[U-Boot] [PATCH v3] armv8: errata: Implement workaround for Cortex-A53 Erratum 855873

[York Sun]

On 01/12/2018 01:12 AM, Michal Simek wrote:
> On 11.1.2018 20:36, York Sun wrote:
>> On 12/27/2017 09:20 PM, Alison Wang wrote:
>>> 855873: An eviction might overtake a cache clean operation
>>> Workaround: The erratum can be avoided by upgrading cache clean by
>>> address operations to cache clean and invalidate operations. For
>>> Cortex-A53 r0p3 and later release, this can be achieved by setting
>>> CPUACTLR.ENDCCASCI to 1.
>>>
>>> This patch is to implement the workaround for this erratum.
>>>
>>> Signed-off-by: Alison Wang <alison.wang at nxp.com>
>>> ---
>>> Changes in v3:
>>> - Check the major revision of Cortex-A53.
>>>
>>> Changes in v2:
>>> - Check the revision of Cortex-A53 and apply the erratum to r0p3 and later release.
>>> - Fix the mistake in the commit description.
>>>
>>
>> Applied to fsl-qoriq master. Thanks.
> 
> Just a note if this is just for a53 should we consider to place these
> Kconfigs to arch/arm/cpu/armv8/Kconfig?
> 

We were following Tom Rini's move in commit 8dda2e2f9. I am not against
moving ARMv8 related config options, if no single erratum applies to
both ARMv8 and legacy cores.

York