1if ARM64 2 3config ARMV8_MULTIENTRY 4 bool "Enable multiple CPUs to enter into U-Boot" 5 6config ARMV8_SPIN_TABLE 7 bool "Support spin-table enable method" 8 depends on ARMV8_MULTIENTRY && OF_LIBFDT 9 help 10 Say Y here to support "spin-table" enable method for booting Linux. 11 12 To use this feature, you must do: 13 - Specify enable-method = "spin-table" in each CPU node in the 14 Device Tree you are using to boot the kernel 15 - Let secondary CPUs in U-Boot (in a board specific manner) 16 before the master CPU jumps to the kernel 17 18 U-Boot automatically does: 19 - Set "cpu-release-addr" property of each CPU node 20 (overwrites it if already exists). 21 - Reserve the code for the spin-table and the release address 22 via a /memreserve/ region in the Device Tree. 23 24config PSCI_RESET 25 bool "Use PSCI for reset and shutdown" 26 default y 27 depends on !ARCH_EXYNOS7 && !ARCH_BCM283X && !TARGET_LS2080A_EMU && \ 28 !TARGET_LS2080A_SIMU && !TARGET_LS2080AQDS && \ 29 !TARGET_LS2080ARDB && !TARGET_LS1012AQDS && \ 30 !TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \ 31 !TARGET_LS1043ARDB && !ARCH_UNIPHIER && !ARCH_SNAPDRAGON && \ 32 !TARGET_S32V234EVB 33 help 34 Most armv8 systems have PSCI support enabled in EL3, either through 35 ARM Trusted Firmware or other firmware. 36 37 On these systems, we do not need to implement system reset manually, 38 but can instead rely on higher level firmware to deal with it. 39 40 Select Y here to make use of PSCI calls for system reset 41 42endif 43