Hello, I confirm that it can be applied to Phoenix BOIS

[shenlei89]

Hello, I confirm that it can be applied to Phoenix BOIS
Using the 'setup_var_cv AmdSetup 0xC1' command will return offset=0x0f
using “setup_ Var_ cv AmdSetup 0xC1 0x0f 0x01” command also prompts success
But after entering the BIOS, nothing changed, and when entering this tool again to query 0xc1, the offset value returned is still 0x0f
Is there anything special about Phoenix bios? Looking forward to your reply, thank you for your help, thank you!

[datasone]

How did you decide the offset 0x0F? Normally you need to analyze the UEFI firmware image for retrieving setting item offset information.

Besides, I think you are using the grub tool instead of setup_var.efi? (due to the setup_var_cv you mentioned). You are using the command wrongly (the first parameter is the name of the VarStore) and may refer to the README in that repo for detailed usage. Though I highly recommend using setup_var.efi instead of that deprecated tool.

BTW about the grub tool, some of the output came from legacy code and shouldn't be treated as correct (like that offset=0x0f). It's highly probable that the values doesn't match output names or tags.

[shenlei89]

Thank you very much for your reply
Please take a look at the following two pictures


I viewed the module of the option I wanted to modify through uefitool, then unzipped the module and explained it as a TXT document through the tool

[shenlei89]

IGPU Configuration does not exist in setup, so I specified 'amdsetup' using the 'setup_var_cv' command. '0xc1' is the iGPU Configuration option, 0XF is the default offset value, and 0X1 is the offset value I want

[shenlei89]

File_DXE_driver_CbsSetupDxeRN_CbsSetupDxeRN IFR.txt
This document