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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 The ChromiumOS Authors. All rights reserved.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <cbfs.h>
#include <console/console.h>
#include <reset.h>
#include "../chromeos.h"
#include "../symbols.h"
#include "../vboot_handoff.h"
#include "misc.h"
void *vboot_load_stage(int stage_index,
struct vboot_region *fw_main,
struct vboot_components *fw_info)
{
struct cbfs_media default_media, *media = &default_media;
uintptr_t fc_addr;
uint32_t fc_size;
void *entry;
if (stage_index >= fw_info->num_components) {
printk(BIOS_INFO, "invalid stage index\n");
return NULL;
}
fc_addr = fw_main->offset_addr + fw_info->entries[stage_index].offset;
fc_size = fw_info->entries[stage_index].size;
if (fc_size == 0 ||
fc_addr + fc_size > fw_main->offset_addr + fw_main->size) {
printk(BIOS_INFO, "invalid stage address or size\n");
return NULL;
}
init_default_cbfs_media(media);
/* we're making cbfs access offset outside of the region managed by
* cbfs. this works because cbfs_load_stage_by_offset does not check
* the offset. */
entry = cbfs_load_stage_by_offset(media, fc_addr);
if (entry == (void *)-1)
entry = NULL;
return entry;
}
struct vb2_working_data * const vboot_get_working_data(void)
{
return (struct vb2_working_data *)_vboot2_work;
}
void *vboot_get_work_buffer(struct vb2_working_data *wd)
{
return (void *)((uintptr_t)wd + wd->buffer_offset);
}
void vboot_reboot(void)
{
hard_reset();
die("failed to reboot");
}
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