[U-Boot] omap3_beagle problem booting kernel on latest u-boot

[Aneesh V <aneesh@ti.com>]

John,

My primary suspect would be cache. But the fact that
CONFIG_SYS_DCACHE_OFF is not helping is strange. Could you double-check
this and also make sure that CONFIG_SYS_L2CACHE_OFF is enabled too.

regards,
Aneesh


On Thursday 29 September 2011 11:50 AM, John Rigby wrote:
> Aneesh, Dirk, Jason:
>
> During our monthly release testing of Linaro images we discovered that
> the kernel was pretty unreliable with the latest upstream u-boot.
> After bisecting we found that reverting this patch fixes the problem
>
> commit 45bf05854bc94ed8bae9e9114292895b990327ea
> Author: Aneesh V<aneesh@ti.com>
> Date:   Thu Jun 16 23:30:53 2011 +0000
>
>      armv7: adapt omap3 to the new cache maintenance framework
>
>      adapt omap3 to the new layered cache maintenance framework
>
>      Signed-off-by: Aneesh V<aneesh@ti.com>
>
> No idea why because we tried disabling cache by adding
> CONFIG_SYS_DCACHE_OFF to the board config but that did not seem to fix
> the problem.  The problem in the kernel was general instability
> usually ending in the rootfs not being mounted.  Sometimes random
> kernel crashes have been observed.  We have never made it to a shell
> prompt before reverting.
>
> If we figure anything else out we will let you know.
>
> --john