a384c2899d
Add support for loading secure os and pass its entrypoint as bl32 params to bl31 stage. BUG=chrome-os-partner:40713 BRANCH=None TEST=Compiles successfully and loads secure os Change-Id: I1409ccb7344c1d1b1ddc2b321fdae1beea2f823d Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d3dc19025ff11c1e0590306230df7654ef9ad086 Original-Change-Id: Iafd540bf2906d10b5ee009e96179121fecbf5e11 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/273719 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/10693 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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#include <arch/cache.h>
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#include <arch/lib_helpers.h>
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#include <arch/transition.h>
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#include <arm_tf.h>
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#include <assert.h>
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#include <cbfs.h>
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#include <cbmem.h>
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#include <program_loading.h>
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/*
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* TODO: Many of these structures are currently unused. Better not fill them out
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* to make future changes fail fast, rather than try to come up with content
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* that might turn out to not make sense. Implement later as required.
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*
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static image_info_t bl31_image_info;
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static image_info_t bl32_image_info;
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static image_info_t bl33_image_info;
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*/
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static entry_point_info_t bl32_ep_info;
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static entry_point_info_t bl33_ep_info;
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static bl31_params_t bl31_params;
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void __attribute__((weak)) *soc_get_bl31_plat_params(bl31_params_t *params)
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{
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/* Default weak implementation. */
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return NULL;
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}
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void arm_tf_run_bl31(u64 payload_entry, u64 payload_arg0, u64 payload_spsr)
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{
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struct prog bl31 = PROG_INIT(ASSET_BL31, CONFIG_CBFS_PREFIX"/bl31");
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void (*bl31_entry)(bl31_params_t *params, void *plat_params) = NULL;
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if (prog_locate(&bl31))
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die("BL31 not found");
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if (cbfs_prog_stage_load(&bl31))
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die("BL31 load failed");
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bl31_entry = prog_entry(&bl31);
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SET_PARAM_HEAD(&bl31_params, PARAM_BL31, VERSION_1, 0);
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if (IS_ENABLED(CONFIG_ARM64_USE_SECURE_OS)) {
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struct prog bl32 = PROG_INIT(ASSET_BL32, CONFIG_CBFS_PREFIX"/secure_os");
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if (prog_locate(&bl32))
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die("BL31 not found");
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if (cbfs_prog_stage_load(&bl32))
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die("BL31 load failed");
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SET_PARAM_HEAD(&bl32_ep_info, PARAM_EP, VERSION_1, PARAM_EP_SECURE);
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bl32_ep_info.pc = (uintptr_t)prog_entry(&bl32);
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bl32_ep_info.spsr = SPSR_EXCEPTION_MASK | get_eret_el(EL1, SPSR_USE_L);
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bl31_params.bl32_ep_info = &bl32_ep_info;
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}
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bl31_params.bl33_ep_info = &bl33_ep_info;
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SET_PARAM_HEAD(&bl33_ep_info, PARAM_EP, VERSION_1, PARAM_EP_NON_SECURE);
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bl33_ep_info.pc = payload_entry;
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bl33_ep_info.spsr = payload_spsr;
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bl33_ep_info.args.arg0 = payload_arg0;
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/* May update bl31_params if necessary. Must flush all added structs. */
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void *bl31_plat_params = soc_get_bl31_plat_params(&bl31_params);
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dcache_clean_by_mva(&bl31_params, sizeof(bl31_params));
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dcache_clean_by_mva(&bl33_ep_info, sizeof(bl33_ep_info));
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dcache_mmu_disable();
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bl31_entry(&bl31_params, bl31_plat_params);
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die("BL31 returned!");
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}
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