1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2016 NXP Semiconductor, Inc. 4 */ 5 6 #include <common.h> 7 #include <asm/cache.h> 8 #include <asm/psci.h> 9 #include <asm/system.h> 10 #include <asm/armv8/sec_firmware.h> 11 12 #if CONFIG_IS_ENABLED(ARMV8_SEC_FIRMWARE_SUPPORT) psci_update_dt(void * fdt)13int psci_update_dt(void *fdt) 14 { 15 /* 16 * If the PSCI in SEC Firmware didn't work, avoid to update the 17 * device node of PSCI. But still return 0 instead of an error 18 * number to support detecting PSCI dynamically and then switching 19 * the SMP boot method between PSCI and spin-table. 20 */ 21 if (sec_firmware_support_psci_version() == PSCI_INVALID_VER) 22 return 0; 23 fdt_psci(fdt); 24 25 #if defined(CONFIG_ARMV8_PSCI) && !defined(CONFIG_ARMV8_SECURE_BASE) 26 /* secure code lives in RAM, keep it alive */ 27 fdt_add_mem_rsv(fdt, (unsigned long)__secure_start, 28 __secure_end - __secure_start); 29 #endif 30 31 return 0; 32 } 33 #endif 34