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On Tue, 20 May 2014 07:52:52 PM Robert Brown wrote:

> Proceeded to compile kernel and modules - without error.
> Followed steps in attached file.
> Fails to boot and because I have no access to u-boot prompt am unable to
> troubleshoot. Anyone have any comments on my compile process?

I suspect that's related to the fact that the boards assume FEX support 
whereas the mainline kernel universe uses Device Tree instead.

The LWN article[1] I've just sent you off-list comments that:

# The solution was a runtime FEX-to-DT translator called sunxi-babelfish.
# It behaves like a normal U-Boot kernel image, but instead reads the
# FEX file and constructs a DT file that gets passed to the DT-based
# kernel that is next in the boot progression. So mainline kernels can
# now boot on most available boards and tablets.

Why not support FEX?  Well basically because it's a reinvention of Device 
Tree, but badly designed.

# Leighton showed why FEX was unsuitable for more than just a single
# SoC—it was not possible to support a driver for new hardware in
# Allwinner's FEX-only kernels.

But as the article goes on to point out the mainline support for these devices 
has a long way to go, so it looks for the near future you're really stuck with 
the old, hardware specific, kernels from the sunxi people. :-(

[1] - https://lwn.net/Articles/597916/ for other subscribers, free from 
Thursday when the next LWN comes out.

Best of luck,
Chris
- -- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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