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/*
* 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>
#include <linux/list.h>
#include <uapi/asm/nvram.h>
#ifdef CONFIG_PPC_PSERIES
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);
#endif /* CONFIG_PPC_PSERIES */
#ifdef CONFIG_MMIO_NVRAM
extern int mmio_nvram_init(void);
#else
static inline int mmio_nvram_init(void)
{
return -ENODEV;
}
#endif
extern int __init nvram_scan_partitions(void);
extern loff_t nvram_create_partition(const char *name, int sig,
int req_size, int min_size);
extern int nvram_remove_partition(const char *name, int sig,
const char *exceptions[]);
extern int nvram_get_partition_size(loff_t data_index);
extern loff_t nvram_find_partition(const char *name, int sig, int *out_size);
/* 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 /* _ASM_POWERPC_NVRAM_H */