[U-Boot] Commit 294b91a5817147d4b7f47be2ac69bac2a1f26491 broke mpc85xx

[York Sun]

On 10/01/2014 07:15 PM, Scott Wood wrote:
>>
>> I can change init sequence as far as I put initr_unlock_ram_in_cache before
>> initr_malloc, T4240QDS still boots.
> 
> Yes, we shouldn't have any reason to keep the cache locked that long.
> 
>> I examine the code but don't understand why I have to do so. P4080DS doesn't
>> suffer this issue. I am going to seek some help from Scott and other in-house
>> experts.
> 
> My guess is that it has to do with the way caches work on e6500.  We try
> to lock lines in L1, but L1 can't hold dirty lines, so perhaps the hang
> comes when the DDR activity evicts the dirty lines from L2 (where they
> weren't locked).
> 

Scott,

Thanks for looking into this. I can propose a fix, but first I will have to do a
thorough test on all varieties of 85xx board we have.

York