2024-09-09 08:52:07 +00:00
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/*
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* NVRAM definitions and access functions.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_NVRAM_H
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#define _ASM_POWERPC_NVRAM_H
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#include <linux/errno.h>
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#include <linux/list.h>
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2024-09-09 08:57:42 +00:00
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#include <uapi/asm/nvram.h>
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2024-09-09 08:52:07 +00:00
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#ifdef CONFIG_PPC_PSERIES
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extern int nvram_write_error_log(char * buff, int length,
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unsigned int err_type, unsigned int err_seq);
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extern int nvram_read_error_log(char * buff, int length,
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unsigned int * err_type, unsigned int *err_seq);
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extern int nvram_clear_error_log(void);
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extern int pSeries_nvram_init(void);
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#endif /* CONFIG_PPC_PSERIES */
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#ifdef CONFIG_MMIO_NVRAM
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extern int mmio_nvram_init(void);
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#else
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static inline int mmio_nvram_init(void)
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{
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return -ENODEV;
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}
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#endif
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extern int __init nvram_scan_partitions(void);
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extern loff_t nvram_create_partition(const char *name, int sig,
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int req_size, int min_size);
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extern int nvram_remove_partition(const char *name, int sig,
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const char *exceptions[]);
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extern int nvram_get_partition_size(loff_t data_index);
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extern loff_t nvram_find_partition(const char *name, int sig, int *out_size);
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/* Return partition offset in nvram */
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extern int pmac_get_partition(int partition);
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/* Direct access to XPRAM on PowerMacs */
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extern u8 pmac_xpram_read(int xpaddr);
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extern void pmac_xpram_write(int xpaddr, u8 data);
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/* Synchronize NVRAM */
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extern void nvram_sync(void);
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/* Determine NVRAM size */
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extern ssize_t nvram_get_size(void);
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/* Normal access to NVRAM */
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extern unsigned char nvram_read_byte(int i);
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extern void nvram_write_byte(unsigned char c, int i);
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#endif /* _ASM_POWERPC_NVRAM_H */
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