Flashing Bios Success...

Nathanael Noblet nathanael at gnat.ca
Thu May 8 14:41:00 CEST 2003


On Thursday, May 8, 2003, at 01:04  PM, ron minnich wrote:

> On 8 May 2003, Nathanael D. Noblet wrote:
>
>> 00:01.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513 (rev
>> b3)
>> 00: 39 10 08 00 0f 00 00 02 b3 00 01 06 00 00 80 00
>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 40: c8 80 80 80 80 60 00 02 ff ff 10 0f 11 20 04 01
>> 50: 11 28 02 01 62 00 66 00 9c 2e 12 00 0c e9 00 00
>> 60: 0c 80 7f 00 34 01 00 00 90 02 80 00 20 1d 00 00
>> 70: 1e 00 00 80 80 08 00 00 00 00 00 80 00 00 80 00
>> 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
> this is the south bridge. This is the "function" (sub-device) of the
> southbridge that controls flash write.
>
> reg 0x45 has a value of:
> 0x60, binary 0110 0000
> to make eeprom flashable, bits 5,2 must == 01. see page 76 of the book.
>
> bit 5 is 1 and bit 2 is 0, which I think is 10. We need to flip them.
>
> 0100 0100
>
>   4   4
>
> Try this
> setpci -s 0:1.0 45.b (read the value)
> setpci -s 0:1.0 45.b=44
> setpci -s 0:1.0 45.b (read the value back and make sure it is 44)
>
> then run flash_rom and see what happens.

EEPROM Found! nice!
So now I'll try getting good old linuxbios on there...

Seriously thanks alot...

Is there anything I need to do to flash_rom.c to get that to work all 
the time?

having someone explain what the -xxx output is sure helps understand 
what it is (besides knowing it is a hex dump)...

-- 
Nathanael Noblet
Gnat Solutions
4604 Monterey Ave NW
Calgary, AB
T3B 5K4

T/F 403.288.5360
C 403.809.5368

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