1 files changed, 96 insertions, 0 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
new file mode 100644
index 0000000000..c7e9b5c382
--- /dev/null
+++ b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
@@ -0,0 +1,96 @@
+/** @file
+  Macro and type definitions corresponding to the QEMU fw_cfg interface.
+
+  Refer to "docs/specs/fw_cfg.txt" in the QEMU source directory.
+
+  Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
+  Copyright (C) 2013 - 2017, Red Hat, Inc.
+
+  This program and the accompanying materials are licensed and made available
+  under the terms and conditions of the BSD License which accompanies this
+  distribution. The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#ifndef __FW_CFG_H__
+#define __FW_CFG_H__
+
+#include <Base.h>
+
+//
+// The size, in bytes, of names of firmware configuration files, including at
+// least one terminating NUL byte.
+//
+#define QEMU_FW_CFG_FNAME_SIZE 56
+
+//
+// If the following bit is set in the UINT32 fw_cfg revision / feature bitmap
+// -- read from key 0x0001 with the basic IO Port or MMIO method --, then the
+// DMA interface is available.
+//
+#define FW_CFG_F_DMA BIT1
+
+//
+// Macros for the FW_CFG_DMA_ACCESS.Control bitmap (in native encoding).
+//
+#define FW_CFG_DMA_CTL_ERROR  BIT0
+#define FW_CFG_DMA_CTL_READ   BIT1
+#define FW_CFG_DMA_CTL_SKIP   BIT2
+#define FW_CFG_DMA_CTL_SELECT BIT3
+#define FW_CFG_DMA_CTL_WRITE  BIT4
+
+//
+// Numerically defined keys.
+//
+typedef enum {
+  QemuFwCfgItemSignature            = 0x0000,
+  QemuFwCfgItemInterfaceVersion     = 0x0001,
+  QemuFwCfgItemSystemUuid           = 0x0002,
+  QemuFwCfgItemRamSize              = 0x0003,
+  QemuFwCfgItemGraphicsEnabled      = 0x0004,
+  QemuFwCfgItemSmpCpuCount          = 0x0005,
+  QemuFwCfgItemMachineId            = 0x0006,
+  QemuFwCfgItemKernelAddress        = 0x0007,
+  QemuFwCfgItemKernelSize           = 0x0008,
+  QemuFwCfgItemKernelCommandLine    = 0x0009,
+  QemuFwCfgItemInitrdAddress        = 0x000a,
+  QemuFwCfgItemInitrdSize           = 0x000b,
+  QemuFwCfgItemBootDevice           = 0x000c,
+  QemuFwCfgItemNumaData             = 0x000d,
+  QemuFwCfgItemBootMenu             = 0x000e,
+  QemuFwCfgItemMaximumCpuCount      = 0x000f,
+  QemuFwCfgItemKernelEntry          = 0x0010,
+  QemuFwCfgItemKernelData           = 0x0011,
+  QemuFwCfgItemInitrdData           = 0x0012,
+  QemuFwCfgItemCommandLineAddress   = 0x0013,
+  QemuFwCfgItemCommandLineSize      = 0x0014,
+  QemuFwCfgItemCommandLineData      = 0x0015,
+  QemuFwCfgItemKernelSetupAddress   = 0x0016,
+  QemuFwCfgItemKernelSetupSize      = 0x0017,
+  QemuFwCfgItemKernelSetupData      = 0x0018,
+  QemuFwCfgItemFileDir              = 0x0019,
+
+  QemuFwCfgItemX86AcpiTables        = 0x8000,
+  QemuFwCfgItemX86SmbiosTables      = 0x8001,
+  QemuFwCfgItemX86Irq0Override      = 0x8002,
+  QemuFwCfgItemX86E820Table         = 0x8003,
+  QemuFwCfgItemX86HpetData          = 0x8004,
+
+} FIRMWARE_CONFIG_ITEM;
+
+//
+// Communication structure for the DMA access method. All fields are encoded in
+// big endian.
+//
+#pragma pack (1)
+typedef struct {
+  UINT32 Control;
+  UINT32 Length;
+  UINT64 Address;
+} FW_CFG_DMA_ACCESS;
+#pragma pack ()
+
+#endif