X201/Coreboot

Page on getting coreboot installed on the X201

Flashrom

U can use flashrom to backup and write your flash.

flashrom download: https://www.flashrom.org/Downloads

Raspberry PI

• https://www.flashrom.org/RaspberryPi
• https://www.raspberrypi.org/documentation/usage/gpio/ (archive)

Here's how to connect the Raspberry pi GPIO to the chip.

 ===  front (display) ====
 3.3V (pin 17)   N/C          (S)CLK/SCK (pin 23)  MOSI (pin 19)
      |        |             |              |
 dot  |        |             |              |
 CS (pin 24)   MISO (pin 21) N/C           ground (pin 25)
 ===  back (touchpad) ===

The Raspberry PI might not be able to provide enough power for the chip. Find a different 3.3v source, provide PSU-power to the laptop, desolder the chip or improvise.

You can read the flash via (asuming you have the MX25L6445):

./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "MX25L6436E/MX25L6445E/MX25L6465E/MX25L6473E" -r x201-flash.bin

Do this twice and compare files to check for read errors.

Issues

• as per 2016-03-15 the last working coreboot version was: a3e41c089602c58409e8dfd4aceecbdd7d4f4a5b

Files

• Datasheet of flashchip: 25L6445E

Related Links

• http://www.sublab.org/wiki/Projekte/Coreboot-X201/
• https://web.archive.org/web/20150906035857/http://www.sublab.org/wiki/coreboot-x201/ (archived)
• https://www.coreboot.org/Board:lenovo/x201 (archive.org)
• git search