diff options
Diffstat (limited to 'src/arch/arm64/armv8')
| -rw-r--r-- | src/arch/arm64/armv8/Kconfig | 12 | ||||
| -rw-r--r-- | src/arch/arm64/armv8/Makefile.inc | 8 |
2 files changed, 19 insertions, 1 deletions
diff --git a/src/arch/arm64/armv8/Kconfig b/src/arch/arm64/armv8/Kconfig index 02a8dba93b..2070bea197 100644 --- a/src/arch/arm64/armv8/Kconfig +++ b/src/arch/arm64/armv8/Kconfig @@ -13,3 +13,15 @@ config ARCH_ROMSTAGE_ARMV8_64 config ARCH_RAMSTAGE_ARMV8_64 def_bool n select ARCH_RAMSTAGE_ARM64 + +config ARCH_ARMV8_EXTENSION + int + default 0 + help + Specify ARMv8 extension, for example '1' for ARMv8.1, to control the + '-march' option passed into the compiler. Defaults to 0 for vanilla + ARMv8 but may be overridden in the SoC's Kconfig. + + All ARMv8 implementations are downwards-compatible, so this does not + need to be changed unless specific features (e.g. new instructions) + are used by the SoC's coreboot code. diff --git a/src/arch/arm64/armv8/Makefile.inc b/src/arch/arm64/armv8/Makefile.inc index 21ebf70bfb..14a784bb92 100644 --- a/src/arch/arm64/armv8/Makefile.inc +++ b/src/arch/arm64/armv8/Makefile.inc @@ -17,7 +17,13 @@ subdirs-y += lib/ -armv8_flags = -march=armv8-a -I$(src)/arch/arm64/include/armv8/ -D__COREBOOT_ARM_ARCH__=8 +ifeq ($(CONFIG_ARCH_ARMV8_EXTENSION),0) +march = armv8-a +else +march = armv8.$(CONFIG_ARCH_ARMV8_EXTENSION)-a +endif + +armv8_flags = -march=$(march) -I$(src)/arch/arm64/include/armv8/ -D__COREBOOT_ARM_ARCH__=8 ################################################################################ ## bootblock |