| /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
| /* |
| * NVRAM definitions and access functions. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #ifndef _UAPI_ASM_POWERPC_NVRAM_H |
| #define _UAPI_ASM_POWERPC_NVRAM_H |
| |
| /* Signatures for nvram partitions */ |
| #define NVRAM_SIG_SP 0x02 /* support processor */ |
| #define NVRAM_SIG_OF 0x50 /* open firmware config */ |
| #define NVRAM_SIG_FW 0x51 /* general firmware */ |
| #define NVRAM_SIG_HW 0x52 /* hardware (VPD) */ |
| #define NVRAM_SIG_FLIP 0x5a /* Apple flip/flop header */ |
| #define NVRAM_SIG_APPL 0x5f /* Apple "system" (???) */ |
| #define NVRAM_SIG_SYS 0x70 /* system env vars */ |
| #define NVRAM_SIG_CFG 0x71 /* config data */ |
| #define NVRAM_SIG_ELOG 0x72 /* error log */ |
| #define NVRAM_SIG_VEND 0x7e /* vendor defined */ |
| #define NVRAM_SIG_FREE 0x7f /* Free space */ |
| #define NVRAM_SIG_OS 0xa0 /* OS defined */ |
| #define NVRAM_SIG_PANIC 0xa1 /* Apple OSX "panic" */ |
| |
| |
| /* PowerMac specific nvram stuffs */ |
| |
| enum { |
| pmac_nvram_OF, /* Open Firmware partition */ |
| pmac_nvram_XPRAM, /* MacOS XPRAM partition */ |
| pmac_nvram_NR /* MacOS Name Registry partition */ |
| }; |
| |
| |
| /* Some offsets in XPRAM */ |
| #define PMAC_XPRAM_MACHINE_LOC 0xe4 |
| #define PMAC_XPRAM_SOUND_VOLUME 0x08 |
| |
| /* Machine location structure in PowerMac XPRAM */ |
| struct pmac_machine_location { |
| unsigned int latitude; /* 2+30 bit Fractional number */ |
| unsigned int longitude; /* 2+30 bit Fractional number */ |
| unsigned int delta; /* mix of GMT delta and DLS */ |
| }; |
| |
| /* |
| * /dev/nvram ioctls |
| * |
| * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is |
| * definitely obsolete. Do not use it if you can avoid it |
| */ |
| |
| #define OBSOLETE_PMAC_NVRAM_GET_OFFSET \ |
| _IOWR('p', 0x40, int) |
| |
| #define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */ |
| #define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */ |
| |
| #endif /* _UAPI_ASM_POWERPC_NVRAM_H */ |
