1if ARM64 2 3config ARMV8_MULTIENTRY 4 bool "Enable multiple CPUs to enter into U-Boot" 5 6config ARMV8_SET_SMPEN 7 bool "Enable data coherency with other cores in cluster" 8 help 9 Say Y here if there is not any trust firmware to set 10 CPUECTLR_EL1.SMPEN bit before U-Boot. 11 12 For A53, it enables data coherency with other cores in the 13 cluster, and for A57/A72, it enables receiving of instruction 14 cache and TLB maintenance operations. 15 Cortex A53/57/72 cores require CPUECTLR_EL1.SMPEN set even 16 for single core systems. Unfortunately write access to this 17 register may be controlled by EL3/EL2 firmware. To be more 18 precise, by default (if there is EL2/EL3 firmware running) 19 this register is RO for NS EL1. 20 This switch can be used to avoid writing to CPUECTLR_EL1, 21 it can be safely enabled when EL2/EL3 initialized SMPEN bit 22 or when CPU implementation doesn't include that register. 23 24config ARMV8_SPIN_TABLE 25 bool "Support spin-table enable method" 26 depends on ARMV8_MULTIENTRY && OF_LIBFDT 27 help 28 Say Y here to support "spin-table" enable method for booting Linux. 29 30 To use this feature, you must do: 31 - Specify enable-method = "spin-table" in each CPU node in the 32 Device Tree you are using to boot the kernel 33 - Bring secondary CPUs into U-Boot proper in a board specific 34 manner. This must be done *after* relocation. Otherwise, the 35 secondary CPUs will spin in unprotected memory area because the 36 master CPU protects the relocated spin code. 37 38 U-Boot automatically does: 39 - Set "cpu-release-addr" property of each CPU node 40 (overwrites it if already exists). 41 - Reserve the code for the spin-table and the release address 42 via a /memreserve/ region in the Device Tree. 43 44menu "ARMv8 secure monitor firmware" 45config ARMV8_SEC_FIRMWARE_SUPPORT 46 bool "Enable ARMv8 secure monitor firmware framework support" 47 select OF_LIBFDT 48 select FIT 49 help 50 This framework is aimed at making secure monitor firmware load 51 process brief. 52 Note: Only FIT format image is supported. 53 You should prepare and provide the below information: 54 - Address of secure firmware. 55 - Address to hold the return address from secure firmware. 56 - Secure firmware FIT image related information. 57 Such as: SEC_FIRMWARE_FIT_IMAGE and SEC_FIRMEWARE_FIT_CNF_NAME 58 - The target exception level that secure monitor firmware will 59 return to. 60 61config SPL_ARMV8_SEC_FIRMWARE_SUPPORT 62 bool "Enable ARMv8 secure monitor firmware framework support for SPL" 63 select SPL_OF_LIBFDT 64 select SPL_FIT 65 help 66 Say Y here to support this framework in SPL phase. 67 68config SEC_FIRMWARE_ARMV8_PSCI 69 bool "PSCI implementation in secure monitor firmware" 70 depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT 71 help 72 This config enables the ARMv8 PSCI implementation in secure monitor 73 firmware. This is a private PSCI implementation and different from 74 those implemented under the common ARMv8 PSCI framework. 75 76config ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT 77 bool "ARMv8 secure monitor firmware ERET address byteorder swap" 78 depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT 79 help 80 Say Y here when the endianness of the register or memory holding the 81 Secure firmware exception return address is different with core's. 82 83endmenu 84 85config PSCI_RESET 86 bool "Use PSCI for reset and shutdown" 87 default y 88 depends on !ARCH_EXYNOS7 && !ARCH_BCM283X && !TARGET_LS2080A_EMU && \ 89 !TARGET_LS2080A_SIMU && !TARGET_LS2080AQDS && \ 90 !TARGET_LS2080ARDB && !TARGET_LS1012AQDS && \ 91 !TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \ 92 !TARGET_LS1043ARDB && !TARGET_LS1043AQDS && \ 93 !TARGET_LS1046ARDB && !TARGET_LS1046AQDS && \ 94 !TARGET_LS2081ARDB && \ 95 !ARCH_UNIPHIER && !TARGET_S32V234EVB 96 help 97 Most armv8 systems have PSCI support enabled in EL3, either through 98 ARM Trusted Firmware or other firmware. 99 100 On these systems, we do not need to implement system reset manually, 101 but can instead rely on higher level firmware to deal with it. 102 103 Select Y here to make use of PSCI calls for system reset 104 105config ARMV8_PSCI 106 bool "Enable PSCI support" if EXPERT 107 default n 108 help 109 PSCI is Power State Coordination Interface defined by ARM. 110 The PSCI in U-boot provides a general framework and each platform 111 can implement their own specific PSCI functions. 112 Say Y here to enable PSCI support on ARMv8 platform. 113 114config ARMV8_PSCI_NR_CPUS 115 int "Maximum supported CPUs for PSCI" 116 depends on ARMV8_PSCI 117 default 4 118 help 119 The maximum number of CPUs supported in the PSCI firmware. 120 It is no problem to set a larger value than the number of CPUs in 121 the actual hardware implementation. 122 123config ARMV8_PSCI_CPUS_PER_CLUSTER 124 int "Number of CPUs per cluster" 125 depends on ARMV8_PSCI 126 default 0 127 help 128 The number of CPUs per cluster, suppose each cluster has same number 129 of CPU cores, platforms with asymmetric clusters don't apply here. 130 A value 0 or no definition of it works for single cluster system. 131 System with multi-cluster should difine their own exact value. 132 133if SYS_HAS_ARMV8_SECURE_BASE 134 135config ARMV8_SECURE_BASE 136 hex "Secure address for PSCI image" 137 depends on ARMV8_PSCI 138 help 139 Address for placing the PSCI text, data and stack sections. 140 If not defined, the PSCI sections are placed together with the u-boot 141 but platform can choose to place PSCI code image separately in other 142 places such as some secure RAM built-in SOC etc. 143 144endif 145 146endif 147