46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/* Callout/callback interface for Etherboot
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*
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* This file provides the mechanisms for making calls from Etherboot
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* to external programs and vice-versa.
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*
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* Initial version by Michael Brown <mbrown@fensystems.co.uk>, January 2004.
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*
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* $Id$
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*/
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#ifndef CALLBACKS_H
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#define CALLBACKS_H
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/* Opcodes and flags for in_call()
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*/
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#define EB_OPCODE(x) ( (x) & 0xffff )
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#define EB_OPCODE_MAIN (0x0000)
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#define EB_OPCODE_CHECK (0x6948) /* 'Hi' */
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#define EB_OPCODE_PXE (0x7850) /* 'Px' */
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#define EB_OPCODE_PXENV (0x7650) /* 'Pv' */
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#define EB_USE_INTERNAL_STACK ( 1 << 16 )
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#define EB_CALL_FROM_REAL_MODE ( 1 << 17 ) /* i386 only */
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#define EB_SKIP_OPCODE ( 1 << 18 )
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/* Standard return codes
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*/
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#define EB_CHECK_RESULT (0x6f486948) /* 'HiHo' */
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/* Include arch-specific callbacks bits
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*/
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#include "callbacks_arch.h"
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/* Skip the definitions that won't make sense to the assembler */
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#ifndef ASSEMBLY
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#include <stdarg.h>
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#ifndef in_call_data_t
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typedef struct {} empty_struct_t;
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#define in_call_data_t empty_struct_t
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#endif
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#endif /* ASSEMBLY */
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#endif /* CALLBACKS_H */
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