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[MTD] NAND extended commands, badb block table autorefresh 

Added extended commands for AG-AND device and added 
option for BBT_AUTO_REFRESH.

Signed-off-by: David A. Marlin <dmarlin@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
hifive-unleashed-5.1
David A. Marlin 2005-01-17 18:29:21 +00:00 committed by Thomas Gleixner
parent 8ea2e06fc8
commit 28a48de72b
2 changed files with 28 additions and 3 deletions
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4
drivers/mtd/nand/nand_ids.c
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de)
*
* $Id: nand_ids.c,v 1.10 2004/05/26 13:40:12 gleixner Exp $
* $Id: nand_ids.c,v 1.11 2005/01/17 18:26:27 dmarlin Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -103,7 +103,7 @@ struct nand_flash_dev nand_flash_ids[] = {
* Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go
* There are more speed improvements for reads and writes possible, but not implemented now
*/
{"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY},
{"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY | BBT_AUTO_REFRESH},
{NULL,}
};

27
include/linux/mtd/nand.h
View File

@ -5,7 +5,7 @@
* Steven J. Hill <sjhill@realitydiluted.com>
* Thomas Gleixner <tglx@linutronix.de>
*
* $Id: nand.h,v 1.68 2004/11/12 10:40:37 gleixner Exp $
* $Id: nand.h,v 1.69 2005/01/17 18:29:18 dmarlin Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -48,6 +48,8 @@
* 02-08-2004 tglx added option field to nand structure for chip anomalities
* 05-25-2004 tglx added bad block table support, ST-MICRO manufacturer id
* update of nand_chip structure description
* 01-17-2005 dmarlin added extended commands for AG-AND device and added option
* for BBT_AUTO_REFRESH.
*/
#ifndef __LINUX_MTD_NAND_H
#define __LINUX_MTD_NAND_H
@ -115,6 +117,25 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_
#define NAND_CMD_READSTART 0x30
#define NAND_CMD_CACHEDPROG 0x15
/* Extended commands for AG-AND device */
/*
* Note: the command for NAND_CMD_DEPLETE1 is really 0x00 but
* there is no way to distinguish that from NAND_CMD_READ0
* until the remaining sequence of commands has been completed
* so add a high order bit and mask it off in the command.
*/
#define NAND_CMD_DEPLETE1 0x100
#define NAND_CMD_DEPLETE2 0x38
#define NAND_CMD_STATUS_MULTI 0x71
#define NAND_CMD_STATUS_ERROR 0x72
/* multi-bank error status (banks 0-3) */
#define NAND_CMD_STATUS_ERROR0 0x73
#define NAND_CMD_STATUS_ERROR1 0x74
#define NAND_CMD_STATUS_ERROR2 0x75
#define NAND_CMD_STATUS_ERROR3 0x76
#define NAND_CMD_STATUS_RESET 0x7f
#define NAND_CMD_STATUS_CLEAR 0xff
/* Status bits */
#define NAND_STATUS_FAIL 0x01
#define NAND_STATUS_FAIL_N1 0x02
@ -170,6 +191,10 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_
/* Chip has a array of 4 pages which can be read without
* additional ready /busy waits */
#define NAND_4PAGE_ARRAY 0x00000040
/* Chip requires that BBT is periodically rewritten to prevent
* bits from adjacent blocks from 'leaking' in altering data.
* This happens with the Renesas AG-AND chips, possibly others. */
#define BBT_AUTO_REFRESH 0x00000080
/* Options valid for Samsung large page devices */
#define NAND_SAMSUNG_LP_OPTIONS \