FmpDevicePkg: Add FmpDependencyDevice library class and NULL instance

[mirror_edk2.git] / FmpDevicePkg / Library / FmpDependencyDeviceLibNull / FmpDependencyDeviceLib.c

diff --git a/FmpDevicePkg/Library/FmpDependencyDeviceLibNull/FmpDependencyDeviceLib.c b/FmpDevicePkg/Library/FmpDependencyDeviceLibNull/FmpDependencyDeviceLib.c
new file mode 100644 (file)
index 0000000..0839681
--- /dev/null
+++ b/FmpDevicePkg/Library/FmpDependencyDeviceLibNull/FmpDependencyDeviceLib.c
@@ -0,0 +1,50 @@
+/** @file\r
+  Null instance of FmpDependencyDeviceLib.\r
+\r
+  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>\r
+\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+#include <PiDxe.h>\r
+#include <Library/FmpDependencyDeviceLib.h>\r
+\r
+/**\r
+  Save dependency to Fmp device.\r
+\r
+  @param[in]  Depex       Fmp dependency.\r
+  @param[in]  DepexSize   Size, in bytes, of the Fmp dependency.\r
+\r
+  @retval  EFI_SUCCESS       Save Fmp dependency succeeds.\r
+  @retval  EFI_UNSUPPORTED   Save Fmp dependency is not supported.\r
+  @retval  Others            Save Fmp dependency fails.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+SaveFmpDependency (\r
+  IN EFI_FIRMWARE_IMAGE_DEP  *Depex,\r
+  IN UINT32                  DepexSize\r
+  )\r
+{\r
+  return EFI_UNSUPPORTED;\r
+}\r
+\r
+/**\r
+  Get dependency from the Fmp device.\r
+  This caller is responsible for freeing the dependency buffer.\r
+\r
+  @param[out]  DepexSize   Size, in bytes, of the dependency.\r
+\r
+  @retval  The pointer to dependency.\r
+  @retval  NULL\r
+\r
+**/\r
+EFI_FIRMWARE_IMAGE_DEP*\r
+EFIAPI\r
+GetFmpDependency (\r
+  OUT UINT32  *DepexSize\r
+  )\r
+{\r
+  return NULL;\r
+}\r