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efi_loader: add helper macro to construct protocol objects

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There are a bunch of protocols which should be exposed by GUID but are
not.  Add a helper macro to create an efi_object, to avoid much typing.

Note that using the pointer for efiobj->handle is semi-arbitrary.  We
just need a unique value to match the efiobj supporting the protocol
with the handle that LocateHandle() returns..

See LibLocateProtocol() in gnu-efi.  It does LocateHandle() to find all
the handles, and then loops over them calling HandleProtocol() with the
GUID of the protocol it is trying to find.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Rob Clark 2017-07-24 10:39:00 -04:00 committed by Alexander Graf
parent 804b1d737a
commit 641833db4a
1 changed files with 8 additions and 0 deletions
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8
include/efi_loader.h
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@ -66,6 +66,14 @@ struct efi_object {
void *handle;
};
#define EFI_PROTOCOL_OBJECT(_guid, _protocol) (struct efi_object){ \
.protocols = {{ \
.guid = &(_guid), \
.protocol_interface = (void *)(_protocol), \
}}, \
.handle = (void *)(_protocol), \
}
/**
* struct efi_event
*