On 17 August 2016 at 15:55, Laszlo Ersek <[email protected]> wrote:
> On 08/17/16 15:47, Ard Biesheuvel wrote:
>> On 17 August 2016 at 15:45, Leif Lindholm <[email protected]> wrote:
>>> Since we now have EBC support for AArch64, enable it by default
>>> on the QEMU platform.
>>>
>>> Contributed-under: TianoCore Contribution Agreement 1.0
>>> Signed-off-by: Leif Lindholm <[email protected]>
>>> ---
>>>  ArmVirtPkg/ArmVirtQemu.dsc           | 1 +
>>>  ArmVirtPkg/ArmVirtQemuFvMain.fdf.inc | 5 +++++
>>>  2 files changed, 6 insertions(+)
>>>
>>> diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc
>>> index 9f88786..fb851e7 100644
>>> --- a/ArmVirtPkg/ArmVirtQemu.dsc
>>> +++ b/ArmVirtPkg/ArmVirtQemu.dsc
>>> @@ -401,3 +401,4 @@ [Components.AARCH64]
>>>      <LibraryClasses>
>>>        NULL|ArmVirtPkg/Library/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
>>>    }
>>> +  MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
>>
>> Please add it to ArmVirtPkg/ArmVirtQemuKernel.dsc as well:
>> ArmVirtQemuFvMain.fdf.inc is shared between them.
>>
>> With that,
>>
>> Reviewed-by: Ard Biesheuvel <[email protected]>
>
> Any reason for not adding it to the Xen platform as well?
>
> What kind of modules do we expect to come in EBC? Option ROMs perhaps?

Yes, that is the primary purpose, although any DXE/UEFI driver could
be distributed as an EBC module, I suppose (and we have an EBC version
of fat.efi in FatBinPkg)

> In that case, Xen may indeed be irrelevant here (I have no clue about
> adding oproms to emulated or assigned devices under Xen, so I can't make
> an argument either way.) If we expect general stuff (for example, even
> UEFI_APPLICATION modules) to arrive in EBC, then I think Xen would be a
> justified addition.
>

I remember reading somewhere that EBC was strictly for drivers, not
applications, but I cannot find a reference anymore in the spec.

I wouldn't mind adding it to Xen, but I don't see the point tbh

Thanks,
Ard.
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