coreboot-kgpe-d16

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Paul Menzel d654f42e27 AMD: Reduce stack size from 64 KB to the default of 4 KB Apply the following commit to all AMD boards. commit `935850e082` Author: Stefan Reinauer <reinauer@chromium.org> Date: Mon May 6 16:16:03 2013 -0700 asrock/e350m1: reduce default stack size The stack used on the ASRock E350M1 is significantly less than what we currently set (64k per core). In fact, we use about half of the default stack size (4k) on core 0 and even less on non BSP cores [1]: $ grep stack coreboot_without_patch_but_monotonic_timer.log CPU1: stack_base 002a0000, stack_end 002afff8 CPU1: stack: 002a0000 - 002b0000, lowest used address 002afda8, stack used: 600 bytes CPU0: stack: 002b0000 - 002c0000, lowest used address 002bf75c, stack used: 2212 bytes […] Reviewed-on: http://review.coreboot.org/3209 Please note that AGESA seems to define bigger stack sizes. But these seem to be too much too. $ git grep STACK_SIZE src/vendorcode/amd […] src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c:#define BSP_STACK_SIZE 16384 src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c:#define CORE0_STACK_SIZE 16384 src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c:#define CORE1_STACK_SIZE 4096 src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c: BSP_STACK_SIZE, src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c: CORE0_STACK_SIZE, src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14CacheDefaults.c: CORE1_STACK_SIZE, […] The following command was used to create the patch. $ git grep -l STACK_SIZE src/mainboard/ \| xargs sed -i '/STACK_SIZE/,+3d' Change-Id: I36b95b7a6f190b64d0639fc036ce2fb0253f3fa1 Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/3217 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>		2013-05-09 20:19:24 +02:00
3rdparty@ba8caa30bd	Update 3rdparty mark to latest repository	2013-03-15 19:09:08 +01:00
documentation	documentation: Complete the AMD-S3.txt	2013-04-16 02:31:08 +02:00
payloads	cbfs_core.c: make cfbs searches even less verbose	2013-05-08 05:02:13 +02:00
src	AMD: Reduce stack size from 64 KB to the default of 4 KB	2013-05-09 20:19:24 +02:00
util	nvramtool: Use CMOS_SIZE for cmos size	2013-05-04 00:14:11 +02:00
.gitignore	add a few entries to .gitignore	2013-01-10 22:51:20 +01:00
.gitmodules	gitmodules: Ignore 3rdparty in "diff family"	2013-03-16 04:07:14 +01:00
.gitreview	add .gitreview	2012-11-01 23:13:39 +01:00
COPYING	update license template.	2006-08-12 22:03:36 +00:00
Makefile	build system: Retire REQUIRES_BLOB	2013-02-19 11:00:41 +01:00
Makefile.inc	rmodule: add rmodules class and new type	2013-03-18 20:46:40 +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.