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Diffstat (limited to 'efi64/include/efi/protocol/legacyboot.h')
-rw-r--r-- | efi64/include/efi/protocol/legacyboot.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/efi64/include/efi/protocol/legacyboot.h b/efi64/include/efi/protocol/legacyboot.h new file mode 100644 index 0000000..16e94e7 --- /dev/null +++ b/efi64/include/efi/protocol/legacyboot.h @@ -0,0 +1,119 @@ +/*++ + +Copyright (c) 1999 Intel Corporation + +Module Name: + + legacyboot + +Abstract: + + EFI support for legacy boot + + + +Revision History + +--*/ + +#ifndef _LEGACY_BOOT_INCLUDE_ +#define _LEGACY_BOOT_INCLUDE_ + +#define LEGACY_BOOT_PROTOCOL \ + { 0x376e5eb2, 0x30e4, 0x11d3, { 0xba, 0xe5, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } } + +#pragma pack(1) + +// +// BBS 1.01 (See Appendix A) IPL and BCV Table Entry Data structure. +// Seg:Off pointers have been converted to EFI pointers in this data structure +// This is the structure that also maps to the EFI device path for the boot selection +// +typedef struct { + UINT16 DeviceType; + UINT16 StatusFlag; + UINT32 Reserved; + VOID *BootHandler; // Not an EFI entry point + CHAR8 *DescString; +} BBS_TABLE_ENTRY; +#pragma pack() + +typedef +EFI_STATUS +(EFIAPI *LEGACY_BOOT_CALL) ( + IN EFI_DEVICE_PATH *DevicePath + ); + + +// +// BBS support functions +// PnP Call numbers and BiosSelector hidden in implementation +// + +typedef enum { + IplRelative, + BcvRelative +} BBS_TYPE; + +INTERFACE_DECL(_LEGACY_BOOT_INTERFACE); + +// +// == PnP Function 0x60 then BbsVersion == 0x0101 if this call fails then BbsVersion == 0x0000 +// + +// +// == PnP Function 0x61 +// +typedef +EFI_STATUS +(EFIAPI *GET_DEVICE_COUNT) ( + IN struct _LEGACY_BOOT_INTERFACE *This, + IN BBS_TYPE *TableType, + OUT UINTN *DeviceCount, + OUT UINTN *MaxCount + ); + +// +// == PnP Function 0x62 +// +typedef +EFI_STATUS +(EFIAPI *GET_PRIORITY_AND_TABLE) ( + IN struct _LEGACY_BOOT_INTERFACE *This, + IN BBS_TYPE *TableType, + IN OUT UINTN *PrioritySize, // MaxCount * sizeof(UINT8) + OUT UINTN *Priority, + IN OUT UINTN *TableSize, // MaxCount * sizeof(BBS_TABLE_ENTRY) + OUT BBS_TABLE_ENTRY *TableEntrySize + ); + +// +// == PnP Function 0x63 +// +typedef +EFI_STATUS +(EFIAPI *SET_PRIORITY) ( + IN struct _LEGACY_BOOT_INTERFACE *This, + IN BBS_TYPE *TableType, + IN OUT UINTN *PrioritySize, + OUT UINTN *Priority + ); + +typedef struct _LEGACY_BOOT_INTERFACE { + LEGACY_BOOT_CALL BootIt; + + // + // New functions to allow BBS booting to be configured from EFI + // + UINTN BbsVersion; // Currently 0x0101 + GET_DEVICE_COUNT GetDeviceCount; + GET_PRIORITY_AND_TABLE GetPriorityAndTable; + SET_PRIORITY SetPriority; +} LEGACY_BOOT_INTERFACE; + +EFI_STATUS +PlInitializeLegacyBoot ( + VOID + ); + +#endif |