| ## SPDX-License-Identifier: GPL-2.0-only |
| |
| config ARCH_ARM64 |
| bool |
| |
| 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_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 |