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MdePkg: UefiDevicePathLib: Support UefiDevicePathLib under StandaloneMm

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This change added an instance of UefiDevicePathLib for StandaloneMm. It
abstracts DevicePathFromHandle function into different files for
Standalone MM and other instances to avoid linking gBS into MM_STANDALONE
drivers.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>

Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Kun Qin
2020-12-17 14:35:38 -08:00
parent 1f0fa9187b
commit 14a746bb6a
7 changed files with 169 additions and 33 deletions
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33
MdePkg/Library/UefiDevicePathLib/DevicePathUtilities.c
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@@ -806,39 +806,6 @@ UefiDevicePathLibIsDevicePathMultiInstance (
}
/**
Retrieves the device path protocol from a handle.
This function returns the device path protocol from the handle specified by Handle.
If Handle is NULL or Handle does not contain a device path protocol, then NULL
is returned.
@param Handle The handle from which to retrieve the device
path protocol.
@return The device path protocol from the handle specified by Handle.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
DevicePathFromHandle (
IN EFI_HANDLE Handle
)
{
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_STATUS Status;
Status = gBS->HandleProtocol (
Handle,
&gEfiDevicePathProtocolGuid,
(VOID *) &DevicePath
);
if (EFI_ERROR (Status)) {
DevicePath = NULL;
}
return DevicePath;
}
/**
Allocates a device path for a file and appends it to an existing device path.