OvmfPkg: clone NorFlashPlatformLib into VirtNorFlashPlatformLib

Create a new library class in Ovmf that duplicates the existing
NorFlashPlatformLib, but which will be tied to the VirtNorFlashDxe
driver that will be introduced in a subsequent patch. This allows us to
retire the original from ArmPlatformPkg.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>

OvmfPkg/Include/Library/VirtNorFlashPlatformLib.h

@@ -0,0 +1,30 @@
+/** @file
+
+ Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ **/
+
+#ifndef __VIRT_NOR_FLASH_PLATFORM_LIB__
+#define __VIRT_NOR_FLASH_PLATFORM_LIB__
+
+typedef struct {
+  UINTN    DeviceBaseAddress;       // Start address of the Device Base Address (DBA)
+  UINTN    RegionBaseAddress;       // Start address of one single region
+  UINTN    Size;
+  UINTN    BlockSize;
+} VIRT_NOR_FLASH_DESCRIPTION;
+
+EFI_STATUS
+VirtNorFlashPlatformInitialization (
+  VOID
+  );
+
+EFI_STATUS
+VirtNorFlashPlatformGetDevices (
+  OUT VIRT_NOR_FLASH_DESCRIPTION  **NorFlashDescriptions,
+  OUT UINT32                      *Count
+  );
+
+#endif /* __VIRT_NOR_FLASH_PLATFORM_LIB__ */

OvmfPkg/OvmfPkg.dec

@@ -101,6 +101,10 @@
   #                  transports.
   VirtioMmioDeviceLib|Include/Library/VirtioMmioDeviceLib.h
 
+  ##  @libraryclass  Provides a Nor flash interface.
+  #
+  VirtNorFlashPlatformLib|Include/Library/VirtNorFlashPlatformLib.h
+
   ##  @libraryclass  Invoke Xen hypercalls
   #
   XenHypercallLib|Include/Library/XenHypercallLib.h