/* 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 0 x02 /* support processor */
#define NVRAM_SIG_OF 0 x50 /* open firmware config */
#define NVRAM_SIG_FW 0 x51 /* general firmware */
#define NVRAM_SIG_HW 0 x52 /* hardware (VPD) */
#define NVRAM_SIG_FLIP 0 x5a /* Apple flip/flop header */
#define NVRAM_SIG_APPL 0 x5f /* Apple "system" (???) */
#define NVRAM_SIG_SYS 0 x70 /* system env vars */
#define NVRAM_SIG_CFG 0 x71 /* config data */
#define NVRAM_SIG_ELOG 0 x72 /* error log */
#define NVRAM_SIG_VEND 0 x7e /* vendor defined */
#define NVRAM_SIG_FREE 0 x7f /* Free space */
#define NVRAM_SIG_OS 0 xa0 /* OS defined */
#define NVRAM_SIG_PANIC 0 xa1 /* 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 0 xe4
#define PMAC_XPRAM_SOUND_VOLUME 0 x08
/* 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' , 0 x40, int )
#define IOC_NVRAM_GET_OFFSET _IOWR('p' , 0 x42, int ) /* Get NVRAM partition offset */
#define IOC_NVRAM_SYNC _IO('p' , 0 x43) /* Sync NVRAM image */
#endif /* _UAPI_ASM_POWERPC_NVRAM_H */
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