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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2726 | vana | 1 | /*++ |
| 2 | |||
| 3 | Copyright (c) 1999 Intel Corporation |
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| 4 | |||
| 5 | Module Name: |
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| 6 | |||
| 7 | legacyboot |
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| 8 | |||
| 9 | Abstract: |
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| 10 | |||
| 11 | EFI support for legacy boot |
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| 12 | |||
| 13 | |||
| 14 | |||
| 15 | Revision History |
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| 16 | |||
| 17 | --*/ |
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| 18 | |||
| 19 | #ifndef _LEGACY_BOOT_INCLUDE_ |
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| 20 | #define _LEGACY_BOOT_INCLUDE_ |
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| 21 | |||
| 22 | #define LEGACY_BOOT_PROTOCOL \ |
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| 23 | { 0x376e5eb2, 0x30e4, 0x11d3, { 0xba, 0xe5, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } } |
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| 24 | |||
| 25 | #pragma pack(1) |
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| 26 | |||
| 27 | // |
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| 28 | // BBS 1.01 (See Appendix A) IPL and BCV Table Entry Data structure. |
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| 29 | // Seg:Off pointers have been converted to EFI pointers in this data structure |
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| 30 | // This is the structure that also maps to the EFI device path for the boot selection |
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| 31 | // |
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| 32 | typedef struct { |
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| 33 | UINT16 DeviceType; |
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| 34 | UINT16 StatusFlag; |
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| 35 | UINT32 Reserved; |
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| 36 | VOID *BootHandler; // Not an EFI entry point |
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| 37 | CHAR8 *DescString; |
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| 38 | } BBS_TABLE_ENTRY; |
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| 39 | #pragma pack() |
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| 40 | |||
| 41 | typedef |
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| 42 | EFI_STATUS |
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| 43 | (EFIAPI *LEGACY_BOOT_CALL) ( |
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| 44 | IN EFI_DEVICE_PATH *DevicePath |
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| 45 | ); |
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| 46 | |||
| 47 | |||
| 48 | // |
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| 49 | // BBS support functions |
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| 50 | // PnP Call numbers and BiosSelector hidden in implementation |
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| 51 | // |
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| 52 | |||
| 53 | typedef enum { |
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| 54 | IplRelative, |
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| 55 | BcvRelative |
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| 56 | } BBS_TYPE; |
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| 57 | |||
| 58 | INTERFACE_DECL(_LEGACY_BOOT_INTERFACE); |
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| 59 | |||
| 60 | // |
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| 61 | // == PnP Function 0x60 then BbsVersion == 0x0101 if this call fails then BbsVersion == 0x0000 |
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| 62 | // |
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| 63 | |||
| 64 | // |
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| 65 | // == PnP Function 0x61 |
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| 66 | // |
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| 67 | typedef |
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| 68 | EFI_STATUS |
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| 69 | (EFIAPI *GET_DEVICE_COUNT) ( |
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| 70 | IN struct _LEGACY_BOOT_INTERFACE *This, |
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| 71 | IN BBS_TYPE *TableType, |
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| 72 | OUT UINTN *DeviceCount, |
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| 73 | OUT UINTN *MaxCount |
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| 74 | ); |
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| 75 | |||
| 76 | // |
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| 77 | // == PnP Function 0x62 |
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| 78 | // |
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| 79 | typedef |
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| 80 | EFI_STATUS |
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| 81 | (EFIAPI *GET_PRIORITY_AND_TABLE) ( |
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| 82 | IN struct _LEGACY_BOOT_INTERFACE *This, |
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| 83 | IN BBS_TYPE *TableType, |
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| 84 | IN OUT UINTN *PrioritySize, // MaxCount * sizeof(UINT8) |
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| 85 | OUT UINTN *Priority, |
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| 86 | IN OUT UINTN *TableSize, // MaxCount * sizeof(BBS_TABLE_ENTRY) |
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| 87 | OUT BBS_TABLE_ENTRY *TableEntrySize |
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| 88 | ); |
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| 89 | |||
| 90 | // |
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| 91 | // == PnP Function 0x63 |
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| 92 | // |
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| 93 | typedef |
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| 94 | EFI_STATUS |
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| 95 | (EFIAPI *SET_PRIORITY) ( |
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| 96 | IN struct _LEGACY_BOOT_INTERFACE *This, |
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| 97 | IN BBS_TYPE *TableType, |
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| 98 | IN OUT UINTN *PrioritySize, |
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| 99 | OUT UINTN *Priority |
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| 100 | ); |
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| 101 | |||
| 102 | typedef struct _LEGACY_BOOT_INTERFACE { |
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| 103 | LEGACY_BOOT_CALL BootIt; |
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| 104 | |||
| 105 | // |
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| 106 | // New functions to allow BBS booting to be configured from EFI |
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| 107 | // |
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| 108 | UINTN BbsVersion; // Currently 0x0101 |
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| 109 | GET_DEVICE_COUNT GetDeviceCount; |
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| 110 | GET_PRIORITY_AND_TABLE GetPriorityAndTable; |
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| 111 | SET_PRIORITY SetPriority; |
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| 112 | } LEGACY_BOOT_INTERFACE; |
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| 113 | |||
| 114 | EFI_STATUS |
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| 115 | PlInitializeLegacyBoot ( |
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| 116 | VOID |
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| 117 | ); |
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| 118 | |||
| 119 | #endif |