Initial revision

1 files changed, 45 insertions, 0 deletions

diff --git a/src/include/callbacks.h b/src/include/callbacks.h
new file mode 100644
index 000000000..2a7547850
--- /dev/null
+++ b/src/include/callbacks.h
@@ -0,0 +1,45 @@
+/* Callout/callback interface for Etherboot
+ *
+ * This file provides the mechanisms for making calls from Etherboot
+ * to external programs and vice-versa.
+ *
+ * Initial version by Michael Brown <mbrown@fensystems.co.uk>, January 2004.
+ *
+ * $Id$
+ */
+
+#ifndef CALLBACKS_H
+#define CALLBACKS_H
+
+/* Opcodes and flags for in_call()
+ */
+#define EB_OPCODE(x) ( (x) & 0xffff )
+#define EB_OPCODE_MAIN		(0x0000)
+#define EB_OPCODE_CHECK		(0x6948)	/* 'Hi' */
+#define EB_OPCODE_PXE		(0x7850)	/* 'Px' */
+#define EB_OPCODE_PXENV		(0x7650)	/* 'Pv' */
+#define EB_USE_INTERNAL_STACK	( 1 << 16 )
+#define EB_CALL_FROM_REAL_MODE	( 1 << 17 )	/* i386 only */
+#define EB_SKIP_OPCODE		( 1 << 18 )
+
+/* Standard return codes
+ */
+#define EB_CHECK_RESULT		(0x6f486948)	/* 'HiHo' */
+
+/* Include arch-specific callbacks bits
+ */
+#include "callbacks_arch.h"
+
+/* Skip the definitions that won't make sense to the assembler */
+#ifndef ASSEMBLY
+
+#include <stdarg.h>
+
+#ifndef in_call_data_t
+typedef struct {} empty_struct_t;
+#define in_call_data_t empty_struct_t
+#endif
+
+#endif /* ASSEMBLY */
+
+#endif /* CALLBACKS_H */