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Werner Zeh a4e5236e89 mb/siemens/mc_apl1: Enable HDA in devicetree for all mainboard variants 
With commit
'4074ce0cc7 (intel/apollolake: Add HDA to disable_dev function)'
FSP is now requested to switch off HDA PCI device if it is disabled in
devicetree. Doing so results in a warm restart. Normally this event
will be stored in CMOS RAM (if the descriptor is configured to do so)
and therefore no further resets are requested by FSP on the next boots
as long as CMOS RAM is kept alive.

The Siemens mainboards based on Apollo Lake do not have a CMOS battery
and therefore the CMOS is not backed up. This leads to reset requests
from FSP after PCI enumeration on every boot. To avoid this reset enable
HDA in devicetree for these mainboards. Though we do not have any usage
of HDA it should not be an issue that the HDA device is now enabled. The
benefit is though that no reset is requested anymore by FSP.

Change-Id: I637c7c01d73350700c6066fee74fecbb5b93b221
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32295
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 		2019-04-15 11:05:34 +00:00
3rdparty Update vboot submodule to upstream master 2019-03-14 11:39:55 +00:00
Documentation Documentation: Explain FMAP and FMD 2019-04-11 11:24:32 +00:00
configs mb/intel/galileo: Drop the FSP1.1 option 2019-02-11 12:28:52 +00:00
payloads libpayload/option table: Don't pad string entries with garbage 2019-04-11 12:03:07 +00:00
src mb/siemens/mc_apl1: Enable HDA in devicetree for all mainboard variants 2019-04-15 11:05:34 +00:00
util util/genbuild_h: Allow operation with older git versions 2019-04-12 10:19:59 +00:00
.checkpatch.conf .checkpatch.conf: Ignore a few more warnings 2018-08-13 12:23:24 +00:00
.clang-format Revert "lint/clang-format: set to 96 chars per line" 2019-03-15 23:05:06 +00:00
.gitignore util/bucts: Add tool to manipulate BUC.TS bit on Intel targets 2018-11-19 08:19:16 +00:00
.gitmodules submodules: add FSP mirror as non-default submodule 2018-09-02 03:07:50 +00:00
.gitreview
…
COPYING
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MAINTAINERS MAINTAINERS: Update Braswell SoC maintainers 2019-03-06 20:05:11 +00:00
Makefile Hook up Kconfig Ada spec file 2019-02-06 16:20:35 +00:00
Makefile.inc Makefile: Reduce scope of oprom include paths 2019-03-05 16:18:38 +00:00
README.md README: Convert to Markdown 2018-09-16 13:01:58 +00:00
gnat.adc
…
toolchain.inc arch/power8: Rename to ppc64 2018-11-30 20:02:17 +00:00

README.md

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_TOOLCHAIN Kconfig 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 menuconfig and make 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:

https://www.coreboot.org

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.