mirror of https://gitee.com/openkylin/linux.git
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
|
|
* 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__ */
|