diff options
| author | Nicolas Pitre <nico@cam.org> | 2005-02-08 17:11:19 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 12:25:23 +0200 |
| commit | f77814dd5728edaf1239d19755d2aa0d8c33d861 (patch) | |
| tree | 5cf7f73aa367bf152e5fbd16b5173e18bb787dd5 /include/linux/mtd/map.h | |
| parent | 67d9e95c393d23c229836e28b262dc73d71da784 (diff) | |
[MTD] Support for protection register support on Intel FLASH chips
This enables support for reading, writing and locking so called
"Protection Registers" present on some flash chips.
A subset of them are pre-programmed at the factory with a
unique set of values. The rest is user-programmable.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/mtd/map.h')
| -rw-r--r-- | include/linux/mtd/map.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index f0268b99c900..8fc6679aa9b1 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -1,6 +1,6 @@ /* Overhauled routines for dealing with different mmap regions of flash */ -/* $Id: map.h,v 1.46 2005/01/05 17:09:44 dwmw2 Exp $ */ +/* $Id: map.h,v 1.47 2005/02/08 17:11:15 nico Exp $ */ #ifndef __LINUX_MTD_MAP_H__ #define __LINUX_MTD_MAP_H__ @@ -263,6 +263,17 @@ static inline map_word map_word_and(struct map_info *map, map_word val1, map_wor return r; } +static inline map_word map_word_clr(struct map_info *map, map_word val1, map_word val2) +{ + map_word r; + int i; + + for (i=0; i<map_words(map); i++) { + r.x[i] = val1.x[i] & ~val2.x[i]; + } + return r; +} + static inline map_word map_word_or(struct map_info *map, map_word val1, map_word val2) { map_word r; @@ -273,6 +284,7 @@ static inline map_word map_word_or(struct map_info *map, map_word val1, map_word } return r; } + #define map_word_andequal(m, a, b, z) map_word_equal(m, z, map_word_and(m, a, b)) static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word val2) @@ -338,6 +350,7 @@ static inline map_word map_word_ff(struct map_info *map) } return r; } + static inline map_word inline_map_read(struct map_info *map, unsigned long ofs) { map_word r; |