Mikhail Savchenko wrote:

Hi, can you tell me what kind of technology documentations should our company (we are AMD partner) get from AMD/ATI to be able add support of ATI chipsets to coreboot?

You need the data sheets for (northbridge and) southbridge, as well as possibly schematics of the board used. Not sure if there is a specific "Bios Writers Guide" for the ATI chipset you are using. There is a "Bios and Kernel Developers Guide" for AMD64 from AMD which is an excellent document, but it covers (mostly) AMD chipsets only

Stefan

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