[U-Boot] p4080ds starts OS with MSR[EE]=1 and DEC armed?

[Jimi Xenidis]

On Mar 14, 2011, at 1:09 PM, Scott Wood wrote:
> 
> On Sat, 12 Mar 2011 16:56:09 -0600
> Kumar Gala <galak at kernel.crashing.org> wrote:
> 
>> 
>> On Mar 3, 2011, at 8:59 AM, Jimi Xenidis wrote:
>> 
>>> I was surprised to find myself at the decrement interrupt when running my new stuff.
>>> That is against ePAPR, right?
>>> Does u-boot at least make sure that the DEC is set to some large value before it leaps at me?
>>> I don't mind forcing EE=0 but I'd like to make sure I make it that far into the code :)
>>> -JX
>> 
>> Jimi,
>> 
>> Not sure how or why you are seeing this, but u-boot should disable interrupts in common/cmd_bootm.c
>> 
>> Look for disable_interrupts() -> this should set MSR[EE] = 0.
> 
> What about the rest of MSR -- ME/CE/DE?

I can attest that MSR=0 when my program takes over.
BTW: secondary CPUs have MSR[IS|DS] == 0b11

-JX

> 
> -Scott