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