| /* |
| * PreP compliant NVRAM access |
| */ |
| |
| #ifdef __KERNEL__ |
| #ifndef _PPC_NVRAM_H |
| #define _PPC_NVRAM_H |
| |
| #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 |
| |
| /* PowerMac specific nvram stuffs */ |
| |
| enum { |
| pmac_nvram_OF, /* Open Firmware partition */ |
| pmac_nvram_XPRAM, /* MacOS XPRAM partition */ |
| pmac_nvram_NR /* MacOS Name Registry partition */ |
| }; |
| |
| /* 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); |
| |
| /* 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 |
| #endif /* __KERNEL__ */ |