All about computer bios, rom and firmware programming

[johncsl82]

uniflash bios download

hi...

Is there a standard method to read and write a bios, rom and firmware of a computer device such motherboard bios, graphic card bios/firmware, sound card bios/firware, network card bios/firmware, CD-ROM/DVD-ROM bios/firmware............. is there a way to program and interface with all these bios or firmware?


Thanks

 

[polus]

firmware programming tutorial

Do you know assembly?

 

[johncsl82]

not much...... but do you have the some source code or tutorial related to it?

Thanks

 

[Pinczakko]

not much...... but do you have the some source code or tutorial related to it?

Thanks

There's an opensource "all-in-one" BIOS flasher at:
**broken link removed**
This BIOS flasher is coded in Pascal and can flash PCI Expansion ROM beside motherboard BIOS.

In addition, an article for BIOS internals (Award BIOS) is available at:
**broken link removed**

Just in case you need it

Anyway, mind you that now we have a few types of interface to the BIOS chip in contemporary motherboards, i.e. mostly LPC but some new intel chipsets uses SPI. The old one is ISA.

goodluck,

Pinczakko

 

[johncsl82]

There's an opensource "all-in-one" BIOS flasher at:

This BIOS flasher is coded in Pascal and can flash PCI Expansion ROM beside motherboard BIOS.

In addition, an article for BIOS internals (Award BIOS) is available at:


Just in case you need it

Anyway, mind you that now we have a few types of interface to the BIOS chip in contemporary motherboards, i.e. mostly LPC but some new intel chipsets uses SPI. The old one is ISA.

goodluck,

Pinczakko

Thank do you have more of these tutorial or article, and btw best if those tutorial or article are using C or assembly language format

Thanks

 

[Pinczakko]

I couldn't "decode" what you are trying to say :?::?::?:.

Anyway, I forgot to say that you can also get more information in the southbridge (chipset) datasheet. Just download one of the datasheet from Intel's website.

IIRC there's a linux interface for BIOS flashing, but I couldn't locate it again.

Additionally, you can search for CTflasher (IIRC it was made by heise.de) source code.

 

[Pinczakko]

I have more articles in my website regarding BIOS.
The root of the web (contains links to articles)
**broken link removed**

The articles:
#**broken link removed**. This article explains how to patch Award BIOS by using only three tools, i.e. modbin, hexeditor and disassembler.

#**broken link removed**Award BIOS code injection article[/url]. This is an indepth explanation around the code injection issue in Award System BIOS a.k.a original.tmp. Comes with an example.

#**broken link removed**]Low Cost Embedded x86 Teaching Tool article[/url]. This article is basically an indepth tutorial on how to build PCI expansion ROM. Comes with a working example. To put simply, it teachs you how to build a DIY PCI Expansion ROM (PCI card BIOS).

Anyway, I think you also need to download the BIOS Flash ROM Chip datasheet to understand the flashing procedure since there are some established protocol to "un-lock" the Flash ROM chip in order to write into it. Look for this info in Winbond or SST website. Hint: BIOS chip part number is your guide

You might also want to dig some info from Linux BIOS and OpenBIOS website. Do some googling

have a nice day


--Pcz

 

[johncsl82]

how about inofrmation on other computer hardwares like CD-ROM/DVD-RW, graphic card or netwrok card?
I sure those hardware also contain BIOS or firmware....

Thanks

 

[Pinczakko]

how about inofrmation on other computer hardwares like CD-ROM/DVD-RW, graphic card or netwrok card?
I sure those hardware also contain BIOS or firmware....

Thanks

graphic card and network card are using PCI/PCI-Express Card ROM, the fundamentals are explained in the "Low Cost ...." article in the link above. o problem with that.

CDRW/DVDRW ROM is different. I think you can find info's about it at:

**broken link removed**

goodluck

 

[johncsl82]

Thanks

 

[Pinczakko]

The articles are moved to new site (because Geocities will be closed soon):

https://sites.google.com/site/pinczakko

The link above is the "index/root" of the new website. You can find the BIOS-related articles in the Articles section in the navigation section on the left.

Cheers