## 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. ## config VBOOT_VBNV_OFFSET hex default 0x26 depends on PC80_SYSTEM help CMOS offset for VbNv data. This value must match cmos.layout in the mainboard directory, minus 14 bytes for the RTC. config VBOOT_VBNV_CMOS bool "Vboot non-volatile storage in CMOS." default n help VBNV is stored in CMOS config VBOOT_VBNV_CMOS_BACKUP_TO_FLASH bool "Back up Vboot non-volatile storage from CMOS to flash." default n depends on VBOOT_VBNV_CMOS && BOOT_DEVICE_SUPPORTS_WRITES help Vboot non-volatile storage data will be backed up from CMOS to flash and restored from flash if the CMOS is invalid due to power loss. config VBOOT_VBNV_EC bool "Vboot non-volatile storage in EC." default n help VBNV is stored in EC config VBOOT_VBNV_FLASH def_bool n depends on BOOT_DEVICE_SUPPORTS_WRITES help VBNV is stored in flash storage config VBOOT_STARTS_IN_BOOTBLOCK bool "Vboot starts verifying in bootblock" default n depends on VBOOT help Firmware verification happens during or at the end of bootblock. config VBOOT_STARTS_IN_ROMSTAGE bool "Vboot starts verifying in romstage" default n depends on VBOOT && !VBOOT_STARTS_IN_BOOTBLOCK help Firmware verification happens during or at the end of romstage. config VBOOT_MOCK_SECDATA bool "Mock secdata for firmware verification" default n depends on VBOOT help Enabling VBOOT_MOCK_SECDATA will mock secdata for the firmware verification to avoid access to a secdata storage (typically TPM). All operations for a secdata storage will be successful. This option can be used during development when a TPM is not present or broken. THIS SHOULD NOT BE LEFT ON FOR PRODUCTION DEVICES. config VBOOT_DISABLE_DEV_ON_RECOVERY bool "Disable dev mode on recovery requests" default n depends on VBOOT help When this option is enabled, the Chrome OS device leaves the developer mode as soon as recovery request is detected. This is handy on embedded devices with limited input capabilities. config SEPARATE_VERSTAGE bool "Vboot verification is built into a separate stage" default n depends on VBOOT config RETURN_FROM_VERSTAGE bool "The separate verification stage returns to its caller" default n depends on SEPARATE_VERSTAGE help If this is set, the verstage returns back to the calling stage instead of exiting to the succeeding stage so that the verstage space can be reused by the succeeding stage. This is useful if a RAM space is too small to fit both the verstage and the succeeding stage. config CHIPSET_PROVIDES_VERSTAGE_MAIN_SYMBOL bool "The chipset provides the main() entry point for verstage" default n depends on SEPARATE_VERSTAGE help The chipset code provides their own main() entry point. config VBOOT_DYNAMIC_WORK_BUFFER bool "Vboot's work buffer is dynamically allocated." default y if ARCH_ROMSTAGE_X86_32 && !SEPARATE_VERSTAGE default n depends on VBOOT help This option is used when there isn't enough pre-main memory RAM to allocate the vboot work buffer. That means vboot verification is after memory init and requires main memory to back the work buffer. config VBOOT_SAVE_RECOVERY_REASON_ON_REBOOT bool default n depends on VBOOT help This option ensures that the recovery request is not lost because of reboots caused after vboot verification is run. e.g. reboots caused by FSP components on Intel platforms. config VBOOT_OPROM_MATTERS bool "Video option ROM matters (= can skip display init)" default n depends on VBOOT help Set this option to indicate to vboot that this platform will skip its display initialization on a normal (non-recovery, non-developer) boot. Vboot calls this "oprom matters" because on x86 devices this traditionally meant that the video option ROM will not be loaded, but it works functionally the same for other platforms that can skip their native display initialization code instead. config VBOOT_HAS_REC_HASH_SPACE bool default n depends on VBOOT help Set this option to indicate to vboot that recovery data hash space is present in TPM. config VBOOT bool "Verify firmware with vboot." default n select TPM if !MAINBOARD_HAS_TPM2 select TPM2 if MAINBOARD_HAS_TPM2 select TPM_INIT_FAILURE_IS_FATAL if PC80_SYSTEM && LPC_TPM select SKIP_TPM_STARTUP_ON_NORMAL_BOOT if PC80_SYSTEM && LPC_TPM depends on HAVE_HARD_RESET help Enabling VBOOT will use vboot to verify the components of the firmware (stages, payload, etc).