Re: [LinuxBIOS] EPIA-M LinuxBIOS worked for my EPIA-M 10000

[Adam Talbot]

-Leon
My board is close to the MII, but not exact.  I have a different south 
bridge. 
http://www.bcmcom.com/bcm_product_ebc3266.htm

So thinking that I can get the north bridge up, I am hoping that I can 
get my board to at least give me something out of the console, from 
there I can start debugging.
I dont think the dd if=/dev/mem.... to grab the video bios will work for 
me, different address range's.
Currently I have linuxbios 2177, same as you, but I dont have a 
computable flash chip (SST39SF040) currently not supported, so I am 
using an external burner. 
The biggest bug I am currently stuck on is the linuxbios.rom keeps 
coming out at 192k and not 256k...  No clue what I have wrong.  If i can 
get 256k then just `cat linuxbios.rom >> linuxbios.rom.512` do that 
twice and I should have a 512 rom.  Can I snag a copy of your 
Config.lb?  My current payload is /etc/hosts, I will switch to filo when 
I can get console running.  For now I would just like to see ANY signs 
of life out of the console.  Console is tested and fully running, I 
currently dont even use a screen, just serial console.
-Adam

Leon Woestenberg wrote:
> Hello Adam,
>
> found your question on the LinuxBIOS list (see  below).
>
> I just retried the EPIA-M LinuxBIOS code again and it worked for my 
> EPIA-M 10000 board. Actually, this is the first time I got it working.
> SVN HEAD tree (rev 2177) with filo 4.2.0 with Linux 2.6.11 (or so).
>
> Note that I did *not* get VGA to work under the early LinuxBIOS boot 
> and FILO boot, it came up when Linux booted. I controlled FILO through 
> a null-modem serial connection.
>
> I have attached my notes below.
>
> Please if you proceed with your EPIA board, keep me in the loop with 
> your experiences. It's hard to find experiences from stuff that worked.
>
> note: Seaching for the VGA issue, it seems I should take the VGA BIOS 
> from some specific version of VIA's BIOS...
>
> Regards,
>
> Leon Woestenberg.
>
> [LinuxBIOS] Status of the epia-m
>
> *Adam Talbot* talbotx at comcast.net 
>
> /Tue Feb 21 23:13:44 CET 2006/
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>
>
> Is the current epia-m code running?
> -Adam
>
> http://www.viaarena.com/default.aspx?PageID=22&DSCat=155&DCatType=3
>
> i010t117.bin
>
> rev 2177 of linuxbiosv2
>
> Debugging output from the EPIA:
>
> 115200,8n1,first serial port
>
> Extract VGA BIOS:
>
> dd if=/dev/mem of=/video.bios.bin \
> bs=1 count=65536 skip=790528
>
> Linux sits on:
>
> /dev/hdc2 on / type ext3 (rw,errors=remount-ro)
>
> In the 'util/flash_and_burn' directory is the source for the 'flash_rom'
>        utility, which is great for re-programming the flash chips on the
>        EPIA-M / MII.
>
> Correction: should be in  'util/flashrom' directory since 2101 or so.
>
> apt-get install pciutils
> apt-get install pciutils-dev
>
> leon@nehemiah:~/sandbox/linuxbios/util/flashrom$ sudo -s
> root@nehemiah:~/sandbox/linuxbios/util/flashrom# ./flashrom
> Calibrating delay loop... ok
> No LinuxBIOS table found.
> Enabling flash write on VT8235...tried to set 0x45 to 0x55 on VT8235 failed (WARNING ONLY)
> SST39SF020A found at physical address: 0xfffc0000
> Flash part is SST39SF020A
> OK, only ENABLING flash write, but NOT FLASHING.
>
> SST39SF020A is a 256k words of 8 bit = 2 Mbit
>
> ST29SF040A is a 512k words of 8 bit = 4 Mbit
>
> Note that the EPIA will address the second half of the 4 Mbit Flash! To be sure, copy the bin to
> both halves of the flash.
>
> wget http://felixx.tsn.or.jp/~ts1/filo/filo-0.4.2.tar.bz2
>
> [...]
>    The main configuration file for the epia-m is in
>    'targets/via/epia-m/Config.lb'
>
>    If you need to make any changes to the configuration, for example you wish to
>    locate filo.elf in a place other than '/filo.elf', or during the more advanced
>    steps of this HOWTO, then these changes are made to this file.
>
>    You need to re-run the './buildtarget via/epia-m' after any such change.
>
>    Change the configuration file to match the full path of the filo.elf file.
>
>    payload /home/leon/sandbox/linuxbios/filo.elf
>
>    Regenerate the build:
>
>    ./buildtarget via/epia-m
>
> cd targets/via/epia-m/epia-m
>
> make
>
> cd filo
> edit Config
> make
>
> cp filo.elf ../linuxbios
> cd ../linuxbios/targets
> ./buildtarget via/epia-m
> cd via/epia-m/epia-m
> edit Makefile
>
> serial.c:54.34: serial.c:66.29: console.c:6.21: console.c:16.26: console.c:51.36: console.c:72.71: bist.h:11.34: auto.c:133.28: 0x81a44e0 noop       Internal compiler warning: awakening noop?