[coreboot] Question on VGA BIOS extraction

Iru Cai mytbk920423 at gmail.com
Mon Mar 30 18:24:49 CEST 2015


I'm trying to build Coreboot for ThinkPad X220. I first backup the vendor
BIOS, then use UEFITool to extract a VBIOS. The romheader program detects
the ROM's PCI data structure and reports the device id is 8086:0106, but
the VGA controller's device id is 8086:0126. I extracted the video ROM from
a running X220 memory and use romheader to test it, the result is still
8086:0106. How could this happen?

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