if ARM64 config ARMV8_SPL_EXCEPTION_VECTORS bool "Install crash dump exception vectors" depends on SPL help The default exception vector table is only used for the crash dump, but still takes quite a lot of space in the image size. Say N here if you are running out of code space in the image and want to save some space at the cost of less debugging info. config ARMV8_MULTIENTRY bool "Enable multiple CPUs to enter into U-Boot" config ARMV8_SET_SMPEN bool "Enable data coherency with other cores in cluster" help Say Y here if there is not any trust firmware to set CPUECTLR_EL1.SMPEN bit before U-Boot. For A53, it enables data coherency with other cores in the cluster, and for A57/A72, it enables receiving of instruction cache and TLB maintenance operations. Cortex A53/57/72 cores require CPUECTLR_EL1.SMPEN set even for single core systems. Unfortunately write access to this register may be controlled by EL3/EL2 firmware. To be more precise, by default (if there is EL2/EL3 firmware running) this register is RO for NS EL1. This switch can be used to avoid writing to CPUECTLR_EL1, it can be safely enabled when EL2/EL3 initialized SMPEN bit or when CPU implementation doesn't include that register. config ARMV8_SWITCH_TO_EL1 bool "Enable switching to running in EL1" help In some circumstances we need to switch to running in EL1. Enable this option to have U-Boot switch to EL1. config ARMV8_SPIN_TABLE bool "Support spin-table enable method" depends on ARMV8_MULTIENTRY && OF_LIBFDT help Say Y here to support "spin-table" enable method for booting Linux. To use this feature, you must do: - Specify enable-method = "spin-table" in each CPU node in the Device Tree you are using to boot the kernel - Bring secondary CPUs into U-Boot proper in a board specific manner. This must be done *after* relocation. Otherwise, the secondary CPUs will spin in unprotected memory area because the master CPU protects the relocated spin code. U-Boot automatically does: - Set "cpu-release-addr" property of each CPU node (overwrites it if already exists). - Reserve the code for the spin-table and the release address via a /memreserve/ region in the Device Tree. menu "ARMv8 secure monitor firmware" config ARMV8_SEC_FIRMWARE_SUPPORT bool "Enable ARMv8 secure monitor firmware framework support" select FIT select OF_LIBFDT help This framework is aimed at making secure monitor firmware load process brief. Note: Only FIT format image is supported. You should prepare and provide the below information: - Address of secure firmware. - Address to hold the return address from secure firmware. - Secure firmware FIT image related information. Such as: SEC_FIRMWARE_FIT_IMAGE and SEC_FIRMWARE_FIT_CNF_NAME - The target exception level that secure monitor firmware will return to. config SPL_ARMV8_SEC_FIRMWARE_SUPPORT bool "Enable ARMv8 secure monitor firmware framework support for SPL" select SPL_FIT select SPL_OF_LIBFDT help Say Y here to support this framework in SPL phase. config SPL_RECOVER_DATA_SECTION bool "save/restore SPL data section" help Say Y here to save SPL data section for cold boot, and restore at warm boot in SPL phase. config SEC_FIRMWARE_ARMV8_PSCI bool "PSCI implementation in secure monitor firmware" depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT depends on ARMV8_PSCI=n help This config enables the ARMv8 PSCI implementation in secure monitor firmware. This is a private PSCI implementation and different from those implemented under the common ARMv8 PSCI framework. config ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT bool "ARMv8 secure monitor firmware ERET address byteorder swap" depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT help Say Y here when the endianness of the register or memory holding the Secure firmware exception return address is different with core's. endmenu config PSCI_RESET bool "Use PSCI for reset and shutdown" default y select ARM_SMCCC if OF_CONTROL depends on !ARCH_APPLE && !ARCH_BCM283X && !ARCH_EXYNOS7 && \ !TARGET_LS2080AQDS && \ !TARGET_LS2080ARDB && !TARGET_LS2080A_EMU && \ !TARGET_LS1088ARDB && !TARGET_LS1088AQDS && \ !TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \ !TARGET_LS1012A2G5RDB && !TARGET_LS1012AQDS && \ !TARGET_LS1012AFRWY && \ !TARGET_LS1028ARDB && !TARGET_LS1028AQDS && \ !TARGET_LS1043ARDB && !TARGET_LS1043AQDS && \ !TARGET_LS1046ARDB && !TARGET_LS1046AQDS && \ !TARGET_LS1046AFRWY && \ !TARGET_LS2081ARDB && !TARGET_LX2160ARDB && \ !TARGET_LX2160AQDS && !TARGET_LX2162AQDS && \ !ARCH_UNIPHIER help Most armv8 systems have PSCI support enabled in EL3, either through ARM Trusted Firmware or other firmware. On these systems, we do not need to implement system reset manually, but can instead rely on higher level firmware to deal with it. Select Y here to make use of PSCI calls for system reset config SYS_HAS_ARMV8_SECURE_BASE bool config ARMV8_PSCI bool "Enable PSCI support" if EXPERT help PSCI is Power State Coordination Interface defined by ARM. The PSCI in U-boot provides a general framework and each platform can implement their own specific PSCI functions. Say Y here to enable PSCI support on ARMv8 platform. config ARMV8_PSCI_NR_CPUS int "Maximum supported CPUs for PSCI" depends on ARMV8_PSCI default 4 help The maximum number of CPUs supported in the PSCI firmware. It is no problem to set a larger value than the number of CPUs in the actual hardware implementation. config ARMV8_PSCI_CPUS_PER_CLUSTER int "Number of CPUs per cluster" depends on ARMV8_PSCI default 0 help The number of CPUs per cluster, suppose each cluster has same number of CPU cores, platforms with asymmetric clusters don't apply here. A value 0 or no definition of it works for single cluster system. System with multi-cluster should difine their own exact value. config ARMV8_PSCI_RELOCATE bool "Relocate PSCI code" depends on ARMV8_PSCI depends on SYS_HAS_ARMV8_SECURE_BASE help Relocate PSCI code, for example to a secure memory on the SoC. If not set, the PSCI sections are placed together with the u-boot and the regions will be marked as reserved before linux is started. config ARMV8_SECURE_BASE hex "Secure address for PSCI image" depends on ARMV8_PSCI_RELOCATE default 0x18000000 if ARCH_LS1028A help Address for placing the PSCI text, data and stack sections. config ARMV8_EA_EL3_FIRST bool "External aborts and SError interrupt exception are taken in EL3" help Exception handling at all exception levels for External Abort and SError interrupt exception are taken in EL3. menuconfig ARMV8_CRYPTO bool "ARM64 Accelerated Cryptographic Algorithms" if ARMV8_CRYPTO config ARMV8_CE_SHA1 bool "SHA-1 digest algorithm (ARMv8 Crypto Extensions)" default y if SHA1 config ARMV8_CE_SHA256 bool "SHA-256 digest algorithm (ARMv8 Crypto Extensions)" default y if SHA256 endif endif