Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * PreP compliant NVRAM access | |
3 | * This needs to be updated for PPC64 | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version | |
8 | * 2 of the License, or (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #ifndef _PPC64_NVRAM_H | |
12 | #define _PPC64_NVRAM_H | |
13 | ||
14 | #define NVRW_CNT 0x20 | |
15 | #define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */ | |
16 | #define NVRAM_BLOCK_LEN 16 | |
17 | #define NVRAM_MAX_REQ (2080/NVRAM_BLOCK_LEN) | |
18 | #define NVRAM_MIN_REQ (1056/NVRAM_BLOCK_LEN) | |
19 | ||
20 | #define NVRAM_AS0 0x74 | |
21 | #define NVRAM_AS1 0x75 | |
22 | #define NVRAM_DATA 0x77 | |
23 | ||
24 | ||
25 | /* RTC Offsets */ | |
26 | ||
27 | #define MOTO_RTC_SECONDS 0x1FF9 | |
28 | #define MOTO_RTC_MINUTES 0x1FFA | |
29 | #define MOTO_RTC_HOURS 0x1FFB | |
30 | #define MOTO_RTC_DAY_OF_WEEK 0x1FFC | |
31 | #define MOTO_RTC_DAY_OF_MONTH 0x1FFD | |
32 | #define MOTO_RTC_MONTH 0x1FFE | |
33 | #define MOTO_RTC_YEAR 0x1FFF | |
34 | #define MOTO_RTC_CONTROLA 0x1FF8 | |
35 | #define MOTO_RTC_CONTROLB 0x1FF9 | |
36 | ||
37 | #define NVRAM_SIG_SP 0x02 /* support processor */ | |
38 | #define NVRAM_SIG_OF 0x50 /* open firmware config */ | |
39 | #define NVRAM_SIG_FW 0x51 /* general firmware */ | |
40 | #define NVRAM_SIG_HW 0x52 /* hardware (VPD) */ | |
41 | #define NVRAM_SIG_FLIP 0x5a /* Apple flip/flop header */ | |
42 | #define NVRAM_SIG_APPL 0x5f /* Apple "system" (???) */ | |
43 | #define NVRAM_SIG_SYS 0x70 /* system env vars */ | |
44 | #define NVRAM_SIG_CFG 0x71 /* config data */ | |
45 | #define NVRAM_SIG_ELOG 0x72 /* error log */ | |
46 | #define NVRAM_SIG_VEND 0x7e /* vendor defined */ | |
47 | #define NVRAM_SIG_FREE 0x7f /* Free space */ | |
48 | #define NVRAM_SIG_OS 0xa0 /* OS defined */ | |
49 | #define NVRAM_SIG_PANIC 0xa1 /* Apple OSX "panic" */ | |
50 | ||
51 | /* If change this size, then change the size of NVNAME_LEN */ | |
52 | struct nvram_header { | |
53 | unsigned char signature; | |
54 | unsigned char checksum; | |
55 | unsigned short length; | |
56 | char name[12]; | |
57 | }; | |
58 | ||
59 | struct nvram_partition { | |
60 | struct list_head partition; | |
61 | struct nvram_header header; | |
62 | unsigned int index; | |
63 | }; | |
64 | ||
65 | ||
66 | extern int nvram_write_error_log(char * buff, int length, unsigned int err_type); | |
67 | extern int nvram_read_error_log(char * buff, int length, unsigned int * err_type); | |
68 | extern int nvram_clear_error_log(void); | |
69 | extern struct nvram_partition *nvram_find_partition(int sig, const char *name); | |
70 | ||
71 | extern int pSeries_nvram_init(void); | |
72 | extern int pmac_nvram_init(void); | |
73 | ||
74 | /* PowerMac specific nvram stuffs */ | |
75 | ||
76 | enum { | |
77 | pmac_nvram_OF, /* Open Firmware partition */ | |
78 | pmac_nvram_XPRAM, /* MacOS XPRAM partition */ | |
79 | pmac_nvram_NR /* MacOS Name Registry partition */ | |
80 | }; | |
81 | ||
82 | /* Return partition offset in nvram */ | |
83 | extern int pmac_get_partition(int partition); | |
84 | ||
85 | /* Direct access to XPRAM on PowerMacs */ | |
86 | extern u8 pmac_xpram_read(int xpaddr); | |
87 | extern void pmac_xpram_write(int xpaddr, u8 data); | |
88 | ||
89 | /* Synchronize NVRAM */ | |
90 | extern int nvram_sync(void); | |
91 | ||
92 | /* Some offsets in XPRAM */ | |
93 | #define PMAC_XPRAM_MACHINE_LOC 0xe4 | |
94 | #define PMAC_XPRAM_SOUND_VOLUME 0x08 | |
95 | ||
96 | /* Machine location structure in PowerMac XPRAM */ | |
97 | struct pmac_machine_location { | |
98 | unsigned int latitude; /* 2+30 bit Fractional number */ | |
99 | unsigned int longitude; /* 2+30 bit Fractional number */ | |
100 | unsigned int delta; /* mix of GMT delta and DLS */ | |
101 | }; | |
102 | ||
103 | /* | |
104 | * /dev/nvram ioctls | |
105 | * | |
106 | * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is | |
107 | * definitely obsolete. Do not use it if you can avoid it | |
108 | */ | |
109 | ||
110 | #define OBSOLETE_PMAC_NVRAM_GET_OFFSET \ | |
111 | _IOWR('p', 0x40, int) | |
112 | ||
113 | #define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */ | |
114 | ||
115 | #endif /* _PPC64_NVRAM_H */ |