Re: [PATCH v1] ARM: decompressor: reset ttbcr fields to use TTBR0 on ARMv7

[Russell King - ARM Linux]

On Wed, Sep 28, 2016 at 06:15:28PM +0530, Srinivas Ramana wrote:
> If the bootloader uses the long descriptor format and jumps to
> kernel decompressor code, TTBCR may not be in a right state.
> Before enabling the MMU, it is required to clear the TTBCR.PD0
> field to use TTBR0 for translation table walks.
> 
> The commit dbece45894d3a ("ARM: 7501/1: decompressor:
> reset ttbcr for VMSA ARMv7 cores") does the reset of TTBCR.N, but
> doesn't consider all the bits for the size of TTBCR.N.
> 
> Clear TTBCR.PD0 field and reset all the three bits of TTBCR.N to
> indicate the use of TTBR0 and the correct base address width.
> 
> Fixes: dbece45894d3 ("ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores")
> Acked-by: Robin Murphy <robin.murphy@xxxxxxx>
> Signed-off-by: Srinivas Ramana <sramana@xxxxxxxxxxxxxx>

Please submit to the patch system, thanks.

-- 
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