123b5877cSLinus Walleijif ARM64 223b5877cSLinus Walleij 323b5877cSLinus Walleijconfig ARMV8_MULTIENTRY 4ab65006bSMasahiro Yamada bool "Enable multiple CPUs to enter into U-Boot" 523b5877cSLinus Walleij 66b6024eaSMasahiro Yamadaconfig ARMV8_SPIN_TABLE 76b6024eaSMasahiro Yamada bool "Support spin-table enable method" 86b6024eaSMasahiro Yamada depends on ARMV8_MULTIENTRY && OF_LIBFDT 96b6024eaSMasahiro Yamada help 106b6024eaSMasahiro Yamada Say Y here to support "spin-table" enable method for booting Linux. 116b6024eaSMasahiro Yamada 126b6024eaSMasahiro Yamada To use this feature, you must do: 136b6024eaSMasahiro Yamada - Specify enable-method = "spin-table" in each CPU node in the 146b6024eaSMasahiro Yamada Device Tree you are using to boot the kernel 156b6024eaSMasahiro Yamada - Let secondary CPUs in U-Boot (in a board specific manner) 166b6024eaSMasahiro Yamada before the master CPU jumps to the kernel 176b6024eaSMasahiro Yamada 186b6024eaSMasahiro Yamada U-Boot automatically does: 196b6024eaSMasahiro Yamada - Set "cpu-release-addr" property of each CPU node 206b6024eaSMasahiro Yamada (overwrites it if already exists). 216b6024eaSMasahiro Yamada - Reserve the code for the spin-table and the release address 226b6024eaSMasahiro Yamada via a /memreserve/ region in the Device Tree. 236b6024eaSMasahiro Yamada 248069821fSAlexander Grafconfig PSCI_RESET 258069821fSAlexander Graf bool "Use PSCI for reset and shutdown" 268069821fSAlexander Graf default y 278069821fSAlexander Graf depends on !ARCH_EXYNOS7 && !ARCH_BCM283X && !TARGET_LS2080A_EMU && \ 288069821fSAlexander Graf !TARGET_LS2080A_SIMU && !TARGET_LS2080AQDS && \ 298069821fSAlexander Graf !TARGET_LS2080ARDB && !TARGET_LS1012AQDS && \ 308069821fSAlexander Graf !TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \ 31*441a2306SAlexander Graf !TARGET_LS1043ARDB && !TARGET_LS1043AQDS && \ 32*441a2306SAlexander Graf !TARGET_LS1046ARDB && !TARGET_LS1046AQDS && \ 33*441a2306SAlexander Graf !ARCH_UNIPHIER && !ARCH_SNAPDRAGON && !TARGET_S32V234EVB 348069821fSAlexander Graf help 358069821fSAlexander Graf Most armv8 systems have PSCI support enabled in EL3, either through 368069821fSAlexander Graf ARM Trusted Firmware or other firmware. 378069821fSAlexander Graf 388069821fSAlexander Graf On these systems, we do not need to implement system reset manually, 398069821fSAlexander Graf but can instead rely on higher level firmware to deal with it. 408069821fSAlexander Graf 418069821fSAlexander Graf Select Y here to make use of PSCI calls for system reset 428069821fSAlexander Graf 4323b5877cSLinus Walleijendif 44