config ARCH_PPC64 bool config ARCH_BOOTBLOCK_PPC64 bool select ARCH_PPC64 select BOOTBLOCK_CUSTOM select C_ENVIRONMENT_BOOTBLOCK config ARCH_VERSTAGE_PPC64 bool select ARCH_PPC64 config ARCH_ROMSTAGE_PPC64 bool select ARCH_PPC64 config ARCH_RAMSTAGE_PPC64 bool select ARCH_PPC64