mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
ae7dd0208f
nvram_find_partition() has no user. The call site was removed in the arch/powerpc move, but the function stayed. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/*
|
|
* 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 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);
|
|
|
|
/* Determine NVRAM size */
|
|
extern ssize_t nvram_get_size(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 */
|