CloverBootloader/Protocols/DriverOverride/DriverOverride.c

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/*
* DriverOverride.c
*
* Funcs for installing EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL
* in CloverEFI
*
*/
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/PlatformDriverOverride.h>
//////////////////////////////////////////////////////////////////////
//
// Our EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL implementation
//
/** Our EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL.GetDriver implementation. */
EFI_STATUS
EFIAPI
PlatformGetDriver (
IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN OUT EFI_HANDLE *DriverImageHandle
)
{
return EFI_NOT_FOUND;
}
/** Our EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL.GetDriverPath implementation. */
EFI_STATUS
EFIAPI
PlatformGetDriverPath (
IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DriverImagePath
)
{
return EFI_UNSUPPORTED;
}
/** Our EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL.DriverLoaded implementation. */
EFI_STATUS
EFIAPI
PlatformDriverLoaded (
IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *DriverImagePath,
IN EFI_HANDLE DriverImageHandle
)
{
return EFI_UNSUPPORTED;
}
/** Our EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL structure. */
EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL mPlatformDriverOverrideProtocol = {
PlatformGetDriver,
PlatformGetDriverPath,
PlatformDriverLoaded
};
//////////////////////////////////////////////////////////////////////
//
// Entry
//
//////
EFI_STATUS
EFIAPI
DriverOverrideEntrypoint(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE NewHandle;
NewHandle = NULL; // install to a new handle
Status = gBS->InstallMultipleProtocolInterfaces (
&NewHandle,
&gEfiPlatformDriverOverrideProtocolGuid,
&mPlatformDriverOverrideProtocol,
NULL
);
return Status;
}