commit | 5c80519466863ae7b8579f1edb90829f7f9ee03d | [log] [tgz] |
---|---|---|
author | Jes Klinke <jbk@google.com> | Wed Oct 14 13:24:32 2020 -0700 |
committer | Patrick Georgi <pgeorgi@google.com> | Mon Oct 19 07:03:37 2020 +0000 |
tree | 27136cf23aa6d1f844b26dbc2a2958cbeebf16f9 | |
parent | d5faa90df50c820ed3b79d4a5e479767efd73287 [diff] |
volteer+vendorcode: Retrieve Cr50 version only via SPI No recent Chromebooks have used I2C for TPM communication, and as a result, a bug has crept in. The ability to extract Cr50 firmware string is only supported via SPI, yet code in mainboard and vendorcode attempt to do so unconditionally. This CL makes it such that the code also compiles for future designs using I2C. (Whether we want to enhance the I2C protocol to be able to provide the version string, and then implement the support is a separate question.) This effort is prompted by the desire to use reworked Volteer EVT devices for validating the new Ti50/Dauntless TPM. Dauntless will primarily be using I2C in upcoming designs. BRANCH=volteer TEST=util/abuild/abuild -t GOOGLE_VOLTEER -c max -x Change-Id: Ida1d732e486b19bdff6d95062a3ac1a7c4b58b45 Signed-off-by: jbk@chromium.org Reviewed-on: https://review.coreboot.org/c/coreboot/+/46436 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Caveh Jalali <caveh@chromium.org>
coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload.
With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required.
coreboot was formerly known as LinuxBIOS.
After the basic initialization of the hardware has been performed, any desired "payload" can be started by coreboot.
See https://www.coreboot.org/Payloads for a list of supported payloads.
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
ANY_TOOLCHAIN
Kconfig option if you're feeling lucky (no support in this case).Optional:
make menuconfig
and make nconfig
)Please consult https://www.coreboot.org/Build_HOWTO for details.
If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU.
Please see https://www.coreboot.org/QEMU for details.
Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:
You can contact us directly on the coreboot mailing list:
https://www.coreboot.org/Mailinglist
The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.
coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.
This makes the resulting coreboot images licensed under the GPL, version 2.