Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Definitions for talking to the Open Firmware PROM on | |
3 | * Power Macintosh computers. | |
4 | * | |
5 | * Copyright (C) 1996 Paul Mackerras. | |
6 | */ | |
7 | #ifdef __KERNEL__ | |
8 | #ifndef _PPC_PROM_H | |
9 | #define _PPC_PROM_H | |
10 | ||
0a26b136 | 11 | /* This is used in arch/ppc/mm/mem_pieces.h */ |
1da177e4 LT |
12 | struct reg_property { |
13 | unsigned int address; | |
14 | unsigned int size; | |
15 | }; | |
16 | ||
1da177e4 | 17 | /* |
0a26b136 PM |
18 | * These macros assist in performing the address calculations that we |
19 | * need to do to access data when the kernel is running at an address | |
20 | * that is different from the address that the kernel is linked at. | |
21 | * The reloc_offset() function returns the difference between these | |
22 | * two addresses and the macros simplify the process of adding or | |
23 | * subtracting this offset to/from pointer values. | |
1da177e4 LT |
24 | */ |
25 | extern unsigned long reloc_offset(void); | |
26 | extern unsigned long add_reloc_offset(unsigned long); | |
27 | extern unsigned long sub_reloc_offset(unsigned long); | |
28 | ||
29 | #define PTRRELOC(x) ((typeof(x))add_reloc_offset((unsigned long)(x))) | |
30 | #define PTRUNRELOC(x) ((typeof(x))sub_reloc_offset((unsigned long)(x))) | |
31 | ||
a7fdd90b | 32 | /* |
0a26b136 | 33 | * Fallback definitions since we don't support OF in arch/ppc any more. |
a7fdd90b PM |
34 | */ |
35 | #define machine_is_compatible(x) 0 | |
36 | #define of_find_compatible_node(f, t, c) NULL | |
0e56efc7 | 37 | #define of_get_property(p, n, l) NULL |
d1405b86 | 38 | |
1da177e4 LT |
39 | #endif /* _PPC_PROM_H */ |
40 | #endif /* __KERNEL__ */ |