/* * This file is part of the coreboot project. * * Copyright 2015 Google Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <arch/cache.h> #include <arch/lib_helpers.h> #include <arch/mmu.h> #include <arch/transition.h> #include <arm_tf.h> #include <assert.h> #include <cbfs.h> #include <cbmem.h> #include <compiler.h> #include <program_loading.h> /* * TODO: Many of these structures are currently unused. Better not fill them out * to make future changes fail fast, rather than try to come up with content * that might turn out to not make sense. Implement later as required. * static image_info_t bl31_image_info; static image_info_t bl32_image_info; static image_info_t bl33_image_info; */ static entry_point_info_t bl32_ep_info; static entry_point_info_t bl33_ep_info; static bl31_params_t bl31_params; void __weak *soc_get_bl31_plat_params(bl31_params_t *params) { /* Default weak implementation. */ return NULL; } void arm_tf_run_bl31(u64 payload_entry, u64 payload_arg0, u64 payload_spsr) { struct prog bl31 = PROG_INIT(PROG_BL31, CONFIG_CBFS_PREFIX"/bl31"); void (*bl31_entry)(bl31_params_t *params, void *plat_params) = NULL; if (prog_locate(&bl31)) die("BL31 not found"); if (!selfload(&bl31, false)) die("BL31 load failed"); bl31_entry = prog_entry(&bl31); SET_PARAM_HEAD(&bl31_params, PARAM_BL31, VERSION_1, 0); if (IS_ENABLED(CONFIG_ARM64_USE_SECURE_OS)) { struct prog bl32 = PROG_INIT(PROG_BL32, CONFIG_CBFS_PREFIX"/secure_os"); if (prog_locate(&bl32)) die("BL32 not found"); if (cbfs_prog_stage_load(&bl32)) die("BL32 load failed"); SET_PARAM_HEAD(&bl32_ep_info, PARAM_EP, VERSION_1, PARAM_EP_SECURE); bl32_ep_info.pc = (uintptr_t)prog_entry(&bl32); bl32_ep_info.spsr = SPSR_EXCEPTION_MASK | get_eret_el(EL1, SPSR_USE_L); bl31_params.bl32_ep_info = &bl32_ep_info; } bl31_params.bl33_ep_info = &bl33_ep_info; SET_PARAM_HEAD(&bl33_ep_info, PARAM_EP, VERSION_1, PARAM_EP_NON_SECURE); bl33_ep_info.pc = payload_entry; bl33_ep_info.spsr = payload_spsr; bl33_ep_info.args.arg0 = payload_arg0; /* May update bl31_params if necessary. */ void *bl31_plat_params = soc_get_bl31_plat_params(&bl31_params); /* MMU disable will flush cache, so passed params land in memory. */ raw_write_daif(SPSR_EXCEPTION_MASK); mmu_disable(); bl31_entry(&bl31_params, bl31_plat_params); die("BL31 returned!"); }