| 1 | /** @file
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| 2 | Macro and type definitions corresponding to the QEMU fw_cfg interface.
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| 3 |
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| 4 | Refer to "docs/specs/fw_cfg.txt" in the QEMU source directory.
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| 5 |
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| 6 | Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
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| 7 | Copyright (C) 2013 - 2017, Red Hat, Inc.
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| 8 |
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| 9 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 10 | **/
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| 11 |
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| 12 | #ifndef __FW_CFG_H__
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| 13 | #define __FW_CFG_H__
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| 14 |
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| 15 | #include <Base.h>
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| 16 |
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| 17 | //
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| 18 | // The size, in bytes, of names of firmware configuration files, including at
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| 19 | // least one terminating NUL byte.
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| 20 | //
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| 21 | #define QEMU_FW_CFG_FNAME_SIZE 56
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| 22 |
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| 23 | //
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| 24 | // If the following bit is set in the UINT32 fw_cfg revision / feature bitmap
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| 25 | // -- read from key 0x0001 with the basic IO Port or MMIO method --, then the
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| 26 | // DMA interface is available.
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| 27 | //
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| 28 | #define FW_CFG_F_DMA BIT1
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| 29 |
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| 30 | //
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| 31 | // Macros for the FW_CFG_DMA_ACCESS.Control bitmap (in native encoding).
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| 32 | //
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| 33 | #define FW_CFG_DMA_CTL_ERROR BIT0
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| 34 | #define FW_CFG_DMA_CTL_READ BIT1
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| 35 | #define FW_CFG_DMA_CTL_SKIP BIT2
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| 36 | #define FW_CFG_DMA_CTL_SELECT BIT3
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| 37 | #define FW_CFG_DMA_CTL_WRITE BIT4
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| 38 |
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| 39 | //
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| 40 | // The fw_cfg registers can be found at these IO Ports, on the IO-mapped
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| 41 | // platforms (Ia32 and X64).
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| 42 | //
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| 43 | #define FW_CFG_IO_SELECTOR 0x510
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| 44 | #define FW_CFG_IO_DATA 0x511
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| 45 | #define FW_CFG_IO_DMA_ADDRESS 0x514
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| 46 |
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| 47 | //
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| 48 | // Numerically defined keys.
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| 49 | //
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| 50 | typedef enum {
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| 51 | QemuFwCfgItemSignature = 0x0000,
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| 52 | QemuFwCfgItemInterfaceVersion = 0x0001,
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| 53 | QemuFwCfgItemSystemUuid = 0x0002,
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| 54 | QemuFwCfgItemRamSize = 0x0003,
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| 55 | QemuFwCfgItemGraphicsEnabled = 0x0004,
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| 56 | QemuFwCfgItemSmpCpuCount = 0x0005,
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| 57 | QemuFwCfgItemMachineId = 0x0006,
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| 58 | QemuFwCfgItemKernelAddress = 0x0007,
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| 59 | QemuFwCfgItemKernelSize = 0x0008,
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| 60 | QemuFwCfgItemKernelCommandLine = 0x0009,
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| 61 | QemuFwCfgItemInitrdAddress = 0x000a,
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| 62 | QemuFwCfgItemInitrdSize = 0x000b,
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| 63 | QemuFwCfgItemBootDevice = 0x000c,
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| 64 | QemuFwCfgItemNumaData = 0x000d,
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| 65 | QemuFwCfgItemBootMenu = 0x000e,
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| 66 | QemuFwCfgItemMaximumCpuCount = 0x000f,
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| 67 | QemuFwCfgItemKernelEntry = 0x0010,
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| 68 | QemuFwCfgItemKernelData = 0x0011,
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| 69 | QemuFwCfgItemInitrdData = 0x0012,
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| 70 | QemuFwCfgItemCommandLineAddress = 0x0013,
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| 71 | QemuFwCfgItemCommandLineSize = 0x0014,
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| 72 | QemuFwCfgItemCommandLineData = 0x0015,
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| 73 | QemuFwCfgItemKernelSetupAddress = 0x0016,
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| 74 | QemuFwCfgItemKernelSetupSize = 0x0017,
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| 75 | QemuFwCfgItemKernelSetupData = 0x0018,
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| 76 | QemuFwCfgItemFileDir = 0x0019,
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| 77 |
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| 78 | QemuFwCfgItemX86AcpiTables = 0x8000,
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| 79 | QemuFwCfgItemX86SmbiosTables = 0x8001,
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| 80 | QemuFwCfgItemX86Irq0Override = 0x8002,
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| 81 | QemuFwCfgItemX86E820Table = 0x8003,
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| 82 | QemuFwCfgItemX86HpetData = 0x8004,
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| 83 | } FIRMWARE_CONFIG_ITEM;
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| 84 |
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| 85 | //
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| 86 | // Communication structure for the DMA access method. All fields are encoded in
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| 87 | // big endian.
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| 88 | //
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| 89 | #pragma pack (1)
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| 90 | typedef struct {
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| 91 | UINT32 Control;
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| 92 | UINT32 Length;
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| 93 | UINT64 Address;
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| 94 | } FW_CFG_DMA_ACCESS;
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| 95 | #pragma pack ()
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| 96 |
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| 97 | #endif
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