[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-powerpc / nvram.h

/*
 * 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 */
Commit	Line	Data
1da177e4	1	/*
c55377ee	2	* NVRAM definitions and access functions.
1da177e4 LT	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*/
	9
c55377ee PM	10	#ifndef _ASM_POWERPC_NVRAM_H
c55377ee PM	11	#define _ASM_POWERPC_NVRAM_H
1da177e4	12
4751505c IK	13	#include <linux/errno.h>
4751505c IK	14
1da177e4 LT	15	#define NVRW_CNT 0x20
	16	#define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */
	17	#define NVRAM_BLOCK_LEN 16
	18	#define NVRAM_MAX_REQ (2080/NVRAM_BLOCK_LEN)
	19	#define NVRAM_MIN_REQ (1056/NVRAM_BLOCK_LEN)
	20
	21	#define NVRAM_AS0 0x74
	22	#define NVRAM_AS1 0x75
	23	#define NVRAM_DATA 0x77
	24
	25
	26	/* RTC Offsets */
	27
	28	#define MOTO_RTC_SECONDS 0x1FF9
	29	#define MOTO_RTC_MINUTES 0x1FFA
	30	#define MOTO_RTC_HOURS 0x1FFB
	31	#define MOTO_RTC_DAY_OF_WEEK 0x1FFC
	32	#define MOTO_RTC_DAY_OF_MONTH 0x1FFD
	33	#define MOTO_RTC_MONTH 0x1FFE
	34	#define MOTO_RTC_YEAR 0x1FFF
	35	#define MOTO_RTC_CONTROLA 0x1FF8
	36	#define MOTO_RTC_CONTROLB 0x1FF9
	37
	38	#define NVRAM_SIG_SP 0x02 /* support processor */
	39	#define NVRAM_SIG_OF 0x50 /* open firmware config */
	40	#define NVRAM_SIG_FW 0x51 /* general firmware */
	41	#define NVRAM_SIG_HW 0x52 /* hardware (VPD) */
	42	#define NVRAM_SIG_FLIP 0x5a /* Apple flip/flop header */
	43	#define NVRAM_SIG_APPL 0x5f /* Apple "system" (???) */
	44	#define NVRAM_SIG_SYS 0x70 /* system env vars */
	45	#define NVRAM_SIG_CFG 0x71 /* config data */
	46	#define NVRAM_SIG_ELOG 0x72 /* error log */
	47	#define NVRAM_SIG_VEND 0x7e /* vendor defined */
	48	#define NVRAM_SIG_FREE 0x7f /* Free space */
	49	#define NVRAM_SIG_OS 0xa0 /* OS defined */
	50	#define NVRAM_SIG_PANIC 0xa1 /* Apple OSX "panic" */
	51
	52	/* If change this size, then change the size of NVNAME_LEN */
	53	struct nvram_header {
	54	unsigned char signature;
	55	unsigned char checksum;
	56	unsigned short length;
	57	char name[12];
	58	};
	59
88ced031	60	#ifdef __KERNEL__
134d4956 AM	61
	62	#include <linux/list.h>
	63
1da177e4 LT	64	struct nvram_partition {
	65	struct list_head partition;
	66	struct nvram_header header;
	67	unsigned int index;
	68	};
	69
	70
0f2342c8 LV	71	extern int nvram_write_error_log(char * buff, int length,
	72	unsigned int err_type, unsigned int err_seq);
	73	extern int nvram_read_error_log(char * buff, int length,
	74	unsigned int * err_type, unsigned int *err_seq);
1da177e4 LT	75	extern int nvram_clear_error_log(void);
	76	extern struct nvram_partition nvram_find_partition(int sig, const char name);
	77
	78	extern int pSeries_nvram_init(void);
4751505c IK	79
4751505c IK	80	#ifdef CONFIG_MMIO_NVRAM
f3f66f59	81	extern int mmio_nvram_init(void);
4751505c IK	82	#else
	83	static inline int mmio_nvram_init(void)
	84	{
	85	return -ENODEV;
	86	}
	87	#endif
	88
88ced031	89	#endif /* __KERNEL__ */
1da177e4 LT	90
	91	/* PowerMac specific nvram stuffs */
	92
	93	enum {
	94	pmac_nvram_OF, /* Open Firmware partition */
	95	pmac_nvram_XPRAM, /* MacOS XPRAM partition */
	96	pmac_nvram_NR /* MacOS Name Registry partition */
	97	};
	98
88ced031	99	#ifdef __KERNEL__
1da177e4 LT	100	/* Return partition offset in nvram */
	101	extern int pmac_get_partition(int partition);
	102
	103	/* Direct access to XPRAM on PowerMacs */
	104	extern u8 pmac_xpram_read(int xpaddr);
	105	extern void pmac_xpram_write(int xpaddr, u8 data);
	106
	107	/* Synchronize NVRAM */
c55377ee PM	108	extern void nvram_sync(void);
	109
	110	/* Normal access to NVRAM */
	111	extern unsigned char nvram_read_byte(int i);
	112	extern void nvram_write_byte(unsigned char c, int i);
88ced031	113	#endif
1da177e4 LT	114
	115	/* Some offsets in XPRAM */
	116	#define PMAC_XPRAM_MACHINE_LOC 0xe4
	117	#define PMAC_XPRAM_SOUND_VOLUME 0x08
	118
	119	/* Machine location structure in PowerMac XPRAM */
	120	struct pmac_machine_location {
	121	unsigned int latitude; /* 2+30 bit Fractional number */
	122	unsigned int longitude; /* 2+30 bit Fractional number */
	123	unsigned int delta; /* mix of GMT delta and DLS */
	124	};
	125
	126	/*
	127	* /dev/nvram ioctls
	128	*
	129	* Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
	130	* definitely obsolete. Do not use it if you can avoid it
	131	*/
	132
	133	#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
	134	_IOWR('p', 0x40, int)
	135
	136	#define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */
c55377ee	137	#define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */
1da177e4	138
c55377ee	139	#endif /* _ASM_POWERPC_NVRAM_H */