Hi Ard,
On Sat, Nov 26, 2022 at 06:34 AM, Ard Biesheuvel wrote:
>
> The remaining code still looks a bit clunky to me. Can't we just
> return an error from the library constructor of the library cannot
> initialize due to a missing prerequisite?
The problem with returning an error code from a library constructor is that it
generates an ASSERT for debug builds. The reason is that the generated code in
AutoGen.c looks as shown below:
VOID
EFIAPI
ProcessLibraryConstructorList (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = HobLibConstructor (ImageHandle, SystemTable);
ASSERT_EFI_ERROR (Status);
...
Status = ArmTrngLibConstructor ();
ASSERT_RETURN_ERROR (Status);
}
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