a2cc5ba075
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
149 lines
4.6 KiB
C
149 lines
4.6 KiB
C
/*
|
|
* Copyright © 2009 - Maxim Levitsky
|
|
* Common routines & support for xD format
|
|
*
|
|
* 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
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/mtd/nand.h>
|
|
#include <linux/module.h>
|
|
#include "sm_common.h"
|
|
|
|
static struct nand_ecclayout nand_oob_sm = {
|
|
.eccbytes = 6,
|
|
.eccpos = {8, 9, 10, 13, 14, 15},
|
|
.oobfree = {
|
|
{.offset = 0 , .length = 4}, /* reserved */
|
|
{.offset = 6 , .length = 2}, /* LBA1 */
|
|
{.offset = 11, .length = 2} /* LBA2 */
|
|
}
|
|
};
|
|
|
|
/* NOTE: This layout is is not compatabable with SmartMedia, */
|
|
/* because the 256 byte devices have page depenent oob layout */
|
|
/* However it does preserve the bad block markers */
|
|
/* If you use smftl, it will bypass this and work correctly */
|
|
/* If you not, then you break SmartMedia compliance anyway */
|
|
|
|
static struct nand_ecclayout nand_oob_sm_small = {
|
|
.eccbytes = 3,
|
|
.eccpos = {0, 1, 2},
|
|
.oobfree = {
|
|
{.offset = 3 , .length = 2}, /* reserved */
|
|
{.offset = 6 , .length = 2}, /* LBA1 */
|
|
}
|
|
};
|
|
|
|
|
|
static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs)
|
|
{
|
|
struct mtd_oob_ops ops;
|
|
struct sm_oob oob;
|
|
int ret, error = 0;
|
|
|
|
memset(&oob, -1, SM_OOB_SIZE);
|
|
oob.block_status = 0x0F;
|
|
|
|
/* As long as this function is called on erase block boundaries
|
|
it will work correctly for 256 byte nand */
|
|
ops.mode = MTD_OPS_PLACE_OOB;
|
|
ops.ooboffs = 0;
|
|
ops.ooblen = mtd->oobsize;
|
|
ops.oobbuf = (void *)&oob;
|
|
ops.datbuf = NULL;
|
|
|
|
|
|
ret = mtd_write_oob(mtd, ofs, &ops);
|
|
if (ret < 0 || ops.oobretlen != SM_OOB_SIZE) {
|
|
printk(KERN_NOTICE
|
|
"sm_common: can't mark sector at %i as bad\n",
|
|
(int)ofs);
|
|
error = -EIO;
|
|
} else
|
|
mtd->ecc_stats.badblocks++;
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
static struct nand_flash_dev nand_smartmedia_flash_ids[] = {
|
|
{"SmartMedia 1MiB 5V", 0x6e, 256, 1, 0x1000, 0},
|
|
{"SmartMedia 1MiB 3,3V", 0xe8, 256, 1, 0x1000, 0},
|
|
{"SmartMedia 1MiB 3,3V", 0xec, 256, 1, 0x1000, 0},
|
|
{"SmartMedia 2MiB 3,3V", 0xea, 256, 2, 0x1000, 0},
|
|
{"SmartMedia 2MiB 5V", 0x64, 256, 2, 0x1000, 0},
|
|
{"SmartMedia 2MiB 3,3V ROM", 0x5d, 512, 2, 0x2000, NAND_ROM},
|
|
{"SmartMedia 4MiB 3,3V", 0xe3, 512, 4, 0x2000, 0},
|
|
{"SmartMedia 4MiB 3,3/5V", 0xe5, 512, 4, 0x2000, 0},
|
|
{"SmartMedia 4MiB 5V", 0x6b, 512, 4, 0x2000, 0},
|
|
{"SmartMedia 4MiB 3,3V ROM", 0xd5, 512, 4, 0x2000, NAND_ROM},
|
|
{"SmartMedia 8MiB 3,3V", 0xe6, 512, 8, 0x2000, 0},
|
|
{"SmartMedia 8MiB 3,3V ROM", 0xd6, 512, 8, 0x2000, NAND_ROM},
|
|
{"SmartMedia 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0},
|
|
{"SmartMedia 16MiB 3,3V ROM", 0x57, 512, 16, 0x4000, NAND_ROM},
|
|
{"SmartMedia 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0},
|
|
{"SmartMedia 32MiB 3,3V ROM", 0x58, 512, 32, 0x4000, NAND_ROM},
|
|
{"SmartMedia 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0},
|
|
{"SmartMedia 64MiB 3,3V ROM", 0xd9, 512, 64, 0x4000, NAND_ROM},
|
|
{"SmartMedia 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0},
|
|
{"SmartMedia 128MiB 3,3V ROM", 0xda, 512, 128, 0x4000, NAND_ROM},
|
|
{"SmartMedia 256MiB 3,3V", 0x71, 512, 256, 0x4000 },
|
|
{"SmartMedia 256MiB 3,3V ROM", 0x5b, 512, 256, 0x4000, NAND_ROM},
|
|
{NULL,}
|
|
};
|
|
|
|
#define XD_TYPEM (NAND_NO_AUTOINCR | NAND_BROKEN_XD)
|
|
static struct nand_flash_dev nand_xd_flash_ids[] = {
|
|
|
|
{"xD 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0},
|
|
{"xD 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0},
|
|
{"xD 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0},
|
|
{"xD 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0},
|
|
{"xD 256MiB 3,3V", 0x71, 512, 256, 0x4000, XD_TYPEM},
|
|
{"xD 512MiB 3,3V", 0xdc, 512, 512, 0x4000, XD_TYPEM},
|
|
{"xD 1GiB 3,3V", 0xd3, 512, 1024, 0x4000, XD_TYPEM},
|
|
{"xD 2GiB 3,3V", 0xd5, 512, 2048, 0x4000, XD_TYPEM},
|
|
{NULL,}
|
|
};
|
|
|
|
int sm_register_device(struct mtd_info *mtd, int smartmedia)
|
|
{
|
|
struct nand_chip *chip = mtd->priv;
|
|
int ret;
|
|
|
|
chip->options |= NAND_SKIP_BBTSCAN;
|
|
|
|
/* Scan for card properties */
|
|
ret = nand_scan_ident(mtd, 1, smartmedia ?
|
|
nand_smartmedia_flash_ids : nand_xd_flash_ids);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Bad block marker position */
|
|
chip->badblockpos = 0x05;
|
|
chip->badblockbits = 7;
|
|
chip->block_markbad = sm_block_markbad;
|
|
|
|
/* ECC layout */
|
|
if (mtd->writesize == SM_SECTOR_SIZE)
|
|
chip->ecc.layout = &nand_oob_sm;
|
|
else if (mtd->writesize == SM_SMALL_PAGE)
|
|
chip->ecc.layout = &nand_oob_sm_small;
|
|
else
|
|
return -ENODEV;
|
|
|
|
ret = nand_scan_tail(mtd);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mtd_device_register(mtd, NULL, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(sm_register_device);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Maxim Levitsky <maximlevitsky@gmail.com>");
|
|
MODULE_DESCRIPTION("Common SmartMedia/xD functions");
|