On 2013-07-30 18:07, Alexander Spyridakis wrote:
Hi Alexander,
Since there was much interest, as of late, to see KVM/ARM running on
Samsung's Exynos5250 Chromebook, and given the fact that we are not
aware
of any current work done on this, we take the opportunity to inform
you
that you can test KVM on the ARM Chromebook by following this guide:
http://www.virtualopensystems.com/media/chromebook/chromebook.pdf
The method used to boot a kernel in HYP mode is with a chained
u-boot,
while the laptop is in developer mode. Parts of the work are based on
v3 of
Andre Pryzawa's "Add HYP mode switching support" patch series.
Source code for a working u-boot for this purpose can be also found
at:
https://github.com/virtualopensystems/u-boot
Please let us know of any comments.
Thanks for putting this together. One remark though:
I don't see any code in u-boot to handle errata specific to the A15
revision used by the Exynos5250. The original Chromebook kernel takes
care of this (it runs in secure mode), but as you're running your kernel
in non-secure mode, you need to have these errata applied on each core
before switching to non-secure mode.
I believe Alex Graf (CC-ed) did this some time ago for Arndale.
Cheers,
M.
--
Fast, cheap, reliable. Pick two.
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