projects / deliverable / linux.git / blame
| 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 | */ | |
| c55377ee PM |
9 | #ifndef _ASM_POWERPC_NVRAM_H |
| 10 | #define _ASM_POWERPC_NVRAM_H | |
| 1da177e4 | 11 | |
| 134d4956 | 12 | |
| 74d51d02 | 13 | #include <linux/errno.h> |
| 134d4956 | 14 | #include <linux/list.h> |
| c3617f72 | 15 | #include <uapi/asm/nvram.h> |
| 134d4956 | 16 | |
| edc79a2f | 17 | #ifdef CONFIG_PPC_PSERIES |
| 0f2342c8 LV |
18 | extern int nvram_write_error_log(char * buff, int length, |
| 19 | unsigned int err_type, unsigned int err_seq); | |
| 20 | extern int nvram_read_error_log(char * buff, int length, | |
| 21 | unsigned int * err_type, unsigned int *err_seq); | |
| 1da177e4 | 22 | extern int nvram_clear_error_log(void); |
| 1da177e4 | 23 | extern int pSeries_nvram_init(void); |
| edc79a2f | 24 | #endif /* CONFIG_PPC_PSERIES */ |
| 4751505c IK |
25 | |
| 26 | #ifdef CONFIG_MMIO_NVRAM | |
| f3f66f59 | 27 | extern int mmio_nvram_init(void); |
| 4751505c IK |
28 | #else |
| 29 | static inline int mmio_nvram_init(void) | |
| 30 | { | |
| 31 | return -ENODEV; | |
| 32 | } | |
| 33 | #endif | |
| 34 | ||
| edc79a2f BH |
35 | extern int __init nvram_scan_partitions(void); |
| 36 | extern loff_t nvram_create_partition(const char *name, int sig, | |
| 37 | int req_size, int min_size); | |
| 0f4ac132 JK |
38 | extern int nvram_remove_partition(const char *name, int sig, |
| 39 | const char *exceptions[]); | |
| edc79a2f BH |
40 | extern int nvram_get_partition_size(loff_t data_index); |
| 41 | extern loff_t nvram_find_partition(const char *name, int sig, int *out_size); | |
| 42 | ||
| 1da177e4 LT |
43 | /* Return partition offset in nvram */ |
| 44 | extern int pmac_get_partition(int partition); | |
| 45 | ||
| 46 | /* Direct access to XPRAM on PowerMacs */ | |
| 47 | extern u8 pmac_xpram_read(int xpaddr); | |
| 48 | extern void pmac_xpram_write(int xpaddr, u8 data); | |
| 49 | ||
| 50 | /* Synchronize NVRAM */ | |
| c55377ee PM |
51 | extern void nvram_sync(void); |
| 52 | ||
| d331d830 MW |
53 | /* Determine NVRAM size */ |
| 54 | extern ssize_t nvram_get_size(void); | |
| 55 | ||
| c55377ee PM |
56 | /* Normal access to NVRAM */ |
| 57 | extern unsigned char nvram_read_byte(int i); | |
| 58 | extern void nvram_write_byte(unsigned char c, int i); | |
| c55377ee | 59 | #endif /* _ASM_POWERPC_NVRAM_H */ |