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diff --git a/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h b/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h
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+++ b/OvmfPkg/Csm/Include/Protocol/VgaMiniPort.h
@@ -0,0 +1,88 @@
+/** @file
+  The VGA Mini Port Protocol used to set the text display mode of a VGA controller.
+
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __VGA_MINI_PORT_H_
+#define __VGA_MINI_PORT_H_
+
+///
+/// Global ID for the EFI_VGA_MINI_PORT_PROTOCOL.
+///
+#define EFI_VGA_MINI_PORT_PROTOCOL_GUID \
+  { \
+    0xc7735a2f, 0x88f5, 0x4882, {0xae, 0x63, 0xfa, 0xac, 0x8c, 0x8b, 0x86, 0xb3 } \
+  }
+
+///
+/// Forward declaration for the EFI_VGA_MINI_PORT_PROTOCOL.
+///
+typedef struct _EFI_VGA_MINI_PORT_PROTOCOL  EFI_VGA_MINI_PORT_PROTOCOL;
+
+/**
+  Sets the text display mode of a VGA controller.
+
+  Sets the text display mode of the VGA controller to the mode specified by
+  ModeNumber.  A ModeNumber of 0 is a request for an 80x25 text mode.  A
+  ModeNumber of 1 is a request for an 80x50 text mode.  If ModeNumber is greater
+  than MaxModeNumber, then EFI_UNSUPPORTED is returned.  If the VGA controller
+  is not functioning properly, then EFI_DEVICE_ERROR is returned.  If the VGA
+  controller is sucessfully set to the mode number specified by ModeNumber, then
+  EFI_SUCCESS is returned.
+
+  @param[in] This         A pointer to the EFI_VGA_MINI_PORT_PROTOCOL instance.
+  @param[in] ModeNumber   The requested mode number.  0 for 80x25.  1 for 80x5.
+
+  @retval EFI_SUCCESS        The mode number was set.
+  @retval EFI_UNSUPPORTED    The mode number specified by ModeNumber is not supported.
+  @retval EFI_DEVICE_ERROR   The device is not functioning properly.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_VGA_MINI_PORT_SET_MODE)(
+  IN EFI_VGA_MINI_PORT_PROTOCOL  *This,
+  IN UINTN                        ModeNumber
+  );
+
+struct _EFI_VGA_MINI_PORT_PROTOCOL {
+  EFI_VGA_MINI_PORT_SET_MODE  SetMode;
+  ///
+  /// MMIO base address of the VGA text mode framebuffer.  Typically set to 0xB8000.
+  ///
+  UINT64                      VgaMemoryOffset;
+  ///
+  /// I/O Port address for the VGA CRTC address register. Typically set to 0x3D4.
+  ///
+  UINT64                      CrtcAddressRegisterOffset;
+  ///
+  /// I/O Port address for the VGA CRTC data register.  Typically set to 0x3D5.
+  ///
+  UINT64                      CrtcDataRegisterOffset;
+  ///
+  /// PCI Controller MMIO BAR index of the VGA text mode frame buffer.  Typically
+  /// set to EFI_PCI_IO_PASS_THROUGH_BAR
+  ///
+  UINT8                       VgaMemoryBar;
+  ///
+  /// PCI Controller I/O BAR index of the VGA CRTC address register.  Typically
+  /// set to EFI_PCI_IO_PASS_THROUGH_BAR
+  ///
+  UINT8                       CrtcAddressRegisterBar;
+  ///
+  /// PCI Controller I/O BAR index of the VGA CRTC data register.  Typically set
+  /// to EFI_PCI_IO_PASS_THROUGH_BAR
+  ///
+  UINT8                       CrtcDataRegisterBar;
+  ///
+  /// The maximum number of text modes that this VGA controller supports.
+  ///
+  UINT8                       MaxMode;
+};
+
+extern EFI_GUID gEfiVgaMiniPortProtocolGuid;
+
+#endif