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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.
*/
#include <boot/coreboot_tables.h>
#include <boot_device.h>
#include <cbmem.h>
#include <console/cbmem_console.h>
#include <console/console.h>
#include <reset.h>
#include <stddef.h>
#include <string.h>
#include "chromeos.h"
#include "fmap.h"
#include "vboot_common.h"
#include "vboot_handoff.h"
void vboot_locate_region(const char *name, struct region *region)
{
const struct fmap_area *area;
region->size = 0;
area = find_fmap_area(fmap_find(), name);
if (area != NULL) {
region->offset = area->offset;
region->size = area->size;
}
}
void *vboot_get_region(size_t offset, size_t size, void *dest)
{
const struct region_device *boot_dev;
struct region_device rdev;
boot_device_init();
boot_dev = boot_device_ro();
if (boot_dev == NULL)
return NULL;
if (rdev_chain(&rdev, boot_dev, offset, size))
return NULL;
/* Each call will leak a mapping. */
if (dest == NULL)
return rdev_mmap_full(&rdev);
if (rdev_readat(&rdev, dest, 0, size) != size)
return NULL;
return dest;
}
int vboot_get_handoff_info(void **addr, uint32_t *size)
{
struct vboot_handoff *vboot_handoff;
vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
if (vboot_handoff == NULL)
return -1;
*addr = vboot_handoff;
*size = sizeof(*vboot_handoff);
return 0;
}
/* This will leak a mapping of a fw region */
struct vboot_components *vboot_locate_components(struct region *region)
{
size_t req_size;
struct vboot_components *vbc;
req_size = sizeof(*vbc);
req_size += sizeof(struct vboot_component_entry) *
MAX_PARSED_FW_COMPONENTS;
vbc = vboot_get_region(region_offset(region), req_size, NULL);
if (vbc && vbc->num_components > MAX_PARSED_FW_COMPONENTS)
vbc = NULL;
return vbc;
}
void vboot_reboot(void)
{
if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART))
cbmem_dump_console();
hard_reset();
die("failed to reboot");
}
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