diff options
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 645 |
1 files changed, 186 insertions, 459 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3ea1c417339f..ff61891abe53 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -3,8 +3,15 @@ config ARM bool default y select ARCH_32BIT_OFF_T + select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE if HAVE_KRETPROBES && FRAME_POINTER && !ARM_UNWIND select ARCH_HAS_BINFMT_FLAT + select ARCH_HAS_CACHE_LINE_SIZE if OF + select ARCH_HAS_CPU_CACHE_ALIASING + select ARCH_HAS_CPU_FINALIZE_INIT if MMU + select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL if MMU + select ARCH_HAS_DMA_ALLOC if MMU + select ARCH_HAS_DMA_OPS select ARCH_HAS_DMA_WRITE_COMBINE if !ARM_DMA_MEM_BUFFERABLE select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE @@ -13,39 +20,45 @@ config ARM select ARCH_HAS_MEMBARRIER_SYNC_CORE select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_SPECIAL if ARM_LPAE - select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_MEMORY + select ARCH_STACKWALK select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL select ARCH_HAS_STRICT_MODULE_RWX if MMU - select ARCH_HAS_SYNC_DMA_FOR_DEVICE if SWIOTLB - select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB + select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_KEEP_MEMBLOCK + select ARCH_HAS_UBSAN select ARCH_MIGHT_HAVE_PC_PARPORT - select ARCH_NO_SG_CHAIN if !ARM_HAS_SG_CHAIN select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 + select ARCH_NEED_CMPXCHG_1_EMU if CPU_V6 select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_CFI select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE + select ARCH_SUPPORTS_PER_VMA_LOCK select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_MEMTEST + # https://github.com/llvm/llvm-project/commit/d130f402642fba3d065aacb506cb061c899558de + select ARCH_USES_CFI_GENERIC_LLVM_PASS if CLANG_VERSION < 220000 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU + select ARCH_WANT_GENERAL_HUGETLB select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_LD_ORPHAN_WARN select BINFMT_FLAT_ARGVP_ENVP_ON_STACK select BUILDTIME_TABLE_SORT if MMU + select COMMON_CLK if !(ARCH_RPC || ARCH_FOOTBRIDGE) select CLONE_BACKWARDS select CPU_PM if SUSPEND || CPU_IDLE select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS select DMA_DECLARE_COHERENT - select DMA_OPS - select DMA_REMAP if MMU + select DMA_GLOBAL_POOL if !MMU + select DMA_NONCOHERENT_MMAP if MMU select EDAC_SUPPORT select EDAC_ATOMIC_SCRUB select GENERIC_ALLOCATOR @@ -54,8 +67,10 @@ config ARM select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_IRQ_IPI if SMP select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_DEVICES select GENERIC_EARLY_IOREMAP select GENERIC_IDLE_POLL_SETUP + select GENERIC_IRQ_MULTI_HANDLER select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL @@ -63,15 +78,16 @@ config ARM select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK select GENERIC_SMP_IDLE_THREAD - select GENERIC_STRNCPY_FROM_USER - select GENERIC_STRNLEN_USER - select HANDLE_DOMAIN_IRQ select HARDIRQS_SW_RESEND + select HAS_IOPORT select HAVE_ARCH_AUDITSYSCALL if AEABI && !OABI_COMPAT select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU + select HAVE_ARCH_KFENCE if MMU && !XIP_KERNEL select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU select HAVE_ARCH_KASAN if MMU && !XIP_KERNEL + select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN + select HAVE_ARCH_KSTACK_ERASE select HAVE_ARCH_MMAP_RND_BITS if MMU select HAVE_ARCH_PFN_VALID select HAVE_ARCH_SECCOMP @@ -81,21 +97,23 @@ config ARM select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARM_LPAE select HAVE_ARM_SMCCC if CPU_V7 select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32 - select HAVE_CONTEXT_TRACKING + select HAVE_CONTEXT_TRACKING_USER select HAVE_C_RECORDMCOUNT + select HAVE_BUILDTIME_MCOUNT_SORT select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL select HAVE_DMA_CONTIGUOUS if MMU + select HAVE_EXTRA_IPI_TRACEPOINTS select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU select HAVE_EXIT_THREAD - select HAVE_FAST_GUP if ARM_LPAE - select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL - select HAVE_FUNCTION_GRAPH_TRACER if !THUMB2_KERNEL && !CC_IS_CLANG + select HAVE_GUP_FAST if ARM_LPAE + select HAVE_FUNCTION_ERROR_INJECTION + select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_FUNCTION_GRAPH_FREGS select HAVE_FUNCTION_TRACER if !XIP_KERNEL select HAVE_GCC_PLUGINS select HAVE_HW_BREAKPOINT if PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7) - select HAVE_IDE if PCI || ISA || PCMCIA select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 @@ -104,30 +122,42 @@ config ARM select HAVE_KERNEL_XZ select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M select HAVE_KRETPROBES if HAVE_KPROBES + select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if (LD_VERSION >= 23600 || LD_IS_LLD) && LD_CAN_USE_KEEP_IN_OVERLAY select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI select HAVE_OPTPROBES if !THUMB2_KERNEL + select HAVE_PAGE_SIZE_4KB + select HAVE_PCI if MMU select HAVE_PERF_EVENTS select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP select MMU_GATHER_RCU_TABLE_FREE if SMP && ARM_LPAE select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RSEQ + select HAVE_RUST if CPU_LITTLE_ENDIAN && CPU_32v7 select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 select HAVE_VIRT_CPU_ACCOUNTING_GEN + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select IRQ_FORCED_THREADING + select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_REL select NEED_DMA_MAP_STATE select OF_EARLY_FLATTREE if OF select OLD_SIGACTION select OLD_SIGSUSPEND3 + select PCI_DOMAINS_GENERIC if PCI select PCI_SYSCALL if PCI select PERF_USE_VMALLOC select RTC_LIB - select SET_FS + select SPARSE_IRQ if !(ARCH_FOOTBRIDGE || ARCH_RPC) select SYS_SUPPORTS_APM_EMULATION + select THREAD_INFO_IN_TASK + select TIMER_OF if OF + select HAVE_ARCH_VMAP_STACK if MMU && ARM_HAS_GROUP_RELOCS + select TRACE_IRQFLAGS_SUPPORT if !CPU_V7M + select USE_OF if !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100) # Above selects are sorted alphabetically; please add new ones # according to that. Thanks. help @@ -138,12 +168,16 @@ config ARM Europe. There is an ARM Linux project with a web page at <http://www.arm.linux.org.uk/>. -config ARM_HAS_SG_CHAIN - bool +config ARM_HAS_GROUP_RELOCS + def_bool !COMPILE_TEST + help + Whether or not to use R_ARM_ALU_PC_Gn or R_ARM_LDR_PC_Gn group + relocations. The combined range is -/+ 256 MiB, which is usually + sufficient, but not for allyesconfig, so we disable this feature + when doing compile testing. config ARM_DMA_USE_IOMMU bool - select ARM_HAS_SG_CHAIN select NEED_SG_DMA_LENGTH if ARM_DMA_USE_IOMMU @@ -191,10 +225,6 @@ config LOCKDEP_SUPPORT bool default y -config TRACE_IRQFLAGS_SUPPORT - bool - default !CPU_V7M - config ARCH_HAS_ILOG2_U32 bool @@ -221,25 +251,19 @@ config ARCH_MAY_HAVE_PC_FDC config ARCH_SUPPORTS_UPROBES def_bool y -config ARCH_HAS_DMA_SET_COHERENT_MASK - bool - config GENERIC_ISA_DMA bool config FIQ bool -config NEED_RET_TO_USER - bool - config ARCH_MTD_XIP bool config ARM_PATCH_PHYS_VIRT - bool "Patch physical to virtual translations at runtime" if EMBEDDED + bool "Patch physical to virtual translations at runtime" if !ARCH_MULTIPLATFORM default y - depends on !XIP_KERNEL && MMU + depends on MMU help Patch phys-to-virt and virt-to-phys translation functions at boot and module load time according to the position of the @@ -268,12 +292,13 @@ config NEED_MACH_MEMORY_H config PHYS_OFFSET hex "Physical address of main memory" if MMU - depends on !ARM_PATCH_PHYS_VIRT + depends on !ARM_PATCH_PHYS_VIRT || !AUTO_ZRELADDR default DRAM_BASE if !MMU default 0x00000000 if ARCH_FOOTBRIDGE default 0x10000000 if ARCH_OMAP1 || ARCH_RPC - default 0x20000000 if ARCH_S5PV210 - default 0xc0000000 if ARCH_SA1100 + default 0xa0000000 if ARCH_PXA + default 0xc0000000 if ARCH_EP93XX || ARCH_SA1100 + default 0 help Please provide the physical address corresponding to the location of main memory in your system. @@ -296,6 +321,12 @@ config MMU Select if you want MMU-based virtualised addressing space support by paged memory management. If unsure, say 'Y'. +config ARM_SINGLE_ARMV7M + def_bool !MMU + select ARM_NVIC + select CPU_V7M + select NO_IOPORT_MAP + config ARCH_MMAP_RND_BITS_MIN default 8 @@ -304,281 +335,22 @@ config ARCH_MMAP_RND_BITS_MAX default 15 if PAGE_OFFSET=0x80000000 default 16 -# -# The "ARM system type" choice list is ordered alphabetically by option -# text. Please add new entries in the option alphabetic order. -# -choice - prompt "ARM system type" - default ARM_SINGLE_ARMV7M if !MMU - default ARCH_MULTIPLATFORM if MMU - config ARCH_MULTIPLATFORM - bool "Allow multiple platforms to be selected" - depends on MMU - select ARCH_FLATMEM_ENABLE - select ARCH_SPARSEMEM_ENABLE - select ARCH_SELECT_MEMORY_MODEL - select ARM_HAS_SG_CHAIN - select ARM_PATCH_PHYS_VIRT - select AUTO_ZRELADDR - select TIMER_OF - select COMMON_CLK - select GENERIC_IRQ_MULTI_HANDLER - select HAVE_PCI - select PCI_DOMAINS_GENERIC if PCI - select SPARSE_IRQ - select USE_OF - -config ARM_SINGLE_ARMV7M - bool "ARMv7-M based platforms (Cortex-M0/M3/M4)" - depends on !MMU - select ARM_NVIC - select AUTO_ZRELADDR - select TIMER_OF - select COMMON_CLK - select CPU_V7M - select NO_IOPORT_MAP - select SPARSE_IRQ - select USE_OF - -config ARCH_EP93XX - bool "EP93xx-based" - select ARCH_SPARSEMEM_ENABLE - select ARM_AMBA - imply ARM_PATCH_PHYS_VIRT - select ARM_VIC - select GENERIC_IRQ_MULTI_HANDLER - select AUTO_ZRELADDR - select CLKSRC_MMIO - select CPU_ARM920T - select GPIOLIB - select HAVE_LEGACY_CLK - help - This enables support for the Cirrus EP93xx series of CPUs. - -config ARCH_FOOTBRIDGE - bool "FootBridge" - select CPU_SA110 - select FOOTBRIDGE - select HAVE_IDE - select NEED_MACH_IO_H if !MMU - select NEED_MACH_MEMORY_H - help - Support for systems based on the DC21285 companion chip - ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. - -config ARCH_IOP32X - bool "IOP32x-based" - depends on MMU - select CPU_XSCALE - select GPIO_IOP - select GPIOLIB - select NEED_RET_TO_USER - select FORCE_PCI - select PLAT_IOP - help - Support for Intel's 80219 and IOP32X (XScale) family of - processors. - -config ARCH_IXP4XX - bool "IXP4xx-based" - depends on MMU - select ARCH_HAS_DMA_SET_COHERENT_MASK - select ARCH_SUPPORTS_BIG_ENDIAN - select CPU_XSCALE - select DMABOUNCE if PCI - select GENERIC_IRQ_MULTI_HANDLER - select GPIO_IXP4XX - select GPIOLIB - select HAVE_PCI - select IXP4XX_IRQ - select IXP4XX_TIMER - # With the new PCI driver this is not needed - select NEED_MACH_IO_H if PCI_IXP4XX_LEGACY - select USB_EHCI_BIG_ENDIAN_DESC - select USB_EHCI_BIG_ENDIAN_MMIO - help - Support for Intel's IXP4XX (XScale) family of processors. - -config ARCH_DOVE - bool "Marvell Dove" - select CPU_PJ4 - select GENERIC_IRQ_MULTI_HANDLER - select GPIOLIB - select HAVE_PCI - select MVEBU_MBUS - select PINCTRL - select PINCTRL_DOVE - select PLAT_ORION_LEGACY - select SPARSE_IRQ - select PM_GENERIC_DOMAINS if PM - help - Support for the Marvell Dove SoC 88AP510 - -config ARCH_PXA - bool "PXA2xx/PXA3xx-based" - depends on MMU - select ARCH_MTD_XIP - select ARM_CPU_SUSPEND if PM - select AUTO_ZRELADDR - select COMMON_CLK - select CLKSRC_PXA - select CLKSRC_MMIO - select TIMER_OF - select CPU_XSCALE if !CPU_XSC3 - select GENERIC_IRQ_MULTI_HANDLER - select GPIO_PXA - select GPIOLIB - select HAVE_IDE - select IRQ_DOMAIN - select PLAT_PXA - select SPARSE_IRQ - help - Support for Intel/Marvell's PXA2xx/PXA3xx processor line. - -config ARCH_RPC - bool "RiscPC" - depends on MMU - select ARCH_ACORN - select ARCH_MAY_HAVE_PC_FDC - select ARCH_SPARSEMEM_ENABLE - select ARM_HAS_SG_CHAIN - select CPU_SA110 - select FIQ - select HAVE_IDE - select HAVE_PATA_PLATFORM - select ISA_DMA_API - select LEGACY_TIMER_TICK - select NEED_MACH_IO_H - select NEED_MACH_MEMORY_H - select NO_IOPORT_MAP - help - On the Acorn Risc-PC, Linux can support the internal IDE disk and - CD-ROM interface, serial and parallel port, and the floppy drive. - -config ARCH_SA1100 - bool "SA1100-based" - select ARCH_MTD_XIP - select ARCH_SPARSEMEM_ENABLE - select CLKSRC_MMIO - select CLKSRC_PXA - select TIMER_OF if OF - select COMMON_CLK - select CPU_FREQ - select CPU_SA1100 - select GENERIC_IRQ_MULTI_HANDLER - select GPIOLIB - select HAVE_IDE - select IRQ_DOMAIN - select ISA - select NEED_MACH_MEMORY_H - select SPARSE_IRQ - help - Support for StrongARM 11x0 based boards. - -config ARCH_S3C24XX - bool "Samsung S3C24XX SoCs" - select ATAGS - select CLKSRC_SAMSUNG_PWM - select GPIO_SAMSUNG - select GPIOLIB - select GENERIC_IRQ_MULTI_HANDLER - select HAVE_S3C2410_I2C if I2C - select HAVE_S3C_RTC if RTC_CLASS - select NEED_MACH_IO_H - select S3C2410_WATCHDOG - select SAMSUNG_ATAGS - select USE_OF - select WATCHDOG - help - Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 - and S3C2450 SoCs based systems, such as the Simtec Electronics BAST - (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the - Samsung SMDK2410 development board (and derivatives). - -config ARCH_OMAP1 - bool "TI OMAP1" - depends on MMU - select ARCH_OMAP - select CLKSRC_MMIO - select GENERIC_IRQ_CHIP - select GENERIC_IRQ_MULTI_HANDLER - select GPIOLIB - select HAVE_IDE - select HAVE_LEGACY_CLK - select IRQ_DOMAIN - select NEED_MACH_IO_H if PCCARD - select NEED_MACH_MEMORY_H - select SPARSE_IRQ - help - Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) - -endchoice - -menu "Multiple platform selection" - depends on ARCH_MULTIPLATFORM - -comment "CPU Core family selection" - -config ARCH_MULTI_V4 - bool "ARMv4 based platforms (FA526)" - depends on !ARCH_MULTI_V6_V7 - select ARCH_MULTI_V4_V5 - select CPU_FA526 - -config ARCH_MULTI_V4T - bool "ARMv4T based platforms (ARM720T, ARM920T, ...)" - depends on !ARCH_MULTI_V6_V7 - select ARCH_MULTI_V4_V5 - select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \ - CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \ - CPU_ARM925T || CPU_ARM940T) - -config ARCH_MULTI_V5 - bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)" - depends on !ARCH_MULTI_V6_V7 - select ARCH_MULTI_V4_V5 - select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \ - CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \ - CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON) - -config ARCH_MULTI_V4_V5 - bool - -config ARCH_MULTI_V6 - bool "ARMv6 based platforms (ARM11)" - select ARCH_MULTI_V6_V7 - select CPU_V6K - -config ARCH_MULTI_V7 - bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)" + bool "Require kernel to be portable to multiple machines" if EXPERT + depends on MMU && !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100) default y - select ARCH_MULTI_V6_V7 - select CPU_V7 - select HAVE_SMP - -config ARCH_MULTI_V6_V7 - bool - select MIGHT_HAVE_CACHE_L2X0 + help + In general, all Arm machines can be supported in a single + kernel image, covering either Armv4/v5 or Armv6/v7. -config ARCH_MULTI_CPU_AUTO - def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7) - select ARCH_MULTI_V5 + However, some configuration options require hardcoding machine + specific physical addresses or enable errata workarounds that may + break other machines. -endmenu + Selecting N here allows using those options, including + DEBUG_UNCOMPRESS, XIP_KERNEL and ZBOOT_ROM. If unsure, say Y. -config ARCH_VIRT - bool "Dummy Virtual Machine" - depends on ARCH_MULTI_V7 - select ARM_AMBA - select ARM_GIC - select ARM_GIC_V2M if PCI - select ARM_GIC_V3 - select ARM_GIC_V3_ITS if PCI - select ARM_PSCI - select HAVE_ARM_ARCH_TIMER - select ARCH_SUPPORTS_BIG_ENDIAN +source "arch/arm/Kconfig.platforms" # # This is sorted alphabetically by mach-* pathname. However, plat-* @@ -591,8 +363,6 @@ source "arch/arm/mach-alpine/Kconfig" source "arch/arm/mach-artpec/Kconfig" -source "arch/arm/mach-asm9260/Kconfig" - source "arch/arm/mach-aspeed/Kconfig" source "arch/arm/mach-at91/Kconfig" @@ -605,8 +375,6 @@ source "arch/arm/mach-berlin/Kconfig" source "arch/arm/mach-clps711x/Kconfig" -source "arch/arm/mach-cns3xxx/Kconfig" - source "arch/arm/mach-davinci/Kconfig" source "arch/arm/mach-digicolor/Kconfig" @@ -627,10 +395,6 @@ source "arch/arm/mach-hisi/Kconfig" source "arch/arm/mach-imx/Kconfig" -source "arch/arm/mach-integrator/Kconfig" - -source "arch/arm/mach-iop32x/Kconfig" - source "arch/arm/mach-ixp4xx/Kconfig" source "arch/arm/mach-keystone/Kconfig" @@ -645,8 +409,6 @@ source "arch/arm/mach-milbeaut/Kconfig" source "arch/arm/mach-mmp/Kconfig" -source "arch/arm/mach-moxart/Kconfig" - source "arch/arm/mach-mstar/Kconfig" source "arch/arm/mach-mv78xx0/Kconfig" @@ -659,28 +421,19 @@ source "arch/arm/mach-nomadik/Kconfig" source "arch/arm/mach-npcm/Kconfig" -source "arch/arm/mach-nspire/Kconfig" - -source "arch/arm/plat-omap/Kconfig" - source "arch/arm/mach-omap1/Kconfig" source "arch/arm/mach-omap2/Kconfig" source "arch/arm/mach-orion5x/Kconfig" -source "arch/arm/mach-oxnas/Kconfig" - source "arch/arm/mach-pxa/Kconfig" -source "arch/arm/plat-pxa/Kconfig" source "arch/arm/mach-qcom/Kconfig" -source "arch/arm/mach-rda/Kconfig" - source "arch/arm/mach-realtek/Kconfig" -source "arch/arm/mach-realview/Kconfig" +source "arch/arm/mach-rpc/Kconfig" source "arch/arm/mach-rockchip/Kconfig" @@ -704,14 +457,10 @@ source "arch/arm/mach-sunxi/Kconfig" source "arch/arm/mach-tegra/Kconfig" -source "arch/arm/mach-uniphier/Kconfig" - source "arch/arm/mach-ux500/Kconfig" source "arch/arm/mach-versatile/Kconfig" -source "arch/arm/mach-vexpress/Kconfig" - source "arch/arm/mach-vt8500/Kconfig" source "arch/arm/mach-zynq/Kconfig" @@ -744,13 +493,9 @@ config ARCH_MPS2 config ARCH_ACORN bool -config PLAT_IOP - bool - config PLAT_ORION bool select CLKSRC_MMIO - select COMMON_CLK select GENERIC_IRQ_CHIP select IRQ_DOMAIN @@ -758,9 +503,6 @@ config PLAT_ORION_LEGACY bool select PLAT_ORION -config PLAT_PXA - bool - config PLAT_VERSATILE bool @@ -768,8 +510,8 @@ source "arch/arm/mm/Kconfig" config IWMMXT bool "Enable iWMMXt support" - depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B - default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B + depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK + default y if PXA27x || PXA3xx || ARCH_MMP help Enable support for iWMMXt context switching at run time if running on a CPU that supports it. @@ -838,7 +580,9 @@ config ARM_ERRATA_458693 hazard might then cause a processor deadlock. The workaround enables the L1 caching of the NEON accesses and disables the PLD instruction in the ACTLR register. Note that setting specific bits in the ACTLR - register may not be available in non-secure mode. + register may not be available in non-secure mode and thus is not + available on a multiplatform kernel. This should be applied by the + bootloader instead. config ARM_ERRATA_460075 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" @@ -851,7 +595,9 @@ config ARM_ERRATA_460075 and overwritten with stale memory contents from external memory. The workaround disables the write-allocate mode for the L2 cache via the ACTLR register. Note that setting specific bits in the ACTLR register - may not be available in non-secure mode. + may not be available in non-secure mode and thus is not available on + a multiplatform kernel. This should be applied by the bootloader + instead. config ARM_ERRATA_742230 bool "ARM errata: DMB operation may be faulty" @@ -864,7 +610,10 @@ config ARM_ERRATA_742230 ordering of the two writes. This workaround sets a specific bit in the diagnostic register of the Cortex-A9 which causes the DMB instruction to behave as a DSB, ensuring the correct behaviour of - the two writes. + the two writes. Note that setting specific bits in the diagnostics + register may not be available in non-secure mode and thus is not + available on a multiplatform kernel. This should be applied by the + bootloader instead. config ARM_ERRATA_742231 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" @@ -879,7 +628,10 @@ config ARM_ERRATA_742231 replaced from one of the CPUs at the same time as another CPU is accessing it. This workaround sets specific bits in the diagnostic register of the Cortex-A9 which reduces the linefill issuing - capabilities of the processor. + capabilities of the processor. Note that setting specific bits in the + diagnostics register may not be available in non-secure mode and thus + is not available on a multiplatform kernel. This should be applied by + the bootloader instead. config ARM_ERRATA_643719 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect" @@ -916,7 +668,9 @@ config ARM_ERRATA_743622 register of the Cortex-A9 which disables the Store Buffer optimisation, preventing the defect from occurring. This has no visible impact on the overall performance or power consumption of the - processor. + processor. Note that setting specific bits in the diagnostics register + may not be available in non-secure mode and thus is not available on a + multiplatform kernel. This should be applied by the bootloader instead. config ARM_ERRATA_751472 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" @@ -928,6 +682,10 @@ config ARM_ERRATA_751472 completion of a following broadcasted operation if the second operation is received by a CPU before the ICIALLUIS has completed, potentially leading to corrupted entries in the cache or TLB. + Note that setting specific bits in the diagnostics register may + not be available in non-secure mode and thus is not available on + a multiplatform kernel. This should be applied by the bootloader + instead. config ARM_ERRATA_754322 bool "ARM errata: possible faulty MMU translations following an ASID switch" @@ -977,6 +735,17 @@ config ARM_ERRATA_764369 relevant cache maintenance functions and sets a specific bit in the diagnostic control register of the SCU. +config ARM_ERRATA_764319 + bool "ARM errata: Read to DBGPRSR and DBGOSLSR may generate Undefined instruction" + depends on CPU_V7 + help + This option enables the workaround for the 764319 Cortex-A9 erratum. + CP14 read accesses to the DBGPRSR and DBGOSLSR registers generate an + unexpected Undefined Instruction exception when the DBGSWENABLE + external pin is set to 0, even when the CP14 accesses are performed + from a privileged mode. This work around catches the exception in a + way the kernel does not stop execution. + config ARM_ERRATA_775420 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock" depends on CPU_V7 @@ -1093,21 +862,10 @@ config ISA (MCA) or VESA. ISA is an older system, now being displaced by PCI; newer boards don't support it. If you have ISA, say Y, otherwise N. -# Select ISA DMA controller support -config ISA_DMA - bool - select ISA_DMA_API - # Select ISA DMA interface config ISA_DMA_API bool -config PCI_NANOENGINE - bool "BSE nanoEngine PCI support" - depends on SA1100_NANOENGINE - help - Enable PCI on the BSE nanoEngine board. - config ARM_ERRATA_814220 bool "ARM errata: Cache maintenance by set/way operations can execute out of order" depends on CPU_V7 @@ -1150,7 +908,7 @@ config SMP uniprocessor machines. On a uniprocessor machine, the kernel will run faster if you say N here. - See also <file:Documentation/x86/i386/IO-APIC.rst>, + See also <file:Documentation/arch/x86/i386/IO-APIC.rst>, <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at <http://tldp.org/HOWTO/SMP-HOWTO.html>. @@ -1158,7 +916,7 @@ config SMP config SMP_ON_UP bool "Allow booting SMP kernel on uniprocessor systems" - depends on SMP && !XIP_KERNEL && MMU + depends on SMP && MMU default y help SMP kernels contain instructions which fail on non-SMP processors. @@ -1168,31 +926,27 @@ config SMP_ON_UP If you don't know what to do here, say Y. + +config CURRENT_POINTER_IN_TPIDRURO + def_bool y + depends on CPU_32v6K && !CPU_V6 + +config IRQSTACKS + def_bool y + select HAVE_IRQ_EXIT_ON_IRQ_STACK + select HAVE_SOFTIRQ_ON_OWN_STACK + config ARM_CPU_TOPOLOGY bool "Support cpu topology definition" depends on SMP && CPU_V7 + select ARCH_SUPPORTS_SCHED_MC + select ARCH_SUPPORTS_SCHED_SMT default y help Support ARM cpu topology definition. The MPIDR register defines affinity between processors which is then used to describe the cpu topology of an ARM System. -config SCHED_MC - bool "Multi-core scheduler support" - depends on ARM_CPU_TOPOLOGY - help - Multi-core scheduler support improves the CPU scheduler's decision - making when dealing with multi-core CPU chips at a cost of slightly - increased overhead in some places. If unsure say N here. - -config SCHED_SMT - bool "SMT scheduler support" - depends on ARM_CPU_TOPOLOGY - help - Improves the CPU scheduler's decision making when dealing with - MultiThreading at a cost of slightly increased overhead in some - places. If unsure say N here. - config HAVE_ARM_SCU bool help @@ -1321,27 +1075,6 @@ config ARM_PSCI 0022A ("Power State Coordination Interface System Software on ARM processors"). -# The GPIO number here must be sorted by descending number. In case of -# a multiplatform kernel, we just want the highest value required by the -# selected platforms. -config ARCH_NR_GPIO - int - default 2048 if ARCH_INTEL_SOCFPGA - default 1024 if ARCH_BRCMSTB || ARCH_RENESAS || ARCH_TEGRA || \ - ARCH_ZYNQ || ARCH_ASPEED - default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \ - SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 - default 416 if ARCH_SUNXI - default 392 if ARCH_U8500 - default 352 if ARCH_VT8500 - default 288 if ARCH_ROCKCHIP - default 264 if MACH_H4700 - default 0 - help - Maximum number of GPIOs in the system. - - If unsure, leave the default value. - config HZ_FIXED int default 128 if SOC_AT91RM9200 @@ -1397,7 +1130,7 @@ config THUMB2_KERNEL config ARM_PATCH_IDIV bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()" - depends on CPU_32v7 && !XIP_KERNEL + depends on CPU_32v7 default y help The ARM compiler inserts calls to __aeabi_idiv() and @@ -1428,8 +1161,6 @@ config AEABI disambiguate both ABIs and allow for backward compatibility support (selected with CONFIG_OABI_COMPAT). - To use this you need GCC version 4.0.0 or later. - config OABI_COMPAT bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" depends on AEABI && !THUMB2_KERNEL @@ -1452,19 +1183,20 @@ config OABI_COMPAT at all). If in doubt say N. config ARCH_SELECT_MEMORY_MODEL - bool + def_bool y config ARCH_FLATMEM_ENABLE - bool + def_bool !(ARCH_RPC || ARCH_SA1100) config ARCH_SPARSEMEM_ENABLE - bool + def_bool !ARCH_FOOTBRIDGE select SPARSEMEM_STATIC if SPARSEMEM config HIGHMEM bool "High Memory Support" depends on MMU select KMAP_LOCAL + select KMAP_LOCAL_NON_LINEAR_PTE_ARRAY help The address space of ARM processors is only 4 Gigabytes large and it has to accommodate user address space, kernel address @@ -1490,9 +1222,9 @@ config HIGHPTE consumed by page tables. Setting this option will allow user-space 2nd level page tables to reside in high memory. -config CPU_SW_DOMAIN_PAN - bool "Enable use of CPU domains to implement privileged no-access" - depends on MMU && !ARM_LPAE +config ARM_PAN + bool "Enable privileged no-access" + depends on MMU default y help Increase kernel security by ensuring that normal kernel accesses @@ -1501,20 +1233,34 @@ config CPU_SW_DOMAIN_PAN by ensuring that magic values (such as LIST_POISON) will always fault when dereferenced. + The implementation uses CPU domains when !CONFIG_ARM_LPAE and + disabling of TTBR0 page table walks with CONFIG_ARM_LPAE. + +config CPU_SW_DOMAIN_PAN + def_bool y + depends on ARM_PAN && !ARM_LPAE + help + Enable use of CPU domains to implement privileged no-access. + CPUs with low-vector mappings use a best-efforts implementation. Their lower 1MB needs to remain accessible for the vectors, but the remainder of userspace will become appropriately inaccessible. -config HW_PERF_EVENTS +config CPU_TTBR0_PAN def_bool y - depends on ARM_PMU + depends on ARM_PAN && ARM_LPAE + help + Enable privileged no-access by disabling TTBR0 page table walks when + running in kernel mode. -config ARCH_WANT_GENERAL_HUGETLB +config HW_PERF_EVENTS def_bool y + depends on ARM_PMU config ARM_MODULE_PLTS bool "Use PLTs to allow module memory to spill over into vmalloc area" depends on MODULES + select KASAN_VMALLOC if KASAN default y help Allocate PLTs when loading modules so that jumps and calls whose @@ -1529,21 +1275,20 @@ config ARM_MODULE_PLTS Disabling this is usually safe for small single-platform configurations. If unsure, say y. -config FORCE_MAX_ZONEORDER - int "Maximum zone order" - default "12" if SOC_AM33XX - default "9" if SA1111 - default "11" +config ARCH_FORCE_MAX_ORDER + int "Order of maximal physically contiguous allocations" + default "11" if SOC_AM33XX + default "8" if SA1111 + default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_PAGE_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. - This config option is actually maximum order plus one. For example, - a value of 11 means that the largest free memory block is 2^10 pages. + Don't change if unsure. config ALIGNMENT_TRAP def_bool CPU_CP15_MMU @@ -1609,10 +1354,13 @@ config XEN help Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. +config CC_HAVE_STACKPROTECTOR_TLS + def_bool $(cc-option,-mtp=cp15 -mstack-protector-guard=tls -mstack-protector-guard-offset=0) + config STACKPROTECTOR_PER_TASK bool "Use a unique stack canary value for each task" - depends on GCC_PLUGINS && STACKPROTECTOR && SMP && !XIP_DEFLATED_DATA - select GCC_PLUGIN_ARM_SSP_PER_TASK + depends on STACKPROTECTOR && CURRENT_POINTER_IN_TPIDRURO && !XIP_DEFLATED_DATA + depends on CC_HAVE_STACKPROTECTOR_TLS default y help Due to the fact that GCC uses an ordinary symbol reference from @@ -1635,15 +1383,17 @@ config USE_OF help Include support for flattened device tree machine descriptions. +config ARCH_WANT_FLAT_DTB_INSTALL + def_bool y + config ATAGS - bool "Support for the traditional ATAGS boot data passing" if USE_OF + bool "Support for the traditional ATAGS boot data passing" default y help This is the traditional way of passing data to the kernel at boot time. If you are solely relying on the flattened device tree (or the ARM_ATAG_DTB_COMPAT option) then you may unselect this option - to remove ATAGS support from your kernel binary. If unsure, - leave this to y. + to remove ATAGS support from your kernel binary. config DEPRECATED_PARAM_STRUCT bool "Provide old way to pass kernel parameters" @@ -1719,7 +1469,8 @@ config ARM_ATAG_DTB_COMPAT from the ATAG list and store it at run time into the appended DTB. choice - prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT + prompt "Kernel command line type" + depends on ARM_ATAG_DTB_COMPAT default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER @@ -1748,9 +1499,9 @@ config CMDLINE memory size and the root device (e.g., mem=64M root=/dev/nfs). choice - prompt "Kernel command line type" if CMDLINE != "" + prompt "Kernel command line type" + depends on CMDLINE != "" default CMDLINE_FROM_BOOTLOADER - depends on ATAGS config CMDLINE_FROM_BOOTLOADER bool "Use bootloader kernel arguments if available" @@ -1777,6 +1528,7 @@ endchoice config XIP_KERNEL bool "Kernel Execute-In-Place from ROM" depends on !ARM_LPAE && !ARCH_MULTIPLATFORM + depends on !ARM_PATCH_IDIV && !ARM_PATCH_PHYS_VIRT && !SMP_ON_UP help Execute-In-Place allows the kernel to run from non-volatile storage directly addressable by the CPU, such as NOR flash. This saves RAM @@ -1815,20 +1567,8 @@ config XIP_DEFLATED_DATA copied, saving some precious ROM space. A possible drawback is a slightly longer boot delay. -config KEXEC - bool "Kexec system call (EXPERIMENTAL)" - depends on (!SMP || PM_SLEEP_SMP) - depends on MMU - select KEXEC_CORE - help - kexec is a system call that implements the ability to shutdown your - current kernel, and to start another kernel. It is like a reboot - but it is independent of the system firmware. And like a reboot - you can start any kernel with it, not just Linux. - - It is an ongoing process to be certain the hardware in a machine - is properly shutdown, so do not be surprised if this code does not - initially work for you. +config ARCH_SUPPORTS_KEXEC + def_bool (!SMP || PM_SLEEP_SMP) && MMU config ATAGS_PROC bool "Export atags in procfs" @@ -1838,20 +1578,15 @@ config ATAGS_PROC Should the atags used to boot the kernel be exported in an "atags" file in procfs. Useful with kexec. -config CRASH_DUMP - bool "Build kdump crash kernel (EXPERIMENTAL)" - help - Generate crash dump after being started by kexec. This should - be normally only set in special crash dump kernels which are - loaded in the main kernel with kexec-tools into a specially - reserved region and then later executed after a crash by - kdump/kexec. The crash dump kernel must be compiled to a - memory address not used by the main kernel +config ARCH_SUPPORTS_CRASH_DUMP + def_bool y - For more details see Documentation/admin-guide/kdump/kdump.rst +config ARCH_DEFAULT_CRASH_DUMP + def_bool y config AUTO_ZRELADDR - bool "Auto calculation of the decompressed kernel image address" + bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM + default !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100) help ZRELADDR is the physical address where the decompressed kernel image will be placed. If AUTO_ZRELADDR is selected, the address @@ -1955,7 +1690,7 @@ config VFP Say Y to include VFP support code in the kernel. This is needed if your hardware includes a VFP unit. - Please see <file:Documentation/arm/vfp/release-notes.rst> for + Please see <file:Documentation/arch/arm/vfp/release-notes.rst> for release notes and additional status information. Say N if your target does not have VFP hardware. @@ -1999,11 +1734,3 @@ config ARCH_HIBERNATION_POSSIBLE default y if ARCH_SUSPEND_POSSIBLE endmenu - -source "drivers/firmware/Kconfig" - -if CRYPTO -source "arch/arm/crypto/Kconfig" -endif - -source "arch/arm/Kconfig.assembler" |