if ARM64 config ARMV8_MULTIENTRY bool "Enable multiple CPUs to enter into U-Boot" 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 - Let secondary CPUs in U-Boot (in a board specific manner) before the master CPU jumps to the kernel 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. config PSCI_RESET bool "Use PSCI for reset and shutdown" default y depends on !ARCH_EXYNOS7 && !ARCH_BCM283X && !TARGET_LS2080A_EMU && \ !TARGET_LS2080A_SIMU && !TARGET_LS2080AQDS && \ !TARGET_LS2080ARDB && !TARGET_LS1012AQDS && \ !TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \ !TARGET_LS1043ARDB && !TARGET_LS1043AQDS && \ !TARGET_LS1046ARDB && !TARGET_LS1046AQDS && \ !ARCH_UNIPHIER && !ARCH_SNAPDRAGON && !TARGET_S32V234EVB 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 endif