mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-18 20:47:55 +00:00
30 lines
1003 B
Markdown
30 lines
1003 B
Markdown
|
To build for T420, 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 with flashrom
|
||
|
|
|
||
|
|
```
|
||
|
|
flashrom -p <programmer> -r original.bin
|
||
|
|
```
|
||
|
|
|
||
|
|
Set `<programmer>` to the flashrom programmer type that you will use (for example, `linux_spi:dev=/dev/spidev0.0` on a Raspberry Pi).
|
||
|
|
|
||
|
|
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=t420
|
||
|
|
```
|