projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); | |
| 5f5b4e66 | 73 | extern int bpa_nvram_init(void); |
| 1da177e4 LT |
74 | |
| 75 | /* PowerMac specific nvram stuffs */ | |
| 76 | ||
| 77 | enum { | |
| 78 | pmac_nvram_OF, /* Open Firmware partition */ | |
| 79 | pmac_nvram_XPRAM, /* MacOS XPRAM partition */ | |
| 80 | pmac_nvram_NR /* MacOS Name Registry partition */ | |
| 81 | }; | |
| 82 | ||
| 83 | /* Return partition offset in nvram */ | |
| 84 | extern int pmac_get_partition(int partition); | |
| 85 | ||
| 86 | /* Direct access to XPRAM on PowerMacs */ | |
| 87 | extern u8 pmac_xpram_read(int xpaddr); | |
| 88 | extern void pmac_xpram_write(int xpaddr, u8 data); | |
| 89 | ||
| 90 | /* Synchronize NVRAM */ | |
| 91 | extern int nvram_sync(void); | |
| 92 | ||
| 93 | /* Some offsets in XPRAM */ | |
| 94 | #define PMAC_XPRAM_MACHINE_LOC 0xe4 | |
| 95 | #define PMAC_XPRAM_SOUND_VOLUME 0x08 | |
| 96 | ||
| 97 | /* Machine location structure in PowerMac XPRAM */ | |
| 98 | struct pmac_machine_location { | |
| 99 | unsigned int latitude; /* 2+30 bit Fractional number */ | |
| 100 | unsigned int longitude; /* 2+30 bit Fractional number */ | |
| 101 | unsigned int delta; /* mix of GMT delta and DLS */ | |
| 102 | }; | |
| 103 | ||
| 104 | /* | |
| 105 | * /dev/nvram ioctls | |
| 106 | * | |
| 107 | * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is | |
| 108 | * definitely obsolete. Do not use it if you can avoid it | |
| 109 | */ | |
| 110 | ||
| 111 | #define OBSOLETE_PMAC_NVRAM_GET_OFFSET \ | |
| 112 | _IOWR('p', 0x40, int) | |
| 113 | ||
| 114 | #define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */ | |
| 115 | ||
| 116 | #endif /* _PPC64_NVRAM_H */ |