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- /*
- * Definitions for talking to the Open Firmware PROM on
- * Power Macintosh computers.
- *
- * Copyright (C) 1996 Paul Mackerras.
- */
- #ifdef __KERNEL__
- #ifndef _PPC_PROM_H
- #define _PPC_PROM_H
- /* This is used in arch/ppc/mm/mem_pieces.h */
- struct reg_property {
- unsigned int address;
- unsigned int size;
- };
- /*
- * These macros assist in performing the address calculations that we
- * need to do to access data when the kernel is running at an address
- * that is different from the address that the kernel is linked at.
- * The reloc_offset() function returns the difference between these
- * two addresses and the macros simplify the process of adding or
- * subtracting this offset to/from pointer values.
- */
- extern unsigned long reloc_offset(void);
- extern unsigned long add_reloc_offset(unsigned long);
- extern unsigned long sub_reloc_offset(unsigned long);
- #define PTRRELOC(x) ((typeof(x))add_reloc_offset((unsigned long)(x)))
- #define PTRUNRELOC(x) ((typeof(x))sub_reloc_offset((unsigned long)(x)))
- /*
- * Fallback definitions since we don't support OF in arch/ppc any more.
- */
- #define machine_is_compatible(x) 0
- #define of_find_compatible_node(f, t, c) NULL
- #define get_property(p, n, l) NULL
- #endif /* _PPC_PROM_H */
- #endif /* __KERNEL__ */
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