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/** @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
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