/* 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 */