49d30668b6
This function is required to be implemented by SoC only if some platform specific parameters are to be passed in from the early bootloader to bl31 component. BUG=chrome-os-partner:40414 BRANCH=None TEST=Compiles successfully. Change-Id: I6e76a0b6735267971e12aa72a987e8d83f5ad102 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 6ab8bc12ffc2ee5bf69cef68bae852dcbf7ccb98 Original-Change-Id: If55aaee8d18a8045a5d842145c0e2c97a37a8bca Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/272377 Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/10308 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com>
104 lines
3.3 KiB
C
104 lines
3.3 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 <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 <vendorcode/google/chromeos/vboot_handoff.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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static entry_point_info_t bl32_ep_info;
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*/
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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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/* TODO: Replace with glorious new CBFSv1 solution when it's available. */
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static void *vboot_get_bl31(void)
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{
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void *bl31_entry;
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struct cbfs_media *media;
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struct firmware_component *component;
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struct vboot_handoff *handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
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if (!handoff)
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return NULL;
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assert(CONFIG_VBOOT_BL31_INDEX < MAX_PARSED_FW_COMPONENTS);
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component = &handoff->components[CONFIG_VBOOT_BL31_INDEX];
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/* components[] is zeroed out before filling, so size == 0 -> missing */
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if (!component->size)
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return NULL;
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init_default_cbfs_media(media);
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bl31_entry = cbfs_load_stage_by_offset(media, component->address);
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if (bl31_entry == CBFS_LOAD_ERROR)
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return NULL;
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printk(BIOS_INFO, "Loaded %u bytes verified BL31 from %#.8x to EP %p\n",
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component->size, component->address, bl31_entry);
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return bl31_entry;
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}
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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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const char *bl31_filename = CONFIG_CBFS_PREFIX"/bl31";
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void (*bl31_entry)(bl31_params_t *params, void *plat_params) = NULL;
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if (IS_ENABLED(CONFIG_VBOOT2_VERIFY_FIRMWARE))
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bl31_entry = vboot_get_bl31();
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if (!bl31_entry) {
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bl31_entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, bl31_filename);
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if (bl31_entry == CBFS_LOAD_ERROR)
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die("BL31 not found in CBFS");
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}
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SET_PARAM_HEAD(&bl31_params, PARAM_BL31, VERSION_1, 0);
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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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