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## This file is part of the coreboot project.
##
##
## 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 MAINBOARD_HAS_CHROMEOS
def_bool n
menu "ChromeOS"
depends on MAINBOARD_HAS_CHROMEOS
config CHROMEOS
bool "Build for ChromeOS"
default n
select ELOG if BOOT_DEVICE_SUPPORTS_WRITES
select COLLECT_TIMESTAMPS
select VBOOT
select VPD
select VBOOT_SLOTS_RW_AB
help
Enable ChromeOS specific features like the GPIO sub table in
the coreboot table. NOTE: Enabling this option on an unsupported
board will most likely break your build.
if CHROMEOS
config CR50_IMMEDIATELY_COMMIT_FW_SECDATA
bool
default y if TPM_CR50
config CHROMEOS_RAMOOPS
bool "Reserve space for Chrome OS ramoops"
default y
config CHROMEOS_RAMOOPS_DYNAMIC
bool "Allocate RAM oops buffer in cbmem"
default n
depends on CHROMEOS_RAMOOPS && HAVE_ACPI_TABLES
config CHROMEOS_RAMOOPS_NON_ACPI
bool "Allocate RAM oops buffer in cbmem passed through cb tables to payload"
default y if !HAVE_ACPI_TABLES
depends on CHROMEOS_RAMOOPS && !HAVE_ACPI_TABLES
config CHROMEOS_RAMOOPS_RAM_START
hex "Physical address of preserved RAM"
default 0x00f00000
depends on CHROMEOS_RAMOOPS && !CHROMEOS_RAMOOPS_DYNAMIC
config CHROMEOS_RAMOOPS_RAM_SIZE
hex "Size of preserved RAM"
default 0x00100000
depends on CHROMEOS_RAMOOPS
config NO_TPM_RESUME
bool
default n
help
On some boards the TPM stays powered up in S3. On those
boards, booting Windows will break if the TPM resume command
is sent during an S3 resume.
config HAVE_REGULATORY_DOMAIN
bool "Add regulatory domain methods"
default n
help
This option is needed to add ACPI regulatory domain methods
config CHROMEOS_DISABLE_PLATFORM_HIERARCHY_ON_RESUME
bool
default y
depends on TPM2 && RESUME_PATH_SAME_AS_BOOT
help
Disable the platform heirarchy on resume path if the firmware
is involved in resume. The hierarchy is disabled prior to jumping
to the OS. Note that this option is sepcific to TPM2 boards.
This option is auto selected if CHROMEOS because it matches with
vboot_reference model which disables the platform hierarchy in
the boot loader. However, those operations need to be symmetric
on normal boot as well as resume and coreboot is only involved
in the resume piece w.r.t. the platform hierarchy.
config CHROMEOS_USE_EC_WATCHDOG_FLAG
bool
default n
help
Use the AP watchdog flag stored in EC.
config CHROMEOS_DSM_CALIB
bool
default n
help
On some boards, there are calibrated parameters for Dynamic Speaker Management(DSM)
stored in VPD. Enable this config to read and parse these VPD values and write them
to ACPI DSD table in device driver. These parameters will be applied by kernel driver
through device property at boot.
endif # CHROMEOS
endmenu
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