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{MTD] add support for Intel's "Sibley" flash

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This updates the Primary Vendor-Specific Extended Query parsing to
version 1.4 in order to get the information about the Configurable
Programming Mode regions implemented in the Sibley flash, as well as
selecting the appropriate write command code.

This flash does not behave like traditional NOR flash when writing data.
While mtdblock should just work, further changes are needed for JFFS2 use.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Nicolas Pitre 2005-08-06 05:40:46 +01:00 • committed by Thomas Gleixner
parent 4843653cab
commit 638d983840
5 changed files with 92 additions and 29 deletions
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13
include/linux/mtd/cfi.h
View file

@ -1,7 +1,7 @@
/* Common Flash Interface structures
* See http://support.intel.com/design/flash/technote/index.htm
* $Id: cfi.h,v 1.54 2005/06/06 23:04:36 tpoynor Exp $
* $Id: cfi.h,v 1.55 2005/08/06 04:40:42 nico Exp $
*/
#ifndef __MTD_CFI_H__
@ -173,6 +173,15 @@ struct cfi_intelext_regioninfo {
struct cfi_intelext_blockinfo BlockTypes[1];
} __attribute__((packed));
struct cfi_intelext_programming_regioninfo {
uint8_t ProgRegShift;
uint8_t Reserved1;
uint8_t ControlValid;
uint8_t Reserved2;
uint8_t ControlInvalid;
uint8_t Reserved3;
} __attribute__((packed));
/* Vendor-Specific PRI for AMD/Fujitsu Extended Command Set (0x0002) */
struct cfi_pri_amdstd {
@ -316,7 +325,7 @@ static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cf
#define CMD(x) cfi_build_cmd((x), map, cfi)
static inline unsigned char cfi_merge_status(map_word val, struct map_info *map,
static inline unsigned long cfi_merge_status(map_word val, struct map_info *map,
struct cfi_private *cfi)
{
int wordwidth, words_per_bus, chip_mode, chips_per_word;

14
include/linux/mtd/mtd.h
View file

@ -1,5 +1,5 @@
/*
* $Id: mtd.h,v 1.59 2005/04/11 10:19:02 gleixner Exp $
* $Id: mtd.h,v 1.60 2005/08/06 04:40:42 nico Exp $
*
* Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
*
@ -72,7 +72,17 @@ struct mtd_info {
u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
u_int32_t ecctype;
u_int32_t eccsize;
/*
* Reuse some of the above unused fields in the case of NOR flash
* with configurable programming regions to avoid modifying the
* user visible structure layout/size. Only valid when the
* MTD_PROGRAM_REGIONS flag is set.
* (Maybe we should have an union for those?)
*/
#define MTD_PROGREGION_SIZE(mtd) (mtd)->oobblock
#define MTD_PROGREGION_CTRLMODE_VALID(mtd) (mtd)->oobsize
#define MTD_PROGREGION_CTRLMODE_INVALID(mtd) (mtd)->ecctype
// Kernel-only stuff starts here.
char *name;