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| 1 | /* Callout/callback interface for Etherboot
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| 2 | *
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| 3 | * This file provides the mechanisms for making calls from Etherboot
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| 4 | * to external programs and vice-versa.
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| 5 | *
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| 6 | * Initial version by Michael Brown <[email protected]>, January 2004.
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| 7 | *
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| 8 | * $Id: callbacks.h 1 1970-01-01 00:00:00Z vboxsync $
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| 9 | */
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| 10 |
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| 11 | #ifndef CALLBACKS_H
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| 12 | #define CALLBACKS_H
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| 13 |
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| 14 | /* Opcodes and flags for in_call()
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| 15 | */
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| 16 | #define EB_OPCODE(x) ( (x) & 0xffff )
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| 17 | #define EB_OPCODE_MAIN (0x0000)
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| 18 | #define EB_OPCODE_CHECK (0x6948) /* 'Hi' */
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| 19 | #define EB_OPCODE_PXE (0x7850) /* 'Px' */
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| 20 | #define EB_OPCODE_PXENV (0x7650) /* 'Pv' */
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| 21 | #define EB_USE_INTERNAL_STACK ( 1 << 16 )
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| 22 | #define EB_CALL_FROM_REAL_MODE ( 1 << 17 ) /* i386 only */
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| 23 | #define EB_SKIP_OPCODE ( 1 << 18 )
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| 24 |
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| 25 | /* Standard return codes
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| 26 | */
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| 27 | #define EB_CHECK_RESULT (0x6f486948) /* 'HiHo' */
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| 28 |
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| 29 | /* Include arch-specific callbacks bits
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| 30 | */
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| 31 | #include "callbacks_arch.h"
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| 32 |
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| 33 | /* Skip the definitions that won't make sense to the assembler */
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| 34 | #ifndef ASSEMBLY
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| 35 |
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| 36 | #include <stdarg.h>
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| 37 |
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| 38 | #ifndef in_call_data_t
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| 39 | typedef struct {} empty_struct_t;
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| 40 | #define in_call_data_t empty_struct_t
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| 41 | #endif
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| 42 |
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| 43 | #endif /* ASSEMBLY */
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| 44 |
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| 45 | #endif /* CALLBACKS_H */
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