On Thu, 9 Jun 2011, Santosh Shilimkar wrote:
> On 6/9/2011 9:56 PM, Frank Hofmann wrote:
>>
>>
[ ... ]
>> a) What reasons if any are there why cpu_{v7_do_}suspend/resume are not
>> ok to use (on OMAP) for snapshotting core state, for the purpose of
>> hibernation ?
>> If there are any such issues, then how could they be addresssed ?
>>
> Part of the answer is what Russell described. We think it's doable,
> but it needs some work. First and fore most is this code should
> be able to be executed from DDR. It's not the case today.
Ah, I gather that's the _real_ critical point, i.e.
_omap_sram_idle = omap_sram_push(omap34xx_cpu_suspend,
omap34xx_cpu_suspend_sz);
relies on this to be completely consecutive in mem, and relocatable, i.e.
calling _outside_ that area isn't possible ?
I.e. unless a way can be found to _embed_ cpu_suspend/resume here, it's
pretty hard to use ?
Would it be possible / acceptable to have it be relocatable code, and put
it into a common .section ?
Thanks for the feedback,
FrankH.
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