[U-Boot] [PATCH v4] ARM926ejs: Add routines to invalidate D-Cache

Heiko Schocher
2011-08-10T05:56:37Z

Hello Hong,

Marek Vasut wrote:
> On Wednesday, August 10, 2011 04:49:25 AM Hong Xu wrote:
>> After DMA operation, we need to maintain D-Cache coherency.
>> So that the DCache must be invalidated (hence CPU will fetch
>> data written by DMA controller from RAM).
>>
>> Tested on AT91SAM9261EK with Peripheral DMA controller.
>
> Hi Hong,
>
> one more thing, not that I want to disappoint you.
>
> Try to take a look at arch/arm/cpu/armv7/cache_v7.c
>
> Maybe we should do the same for arm926ejs -- have arch/arm/cpu/arm926ejs/cache.c
> -- containing arm926ejs specific cache management functions. That way,
> arch/arm/lib/cache.c won't become mess.
>
> What do you think ?

Full Ack, this should be moved like on armv7 to
arch/arm/cpu/arm926ejs/cache.c

Thanks!

bye,
Heiko
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany