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heads/blobs/x220/readme.md
Matt DeVillier b29447ef8f
modules/flashrom: update to v1.2 release 
- Update flashrom module to v1.2.
- Drop Thinkpad x220 patch as it's now properly supported.
- Drop 'laptop=force_I_want_a_brick' from board FLASHROM_OPTIONS
  since it's no longer needed.
- Migrate kgpe-d16 patch.

The kgpe-d16 patch needed a complete overhaul when rebased against
flashrom v1.2, and needs close inspection/testing as a result.
The following changes were made from the previous patch:

- dropped addition of 4-byte addressing (4BA), since now supported
- dropped addtiion of Macronix MX25L256 and MX66L512 chips,
  since now supported
- added 4BA erase commands for Winbond W25Q256 chip
- dropped code to show progress indicator, since another PR already adds that

Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
2020-04-20 17:34:08 -05:00

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To build for X220 we need to have the following files in this folder:

  • me.bin - ME binary that has been stripped and truncated with me_cleaner
  • gbe.bin - Network card blob from the original firmware
  • ifd.bin - Flash layout file has been provided as text

To get the binaries, start with a copy of the original Lenovo firmware image. If you do not have one already, you can read one out from the laptops SPI flash.

flashrom --programmer internal -r original.bin

Once you have the image, the provided extraction script will extract the files needed.

./extract.sh -f <romdump>

Use the options '-m' and '-i' to provide me_cleaner and ifdtool if they can not be located automatically.

The flash layout will be automatically adjusted and the ME image cleaned and truncated.

You can now compile the image with:

make BOARD=x220