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Ben Hewson b93f9cadb2 patch to fix the IDE configuration on EPIA boards. At some point this 
broke and stopped FILO
from being able to boot.

The fix is a simple one line change  plus a comment to
src/mainboard/via/epia/auto.c to write to the IDE
configuration register 0x42 .  This has always been done here, however
at some point
something broke it.

The same register was also being set correctly  in ide_init(), however
for some reason
this does not work. Possibly the register needs to be set before the IDE
peripheral is enabled
or maybe it is a timing issue.

The section of code in ide_init() (
src/southbridge/via/vt8231/vt8231_ide.c ) that does
write to register 0x42 has been commented out as it is superfluous
and I have added a comment to indicate the reason, should someone at a
future date wonder
why.

I have also changed the default COM speed from 19200 to 115200 in
src/mainboard/via/epia/Options.lb
There has been mention before about the EPIA board not being able to use
115200 but I have seen
no such problems with my board.

Signed-off-by: Ben Hewson <ben@hewson-venieri.com>
This patch worked for me and allowed me to boot Debian kernel
2.5.16-4-486  on an epia 800 mhz system.  It is able to consistently get
through the initialization and start init now.

However, after that it crashes at various points in the boot process.

Acked-by: Alex Mauer <hawke@hawkesnest.net>

Note from comitter: I am commiting this, although:
1. it's not the exact right way to fix it up, the chip.h for the sb
should change
2. Alex reports problems, which are almost certainly memory issues. 

But it is as close as we've gotten. I can't test it.

Ron Minnich



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2633 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
 		2007-05-04 19:43:57 +00:00
documentation Document POST codes emitted by LinuxBIOSv2. 2007-03-03 15:01:29 +00:00
src patch to fix the IDE configuration on EPIA boards. At some point this 2007-05-04 19:43:57 +00:00
targets This patch adds support for the AMD Norwich development platform 2007-05-04 18:47:52 +00:00
util Add WinBond Super IO helpers. 2007-05-04 04:47:04 +00:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
NEWS hurry hurry before we might start 3.0 ;-) 2006-09-08 16:34:51 +00:00
README Add a note that the resulting LinuxBIOS images are licensed under the 2007-02-27 22:21:59 +00:00

README 

-------------------------------------------------------------------------------
LinuxBIOS README
-------------------------------------------------------------------------------

LinuxBIOS is a Free Software project aimed at replacing the proprietary
BIOS you can find in most of today's computers.

It performs just a little bit of hardware initialization and then executes
one of many possible payloads, e.g. a Linux kernel.


Payloads
--------

After the basic initialization of the hardware has been performed, any
desired "payload" can be started by LinuxBIOS. Examples include:

 * A Linux kernel
 * FILO (a simple bootloader with filesystem support)
 * GRUB2 (a free bootloader; support is in development)
 * OpenBIOS (a free IEEE1275-1994 Open Firmware implementation)
 * Open Firmware (a free IEEE1275-1994 Open Firmware implementation)
 * SmartFirmware (a free IEEE1275-1994 Open Firmware implementation)
 * GNUFI (a free, UEFI-compatible firmware)
 * Etherboot (for network booting and booting from raw IDE or FILO)
 * ADLO (for booting Windows 2000 or OpenBSD)
 * Plan 9 (a distributed operating system)
 * memtest86 (for testing your RAM)


Supported Hardware
------------------

LinuxBIOS supports a wide range of chipsets, devices, and mainboards.

For details please consult:

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


Website and Mailing List
------------------------

Further details on the project, a FAQ, many HOWTOs, news, development
guidelines and more can be found on the LinuxBIOS website:

  http://www.linuxbios.org

You can contact us directly on the LinuxBIOS mailing list:

  http://www.linuxbios.org/Mailinglist


Copyright and License
---------------------

The copyright on LinuxBIOS is owned by quite a large number of individual
developers and companies. Please check the individual source files for details.

LinuxBIOS 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 (mostly those derived from the Linux kernel) 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 LinuxBIOS images licensed under the GPL, version 2.