1 files changed, 106 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.h b/roms/edk2/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.h
new file mode 100644
index 000000000..219d0d6e8
--- /dev/null
+++ b/roms/edk2/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.h
@@ -0,0 +1,106 @@
+/** @file
+  OVMF support for QEMU system firmware flash device
+
+  Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __QEMU_FLASH_H__
+#define __QEMU_FLASH_H__
+
+#include <Protocol/FirmwareVolumeBlock.h>
+
+extern UINT8 *mFlashBase;
+
+/**
+  Read from QEMU Flash
+
+  @param[in] Lba      The starting logical block index to read from.
+  @param[in] Offset   Offset into the block at which to begin reading.
+  @param[in] NumBytes On input, indicates the requested read size. On
+                      output, indicates the actual number of bytes read
+  @param[in] Buffer   Pointer to the buffer to read into.
+
+**/
+EFI_STATUS
+QemuFlashRead (
+  IN        EFI_LBA                              Lba,
+  IN        UINTN                                Offset,
+  IN        UINTN                                *NumBytes,
+  IN        UINT8                                *Buffer
+  );
+
+
+/**
+  Write to QEMU Flash
+
+  @param[in] Lba      The starting logical block index to write to.
+  @param[in] Offset   Offset into the block at which to begin writing.
+  @param[in] NumBytes On input, indicates the requested write size. On
+                      output, indicates the actual number of bytes written
+  @param[in] Buffer   Pointer to the data to write.
+
+**/
+EFI_STATUS
+QemuFlashWrite (
+  IN        EFI_LBA                              Lba,
+  IN        UINTN                                Offset,
+  IN        UINTN                                *NumBytes,
+  IN        UINT8                                *Buffer
+  );
+
+
+/**
+  Erase a QEMU Flash block
+
+  @param Lba    The logical block index to erase.
+
+**/
+EFI_STATUS
+QemuFlashEraseBlock (
+  IN   EFI_LBA      Lba
+  );
+
+
+/**
+  Initializes QEMU flash memory support
+
+  @retval EFI_WRITE_PROTECTED   The QEMU flash device is not present.
+  @retval EFI_SUCCESS           The QEMU flash device is supported.
+
+**/
+EFI_STATUS
+QemuFlashInitialize (
+  VOID
+  );
+
+
+VOID
+QemuFlashConvertPointers (
+  VOID
+  );
+
+VOID
+QemuFlashBeforeProbe (
+  IN  EFI_PHYSICAL_ADDRESS    BaseAddress,
+  IN  UINTN                   FdBlockSize,
+  IN  UINTN                   FdBlockCount
+  );
+
+/**
+  Write to QEMU Flash
+
+  @param[in] Ptr    Pointer to the location to write.
+  @param[in] Value  The value to write.
+
+**/
+VOID
+QemuFlashPtrWrite (
+  IN        volatile UINT8    *Ptr,
+  IN        UINT8             Value
+  );
+
+#endif
+