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Rudolf Marek 566b4f008f AGESA f15tn: Fix GPP ports resume
The AGESA resumes the GPP ports in the romstage using FchInitResetGpp(),
which does FchGppPortInitS3Phase() for S3 resume. The PreInitGppLink()
looks into CMOS to figure out what ports to just force to Gen1 or
Gen2 PCIe. Then boot continues and in the ramstage the rest of GPP
init is executed. There is a problem that nobody sets properly the
PortDetected flags in the S3 path. As the consequence FchGppDynamicPowerSaving()
thinks the GPP port is not enabled and shut downs it.

The best fix would be also to remove the CMOS dependency which
might be some left over, because AGESA does not use CMOS much for
anything else. There could be also some way how to pass the GPP state
structure from romstage to ramstage possibly via hudson/resume.c
but I don't know how to do that. Similar problem is that the "late"
stage of init again "forgets" the PortDetected state.

This fix fixes the resume issue on Asus F2A85-M. With this patch applied
both GPP ports (used as PCIe x1 and internal ethernet) are working again
after resume.

Change-Id: Idaf609043abb09441c6790504d66d23e0637588f
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/4671
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-02-01 21:44:31 +01:00
3rdparty@324ec3cb64 3rdparty: update to current HEAD 2014-01-11 10:57:34 +01:00
documentation documentation: Change the file name of document for building Coreboot 2013-12-09 11:13:35 +01:00
payloads libpayload: Parse CBMEM ACPI GNVS pointer 2014-01-30 05:49:13 +01:00
src AGESA f15tn: Fix GPP ports resume 2014-02-01 21:44:31 +01:00
util utils: Install man pages as non-executable (chmod 644) 2014-01-31 20:14:58 +01:00
.gitignore gitignore: ignore the crossgcc/build-{arch}-{archive} 2013-12-09 11:13:53 +01:00
.gitmodules gitmodules: Fix 3rdparty updates 2013-06-28 00:56:43 +02:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
Makefile Revert "Makefile: Check $CC variable returned from xcompile is not empty." 2014-01-26 15:46:44 +01:00
Makefile.inc baytrail: add initial support 2014-01-31 16:36:59 +01:00
README Update README with newer version of the text from the web page 2011-06-15 10:16:33 +02:00

README

-------------------------------------------------------------------------------
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 http://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:

 * http://www.coreboot.org/Supported_Motherboards
 * http://www.coreboot.org/Supported_Chipsets_and_Devices


Build Requirements
------------------

 * gcc / g++
 * make

Optional:

 * doxygen (for generating/viewing documentation)
 * iasl (for targets with ACPI support)
 * gdb (for better debugging facilities on some targets)
 * ncurses (for 'make menuconfig')
 * flex and bison (for regenerating parsers)


Building coreboot
-----------------

Please consult http://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 http://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:

  http://www.coreboot.org

You can contact us directly on the coreboot mailing list:

  http://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.