I need to put VPD data in coreboot

Support
1

System Details

  • Device: [Magolor]
  • OS: [chrom flex]
  • Firmware Type: [uefi mr chromebox]
  • Firmware Version: [As reported by the script]
  • Internal storage type: emmc] (if applicable)

Summary of the Issue

Hello imtryo to add VPD to the ufei rom before putting it in tho the chip is there a way i can do that

Steps to Reproduce

  1. get rom

  2. update vpd with info

  3. flash

Expected Behavior

the uefi should have updated with vpd

2

You can modify the rom file with vpd tool. I’m on my phone so bear with me…

Run

wget https://mrchromebox.tech/files/util/vpd.tar.gz

tar -zxf vpd.tar.gz

Then modify the file

sudo ./vpd -f filename.rom -s serial_number=xxx

And whatever else you need to do

Edit: just reread your post. This is for stock firmware, not sure if it’s possible or if there’s a reason to do it to uefi firmware

3
4

the frimware is not stock and i need to testfor a project though i do need to put it in maumlly

5

I have a question: should I perform these modifications using the firmware flash utility, or can I do this via an Ubuntu VM, as that is the environment I am currently using

6

Ubuntu VM is the stupidest move id say

If you are on anything but linux, do a libe boot for all of this

7

Capture
Capture818×520 99.5 KB

8

From that 593mb volume I can tell it’s a live boot. Good job :+1:t2:

9

oh um thanks.sosuggesting i justuse libre okay

10

hey tayne this is the error im getting is did normal

11

no, “filename.rom” is a placeholder, you have to put the name of the file you’re trying to modify there

12

oh okay i have the shell bal for the stock from ware but im trying to modify it before i flash it everytime i put the file name it can not find the file

13

well, either you’re not using the correct file name, or the file isn’t in the same directory as you’re running the vpd command.

14

i have put them in the sameplace but im still getting the same error

command
command998×601 121 KB

15

dicrectory
dicrectory988×530 46.1 KB

16

you need to read what you type more closely. you added a - before the filename in the cbfstool command.

edit: also, why are you trying to read the VPD from the shellball rom? it’s empty

17

I managed to resolve the VPD issue, but now I’m having trouble with recovery. I tried using a USB drive to recover ChromeOS, but the screen stays black during boot. It only displays an image when I use the button combination to enter recovery mode. Any advice on how to fix this?

18

what does this mean?

you boot to recovery. you insert the USB. then what? does it perform a recovery? complete successfully? something else?

19

well it said it succesfully installled but once i take out the usb it restarts but the screen is black and doesnt boot at all