<html><head><title>Re: [coreboot] Back to original BIOS</title>
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<span style=" font-family:'Courier New'; font-size: 9pt;">P.S.<br>
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<td width=862><span style=" font-family:'courier new'; font-size: 9pt;">Hello Michal,<br>
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The T400 BIOS is in a Pre-UEFI Phoenix FFV format. You can use phoenix_extract.py[1] to extract modules from it.<br>
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To go back to Lenovo BIOS you can try the following:<br>
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1) download an update from lenovo (e.g. 7uuj49us.exe)<br>
2) unpack it with innounp</td>
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<span style=" font-family:'Courier New'; font-size: 9pt;">2b) apparently innoextract [2] can be used on non-Windows platforms<br>
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[2]: <a href="http://constexpr.org/innoextract/">http://constexpr.org/innoextract/</a><br>
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<td width=862><span style=" font-family:'courier new'; font-size: 9pt;">3a) take the FL2 file (e.g. $01B8100.FL2), cut out from 0x200000 to 0x400000 and use the resulting image to replace coreboot in the BIOS region (end of flash).<br>
3b) take the FL1 file (e.g. $01B8100.FL1), unpack it with bcpvd from [1] and flash the result (it's a complete flash image with descriptor and ME) after cutting it at 0x400000<br>
4) according to the descriptor in unpacked FL1 , the GbE region is at 001F6000 - 001F7FFF, so that's the most likely place for storing the MAC address. I'm not sure why your desc.rom lists 5F6000 - 005F7FFF... I think that's outside the flash chip.<br>
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[1]: <a href="https://github.com/coreboot/bios_extract">https://github.com/coreboot/bios_extract</a><br>
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<span style=" font-family:'arial'; font-size: 8pt; color: #c0c0c0;"><i>-- <br>
WBR,<br>
Igor <a style=" color: #c0c0c0; font-style: normal;" href="mailto:roxfan@skynet.be">mailto:roxfan@skynet.be</a></td>
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<span style=" font-family:'arial'; color: #c0c0c0;"><i>-- <br>
WBR,<br>
Igor <a style=" font-style: normal;" href="mailto:skochinsky@mail.ru">mailto:skochinsky@mail.ru</a></body>