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Entrypoint of PayloadEntry doesn't conform to the payload entry point defined in universal payload spec #3

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niruiyu opened this issue Oct 20, 2020 · 0 comments

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niruiyu commented Oct 20, 2020

Current entrypoint prototype is as below:
PayloadEntry (
IN UINTN BootloaderParameter,
IN UINTN FdBase
)

Spec defines the entry point prototype should be:
1st parameter: HobList
2nd parameter: ImageBase of payload entry

Currently the Payload entry locates the HOB from a pointer stored in stack:
(*(UINTN *)(UINTN)(PcdGet32(PcdPayloadStackTop) - 2 * sizeof(UINT64))).

It should directly assume the BootloaderParameter as the HOB base.

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