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Editing system menu vars tool (AMI bios maybe others)
#1
Based on this patch

https://github.com/bobafetthotmail/insyd...-cmd.patch

i've changed it to support edit the Setup-EC87D643-EBA4-4BB5-A1E5-3F3E36B20DA9 found on a AMI bios.

u can check if you have this guild using the uefi sheel (use dmpstore cmd)

if u dont have this guid dont use this tool !


to use it:

- login to uefi shell


- you will need to dump your setup menu ifr

Form: , Form ID: 0x401 {01 86 01 04 02 00}
0x46258         Setting: PCI Latency Timer, Variable: 0x1 {05 A6 64 07 66 07 05 00 01 00 01 00 10 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
0x4627E             Option: 32 PCI Bus Clocks, Value: 0x20 {09 0E 76 07 30 00 20 00 00 00 00 00 00 00}
0x4628C             Option: 64 PCI Bus Clocks, Value: 0x40 {09 0E 77 07 00 00 40 00 00 00 00 00 00 00}
0x4629A             Option: 96 PCI Bus Clocks, Value: 0x60 {09 0E 78 07 00 00 60 00 00 00 00 00 00 00}
0x462A8             Option: 128 PCI Bus Clocks, Value: 0x80 {09 0E 79 07 00 00 80 00 00 00 00 00 00 00}
0x462B6             Option: 160 PCI Bus Clocks, Value: 0xA0 {09 0E 7A 07 00 00 A0 00 00 00 00 00 00 00}
0x462C4             Option: 192 PCI Bus Clocks, Value: 0xC0 {09 0E 7B 07 00 00 C0 00 00 00 00 00 00 00}
0x462D2             Option: 224 PCI Bus Clocks, Value: 0xE0 {09 0E 7C 07 00 00 E0 00 00 00 00 00 00 00}
0x462E0             Option: 248 PCI Bus Clocks, Value: 0xF8 {09 0E 7D 07 00 00 F8 00 00 00 00 00 00 00}
0x462EE         End of Options {29 02}

- call setup_var.efi (type fs0: to choose 1st partition and move this tool there)
- type setup_var 1 40 (this will change latency from above sample)

this patch was done because my bios (AMI) as two setup vars defined in nvram and also to fix wrong var size from original version.

tested on a Aspire XC-230 bios link https://global-download.acer.com/GDFiles...3425953974&Step1=DESKTOP&Step2=ASPIRE&Step3=ASPIRE%20XC-230&OS=ALL&LC=en&BC=ACER&SC=AAP_1#_ga=2.139781296.246275085.1517678130-1501085202.1517678130
Enjoy


Attached Files
.zip   setup_var.zip (Size: 813.84 KB / Downloads: 17)
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