db2e11841a
Until now, the buildOpts.c files were primarily made out of copy-pasted AGESA options, commented-out definitions and several useless comments; that is, the materialization of technical debt in GCC-parsable form... Until now. It is assumed that the boards in the tree still boot. So, by comparing their settings, we can extract saner defaults to place into AGESA. Many of the settings were common across all boards of the same family, so we promote those values to default settings. In some cases flipping a flag was required, so the macros to alter that option had to be adapted as well. Since those AGESA versions are expected to never receive updates, it should not be a problem to change their files to suit our needs. As a result, all but two buildOpts.c files now have less than 100 lines. AGESA f14 boards need less than 50 lines, and f15tn/f16kb just require about 60 or 70 lines in those files. Hopefully, this will make porting more mainboards using AGESA f14/f15tn/f16kb a substantially easier task. TEST=Use abuild --timeless to check that all AGESA f14/f15tn/f16kb mainboards result in identical coreboot binaries. Change-Id: Ife1ca5177d85441b9a7b24d64d7fcbabde6e0409 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41667 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mike Banon <mikebdp2@gmail.com>
coreboot README
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.
Payloads
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.
Supported Hardware
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
Build Requirements
- make
- gcc / g++
Because Linux distribution compilers tend to use lots of patches. coreboot
does lots of "unusual" things in its build system, some of which break due
to those patches, sometimes by gcc aborting, sometimes - and that's worse -
by generating broken object code.
Two options: use our toolchain (eg. make crosstools-i386) or enable the
ANY_TOOLCHAINKconfig option if you're feeling lucky (no support in this case). - iasl (for targets with ACPI support)
- pkg-config
- libssl-dev (openssl)
Optional:
- doxygen (for generating/viewing documentation)
- gdb (for better debugging facilities on some targets)
- ncurses (for
make menuconfigandmake nconfig) - flex and bison (for regenerating parsers)
Building coreboot
Please consult https://www.coreboot.org/Build_HOWTO for details.
Testing coreboot Without Modifying Your Hardware
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.
Website and Mailing List
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
Copyright and License
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.