cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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nvram.h (2077B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      2/*
      3 * NVRAM definitions and access functions.
      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 _UAPI_ASM_POWERPC_NVRAM_H
     12#define _UAPI_ASM_POWERPC_NVRAM_H
     13
     14/* Signatures for nvram partitions */
     15#define NVRAM_SIG_SP	0x02	/* support processor */
     16#define NVRAM_SIG_OF	0x50	/* open firmware config */
     17#define NVRAM_SIG_FW	0x51	/* general firmware */
     18#define NVRAM_SIG_HW	0x52	/* hardware (VPD) */
     19#define NVRAM_SIG_FLIP	0x5a	/* Apple flip/flop header */
     20#define NVRAM_SIG_APPL	0x5f	/* Apple "system" (???) */
     21#define NVRAM_SIG_SYS	0x70	/* system env vars */
     22#define NVRAM_SIG_CFG	0x71	/* config data */
     23#define NVRAM_SIG_ELOG	0x72	/* error log */
     24#define NVRAM_SIG_VEND	0x7e	/* vendor defined */
     25#define NVRAM_SIG_FREE	0x7f	/* Free space */
     26#define NVRAM_SIG_OS	0xa0	/* OS defined */
     27#define NVRAM_SIG_PANIC	0xa1	/* Apple OSX "panic" */
     28
     29
     30/* PowerMac specific nvram stuffs */
     31
     32enum {
     33	pmac_nvram_OF,		/* Open Firmware partition */
     34	pmac_nvram_XPRAM,	/* MacOS XPRAM partition */
     35	pmac_nvram_NR		/* MacOS Name Registry partition */
     36};
     37
     38
     39/* Some offsets in XPRAM */
     40#define PMAC_XPRAM_MACHINE_LOC	0xe4
     41#define PMAC_XPRAM_SOUND_VOLUME	0x08
     42
     43/* Machine location structure in PowerMac XPRAM */
     44struct pmac_machine_location {
     45	unsigned int	latitude;	/* 2+30 bit Fractional number */
     46	unsigned int	longitude;	/* 2+30 bit Fractional number */
     47	unsigned int	delta;		/* mix of GMT delta and DLS */
     48};
     49
     50/*
     51 * /dev/nvram ioctls
     52 *
     53 * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
     54 * definitely obsolete. Do not use it if you can avoid it
     55 */
     56
     57#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
     58				_IOWR('p', 0x40, int)
     59
     60#define IOC_NVRAM_GET_OFFSET	_IOWR('p', 0x42, int)	/* Get NVRAM partition offset */
     61#define IOC_NVRAM_SYNC		_IO('p', 0x43)		/* Sync NVRAM image */
     62
     63#endif /* _UAPI_ASM_POWERPC_NVRAM_H */