diff options
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 218 |
1 files changed, 60 insertions, 158 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7a27550ff3c1..ff61891abe53 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -5,9 +5,13 @@ config ARM 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 @@ -28,15 +32,20 @@ config ARM 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_SANITIZE_ALL + select ARCH_HAS_UBSAN select ARCH_MIGHT_HAVE_PC_PARPORT 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 @@ -49,7 +58,6 @@ config ARM select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS select DMA_DECLARE_COHERENT select DMA_GLOBAL_POOL if !MMU - select DMA_OPS select DMA_NONCOHERENT_MMAP if MMU select EDAC_SUPPORT select EDAC_ATOMIC_SCRUB @@ -59,6 +67,7 @@ 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 @@ -78,6 +87,7 @@ config ARM 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 @@ -92,14 +102,15 @@ config ARM 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_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) @@ -111,9 +122,11 @@ 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 @@ -121,6 +134,7 @@ config ARM 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 @@ -155,15 +169,12 @@ config ARM <http://www.arm.linux.org.uk/>. config ARM_HAS_GROUP_RELOCS - def_bool y - depends on !LD_IS_LLD || LLD_VERSION >= 140000 - depends on !COMPILE_TEST + def_bool !COMPILE_TEST help Whether or not to use R_ARM_ALU_PC_Gn or R_ARM_LDR_PC_Gn group - relocations, which have been around for a long time, but were not - supported in LLD until version 14. The combined range is -/+ 256 MiB, - which is usually sufficient, but not for allyesconfig, so we disable - this feature when doing compile testing. + 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 @@ -250,7 +261,7 @@ 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 MMU help @@ -339,83 +350,7 @@ config ARCH_MULTIPLATFORM Selecting N here allows using those options, including DEBUG_UNCOMPRESS, XIP_KERNEL and ZBOOT_ROM. If unsure, say Y. -menu "Platform selection" - depends on MMU - -comment "CPU Core family selection" - -config ARCH_MULTI_V4 - bool "ARMv4 based platforms (FA526, StrongARM)" - depends on !ARCH_MULTI_V6_V7 - # https://github.com/llvm/llvm-project/issues/50764 - depends on !LD_IS_LLD || LLD_VERSION >= 160000 - select ARCH_MULTI_V4_V5 - select CPU_FA526 if !(CPU_SA110 || CPU_SA1100) - -config ARCH_MULTI_V4T - bool "ARMv4T based platforms (ARM720T, ARM920T, ...)" - depends on !ARCH_MULTI_V6_V7 - # https://github.com/llvm/llvm-project/issues/50764 - depends on !LD_IS_LLD || LLD_VERSION >= 160000 - 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)" - default y - select ARCH_MULTI_V6_V7 - select CPU_V7 - select HAVE_SMP - -config ARCH_MULTI_V6_V7 - bool - select MIGHT_HAVE_CACHE_L2X0 - -config ARCH_MULTI_CPU_AUTO - def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7) - select ARCH_MULTI_V5 - -endmenu - -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 - -config ARCH_AIROHA - bool "Airoha SoC Support" - depends on ARCH_MULTI_V7 - select ARM_AMBA - select ARM_GIC - select ARM_GIC_V3 - select ARM_PSCI - select HAVE_ARM_ARCH_TIMER - help - Support for Airoha EN7523 SoCs +source "arch/arm/Kconfig.platforms" # # This is sorted alphabetically by mach-* pathname. However, plat-* @@ -428,8 +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" @@ -460,8 +393,6 @@ source "arch/arm/mach-highbank/Kconfig" source "arch/arm/mach-hisi/Kconfig" -source "arch/arm/mach-hpe/Kconfig" - source "arch/arm/mach-imx/Kconfig" source "arch/arm/mach-ixp4xx/Kconfig" @@ -478,8 +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" @@ -492,8 +421,6 @@ source "arch/arm/mach-nomadik/Kconfig" source "arch/arm/mach-npcm/Kconfig" -source "arch/arm/mach-nspire/Kconfig" - source "arch/arm/mach-omap1/Kconfig" source "arch/arm/mach-omap2/Kconfig" @@ -504,8 +431,6 @@ source "arch/arm/mach-pxa/Kconfig" source "arch/arm/mach-qcom/Kconfig" -source "arch/arm/mach-rda/Kconfig" - source "arch/arm/mach-realtek/Kconfig" source "arch/arm/mach-rpc/Kconfig" @@ -528,14 +453,10 @@ source "arch/arm/mach-sti/Kconfig" source "arch/arm/mach-stm32/Kconfig" -source "arch/arm/mach-sunplus/Kconfig" - 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" @@ -589,8 +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. @@ -818,7 +739,7 @@ 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 A-9 erratum. + 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 @@ -1018,28 +939,14 @@ config IRQSTACKS 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 @@ -1254,8 +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 @@ -1317,9 +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 @@ -1328,10 +1233,26 @@ 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 CPU_TTBR0_PAN + def_bool y + depends on ARM_PAN && ARM_LPAE + help + Enable privileged no-access by disabling TTBR0 page table walks when + running in kernel mode. + config HW_PERF_EVENTS def_bool y depends on ARM_PMU @@ -1361,7 +1282,7 @@ config ARCH_FORCE_MAX_ORDER default "10" help The kernel page allocator limits the size of maximal physically - contiguous allocations. The limit is called MAX_ORDER and it + 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 @@ -1439,8 +1360,7 @@ config CC_HAVE_STACKPROTECTOR_TLS config STACKPROTECTOR_PER_TASK bool "Use a unique stack canary value for each task" depends on STACKPROTECTOR && CURRENT_POINTER_IN_TPIDRURO && !XIP_DEFLATED_DATA - depends on GCC_PLUGINS || CC_HAVE_STACKPROTECTOR_TLS - select GCC_PLUGIN_ARM_SSP_PER_TASK if !CC_HAVE_STACKPROTECTOR_TLS + depends on CC_HAVE_STACKPROTECTOR_TLS default y help Due to the fact that GCC uses an ordinary symbol reference from @@ -1549,7 +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 @@ -1578,7 +1499,8 @@ 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 config CMDLINE_FROM_BOOTLOADER @@ -1645,20 +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" @@ -1668,17 +1578,11 @@ 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" if !ARCH_MULTIPLATFORM @@ -1830,5 +1734,3 @@ config ARCH_HIBERNATION_POSSIBLE default y if ARCH_SUSPEND_POSSIBLE endmenu - -source "arch/arm/Kconfig.assembler" |