/* * 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 _ASM_POWERPC_NVRAM_H #define _ASM_POWERPC_NVRAM_H #include <linux/errno.h> #define NVRW_CNT 0x20 #define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */ #define NVRAM_BLOCK_LEN 16 #define NVRAM_MAX_REQ (2080/NVRAM_BLOCK_LEN) #define NVRAM_MIN_REQ (1056/NVRAM_BLOCK_LEN) #define NVRAM_AS0 0x74 #define NVRAM_AS1 0x75 #define NVRAM_DATA 0x77 /* RTC Offsets */ #define MOTO_RTC_SECONDS 0x1FF9 #define MOTO_RTC_MINUTES 0x1FFA #define MOTO_RTC_HOURS 0x1FFB #define MOTO_RTC_DAY_OF_WEEK 0x1FFC #define MOTO_RTC_DAY_OF_MONTH 0x1FFD #define MOTO_RTC_MONTH 0x1FFE #define MOTO_RTC_YEAR 0x1FFF #define MOTO_RTC_CONTROLA 0x1FF8 #define MOTO_RTC_CONTROLB 0x1FF9 #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" */ /* If change this size, then change the size of NVNAME_LEN */ struct nvram_header { unsigned char signature; unsigned char checksum; unsigned short length; char name[12]; }; #ifdef __KERNEL__ #include <linux/list.h> struct nvram_partition { struct list_head partition; struct nvram_header header; unsigned int index; }; extern int nvram_write_error_log(char * buff, int length, unsigned int err_type, unsigned int err_seq); extern int nvram_read_error_log(char * buff, int length, unsigned int * err_type, unsigned int *err_seq); extern int nvram_clear_error_log(void); extern struct nvram_partition *nvram_find_partition(int sig, const char *name); extern int pSeries_nvram_init(void); #ifdef CONFIG_MMIO_NVRAM extern int mmio_nvram_init(void); #else static inline int mmio_nvram_init(void) { return -ENODEV; } #endif #endif /* __KERNEL__ */ /* PowerMac specific nvram stuffs */ enum { pmac_nvram_OF, /* Open Firmware partition */ pmac_nvram_XPRAM, /* MacOS XPRAM partition */ pmac_nvram_NR /* MacOS Name Registry partition */ }; #ifdef __KERNEL__ /* Return partition offset in nvram */ extern int pmac_get_partition(int partition); /* Direct access to XPRAM on PowerMacs */ extern u8 pmac_xpram_read(int xpaddr); extern void pmac_xpram_write(int xpaddr, u8 data); /* Synchronize NVRAM */ extern void nvram_sync(void); /* Normal access to NVRAM */ extern unsigned char nvram_read_byte(int i); extern void nvram_write_byte(unsigned char c, int i); #endif /* 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 /* _ASM_POWERPC_NVRAM_H */