| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 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 <stddef.h> |
| #include "chromeos.h" |
| #if CONFIG_VBOOT_VERIFY_FIRMWARE |
| #include "vboot_handoff.h" |
| #endif |
| #include <boot/coreboot_tables.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| |
| #if CONFIG_VBOOT_VERIFY_FIRMWARE |
| static int vboot_enable_developer(void) |
| { |
| struct vboot_handoff *vbho; |
| |
| vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF); |
| |
| if (vbho == NULL) { |
| printk(BIOS_ERR, "%s: Couldn't find vboot_handoff structure!\n", |
| __func__); |
| return 0; |
| } |
| |
| return !!(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_DEVELOPER); |
| } |
| |
| static int vboot_enable_recovery(void) |
| { |
| struct vboot_handoff *vbho; |
| |
| vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF); |
| |
| if (vbho == NULL) |
| return 0; |
| |
| return !!(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_RECOVERY); |
| } |
| #else |
| static inline int vboot_enable_developer(void) { return 0; } |
| static inline int vboot_enable_recovery(void) { return 0; } |
| #endif |
| |
| int developer_mode_enabled(void) |
| { |
| return get_developer_mode_switch() || vboot_enable_developer(); |
| } |
| |
| int recovery_mode_enabled(void) |
| { |
| /* |
| * This is called in multiple places and has to detect |
| * recovery mode triggered from the EC and via shared |
| * recovery reason set with crossystem. |
| * |
| * If shared recovery reason is set: |
| * - before VbInit then get_recovery_mode_from_vbnv() is true |
| * - after VbInit then vboot_enable_recovery() is true |
| * |
| * Otherwise the mainboard handler for get_recovery_mode_switch() |
| * will detect recovery mode initiated by the EC. |
| */ |
| return get_recovery_mode_switch() || get_recovery_mode_from_vbnv() || |
| vboot_enable_recovery(); |
| } |
| |
| #if CONFIG_VBOOT_VERIFY_FIRMWARE |
| void *vboot_get_payload(int *len) |
| { |
| struct vboot_handoff *vboot_handoff; |
| struct firmware_component *fwc; |
| |
| vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF); |
| |
| if (vboot_handoff == NULL) |
| return NULL; |
| |
| if (CONFIG_VBOOT_BOOT_LOADER_INDEX >= MAX_PARSED_FW_COMPONENTS) { |
| printk(BIOS_ERR, "Invalid boot loader index: %d\n", |
| CONFIG_VBOOT_BOOT_LOADER_INDEX); |
| return NULL; |
| } |
| |
| fwc = &vboot_handoff->components[CONFIG_VBOOT_BOOT_LOADER_INDEX]; |
| |
| if (len != NULL) |
| *len = fwc->size; |
| |
| printk(BIOS_DEBUG, "Booting 0x%x byte payload at 0x%08x.\n", |
| fwc->size, fwc->address); |
| |
| return (void *)fwc->address; |
| } |
| |
| 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; |
| } |
| #endif |