) read_aux_reg(ARC_REG_SCRATCH_DATA0); \ @@ -395,11 +395,6 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, /* to cope with aliasing VIPT cache */ #define HAVE_ARCH_UNMAPPED_AREA -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) - #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h index 706edeaa5583..ec532d1e0725 100644 --- a/arch/arc/include/asm/processor.h +++ b/arch/arc/include/asm/processor.h @@ -14,15 +14,7 @@ #ifndef __ASSEMBLY__ #include <asm/ptrace.h> - -#ifdef CONFIG_ARC_FPU_SAVE_RESTORE -/* These DPFP regs need to be saved/restored across ctx-sw */ -struct arc_fpu { - struct { - unsigned int l, h; - } aux_dpfp[2]; -}; -#endif +#include <asm/fpu.h> #ifdef CONFIG_ARC_PLAT_EZNPS struct eznps_dp { diff --git a/arch/arc/include/asm/switch_to.h b/arch/arc/include/asm/switch_to.h index 77f123385e96..aadf65b2b56c 100644 --- a/arch/arc/include/asm/switch_to.h +++ b/arch/arc/include/asm/switch_to.h @@ -9,19 +9,7 @@ #ifndef __ASSEMBLY__ #include <linux/sched.h> - -#ifdef CONFIG_ARC_FPU_SAVE_RESTORE - -extern void fpu_save_restore(struct task_struct *p, struct task_struct *n); -#define ARC_FPU_PREV(p, n) fpu_save_restore(p, n) -#define ARC_FPU_NEXT(t) - -#else - -#define ARC_FPU_PREV(p, n) -#define ARC_FPU_NEXT(n) - -#endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */ +#include <asm/fpu.h> #ifdef CONFIG_ARC_PLAT_EZNPS extern void dp_save_restore(struct task_struct *p, struct task_struct *n); @@ -36,9 +24,8 @@ struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n); #define switch_to(prev, next, last) \ do { \ ARC_EZNPS_DP_PREV(prev, next); \ - ARC_FPU_PREV(prev, next); \ + fpu_save_restore(prev, next); \ last = __switch_to(prev, next);\ - ARC_FPU_NEXT(next); \ mb(); \ } while (0) diff --git a/arch/arc/include/asm/syscalls.h b/arch/arc/include/asm/syscalls.h index 7ddba13e9b59..c3f4714a4f5c 100644 --- a/arch/arc/include/asm/syscalls.h +++ b/arch/arc/include/asm/syscalls.h @@ -11,6 +11,7 @@ #include <linux/types.h> int sys_clone_wrapper(int, int, int, int, int); +int sys_clone3_wrapper(void *, size_t); int sys_cacheflush(uint32_t, uint32_t uint32_t); int sys_arc_settls(void *); int sys_arc_gettls(void); diff --git a/arch/arc/include/asm/vmalloc.h b/arch/arc/include/asm/vmalloc.h new file mode 100644 index 000000000000..973095aad665 --- /dev/null +++ b/arch/arc/include/asm/vmalloc.h @@ -0,0 +1,4 @@ +#ifndef _ASM_ARC_VMALLOC_H +#define _ASM_ARC_VMALLOC_H + +#endif /* _ASM_ARC_VMALLOC_H */ diff --git a/arch/arc/include/uapi/asm/unistd.h b/arch/arc/include/uapi/asm/unistd.h index 5eafa1115162..fa2713ae6bea 100644 --- a/arch/arc/include/uapi/asm/unistd.h +++ b/arch/arc/include/uapi/asm/unistd.h @@ -21,6 +21,7 @@ #define __ARCH_WANT_SET_GET_RLIMIT #define __ARCH_WANT_SYS_EXECVE #define __ARCH_WANT_SYS_CLONE +#define __ARCH_WANT_SYS_CLONE3 #define __ARCH_WANT_SYS_VFORK #define __ARCH_WANT_SYS_FORK #define __ARCH_WANT_TIME32_SYSCALLS diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile index de6251132310..75539670431a 100644 --- a/arch/arc/kernel/Makefile +++ b/arch/arc/kernel/Makefile @@ -20,9 +20,12 @@ obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_ARC_METAWARE_HLINK) += arc_hostlink.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o +obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_ARC_FPU_SAVE_RESTORE) += fpu.o +ifdef CONFIG_ISA_ARCOMPACT CFLAGS_fpu.o += -mdpfp +endif ifdef CONFIG_ARC_DW2_UNWIND CFLAGS_ctx_sw.o += -fno-omit-frame-pointer diff --git a/arch/arc/kernel/asm-offsets.c b/arch/arc/kernel/asm-offsets.c index 1f621e416521..c783bcd35eb8 100644 --- a/arch/arc/kernel/asm-offsets.c +++ b/arch/arc/kernel/asm-offsets.c @@ -66,7 +66,15 @@ int main(void) DEFINE(SZ_CALLEE_REGS, sizeof(struct callee_regs)); DEFINE(SZ_PT_REGS, sizeof(struct pt_regs)); - DEFINE(PT_user_r25, offsetof(struct pt_regs, user_r25)); + +#ifdef CONFIG_ISA_ARCV2 + OFFSET(PT_r12, pt_regs, r12); + OFFSET(PT_r30, pt_regs, r30); +#endif +#ifdef CONFIG_ARC_HAS_ACCL_REGS + OFFSET(PT_r58, pt_regs, r58); + OFFSET(PT_r59, pt_regs, r59); +#endif return 0; } diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 72be01270e24..60406ec62eb8 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -35,6 +35,18 @@ ENTRY(sys_clone_wrapper) b .Lret_from_system_call END(sys_clone_wrapper) +ENTRY(sys_clone3_wrapper) + SAVE_CALLEE_SAVED_USER + bl @sys_clone3 + DISCARD_CALLEE_SAVED_USER + + GET_CURR_THR_INFO_FLAGS r10 + btst r10, TIF_SYSCALL_TRACE + bnz tracesys_exit + + b .Lret_from_system_call +END(sys_clone3_wrapper) + ENTRY(ret_from_fork) ; when the forked child comes here from the __switch_to function ; r0 has the last task pointer. @@ -337,11 +349,11 @@ resume_user_mode_begin: resume_kernel_mode: ; Disable Interrupts from this point on - ; CONFIG_PREEMPT: This is a must for preempt_schedule_irq() - ; !CONFIG_PREEMPT: To ensure restore_regs is intr safe + ; CONFIG_PREEMPTION: This is a must for preempt_schedule_irq() + ; !CONFIG_PREEMPTION: To ensure restore_regs is intr safe IRQ_DISABLE r9 -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION ; Can't preempt if preemption disabled GET_CURR_THR_INFO_FROM_SP r10 diff --git a/arch/arc/kernel/fpu.c b/arch/arc/kernel/fpu.c index 07e22b563fbb..c67c0f0f5f77 100644 --- a/arch/arc/kernel/fpu.c +++ b/arch/arc/kernel/fpu.c @@ -6,7 +6,9 @@ */ #include <linux/sched.h> -#include <asm/switch_to.h> +#include <asm/fpu.h> + +#ifdef CONFIG_ISA_ARCOMPACT /* * To save/restore FPU regs, simplest scheme would use LR/SR insns. @@ -50,3 +52,28 @@ void fpu_save_restore(struct task_struct *prev, struct task_struct *next) : "r" (zero), "r" (*(readfrom + 3)), "r" (*(readfrom + 2)) ); } + +#else + +void fpu_init_task(struct pt_regs *regs) +{ + /* default rounding mode */ + write_aux_reg(ARC_REG_FPU_CTRL, 0x100); + + /* set "Write enable" to allow explicit write to exception flags */ + write_aux_reg(ARC_REG_FPU_STATUS, 0x80000000); +} + +void fpu_save_restore(struct task_struct *prev, struct task_struct *next) +{ + struct arc_fpu *save = &prev->thread.fpu; + struct arc_fpu *restore = &next->thread.fpu; + + save->ctrl = read_aux_reg(ARC_REG_FPU_CTRL); + save->status = read_aux_reg(ARC_REG_FPU_STATUS); + + write_aux_reg(ARC_REG_FPU_CTRL, restore->ctrl); + write_aux_reg(ARC_REG_FPU_STATUS, restore->status); +} + +#endif diff --git a/arch/arc/kernel/jump_label.c b/arch/arc/kernel/jump_label.c new file mode 100644 index 000000000000..b8600dc325b5 --- /dev/null +++ b/arch/arc/kernel/jump_label.c @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/kernel.h> +#include <linux/jump_label.h> + +#include "asm/cacheflush.h" + +#define JUMPLABEL_ERR "ARC: jump_label: ERROR: " + +/* Halt system on fatal error to make debug easier */ +#define arc_jl_fatal(format...) \ +({ \ + pr_err(JUMPLABEL_ERR format); \ + BUG(); \ +}) + +static inline u32 arc_gen_nop(void) +{ + /* 1x 32bit NOP in middle endian */ + return 0x7000264a; +} + +/* + * Atomic update of patched instruction is only available if this + * instruction doesn't cross L1 cache line boundary. You can read about + * the way we achieve this in arc/include/asm/jump_label.h + */ +static inline void instruction_align_assert(void *addr, int len) +{ + unsigned long a = (unsigned long)addr; + + if ((a >> L1_CACHE_SHIFT) != ((a + len - 1) >> L1_CACHE_SHIFT)) + arc_jl_fatal("instruction (addr %px) cross L1 cache line border", + addr); +} + +/* + * ARCv2 'Branch unconditionally' instruction: + * 00000ssssssssss1SSSSSSSSSSNRtttt + * s S[n:0] lower bits signed immediate (number is bitfield size) + * S S[m:n+1] upper bits signed immediate (number is bitfield size) + * t S[24:21] upper bits signed immediate (branch unconditionally far) + * N N <.d> delay slot mode + * R R Reserved + */ +static inline u32 arc_gen_branch(jump_label_t pc, jump_label_t target) +{ + u32 instruction_l, instruction_r; + u32 pcl = pc & GENMASK(31, 2); + u32 u_offset = target - pcl; + u32 s, S, t; + + /* + * Offset in 32-bit branch instruction must to fit into s25. + * Something is terribly broken if we get such huge offset within one + * function. + */ + if ((s32)u_offset < -16777216 || (s32)u_offset > 16777214) + arc_jl_fatal("gen branch with offset (%d) not fit in s25", + (s32)u_offset); + + /* + * All instructions are aligned by 2 bytes so we should never get offset + * here which is not 2 bytes aligned. + */ + if (u_offset & 0x1) + arc_jl_fatal("gen branch with offset (%d) unaligned to 2 bytes", + (s32)u_offset); + + s = (u_offset >> 1) & GENMASK(9, 0); + S = (u_offset >> 11) & GENMASK(9, 0); + t = (u_offset >> 21) & GENMASK(3, 0); + + /* 00000ssssssssss1 */ + instruction_l = (s << 1) | 0x1; + /* SSSSSSSSSSNRtttt */ + instruction_r = (S << 6) | t; + + return (instruction_r << 16) | (instruction_l & GENMASK(15, 0)); +} + +void arch_jump_label_transform(struct jump_entry *entry, + enum jump_label_type type) +{ + jump_label_t *instr_addr = (jump_label_t *)entry->code; + u32 instr; + + instruction_align_assert(instr_addr, JUMP_LABEL_NOP_SIZE); + + if (type == JUMP_LABEL_JMP) + instr = arc_gen_branch(entry->code, entry->target); + else + instr = arc_gen_nop(); + + WRITE_ONCE(*instr_addr, instr); + flush_icache_range(entry->code, entry->code + JUMP_LABEL_NOP_SIZE); +} + +void arch_jump_label_transform_static(struct jump_entry *entry, + enum jump_label_type type) +{ + /* + * We use only one NOP type (1x, 4 byte) in arch_static_branch, so + * there's no need to patch an identical NOP over the top of it here. + * The generic code calls 'arch_jump_label_transform' if the NOP needs + * to be replaced by a branch, so 'arch_jump_label_transform_static' is + * never called with type other than JUMP_LABEL_NOP. + */ + BUG_ON(type != JUMP_LABEL_NOP); +} + +#ifdef CONFIG_ARC_DBG_JUMP_LABEL +#define SELFTEST_MSG "ARC: instruction generation self-test: " + +struct arc_gen_branch_testdata { + jump_label_t pc; + jump_label_t target_address; + u32 expected_instr; +}; + +static __init int branch_gen_test(const struct arc_gen_branch_testdata *test) +{ + u32 instr_got; + + instr_got = arc_gen_branch(test->pc, test->target_address); + if (instr_got == test->expected_instr) + return 0; + + pr_err(SELFTEST_MSG "FAIL:\n arc_gen_branch(0x%08x, 0x%08x) != 0x%08x, got 0x%08x\n", + test->pc, test->target_address, + test->expected_instr, instr_got); + + return -EFAULT; +} + +/* + * Offset field in branch instruction is not continuous. Test all + * available offset field and sign combinations. Test data is generated + * from real working code. + */ +static const struct arc_gen_branch_testdata arcgenbr_test_data[] __initconst = { + {0x90007548, 0x90007514, 0xffcf07cd}, /* tiny (-52) offs */ + {0x9000c9c0, 0x9000c782, 0xffcf05c3}, /* tiny (-574) offs */ + {0x9000cc1c, 0x9000c782, 0xffcf0367}, /* tiny (-1178) offs */ + {0x9009dce0, 0x9009d106, 0xff8f0427}, /* small (-3034) offs */ + {0x9000f5de, 0x90007d30, 0xfc0f0755}, /* big (-30892) offs */ + {0x900a2444, 0x90035f64, 0xc9cf0321}, /* huge (-443616) offs */ + {0x90007514, 0x9000752c, 0x00000019}, /* tiny (+24) offs */ + {0x9001a578, 0x9001a77a, 0x00000203}, /* tiny (+514) offs */ + {0x90031ed8, 0x90032634, 0x0000075d}, /* tiny (+1884) offs */ + {0x9008c7f2, 0x9008d3f0, 0x00400401}, /* small (+3072) offs */ + {0x9000bb38, 0x9003b340, 0x17c00009}, /* big (+194568) offs */ + {0x90008f44, 0x90578d80, 0xb7c2063d} /* huge (+5701180) offs */ +}; + +static __init int instr_gen_test(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(arcgenbr_test_data); i++) + if (branch_gen_test(&arcgenbr_test_data[i])) + return -EFAULT; + + pr_info(SELFTEST_MSG "OK\n"); + + return 0; +} +early_initcall(instr_gen_test); + +#endif /* CONFIG_ARC_DBG_JUMP_LABEL */ diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c index 18b493dfb3a8..abf9398cc333 100644 --- a/arch/arc/kernel/mcip.c +++ b/arch/arc/kernel/mcip.c @@ -202,8 +202,8 @@ static void idu_set_dest(unsigned int cmn_irq, unsigned int cpu_mask) __mcip_cmd_data(CMD_IDU_SET_DEST, cmn_irq, cpu_mask); } -static void idu_set_mode(unsigned int cmn_irq, unsigned int lvl, - unsigned int distr) +static void idu_set_mode(unsigned int cmn_irq, bool set_lvl, unsigned int lvl, + bool set_distr, unsigned int distr) { union { unsigned int word; @@ -212,8 +212,11 @@ static void idu_set_mode(unsigned int cmn_irq, unsigned int lvl, }; } data; - data.distr = distr; - data.lvl = lvl; + data.word = __mcip_cmd_read(CMD_IDU_READ_MODE, cmn_irq); + if (set_distr) + data.distr = distr; + if (set_lvl) + data.lvl = lvl; __mcip_cmd_data(CMD_IDU_SET_MODE, cmn_irq, data.word); } @@ -240,6 +243,25 @@ static void idu_irq_unmask(struct irq_data *data) raw_spin_unlock_irqrestore(&mcip_lock, flags); } +static void idu_irq_ack(struct irq_data *data) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&mcip_lock, flags); + __mcip_cmd(CMD_IDU_ACK_CIRQ, data->hwirq); + raw_spin_unlock_irqrestore(&mcip_lock, flags); +} + +static void idu_irq_mask_ack(struct irq_data *data) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&mcip_lock, flags); + __mcip_cmd_data(CMD_IDU_SET_MASK, data->hwirq, 1); + __mcip_cmd(CMD_IDU_ACK_CIRQ, data->hwirq); + raw_spin_unlock_irqrestore(&mcip_lock, flags); +} + static int idu_irq_set_affinity(struct irq_data *data, const struct cpumask *cpumask, bool force) @@ -263,13 +285,36 @@ idu_irq_set_affinity(struct irq_data *data, const struct cpumask *cpumask, else distribution_mode = IDU_M_DISTRI_RR; - idu_set_mode(data->hwirq, IDU_M_TRIG_LEVEL, distribution_mode); + idu_set_mode(data->hwirq, false, 0, true, distribution_mode); raw_spin_unlock_irqrestore(&mcip_lock, flags); return IRQ_SET_MASK_OK; } +static int idu_irq_set_type(struct irq_data *data, u32 type) +{ + unsigned long flags; + + /* + * ARCv2 IDU HW does not support inverse polarity, so these are the + * only interrupt types supported. + */ + if (type & ~(IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_HIGH)) + return -EINVAL; + + raw_spin_lock_irqsave(&mcip_lock, flags); + + idu_set_mode(data->hwirq, true, + type & IRQ_TYPE_EDGE_RISING ? IDU_M_TRIG_EDGE : + IDU_M_TRIG_LEVEL, + false, 0); + + raw_spin_unlock_irqrestore(&mcip_lock, flags); + + return 0; +} + static void idu_irq_enable(struct irq_data *data) { /* @@ -289,7 +334,10 @@ static struct irq_chip idu_irq_chip = { .name = "MCIP IDU Intc", .irq_mask = idu_irq_mask, .irq_unmask = idu_irq_unmask, + .irq_ack = idu_irq_ack, + .irq_mask_ack = idu_irq_mask_ack, .irq_enable = idu_irq_enable, + .irq_set_type = idu_irq_set_type, #ifdef CONFIG_SMP .irq_set_affinity = idu_irq_set_affinity, #endif @@ -317,7 +365,7 @@ static int idu_irq_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t } static const struct irq_domain_ops idu_irq_ops = { - .xlate = irq_domain_xlate_onecell, + .xlate = irq_domain_xlate_onetwocell, .map = idu_irq_map, }; diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index 861a8aea51f9..661fd842ea97 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -614,8 +614,8 @@ static int arc_pmu_device_probe(struct platform_device *pdev) /* loop thru all available h/w condition indexes */ for (i = 0; i < cc_bcr.c; i++) { write_aux_reg(ARC_REG_CC_INDEX, i); - cc_name.indiv.word0 = read_aux_reg(ARC_REG_CC_NAME0); - cc_name.indiv.word1 = read_aux_reg(ARC_REG_CC_NAME1); + cc_name.indiv.word0 = le32_to_cpu(read_aux_reg(ARC_REG_CC_NAME0)); + cc_name.indiv.word1 = le32_to_cpu(read_aux_reg(ARC_REG_CC_NAME1)); arc_pmu_map_hw_event(i, cc_name.str); arc_pmu_add_raw_event_attr(i, cc_name.str); diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index e1889ce3faf9..315528f04bc1 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -20,6 +20,8 @@ #include <linux/elf.h> #include <linux/tick.h> +#include <asm/fpu.h> + SYSCALL_DEFINE1(arc_settls, void *, user_tls_data_ptr) { task_thread_info(current)->thr_ptr = (unsigned int)user_tls_data_ptr; @@ -171,9 +173,8 @@ asmlinkage void ret_from_fork(void); * | user_r25 | * ------------------ <===== END of PAGE */ -int copy_thread(unsigned long clone_flags, - unsigned long usp, unsigned long kthread_arg, - struct task_struct *p) +int copy_thread_tls(unsigned long clone_flags, unsigned long usp, + unsigned long kthread_arg, struct task_struct *p, unsigned long tls) { struct pt_regs *c_regs; /* child's pt_regs */ unsigned long *childksp; /* to unwind out of __switch_to() */ @@ -231,7 +232,7 @@ int copy_thread(unsigned long clone_flags, * set task's userland tls data ptr from 4th arg * clone C-lib call is difft from clone sys-call */ - task_thread_info(p)->thr_ptr = regs->r3; + task_thread_info(p)->thr_ptr = tls; } else { /* Normal fork case: set parent's TLS ptr in child */ task_thread_info(p)->thr_ptr = @@ -264,7 +265,7 @@ int copy_thread(unsigned long clone_flags, /* * Do necessary setup to start up a new user task */ -void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp) +void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp) { regs->sp = usp; regs->ret = pc; @@ -280,6 +281,8 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp) regs->eflags = 0; #endif + fpu_init_task(regs); + /* bogus seed values for debugging */ regs->lp_start = 0x10; regs->lp_end = 0x80; diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 7ee89dc61f6e..e1c647490f00 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -572,10 +572,6 @@ void __init setup_arch(char **cmdline_p) */ root_mountflags &= ~MS_RDONLY; -#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) - conswitchp = &dummy_con; -#endif - arc_unwind_init(); } diff --git a/arch/arc/kernel/sys.c b/arch/arc/kernel/sys.c index fddecc76efb7..1069446bdc58 100644 --- a/arch/arc/kernel/sys.c +++ b/arch/arc/kernel/sys.c @@ -7,6 +7,7 @@ #include <asm/syscalls.h> #define sys_clone sys_clone_wrapper +#define sys_clone3 sys_clone3_wrapper #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c index c2663fce7f6c..27ea64b1fa33 100644 --- a/arch/arc/kernel/unwind.c +++ b/arch/arc/kernel/unwind.c @@ -42,10 +42,10 @@ do { \ #define EXTRA_INFO(f) { \ BUILD_BUG_ON_ZERO(offsetof(struct unwind_frame_info, f) \ - % FIELD_SIZEOF(struct unwind_frame_info, f)) \ + % sizeof_field(struct unwind_frame_info, f)) \ + offsetof(struct unwind_frame_info, f) \ - / FIELD_SIZEOF(struct unwind_frame_info, f), \ - FIELD_SIZEOF(struct unwind_frame_info, f) \ + / sizeof_field(struct unwind_frame_info, f), \ + sizeof_field(struct unwind_frame_info, f) \ } #define PTREGS_INFO(f) EXTRA_INFO(regs.f) @@ -572,6 +572,7 @@ static unsigned long read_pointer(const u8 **pLoc, const void *end, #else BUILD_BUG_ON(sizeof(u32) != sizeof(value)); #endif + /* Fall through */ case DW_EH_PE_native: if (end < (const void *)(ptr.pul + 1)) return 0; @@ -826,7 +827,7 @@ static int processCFI(const u8 *start, const u8 *end, unsigned long targetLoc, case DW_CFA_def_cfa: state->cfa.reg = get_uleb128(&ptr.p8, end); unw_debug("cfa_def_cfa: r%lu ", state->cfa.reg); - /*nobreak*/ + /* fall through */ case DW_CFA_def_cfa_offset: state->cfa.offs = get_uleb128(&ptr.p8, end); unw_debug("cfa_def_cfa_offset: 0x%lx ", @@ -834,7 +835,7 @@ static int processCFI(const u8 *start, const u8 *end, unsigned long targetLoc, break; case DW_CFA_def_cfa_sf: state->cfa.reg = get_uleb128(&ptr.p8, end); - /*nobreak */ + /* fall through */ case DW_CFA_def_cfa_offset_sf: state->cfa.offs = get_sleb128(&ptr.p8, end) * state->dataAlign; diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S index 6c693a9d29b6..54139a6f469b 100644 --- a/arch/arc/kernel/vmlinux.lds.S +++ b/arch/arc/kernel/vmlinux.lds.S @@ -95,13 +95,13 @@ SECTIONS _etext = .; _sdata = .; - RO_DATA_SECTION(PAGE_SIZE) + RO_DATA(PAGE_SIZE) /* * 1. this is .data essentially * 2. THREAD_SIZE for init.task, must be kernel-stk sz aligned */ - RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) + RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) _edata = .; @@ -118,8 +118,6 @@ SECTIONS /DISCARD/ : { *(.eh_frame) } #endif - NOTES - . = ALIGN(PAGE_SIZE); _end = . ; diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c index 62c210e7ee4c..e947572a521e 100644 --- a/arch/arc/mm/dma.c +++ b/arch/arc/mm/dma.c @@ -48,8 +48,8 @@ void arch_dma_prep_coherent(struct page *page, size_t size) * upper layer functions (in include/linux/dma-mapping.h) */ -void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr, - size_t size, enum dma_data_direction dir) +void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) { switch (dir) { case DMA_TO_DEVICE: @@ -69,8 +69,8 @@ void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr, } } -void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr, - size_t size, enum dma_data_direction dir) +void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) { switch (dir) { case DMA_TO_DEVICE: @@ -101,12 +101,6 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, if (is_isa_arcv2() && ioc_enable && coherent) dev->dma_coherent = true; - dev_info(dev, "use %sncoherent DMA ops\n", + dev_info(dev, "use %scoherent DMA ops\n", dev->dma_coherent ? "" : "non"); } - -static int __init atomic_pool_init(void) -{ - return dma_atomic_pool_init(GFP_KERNEL, pgprot_noncached(PAGE_KERNEL)); -} -postcore_initcall(atomic_pool_init); diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index 3861543b66a0..fb86bc3e9b35 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -30,6 +30,7 @@ noinline static int handle_kernel_vaddr_fault(unsigned long address) * with the 'reference' page table. */ pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; @@ -39,8 +40,13 @@ noinline static int handle_kernel_vaddr_fault(unsigned long address) if (!pgd_present(*pgd_k)) goto bad_area; - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto bad_area; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto bad_area; diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c index a4856bfaedf3..fc8849e4f72e 100644 --- a/arch/arc/mm/highmem.c +++ b/arch/arc/mm/highmem.c @@ -111,12 +111,14 @@ EXPORT_SYMBOL(__kunmap_atomic); static noinline pte_t * __init alloc_kmap_pgtable(unsigned long kvaddr) { pgd_t *pgd_k; + p4d_t *p4d_k; pud_t *pud_k; pmd_t *pmd_k; pte_t *pte_k; pgd_k = pgd_offset_k(kvaddr); - pud_k = pud_offset(pgd_k, kvaddr); + p4d_k = p4d_offset(pgd_k, kvaddr); + pud_k = pud_offset(p4d_k, kvaddr); pmd_k = pmd_offset(pud_k, kvaddr); pte_k = (pte_t *)memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c index 10025e199353..c340acd989a0 100644 --- a/arch/arc/mm/tlb.c +++ b/arch/arc/mm/tlb.c @@ -118,6 +118,33 @@ static inline void __tlb_entry_erase(void) write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite); } +static void utlb_invalidate(void) +{ +#if (CONFIG_ARC_MMU_VER >= 2) + +#if (CONFIG_ARC_MMU_VER == 2) + /* MMU v2 introduced the uTLB Flush command. + * There was however an obscure hardware bug, where uTLB flush would + * fail when a prior probe for J-TLB (both totally unrelated) would + * return lkup err - because the entry didn't exist in MMU. + * The Workround was to set Index reg with some valid value, prior to + * flush. This was fixed in MMU v3 + */ + unsigned int idx; + + /* make sure INDEX Reg is valid */ + idx = read_aux_reg(ARC_REG_TLBINDEX); + + /* If not write some dummy val */ + if (unlikely(idx & TLB_LKUP_ERR)) + write_aux_reg(ARC_REG_TLBINDEX, 0xa); +#endif + + write_aux_reg(ARC_REG_TLBCOMMAND, TLBIVUTLB); +#endif + +} + #if (CONFIG_ARC_MMU_VER < 4) static inline unsigned int tlb_entry_lkup(unsigned long vaddr_n_asid) @@ -149,44 +176,6 @@ static void tlb_entry_erase(unsigned int vaddr_n_asid) } } -/**************************************************************************** - * ARC700 MMU caches recently used J-TLB entries (RAM) as uTLBs (FLOPs) - * - * New IVUTLB cmd in MMU v2 explictly invalidates the uTLB - * - * utlb_invalidate ( ) - * -For v2 MMU calls Flush uTLB Cmd - * -For v1 MMU does nothing (except for Metal Fix v1 MMU) - * This is because in v1 TLBWrite itself invalidate uTLBs - ***************************************************************************/ - -static void utlb_invalidate(void) -{ -#if (CONFIG_ARC_MMU_VER >= 2) - -#if (CONFIG_ARC_MMU_VER == 2) - /* MMU v2 introduced the uTLB Flush command. - * There was however an obscure hardware bug, where uTLB flush would - * fail when a prior probe for J-TLB (both totally unrelated) would - * return lkup err - because the entry didn't exist in MMU. - * The Workround was to set Index reg with some valid value, prior to - * flush. This was fixed in MMU v3 hence not needed any more - */ - unsigned int idx; - - /* make sure INDEX Reg is valid */ - idx = read_aux_reg(ARC_REG_TLBINDEX); - - /* If not write some dummy val */ - if (unlikely(idx & TLB_LKUP_ERR)) - write_aux_reg(ARC_REG_TLBINDEX, 0xa); -#endif - - write_aux_reg(ARC_REG_TLBCOMMAND, TLBIVUTLB); -#endif - -} - static void tlb_entry_insert(unsigned int pd0, pte_t pd1) { unsigned int idx; @@ -219,11 +208,6 @@ static void tlb_entry_insert(unsigned int pd0, pte_t pd1) #else /* CONFIG_ARC_MMU_VER >= 4) */ -static void utlb_invalidate(void) -{ - /* No need since uTLB is always in sync with JTLB */ -} - static void tlb_entry_erase(unsigned int vaddr_n_asid) { write_aux_reg(ARC_REG_TLBPD0, vaddr_n_asid | _PAGE_PRESENT); @@ -267,7 +251,7 @@ noinline void local_flush_tlb_all(void) for (entry = 0; entry < num_tlb; entry++) { /* write this entry to the TLB */ write_aux_reg(ARC_REG_TLBINDEX, entry); - write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite); + write_aux_reg(ARC_REG_TLBCOMMAND, TLBWriteNI); } if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) { @@ -278,7 +262,7 @@ noinline void local_flush_tlb_all(void) for (entry = stlb_idx; entry < stlb_idx + 16; entry++) { write_aux_reg(ARC_REG_TLBINDEX, entry); - write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite); + write_aux_reg(ARC_REG_TLBCOMMAND, TLBWriteNI); } } @@ -355,8 +339,6 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, } } - utlb_invalidate(); - local_irq_restore(flags); } @@ -385,8 +367,6 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) start += PAGE_SIZE; } - utlb_invalidate(); - local_irq_restore(flags); } @@ -407,7 +387,6 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) if (asid_mm(vma->vm_mm, cpu) != MM_CTXT_NO_ASID) { tlb_entry_erase((page & PAGE_MASK) | hw_pid(vma->vm_mm, cpu)); - utlb_invalidate(); } local_irq_restore(flags); @@ -868,7 +847,7 @@ void arc_mmu_init(void) write_aux_reg(ARC_REG_PID, MMU_ENABLE); /* In smp we use this reg for interrupt 1 scratch */ -#ifndef CONFIG_SMP +#ifdef ARC_USE_SCRATCH_REG /* swapper_pg_dir is the pgd for the kernel, used by vmalloc */ write_aux_reg(ARC_REG_SCRATCH_DATA0, swapper_pg_dir); #endif diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index c55d95dd2f39..2efaf6ca0c06 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -122,17 +122,27 @@ ex_saved_reg1: #else /* ARCv2 */ .macro TLBMISS_FREEUP_REGS +#ifdef CONFIG_ARC_HAS_LL64 + std r0, [sp, -16] + std r2, [sp, -8] +#else PUSH r0 PUSH r1 PUSH r2 PUSH r3 +#endif .endm .macro TLBMISS_RESTORE_REGS +#ifdef CONFIG_ARC_HAS_LL64 + ldd r0, [sp, -16] + ldd r2, [sp, -8] +#else POP r3 POP r2 POP r1 POP r0 +#endif .endm #endif @@ -193,7 +203,7 @@ ex_saved_reg1: lr r2, [efa] -#ifndef CONFIG_SMP +#ifdef ARC_USE_SCRATCH_REG lr r1, [ARC_REG_SCRATCH_DATA0] ; current pgd #else GET_CURR_TASK_ON_CPU r1 @@ -282,11 +292,7 @@ ex_saved_reg1: sr TLBGetIndex, [ARC_REG_TLBCOMMAND] /* Commit the Write */ -#if (CONFIG_ARC_MMU_VER >= 2) /* introduced in v2 */ sr TLBWriteNI, [ARC_REG_TLBCOMMAND] -#else - sr TLBWrite, [ARC_REG_TLBCOMMAND] -#endif #else sr TLBInsertEntry, [ARC_REG_TLBCOMMAND] @@ -370,9 +376,7 @@ ENTRY(EV_TLBMissD) ;---------------------------------------------------------------- ; UPDATE_PTE: Let Linux VM know that page was accessed/dirty - lr r3, [ecr] or r0, r0, _PAGE_ACCESSED ; Accessed bit always - btst_s r3, ECR_C_BIT_DTLB_ST_MISS ; See if it was a Write Access ? or.nz r0, r0, _PAGE_DIRTY ; if Write, set Dirty bit as well st_s r0, [r1] ; Write back PTE diff --git a/arch/arc/plat-eznps/Kconfig b/arch/arc/plat-eznps/Kconfig index a376a50d3fea..a931d0a256d0 100644 --- a/arch/arc/plat-eznps/Kconfig +++ b/arch/arc/plat-eznps/Kconfig @@ -7,7 +7,7 @@ menuconfig ARC_PLAT_EZNPS bool "\"EZchip\" ARC dev platform" select CPU_BIG_ENDIAN - select CLKSRC_NPS + select CLKSRC_NPS if !PHYS_ADDR_T_64BIT select EZNPS_GIC select EZCHIP_NPS_MANAGEMENT_ENET if ETHERNET help diff --git a/arch/arc/plat-hsdk/platform.c b/arch/arc/plat-hsdk/platform.c index 7dd2dd335cf6..0b961a2a10b8 100644 --- a/arch/arc/plat-hsdk/platform.c +++ b/arch/arc/plat-hsdk/platform.c @@ -6,11 +6,15 @@ */ #include <linux/init.h> +#include <linux/of_fdt.h> +#include <linux/libfdt.h> #include <linux/smp.h> #include <asm/arcregs.h> #include <asm/io.h> #include <asm/mach_desc.h> +int arc_hsdk_axi_dmac_coherent __section(.data) = 0; + #define ARC_CCM_UNUSED_ADDR 0x60000000 static void __init hsdk_init_per_cpu(unsigned int cpu) @@ -97,6 +101,42 @@ static void __init hsdk_enable_gpio_intc_wire(void) iowrite32(GPIO_INT_CONNECTED_MASK, (void __iomem *) GPIO_INTEN); } +static int __init hsdk_tweak_node_coherency(const char *path, bool coherent) +{ + void *fdt = initial_boot_params; + const void *prop; + int node, ret; + bool dt_coh_set; + + node = fdt_path_offset(fdt, path); + if (node < 0) + goto tweak_fail; + + prop = fdt_getprop(fdt, node, "dma-coherent", &ret); + if (!prop && ret != -FDT_ERR_NOTFOUND) + goto tweak_fail; + + dt_coh_set = ret != -FDT_ERR_NOTFOUND; + ret = 0; + + /* need to remove "dma-coherent" property */ + if (dt_coh_set && !coherent) + ret = fdt_delprop(fdt, node, "dma-coherent"); + + /* need to set "dma-coherent" property */ + if (!dt_coh_set && coherent) + ret = fdt_setprop(fdt, node, "dma-coherent", NULL, 0); + + if (ret < 0) + goto tweak_fail; + + return 0; + +tweak_fail: + pr_err("failed to tweak %s to %scoherent\n", path, coherent ? "" : "non"); + return -EFAULT; +} + enum hsdk_axi_masters { M_HS_CORE = 0, M_HS_RTT, @@ -162,6 +202,39 @@ enum hsdk_axi_masters { #define CREG_PAE ((void __iomem *)(CREG_BASE + 0x180)) #define CREG_PAE_UPDT ((void __iomem *)(CREG_BASE + 0x194)) +static void __init hsdk_init_memory_bridge_axi_dmac(void) +{ + bool coherent = !!arc_hsdk_axi_dmac_coherent; + u32 axi_m_slv1, axi_m_oft1; + + /* + * Don't tweak memory bridge configuration if we failed to tweak DTB + * as we will end up in a inconsistent state. + */ + if (hsdk_tweak_node_coherency("/soc/dmac@80000", coherent)) + return; + + if (coherent) { + axi_m_slv1 = 0x77999999; + axi_m_oft1 = 0x76DCBA98; + } else { + axi_m_slv1 = 0x77777777; + axi_m_oft1 = 0x76543210; + } + + writel(0x77777777, CREG_AXI_M_SLV0(M_DMAC_0)); + writel(0xFEDCBA98, CREG_AXI_M_OFT0(M_DMAC_0)); + writel(axi_m_slv1, CREG_AXI_M_SLV1(M_DMAC_0)); + writel(axi_m_oft1, CREG_AXI_M_OFT1(M_DMAC_0)); + writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_DMAC_0)); + + writel(0x77777777, CREG_AXI_M_SLV0(M_DMAC_1)); + writel(0xFEDCBA98, CREG_AXI_M_OFT0(M_DMAC_1)); + writel(axi_m_slv1, CREG_AXI_M_SLV1(M_DMAC_1)); + writel(axi_m_oft1, CREG_AXI_M_OFT1(M_DMAC_1)); + writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_DMAC_1)); +} + static void __init hsdk_init_memory_bridge(void) { u32 reg; @@ -227,24 +300,14 @@ static void __init hsdk_init_memory_bridge(void) writel(0x76543210, CREG_AXI_M_OFT1(M_GPU)); writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_GPU)); - writel(0x77777777, CREG_AXI_M_SLV0(M_DMAC_0)); - writel(0x77777777, CREG_AXI_M_SLV1(M_DMAC_0)); - writel(0xFEDCBA98, CREG_AXI_M_OFT0(M_DMAC_0)); - writel(0x76543210, CREG_AXI_M_OFT1(M_DMAC_0)); - writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_DMAC_0)); - - writel(0x77777777, CREG_AXI_M_SLV0(M_DMAC_1)); - writel(0x77777777, CREG_AXI_M_SLV1(M_DMAC_1)); - writel(0xFEDCBA98, CREG_AXI_M_OFT0(M_DMAC_1)); - writel(0x76543210, CREG_AXI_M_OFT1(M_DMAC_1)); - writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_DMAC_1)); - writel(0x00000000, CREG_AXI_M_SLV0(M_DVFS)); writel(0x60000000, CREG_AXI_M_SLV1(M_DVFS)); writel(0x00000000, CREG_AXI_M_OFT0(M_DVFS)); writel(0x00000000, CREG_AXI_M_OFT1(M_DVFS)); writel(UPDATE_VAL, CREG_AXI_M_UPDT(M_DVFS)); + hsdk_init_memory_bridge_axi_dmac(); + /* * PAE remapping for DMA clients does not work due to an RTL bug, so * CREG_PAE register must be programmed to all zeroes, otherwise it diff --git a/arch/arc/plat-sim/platform.c b/arch/arc/plat-sim/platform.c index 3765dedcd319..2bde2a6e336a 100644 --- a/arch/arc/plat-sim/platform.c +++ b/arch/arc/plat-sim/platform.c @@ -21,7 +21,6 @@ static const char *simulation_compat[] __initconst = { "snps,nsim", "snps,nsimosci", #else - "snps,nsim_hs", "snps,nsimosci_hs", "snps,zebu_hs", #endif |
