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30 lines
1003 B
Markdown
30 lines
1003 B
Markdown
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To build for T420, we need to have the following files in this folder:
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* `me.bin` - ME binary that has been stripped and truncated with me_cleaner
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* `gbe.bin` - Network card blob from the original firmware
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* `ifd.bin` - Flash layout file has been provided as text
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To get the binaries, start with a copy of the original Lenovo firmware image.
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If you do not have one already, you can read one out from the laptops SPI flash with flashrom
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```
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flashrom -p <programmer> -r original.bin
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```
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Set `<programmer>` to the flashrom programmer type that you will use (for example, `linux_spi:dev=/dev/spidev0.0` on a Raspberry Pi).
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Once you have the image, the provided extraction script will extract the files needed.
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```
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./extract.sh -f <romdump>
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```
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Use the options '-m' and '-i' to provide me_cleaner and ifdtool if they can not be located automatically.
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The flash layout will be automatically adjusted and the ME image cleaned and truncated.
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You can now compile the image with:
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```
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make BOARD=t420
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```
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