| David Howells | c3617f7 | 2012-10-09 09:47:26 +0100 | [diff] [blame] | 1 | /* |
| 2 | * NVRAM definitions and access functions. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _UAPI_ASM_POWERPC_NVRAM_H |
| 11 | #define _UAPI_ASM_POWERPC_NVRAM_H |
| 12 | |
| 13 | /* Signatures for nvram partitions */ |
| 14 | #define NVRAM_SIG_SP 0x02 /* support processor */ |
| 15 | #define NVRAM_SIG_OF 0x50 /* open firmware config */ |
| 16 | #define NVRAM_SIG_FW 0x51 /* general firmware */ |
| 17 | #define NVRAM_SIG_HW 0x52 /* hardware (VPD) */ |
| 18 | #define NVRAM_SIG_FLIP 0x5a /* Apple flip/flop header */ |
| 19 | #define NVRAM_SIG_APPL 0x5f /* Apple "system" (???) */ |
| 20 | #define NVRAM_SIG_SYS 0x70 /* system env vars */ |
| 21 | #define NVRAM_SIG_CFG 0x71 /* config data */ |
| 22 | #define NVRAM_SIG_ELOG 0x72 /* error log */ |
| 23 | #define NVRAM_SIG_VEND 0x7e /* vendor defined */ |
| 24 | #define NVRAM_SIG_FREE 0x7f /* Free space */ |
| 25 | #define NVRAM_SIG_OS 0xa0 /* OS defined */ |
| 26 | #define NVRAM_SIG_PANIC 0xa1 /* Apple OSX "panic" */ |
| 27 | |
| 28 | |
| 29 | /* PowerMac specific nvram stuffs */ |
| 30 | |
| 31 | enum { |
| 32 | pmac_nvram_OF, /* Open Firmware partition */ |
| 33 | pmac_nvram_XPRAM, /* MacOS XPRAM partition */ |
| 34 | pmac_nvram_NR /* MacOS Name Registry partition */ |
| 35 | }; |
| 36 | |
| 37 | |
| 38 | /* Some offsets in XPRAM */ |
| 39 | #define PMAC_XPRAM_MACHINE_LOC 0xe4 |
| 40 | #define PMAC_XPRAM_SOUND_VOLUME 0x08 |
| 41 | |
| 42 | /* Machine location structure in PowerMac XPRAM */ |
| 43 | struct pmac_machine_location { |
| 44 | unsigned int latitude; /* 2+30 bit Fractional number */ |
| 45 | unsigned int longitude; /* 2+30 bit Fractional number */ |
| 46 | unsigned int delta; /* mix of GMT delta and DLS */ |
| 47 | }; |
| 48 | |
| 49 | /* |
| 50 | * /dev/nvram ioctls |
| 51 | * |
| 52 | * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is |
| 53 | * definitely obsolete. Do not use it if you can avoid it |
| 54 | */ |
| 55 | |
| 56 | #define OBSOLETE_PMAC_NVRAM_GET_OFFSET \ |
| 57 | _IOWR('p', 0x40, int) |
| 58 | |
| 59 | #define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */ |
| 60 | #define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */ |
| 61 | |
| 62 | #endif /* _UAPI_ASM_POWERPC_NVRAM_H */ |