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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.
*/
#include <boot/coreboot_tables.h>
#include <boot_device.h>
#include <cbmem.h>
#include <console/cbmem_console.h>
#include <console/console.h>
#include <fmap.h>
#include <reset.h>
#include <rules.h>
#include <stddef.h>
#include <string.h>
#include "chromeos.h"
#include "vboot_common.h"
#include "vboot_handoff.h"
int vboot_named_region_device(const char *name, struct region_device *rdev)
{
return fmap_locate_area_as_rdev(name, rdev);
}
int vboot_region_device(const struct region *reg, struct region_device *rdev)
{
return boot_device_ro_subregion(reg, rdev);
}
int vboot_get_handoff_info(void **addr, uint32_t *size)
{
struct vboot_handoff *vboot_handoff;
/* No flags are available in a separate verstage or bootblock because
* cbmem only comes online when dram does. */
if ((ENV_VERSTAGE && IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) ||
ENV_BOOTBLOCK)
return -1;
vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
if (vboot_handoff == NULL)
return -1;
*addr = vboot_handoff;
*size = sizeof(*vboot_handoff);
return 0;
}
static int vboot_handoff_flag(uint32_t flag)
{
struct vboot_handoff *vbho;
uint32_t size;
if (vboot_get_handoff_info((void **)&vbho, &size))
return 0;
return !!(vbho->init_params.out_flags & flag);
}
int vboot_skip_display_init(void)
{
return !vboot_handoff_flag(VB_INIT_OUT_ENABLE_DISPLAY);
}
int vboot_enable_developer(void)
{
return vboot_handoff_flag(VB_INIT_OUT_ENABLE_DEVELOPER);
}
int vboot_enable_recovery(void)
{
return vboot_handoff_flag(VB_INIT_OUT_ENABLE_RECOVERY);
}
int vboot_recovery_reason(void)
{
struct vboot_handoff *vbho;
VbSharedDataHeader *sd;
vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
if (vbho == NULL)
return 0;
sd = (VbSharedDataHeader *)vbho->shared_data;
return sd->recovery_reason;
}
void __attribute__((weak)) vboot_platform_prepare_reboot(void)
{
}
void vboot_reboot(void)
{
if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART))
cbmem_dump_console();
vboot_platform_prepare_reboot();
hard_reset();
die("failed to reboot");
}
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