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96ffc55bfd
This mainboard is very similar to the M4A785-M, but it has
DDR3 instead of DDR2.
That's why most of the code was copied or included from
the m4a785-m directory
Notable changes between the two mainboards include:
* the selection of the last microcode (mc_patch_010000b6.h)
which made it pass the CPU init.
* the selection of DDR3 which made it pass the ram init
This change was tested with the Trisquel 5.0 GNU/Linux distribution
which uses the linux-libre version 2.6.38-12-generic
The mainboard boots fine, however some special care is required for
the onboard sound CODEC, and the onboard video chip:
* the onboard sound CODEC(snd-hda-* has to be blacklisted), the issue
is the same than the ASUS M4A785-M mainboard:
It causes a flood of interupts which prevents booting
* The internal video chip currently requires pci=nocrs, else
the graphics are frozen as soon as the radeon module loads,
and dmesg would print the following(the card only has 256M,
and the mainboard was equiped with 2G of RAM):
[ 3.674762] [drm] radeon: 3584M of VRAM memory ready
[ 3.679863] [drm] radeon: 512M of GTT memory ready.
instead of :
[ 45.876088] [drm] radeon: 256M of VRAM memory ready
[ 45.876089] [drm] radeon: 512M of GTT memory ready.
* The screen(both VGA and HDMI) flickers at high resolution
* Sometimes the computer freeze while changing the resolution
(even the serial console stops responding)
The following peripherals were tested:
* The ath9k PCI wireless card was tested
* The SATA hard disk works fine
* the USB keyboard and mouse work fine
* htop see 2 cores
* serial port works under coreboot and GNU/Linux
* power off and reboot works
CPU frequency cannot be changed yet, this is addressed
in a new commit.
More detail are available here:
http://www.coreboot.org/ASUS_M4A785T-M
dmesg is available here:
http://www.coreboot.org/pipermail/coreboot/2011-November/067604.html
The mailing list thread on the graphic problem is here:
http://www.coreboot.org/pipermail/coreboot/2011-November/067466.html
Change-Id: I5df0bc1f9f0071b1e1ee7c8a356bf517aa8cf732
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/457
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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| documentation | ||
| payloads | ||
| src | ||
| util | ||
| .gitignore | ||
| COPYING | ||
| Makefile | ||
| Makefile.inc | ||
| 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.