Hi..

Could someone please tell me how to edit or read the vscc table in AMD bios ?

I have a bad 74m12jwsiq chip on nm-d521 board, it's a rpmc chip and I want to check the table in the dump for all rpmc supported chips

is it possible to disable rpmc to support regular non-rpmc chips ?

edit: the original 74m12jwsiq throws errors while verifying but still the board starts with it, while a fresh dump with a regular 25q128 chip won't give a start at all..

what w25q128 ?

1.8v only - w25q128fwsq jwsq needed

of course it should be 1.8v (fw..jw..), the point is there is no start at all with non-rpmc chips... is it possible to disable it and how to edit amd bios and check vscc table ?

I'm very familiar with intel bios but not with amd's

Try exact W25Q128JW SPI. Or just buy a new RPMC SPI - W74M12JW or W25R128JW

It turned out the chip is good

on the EZP programmer with 1.8v adapter the chip is not detected, manually select W25Q128FW(1.8v), DO NOT USE AUTO FUNCTION !

Manually erase -> write -> disconnect and reconnect the programmer -> verify

and it will verify successfully

for how to check supported chips in AMD bios, it turned out to be easy... using UEFITool the supported chips will be found in SPIFlashProDXE or just search text "winbond" and check with hex view

closing..