[PATCH 1/3] powerpc/head fsl: fix the case where we are not in the first page

Kumar Gala galak at kernel.crashing.org
Tue May 25 05:01:39 EST 2010


On Apr 4, 2010, at 3:19 PM, Sebastian Andrzej Siewior wrote:

> From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
> 
> During boot we change the mapping a few times until we have a "defined"
> mapping. During this procedure a small 4KiB mapping is created and after
> that one a 64MiB. Currently the offset of the 4KiB page in that we run
> is zero because the complete startup up code is in first page which
> starts at RPN zero.
> If the code is recycled and moved to another location then its execution
> will fail because the start address in 64 MiB mapping is computed
> wrongly. It does not consider the offset to the page from the begin of
> the memory.
> This patch fixes this. Usually (system boot) r25 is zero so this does
> not change anything unless the code is recycled.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
> ---
> arch/powerpc/kernel/head_fsl_booke.S |    1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)

applied to next

- k


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