After several recompilations I finally got what I wanted on my Chromebook. Clean and easy way of booting own kernel.

Now situation is clean and easy:

  • power on Chromebook
  • ChromeOS U-Boot from SPI flash starts
  • white screen of warning appears
  • Ctrl-d to skip it
  • U-Boot starts from mmcblk0p1
  • U-Boot reads boot.txt from mmcblk0p2 (ext2 /boot/ partition)
  • U-Boot reads uImage kernel and exynos5250-snow.dtb file from mmcblk0p2
  • Kernel boots directly to Fedora F19 stored on mmcblk0p3

This way I can quickly test mainline kernels (but this may require U-Boot change for simplefb support), manipulate 3.[48]-chromeos ones etc.

Next step would be replace bootloader stored in SPI flash but this voids warranty so let it wait a bit.

New boot setup of my Chromebook
                        

5 thoughts on “New boot setup of my Chromebook

  • 12th September 2013 at 04:16
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    Using chrubuntu now… w/3.4 but was thinking of updating to google’s kernel-next which I have booting in mmc1 w/chromiumos… trying to find the git repo with the blobs now in case I need to replace them..

    Any chance for a refresh on ubuntu’s site? Something with more sane speaker levels would be great. Or if you can point me to a mainline kernel image ready-to-go, I’ll whip up a script to install it… if not, I’ll give it a shot, probably with kernel-next, but figured you’re ahead of me so I’d ask…

    Dunno if you’ll see this, but anyhoo…

    • 12th September 2013 at 18:09
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      Do not bother with kernel-next from ChromeOS. Stick with 3.4 or use mainline (for which I wrote a post already).

      I will not make any Ubuntu updates as I do not use it anymore (except my servers).

  • 16th September 2013 at 19:58
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    OKay… I’ll check out mainline and see if I can get it working. Thanks.

    ft

  • 24th September 2013 at 05:59
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    Any luck with the Mali T604 under Fedora? (Speaker frying) audio? Touchpad? How does it compare to Chrbuntu? ..

    Thanks for all your hard work — w’ere a small but obsessed communtiy 😉

    • 27th September 2013 at 11:41
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      I ignore OpenGL ES but it should work. Speakers can not be fried with current ChromeOS kernels. Touchpad suxx – works on console but dead in X11.

      There is nothing to compare I think. Both systems use same kernel tree so have same problems. It is a matter of how many people will work on fixes/workarounds.

      Still hope for good mainline.

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