[U-Boot] Booting armv8 kernel on uboot

[Tom Rini <trini@ti.com>]

On Wed, May 21, 2014 at 10:40:38AM +0100, Mark Rutland wrote:
> On Wed, May 21, 2014 at 09:46:35AM +0100, Vishal Bhoj wrote:
> > Hi ,
> 
> Hi,
> 
> > I have added mmc driver into the vexpress64 board file for uboot and tested
> > it on FVP base model. I tried booting a kernel on that but it is aborting
> > with the following message:
> > Final value for argc=3
> >    Loading Kernel Image ... OK
> >    kernel loaded at 0x00080000, end = 0x00827024
> > using: FDT
> >    reserving fdt memory region: addr=80000000 size=10000
> > ## initrd_high = 0xffffffffffffffff, copy_to_ram = 1
> >    ramdisk load start = 0x00000000, ramdisk load end = 0x00000000
> > ## device tree at 0000000090008000 ... 000000009000a850 (len=22609 [0x5851])
> >    Loading Device Tree to 000000009fffa000, end 000000009ffff850 ... OK
> > Initial value for argc=3
> > Final value for argc=3
> > ## Transferring control to Linux (at address 80000)...
> > Starting kernel ...
> > 
> > "Synchronous Abort" handler, esr 0x02000000
> 
> That ESR_ELx value means Unknown/uncategorized. It would be fantastic if
> U-Boot would tell us what EL it's branching to the kernel at as a matter
> of course -- it's not really possible to debug from logs otherwise.
> 
> Which EL are you loading the kernel at?

So, this I suspect is one of the problems I was trying to describe to
you back at ELC which turned out to be loading things at the very wrong
address (0x80000 rather than 0x80080000).

Vishal, cay you apply:
http://patchwork.ozlabs.org/patch/345746/
http://patchwork.ozlabs.org/patch/345748/
http://patchwork.ozlabs.org/patch/345749/
http://patchwork.ozlabs.org/patch/345747/

I need to do a v2 still to address some feedback, and then also say we
require Mark's recent series to add an image size field (and other
cleanups) and make use of that (and the rest of the series
changes/clarifications).

But it should get you farther along.

-- 
Tom
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