> On Feb 27, 2015, at 11:18 PM, Gao, Liming <liming....@intel.com> wrote:
>
> PI spec doesn’t define the clear rule. So, this is not PeiCore compliant
> issue.
> Like Jiewen say, Early PEIM that run before CAR down can consume data from
> PPI and publish HOB. It should be platform PEIM, because we can’t assure the
> generic PEIM is dispatched before CAR down.
>
I agree the issue with the spec is it is unclear who publishes the HOB. Which
is why it is not being published today.
Since it is required on every platform it probably makes sense to do it in the
PEI Core, vs. requiring every CPU PEIM to do it.
Thanks,
Andrew Fish
> Thanks
> Liming
> From: Yao, Jiewen [mailto:jiewen....@intel.com]
> Sent: Saturday, February 28, 2015 2:34 PM
> To: edk2-devel@lists.sourceforge.net
> Subject: Re: [edk2] SEC PPI HOBs
>
> I think CPU PEIM need consume data from PPI and publish HOB.
>
> CPU PEIM might also reinstall EFI_SEC_PLATFORM_INFORMATION_PPI to let PPI
> consume data from HOB. The Old EFI_SEC_PLATFORM_INFORMATION_PPI might refer
> data on CAR, which is not available after CAR teardown.
>
> Thank you
> Yao Jiewen
>
> From: Andrew Fish [mailto:af...@apple.com <mailto:af...@apple.com>]
> Sent: Saturday, February 28, 2015 7:32 AM
> To: edk2-devel@lists.sourceforge.net <mailto:edk2-devel@lists.sourceforge.net>
> Subject: Re: [edk2] SEC PPI HOBs
>
>
> On Feb 27, 2015, at 3:02 PM, Tim Lewis <tim.le...@insyde.com
> <mailto:tim.le...@insyde.com>> wrote:
>
> Section 8.3.1 of the PI Specification, volume 1, says (of the
> EFI_SEC_PLATFORM_INFORMATION_PPI)
>
> This same information will be placed in a GUIDed HOB with the PPI GUID as the
> HOB GUID.
> This allows agents, such as the DXE multiprocessor (MP) driver, to get health
> information for the
> boot-strap processor (BSP).
>
> But it isn’t clear who does this. The SEC code? Certainly the PEI Core
> doesn’t do it From PeiMain.c (~375) And no sample I’ve looked at tries to do
> the GUIDed HOB thing.
>
> Thoughts?
>
>
> The edk2 PEI Core does not conform to the specification?
>
> I’m guessing some private GUID’ed HOBs existed prior to this PI defined one.
> The CPU PEIM pass up data to the CPU DXE driver.
>
> Thanks,
>
> Andrew Fish
>
>
> Tim
> //
> // If SEC provided any PPI services to PEI, install them.
> //
> if (PpiList != NULL) {
> Status = PeiServicesInstallPpi (PpiList);
> ASSERT_EFI_ERROR (Status);
> }
>
>
>
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