[PATCH 0/5] V7/Cortex/omap34xx fixes for 2.6.33-rc1: DCC, kexec, atags

On Tue, Dec 29, 2009 at 02:07:05PM -0800, Tony Lindgren wrote:

Hi,

* Magnus Damm [off-list ref] [091227 21:54]:

quoted

Hi Tony,

On Sat, Dec 19, 2009 at 12:45 PM, Tony Lindgren [off-list ref] wrote:

quoted

Here are some v7 fixes, mostly to make kexec work.

Using 2.6.33-rc1, these fixes, and kexec from kexec-tools
git repo, I can reboot my n900 in a loop reliably.

Thanks for your work on this. I previously tested kexec on ARM V6 and
V7 and noticed that V7 didn't work. I revisited my V7 test after
becoming aware of your patches. The single patch below unbreaks V7 on
my target system.

quoted

? ? ?arm: Fix cpu_proc_fin() for proc-v7.S and make kexec work

Cool. Thank you for fixing the kexec source :)

Are you seeing the occasional crc errors when uncompressing the
new kernel on your v7?

I'm seeing those maybe 1 out of 10 times on omap3430 boards unless if
I do an extra (and wrong) flush_cache_all after local_flush_tlb_all
at the end of setup_mm_for_reboot.

Hi,

I've also been playing with this patch.

One thing I noticed is that If I disable L2 cache in cpu_v7_proc_fin()
then kexec works fine and no crc errors from decompressor (I did
~30 kexec boots). With L2 cache enabled, it fails almost immediately.

Tested with OMAP3430 ES3.1.

Thanks,
MW