config ARCH_BOOTBLOCK_ARMV8_64 bool select ARCH_BOOTBLOCK_ARM64 config ARCH_VERSTAGE_ARMV8_64 bool select ARCH_VERSTAGE_ARM64 config ARCH_ROMSTAGE_ARMV8_64 bool select ARCH_ROMSTAGE_ARM64 config ARCH_RAMSTAGE_ARMV8_64 bool 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.