## SPDX-License-Identifier: GPL-2.0-only

config ARCH_ARM64
	bool
	select CLANG_UNSUPPORTED

config ARCH_BOOTBLOCK_ARM64
	bool
	select ARCH_ARM64

config ARCH_VERSTAGE_ARM64
	bool
	select ARCH_ARM64

config ARCH_ROMSTAGE_ARM64
	bool
	select ARCH_ARM64

config ARCH_RAMSTAGE_ARM64
	bool
	select ARCH_ARM64

source "src/arch/arm64/armv8/Kconfig"

if ARCH_ARM64

config ARM64_CURRENT_EL
	int
	default 3
	range 1 3
	help
	  The exception level on which coreboot is started. Accepted
	  values are: 1 (EL1), 2 (EL2) and 3 (EL3). This option can be
	  used to restrict access to available control registers in case
	  prior firmware already dropped to a lower exception level. By default,
	  coreboot is the first firmware that runs on the system and should thus
	  always run on EL3. This option is only provided for edge-case platforms
	  that require running a different firmware before coreboot which drops
	  to a lower exception level.

config ARM64_USE_ARCH_TIMER
	bool
	default n

config ARM64_USE_ARM_TRUSTED_FIRMWARE
	bool
	default n
	depends on ARCH_RAMSTAGE_ARM64 && ARM64_CURRENT_EL = 3

config ARM64_BL31_OPTEE_WITH_SMC
	bool "Build OP-TEE dispatcher for BL31 and allow loading via an SMC"
	default n
	depends on ARM64_USE_ARM_TRUSTED_FIRMWARE
	help
	  This option adds support for building the OP-TEE Secure Payload Dispatcher
	  (SPD) for BL31, and allows loading the OP-TEE image via a Secure Monitor Call
	  (SMC).

config ARM64_BL31_EXTERNAL_FILE
	string "Path to external BL31.ELF (leave empty to build from source)"
	depends on ARM64_USE_ARM_TRUSTED_FIRMWARE
	help
	  The blob to use instead of building the Arm Trusted Firmware
	  from tree. It is discouraged as compatibility with out-of-tree
	  blobs may break anytime.

config ARM64_USE_SECURE_OS
	bool
	default n
	depends on ARM64_USE_ARM_TRUSTED_FIRMWARE

config ARM64_SECURE_OS_FILE
	string "Secure OS binary file"
	depends on ARM64_USE_SECURE_OS
	help
	  Secure OS binary file.

config ARM64_A53_ERRATUM_843419
	bool
	default n
	help
	  Some early Cortex-A53 revisions had a hardware bug that results in
	  incorrect address calculations in rare cases. This option enables a
	  linker workaround to avoid those cases if your toolchain supports it.
	  Should be selected automatically by SoCs that are affected.

endif # if ARCH_ARM64