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##
## This file is part of the coreboot project.
##
## Copyright (C) 2011 Google Inc.
## Copyright (C) 2013-2014 Sage Electronic Engineering, LLC.
##
## 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 HAVE_INTEL_FIRMWARE
bool
help
Chipset uses the Intel Firmware Descriptor to describe the
layout of the SPI ROM chip.
if HAVE_INTEL_FIRMWARE
comment "Intel Firmware"
config HAVE_IFD_BIN
bool "Add Intel descriptor.bin file"
help
The descriptor binary
config IFD_BIN_PATH
string "Path and filename of the descriptor.bin file"
default "3rdparty/blobs/mainboard/$(MAINBOARDDIR)/descriptor.bin"
depends on HAVE_IFD_BIN && !BUILD_WITH_FAKE_IFD
config EM100
bool "Configure IFD for EM100 usage"
depends on HAVE_IFD_BIN && !BUILD_WITH_FAKE_IFD
help
Set SPI frequency to 20MHz and disable Dual Output Fast Read Support
config HAVE_ME_BIN
bool "Add Intel ME/TXE firmware"
depends on HAVE_IFD_BIN
help
The Intel processor in the selected system requires a special firmware
for an integrated controller. This might be called the Management
Engine (ME), the Trusted Execution Engine (TXE) or something else
depending on the chip. This firmware might or might not be available
in coreboot's 3rdparty/blobs repository. If it is not and if you don't
have access to the firmware from elsewhere, you can still build
coreboot without it. In this case however, you'll have to make sure
that you don't overwrite your ME/TXE firmware on your flash ROM.
config ME_BIN_PATH
string "Path to management engine firmware"
default "3rdparty/blobs/mainboard/$(MAINBOARDDIR)/me.bin"
depends on HAVE_ME_BIN
config USE_ME_CLEANER
bool "Strip down the Intel ME/TXE firmware"
depends on HAVE_ME_BIN && (NORTHBRIDGE_INTEL_SANDYBRIDGE || \
NORTHBRIDGE_INTEL_IVYBRIDGE || NORTHBRIDGE_INTEL_HASWELL || \
SOC_INTEL_BROADWELL || SOC_INTEL_SKYLAKE || \
SOC_INTEL_BAYTRAIL || SOC_INTEL_BRASWELL)
help
Use me_cleaner to remove all the non-fundamental code from the Intel
ME/TXE firmware.
The resulting Intel ME/TXE firmware will have only the code
responsible for the very basic hardware initialization, leaving the
ME/TXE subsystem essentially in a disabled state.
Don't flash a modified ME/TXE firmware and a new coreboot image at the
same time, test them in two different steps.
WARNING: this tool isn't based on any official Intel documentation but
only on reverse engineering and trial & error.
See the project's page
https://github.com/corna/me_cleaner
or the wiki
https://github.com/corna/me_cleaner/wiki/How-does-it-work%3F
https://github.com/corna/me_cleaner/wiki/me_cleaner-status
for more info about this tool
If unsure, say N.
comment "Please test the modified ME/TXE firmware and coreboot in two steps"
depends on USE_ME_CLEANER
config HAVE_GBE_BIN
bool "Add gigabit ethernet firmware"
depends on HAVE_IFD_BIN
help
The integrated gigabit ethernet controller needs a firmware file.
Select this if you are going to use the PCH integrated controller
and have the firmware.
config GBE_BIN_PATH
string "Path to gigabit ethernet firmware"
depends on HAVE_GBE_BIN
default "3rdparty/blobs/mainboard/$(MAINBOARDDIR)/gbe.bin"
##### Fake IFD #####
config BUILD_WITH_FAKE_IFD
bool "Build with a fake IFD" if !HAVE_IFD_BIN
help
If you don't have an Intel Firmware Descriptor (descriptor.bin) for your
board, you can select this option and coreboot will build without it.
The resulting coreboot.rom will not contain all parts required
to get coreboot running on your board. You can however write only the
BIOS section to your board's flash ROM and keep the other sections
untouched. Unfortunately the current version of flashrom doesn't
support this yet. But there is a patch pending [1].
WARNING: Never write a complete coreboot.rom to your flash ROM if it
was built with a fake IFD. It just won't work.
[1] http://www.flashrom.org/pipermail/flashrom/2013-June/011083.html
config IFD_BIOS_SECTION
depends on BUILD_WITH_FAKE_IFD
string "BIOS Region Starting:Ending addresses within the ROM"
default ""
help
The BIOS region is typically the size of the CBFS area, and is located
at the end of the ROM space.
For an 8MB ROM with a 3MB CBFS area, this would look like:
0x00500000:0x007fffff
config IFD_ME_SECTION
depends on BUILD_WITH_FAKE_IFD
string "ME/TXE Region Starting:Ending addresses within the ROM"
default ""
help
The ME/TXE region typically starts at around 0x1000 and often fills the
ROM space not used by CBFS.
For an 8MB ROM with a 3MB CBFS area, this might look like:
0x00001000:0x004fffff
config IFD_GBE_SECTION
depends on BUILD_WITH_FAKE_IFD
string "GBE Region Starting:Ending addresses within the ROM"
default ""
help
The Gigabit Ethernet ROM region is used when an Intel NIC is built into
the Southbridge/SOC and the platform uses this device instead of an external
PCIe NIC. It will be located between the ME/TXE and the BIOS region.
Leave this empty if you're unsure.
config IFD_PLATFORM_SECTION
depends on BUILD_WITH_FAKE_IFD
string "Platform Region Starting:Ending addresses within the Rom"
default ""
help
The Platform region is used for platform specific data.
It will be located between the ME/TXE and the BIOS region.
Leave this empty if you're unsure.
config LOCK_MANAGEMENT_ENGINE
bool "Lock ME/TXE section"
depends on HAVE_ME_BIN
default n
help
The Intel Firmware Descriptor supports preventing write accesses
from the host to the ME or TXE section in the firmware
descriptor. If the section is locked, it can only be overwritten
with an external SPI flash programmer. You will want this if you
want to increase security of your ROM image once you are sure
that the ME/TXE firmware is no longer going to change.
If unsure, say N.
config CBFS_SIZE
hex
default 0x100000
help
Reduce CBFS size to give room to the IFD blobs.
endif #INTEL_FIRMWARE
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