New subject: x60s tablet question : optimized kernel, coreboot with the video fix and serial ports support

11 Jun 2014

      On 30.05.2014 17:47, Charles Devereaux wrote:
...
Hello
I recently purchased a x60s tablet to learn more about coreboot, and
how to make the boot process as fast as possible. The wacom
capabilities are important as this machine will also be used to take
notes - so I figured I would just apply the patches for the video fix
and serial ports support
I applied in this order:

the video fix described on http://www.libreboot.org/howto.html :

$ git clone http://review.coreboot.org/coreboot
$ cd coreboot
$ git fetch http://review.coreboot.org/coreboot refs/changes/20/5320/6
&& git checkout FETCH_HEAD
$ git fetch http://review.coreboot.org/coreboot refs/changes/45/5345/1
&& git cherry-pick FETCH_HEAD
In src/mainboard/lenovo/x60/devicetree.cb, change register
"gpu_backlight" = "0x1280128" to register "gpu_backlight" = "0x879F879E"

the motherboard recon (needed by serial port)

on http://review.coreboot.org/#/c/5246/5
git fetch http://review.coreboot.org/coreboot refs/changes/46/5246/6
&& git checkout FETCH_HEAD

the serial port on http://review.coreboot.org/#/c/5239/ :

git fetch http://review.coreboot.org/coreboot refs/changes/39/5239/17
&& git checkout FETCH_HEAD

the irda fix on http://review.coreboot.org/#/c/5242/:

git fetch http://review.coreboot.org/coreboot refs/changes/42/5242/15
&& git checkout FETCH_HEAD
Problem is, after running the sequence of git commands, the video fix
is gone.
I created a new branch as suggested by git to keep the patches (git
branch new_branch_name ....), but since I never played with git before
I guess I did something wrong.
I could take the patches and manually apply them (in fact I'm about to
do that!), but I wonder what is the proper way to do it - and also if
I'm missing any important recent patch not mentioned in the online guides.
Also, would anyone here already have a .config for a more or less
kernel finetuned (ie no useless peripherals or modules) for a x60
using coreboot? Starting from a good base would save some time.
I tried this last month. I cherrypickt everything execpt the video fix
and got a working coreboot.
Sadly i could not bring the wacom to work but i'm not sure if its a
problem of coreboot or linux.
As soon as i'm at the place where the maschine is i will copy my image
and the patched coreboot
so you can have a trie with it. I assume this won't happen bevor end of
the week.
...
Thanks for any help !
cheers derpeter
...

Re: [coreboot] x60s tablet question : optimized kernel, coreboot with the video fix and serial ports support