[U-Boot] [PATCH] The cache flush using coprocessor must be in lib_arm/cache-cp15.c

[Dirk Behme <dirk.behme@googlemail.com>]

Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 17:51 Thu 28 May     , Kim, Heung Jun wrote:
>> Hi? I'm about to suggest one more thing related to "change cpu.c under
>> cpu/arm_cortexa8 dir to common code.".
>>
>> asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (0));
>>
>> It's the common feature all over the arm core, not only arm cortex A8.
>> The common cache function is defined in the lib_arm/cache-cp15.c as you
>> know. So, It's seems the better method that cache_flush() is moved to
>> lib_arm/cache-cp15.c
> NACK
> 
> to boot linux we are suppose to clean both cache I and DCache
> 
> the I/DCache flush is armv and arch dependant (example ARM7TDMI, armv4wt, armv3,
> armv7, etc...)
> 
> so for now please let it in cpu/$(ARCH)/cpu.c

Well, in

http://lists.denx.de/pipermail/u-boot/2009-May/053396.html

Kim mentioned that he shuffles around the code due to compile errors 
while adding his new code. So we have to see if we can stay with the 
current implementation or have to change something.

Kim: What compile errors do you get for cache_flush()? Could you check 
if you really don't need it? Why don't you get compile errors if you 
move it from cpu/arm_cortexa8/cpu.c to lib_arm/cache-cp15.c?

Best regards

Dirk