diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/arm64/Kconfig | 64 | ||||
| -rw-r--r-- | arch/arm64/Kconfig.debug | 15 |
2 files changed, 77 insertions, 2 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 839f48c26ef0..fd4e81a4e1ce 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,7 +1,7 @@ config ARM64 def_bool y select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE - select ARCH_HAS_OPP + select ARCH_HAS_SG_CHAIN select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_USE_CMPXCHG_LOCKREF select ARCH_SUPPORTS_ATOMIC_RMW @@ -11,6 +11,8 @@ config ARM64 select ARM_AMBA select ARM_ARCH_TIMER select ARM_GIC + select AUDIT_ARCH_COMPAT_GENERIC + select ARM_GIC_V3 select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select COMMON_CLK @@ -29,10 +31,12 @@ config ARM64 select GENERIC_STRNLEN_USER select GENERIC_TIME_VSYSCALL select HARDIRQS_SW_RESEND + select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_KGDB select HAVE_ARCH_TRACEHOOK select HAVE_C_RECORDMCOUNT + select HAVE_CC_STACKPROTECTOR select HAVE_DEBUG_BUGVERBOSE select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG @@ -63,6 +67,7 @@ config ARM64 select RTC_LIB select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE + select HAVE_CONTEXT_TRACKING help ARM 64-bit (AArch64) Linux support. @@ -155,14 +160,63 @@ endmenu menu "Kernel Features" +choice + prompt "Page size" + default ARM64_4K_PAGES + help + Page size (translation granule) configuration. + +config ARM64_4K_PAGES + bool "4KB" + help + This feature enables 4KB pages support. + config ARM64_64K_PAGES - bool "Enable 64KB pages support" + bool "64KB" help This feature enables 64KB pages support (4KB by default) allowing only two levels of page tables and faster TLB look-up. AArch32 emulation is not available when this feature is enabled. +endchoice + +choice + prompt "Virtual address space size" + default ARM64_VA_BITS_39 if ARM64_4K_PAGES + default ARM64_VA_BITS_42 if ARM64_64K_PAGES + help + Allows choosing one of multiple possible virtual address + space sizes. The level of translation table is determined by + a combination of page size and virtual address space size. + +config ARM64_VA_BITS_39 + bool "39-bit" + depends on ARM64_4K_PAGES + +config ARM64_VA_BITS_42 + bool "42-bit" + depends on ARM64_64K_PAGES + +config ARM64_VA_BITS_48 + bool "48-bit" + depends on BROKEN + +endchoice + +config ARM64_VA_BITS + int + default 39 if ARM64_VA_BITS_39 + default 42 if ARM64_VA_BITS_42 + default 48 if ARM64_VA_BITS_48 + +config ARM64_PGTABLE_LEVELS + int + default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 + default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 + default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 + default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 + config CPU_BIG_ENDIAN bool "Build big-endian kernel" help @@ -294,12 +348,18 @@ config CMDLINE_FORCE This is useful if you cannot or don't want to change the command-line options your boot loader passes to the kernel. +config EFI_STUB + bool + config EFI bool "UEFI runtime support" depends on OF && !CPU_BIG_ENDIAN select LIBFDT select UCS2_STRING select EFI_PARAMS_FROM_FDT + select EFI_RUNTIME_WRAPPERS + select EFI_STUB + select EFI_ARMSTUB default y help This option provides support for runtime services provided diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 1c1b75629842..4ee8e90b7a45 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -28,4 +28,19 @@ config PID_IN_CONTEXTIDR instructions during context switch. Say Y here only if you are planning to use hardware trace tools with this kernel. +config ARM64_RANDOMIZE_TEXT_OFFSET + bool "Randomize TEXT_OFFSET at build time" + help + Say Y here if you want the image load offset (AKA TEXT_OFFSET) + of the kernel to be randomized at build-time. When selected, + this option will cause TEXT_OFFSET to be randomized upon any + build of the kernel, and the offset will be reflected in the + text_offset field of the resulting Image. This can be used to + fuzz-test bootloaders which respect text_offset. + + This option is intended for bootloader and/or kernel testing + only. Bootloaders must make no assumptions regarding the value + of TEXT_OFFSET and platforms must not require a specific + value. + endmenu |