[PATCH 2/3] arm: caches: add DCACHE_DEFAULT_OPTION

[Marek Vasut]

On 4/8/20 8:16 PM, Patrick DELAUNAY wrote:
> Dear Marek,
> 
>> From: Marek Vasut <marex at denx.de>
>> Sent: vendredi 3 avril 2020 23:29
>>
>> On 4/3/20 10:28 AM, Patrick Delaunay wrote:
>>> Add the new flags DCACHE_DEFAULT_OPTION to define the default option
>>> to use according the compilation flags
>>> CONFIG_SYS_ARM_CACHE_WRITETHROUGH or
>> CONFIG_SYS_ARM_CACHE_WRITEALLOC.
>>
>> Can't you unify these macros into a single Kconfig "select" statement instead ,
>> and then just select the matching cache configuration in Kconfig ?
> 
> Yes I will try, with 2 steps
> - migrate existing CONFIG_SYS_ARM_CACHE_.... in Kconfig
> - add new option CONFIG_SYS_ARM_CACHE_OPTION
> 
>> Or better yet, can't you extract this info from DT ?
> 
> I don't think.... it is called before device tree parsing
> 

The FDT access should be set up as one of the first things during
U-Boot's boot_init_f , so it should be possible.