/* * 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 */