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Re: Fwd: On a Samsung ARM Chromebook, could nv-uboot easily boot to stock linux kernels, by way of ARM-GRUB?



W dniu 09.01.2014 21:15, Held Bier pisze:

>> one cannot boot from a stock linux kernel
> 
> One can, but Samsung ARM Chromebook is not fully supported by mainline
> kernel. At least you'll miss wi-fi.

Wi-Fi, USB3, Audio and some other stuff probably too. But you get
working virtualisation with proper U-Boot.

>> One currently must "borrow" the ChromeOS kernel
> 
> It's the kernel with best support for this machine. If you're trying
> to avoid using Google's blobs, you may take the tree code from
> https://chromium.googlesource.com/ instead
> (chromiumos/third_party/kernel -b release-R31-4731.B is what stable
> Chrome OS uses atm) instead, which you're free to investigate prior
> usage (an old building guide
> http://people.redhat.com/wcohen/chromebook/chrome_kernel.txt is mostly
> right).

> You'll still need few proprietary components to get full hw support:
> 1) Mali GPU userland driver;

OpenGL ES support

> 2) Wi-Fi firmware;

Part of linux-firmware package in all major distributions as it is
freely redistributable.

> 3) HW videocodec firmware (highly optional).

Did someone got it working?

>> The Debian folks are currently stuck on how to boot a stock linux kernel from nv-u-boot
> 
> I doubt they're stuck. The wiki way is just the most easy and fast. I
> had no problems in booting Linux from nv-u-boot, and there is nothing
> distro-special about it. For Google's nv-u-boot you're just making a
> combined image of exynos5250 device tree and your kernel in form of
> zImage, and then booting it.

There are nv-u-boot images which boot Linux kernel with separate DTB.


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