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-rw-r--r--drivers/mtd/devices/Kconfig1
-rw-r--r--drivers/mtd/devices/Makefile1
-rw-r--r--drivers/mtd/devices/block2mtd.c6
-rw-r--r--drivers/mtd/devices/doc2000.c2
-rw-r--r--drivers/mtd/devices/doc2001.c2
-rw-r--r--drivers/mtd/devices/doc2001plus.c2
-rw-r--r--drivers/mtd/devices/docecc.c2
-rw-r--r--drivers/mtd/devices/docprobe.c5
-rw-r--r--drivers/mtd/devices/lart.c2
-rw-r--r--drivers/mtd/devices/m25p80.c22
-rw-r--r--drivers/mtd/devices/ms02-nv.c2
-rw-r--r--drivers/mtd/devices/ms02-nv.h2
-rw-r--r--drivers/mtd/devices/mtd_dataflash.c169
-rw-r--r--drivers/mtd/devices/mtdram.c1
-rw-r--r--drivers/mtd/devices/phram.c2
-rw-r--r--drivers/mtd/devices/pmc551.c2
-rw-r--r--drivers/mtd/devices/slram.c2
17 files changed, 178 insertions, 47 deletions
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 35ed1103dbb..9c613f06623 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -1,5 +1,4 @@
# drivers/mtd/maps/Kconfig
-# $Id: Kconfig,v 1.18 2005/11/07 11:14:24 gleixner Exp $
menu "Self-contained MTD device drivers"
depends on MTD!=n
diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile
index 0f788d5c4bf..0993d5cf392 100644
--- a/drivers/mtd/devices/Makefile
+++ b/drivers/mtd/devices/Makefile
@@ -1,7 +1,6 @@
#
# linux/drivers/devices/Makefile
#
-# $Id: Makefile.common,v 1.7 2004/12/22 17:51:15 joern Exp $
obj-$(CONFIG_MTD_DOC2000) += doc2000.o
obj-$(CONFIG_MTD_DOC2001) += doc2001.o
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 7b72a1b3611..91fbba76763 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -1,6 +1,4 @@
/*
- * $Id: block2mtd.c,v 1.30 2005/11/29 14:48:32 gleixner Exp $
- *
* block2mtd.c - create an mtd from a block device
*
* Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk>
@@ -20,9 +18,6 @@
#include <linux/mutex.h>
#include <linux/mount.h>
-#define VERSION "$Revision: 1.30 $"
-
-
#define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args)
#define INFO(fmt, args...) printk(KERN_INFO "block2mtd: " fmt "\n" , ## args)
@@ -453,7 +448,6 @@ MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
static int __init block2mtd_init(void)
{
int ret = 0;
- INFO("version " VERSION);
#ifndef MODULE
if (strlen(block2mtd_paramline))
diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index 846989f292e..50de839c77a 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -3,8 +3,6 @@
* Linux driver for Disk-On-Chip 2000 and Millennium
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
- *
- * $Id: doc2000.c,v 1.67 2005/11/07 11:14:24 gleixner Exp $
*/
#include <linux/kernel.h>
diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c
index 6413efc045e..e32c568c114 100644
--- a/drivers/mtd/devices/doc2001.c
+++ b/drivers/mtd/devices/doc2001.c
@@ -3,8 +3,6 @@
* Linux driver for Disk-On-Chip Millennium
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
- *
- * $Id: doc2001.c,v 1.49 2005/11/07 11:14:24 gleixner Exp $
*/
#include <linux/kernel.h>
diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c
index 83be3461658..d853f891b58 100644
--- a/drivers/mtd/devices/doc2001plus.c
+++ b/drivers/mtd/devices/doc2001plus.c
@@ -6,8 +6,6 @@
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
*
- * $Id: doc2001plus.c,v 1.14 2005/11/07 11:14:24 gleixner Exp $
- *
* Released under GPL
*/
diff --git a/drivers/mtd/devices/docecc.c b/drivers/mtd/devices/docecc.c
index fd8a8daba3a..874e51b110a 100644
--- a/drivers/mtd/devices/docecc.c
+++ b/drivers/mtd/devices/docecc.c
@@ -7,8 +7,6 @@
* Author: Fabrice Bellard (fabrice.bellard@netgem.com)
* Copyright (C) 2000 Netgem S.A.
*
- * $Id: docecc.c,v 1.7 2005/11/07 11:14:25 gleixner Exp $
- *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
diff --git a/drivers/mtd/devices/docprobe.c b/drivers/mtd/devices/docprobe.c
index d8cc94ec4e5..6e62922942b 100644
--- a/drivers/mtd/devices/docprobe.c
+++ b/drivers/mtd/devices/docprobe.c
@@ -4,9 +4,6 @@
/* (C) 1999 Machine Vision Holdings, Inc. */
/* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> */
-/* $Id: docprobe.c,v 1.46 2005/11/07 11:14:25 gleixner Exp $ */
-
-
/* DOC_PASSIVE_PROBE:
In order to ensure that the BIOS checksum is correct at boot time, and
@@ -79,8 +76,6 @@ static unsigned long __initdata doc_locations[] = {
0xe0000, 0xe2000, 0xe4000, 0xe6000,
0xe8000, 0xea000, 0xec000, 0xee000,
#endif /* CONFIG_MTD_DOCPROBE_HIGH */
-#elif defined(__PPC__)
- 0xe4000000,
#else
#warning Unknown architecture for DiskOnChip. No default probe locations defined
#endif
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index 1d324e5c412..f4bda4cee49 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -2,8 +2,6 @@
/*
* MTD driver for the 28F160F3 Flash Memory (non-CFI) on LART.
*
- * $Id: lart.c,v 1.9 2005/11/07 11:14:25 gleixner Exp $
- *
* Author: Abraham vd Merwe <abraham@2d3d.co.za>
*
* Copyright (c) 2001, 2d3D, Inc.
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index b402269301f..b35c3333e21 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -33,6 +33,7 @@
/* Flash opcodes. */
#define OPCODE_WREN 0x06 /* Write enable */
#define OPCODE_RDSR 0x05 /* Read status register */
+#define OPCODE_WRSR 0x01 /* Write status register 1 byte */
#define OPCODE_NORM_READ 0x03 /* Read data bytes (low frequency) */
#define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */
#define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */
@@ -112,6 +113,17 @@ static int read_sr(struct m25p *flash)
return val;
}
+/*
+ * Write status register 1 byte
+ * Returns negative if error occurred.
+ */
+static int write_sr(struct m25p *flash, u8 val)
+{
+ flash->command[0] = OPCODE_WRSR;
+ flash->command[1] = val;
+
+ return spi_write(flash->spi, flash->command, 2);
+}
/*
* Set write enable latch with Write Enable command.
@@ -589,6 +601,16 @@ static int __devinit m25p_probe(struct spi_device *spi)
mutex_init(&flash->lock);
dev_set_drvdata(&spi->dev, flash);
+ /*
+ * Atmel serial flash tend to power up
+ * with the software protection bits set
+ */
+
+ if (info->jedec_id >> 16 == 0x1f) {
+ write_enable(flash);
+ write_sr(flash, 0);
+ }
+
if (data && data->name)
flash->mtd.name = data->name;
else
diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c
index 9cff119a202..6a9a24a80a6 100644
--- a/drivers/mtd/devices/ms02-nv.c
+++ b/drivers/mtd/devices/ms02-nv.c
@@ -5,8 +5,6 @@
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
- *
- * $Id: ms02-nv.c,v 1.11 2005/11/14 13:41:47 macro Exp $
*/
#include <linux/init.h>
diff --git a/drivers/mtd/devices/ms02-nv.h b/drivers/mtd/devices/ms02-nv.h
index 8a6eef7cfee..04deafd3a77 100644
--- a/drivers/mtd/devices/ms02-nv.h
+++ b/drivers/mtd/devices/ms02-nv.h
@@ -9,8 +9,6 @@
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
- *
- * $Id: ms02-nv.h,v 1.3 2003/08/19 09:25:36 dwmw2 Exp $
*/
#include <linux/ioport.h>
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index b35e4813a3a..8bd0dea6885 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -15,6 +15,8 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/mutex.h>
+#include <linux/err.h>
+
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
@@ -82,7 +84,7 @@
struct dataflash {
- u8 command[4];
+ uint8_t command[4];
char name[24];
unsigned partitioned:1;
@@ -150,7 +152,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
struct spi_transfer x = { .tx_dma = 0, };
struct spi_message msg;
unsigned blocksize = priv->page_size << 3;
- u8 *command;
+ uint8_t *command;
DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n",
spi->dev.bus_id,
@@ -182,8 +184,8 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
pageaddr = pageaddr << priv->page_offset;
command[0] = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE;
- command[1] = (u8)(pageaddr >> 16);
- command[2] = (u8)(pageaddr >> 8);
+ command[1] = (uint8_t)(pageaddr >> 16);
+ command[2] = (uint8_t)(pageaddr >> 8);
command[3] = 0;
DEBUG(MTD_DEBUG_LEVEL3, "ERASE %s: (%x) %x %x %x [%i]\n",
@@ -234,7 +236,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
struct spi_transfer x[2] = { { .tx_dma = 0, }, };
struct spi_message msg;
unsigned int addr;
- u8 *command;
+ uint8_t *command;
int status;
DEBUG(MTD_DEBUG_LEVEL2, "%s: read 0x%x..0x%x\n",
@@ -274,9 +276,9 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
* fewer "don't care" bytes. Both buffers stay unchanged.
*/
command[0] = OP_READ_CONTINUOUS;
- command[1] = (u8)(addr >> 16);
- command[2] = (u8)(addr >> 8);
- command[3] = (u8)(addr >> 0);
+ command[1] = (uint8_t)(addr >> 16);
+ command[2] = (uint8_t)(addr >> 8);
+ command[3] = (uint8_t)(addr >> 0);
/* plus 4 "don't care" bytes */
status = spi_sync(priv->spi, &msg);
@@ -311,7 +313,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t remaining = len;
u_char *writebuf = (u_char *) buf;
int status = -EINVAL;
- u8 *command;
+ uint8_t *command;
DEBUG(MTD_DEBUG_LEVEL2, "%s: write 0x%x..0x%x\n",
spi->dev.bus_id, (unsigned)to, (unsigned)(to + len));
@@ -487,7 +489,8 @@ add_dataflash(struct spi_device *spi, char *name,
device->write = dataflash_write;
device->priv = priv;
- dev_info(&spi->dev, "%s (%d KBytes)\n", name, device->size/1024);
+ dev_info(&spi->dev, "%s (%d KBytes) pagesize %d bytes\n",
+ name, DIV_ROUND_UP(device->size, 1024), pagesize);
dev_set_drvdata(&spi->dev, priv);
if (mtd_has_partitions()) {
@@ -516,12 +519,135 @@ add_dataflash(struct spi_device *spi, char *name,
return add_mtd_device(device) == 1 ? -ENODEV : 0;
}
+struct flash_info {
+ char *name;
+
+ /* JEDEC id has a high byte of zero plus three data bytes:
+ * the manufacturer id, then a two byte device id.
+ */
+ uint32_t jedec_id;
+
+ /* The size listed here is what works with OP_ERASE_PAGE. */
+ unsigned nr_pages;
+ uint16_t pagesize;
+ uint16_t pageoffset;
+
+ uint16_t flags;
+#define SUP_POW2PS 0x0002 /* supports 2^N byte pages */
+#define IS_POW2PS 0x0001 /* uses 2^N byte pages */
+};
+
+static struct flash_info __devinitdata dataflash_data [] = {
+
+ /*
+ * NOTE: chips with SUP_POW2PS (rev D and up) need two entries,
+ * one with IS_POW2PS and the other without. The entry with the
+ * non-2^N byte page size can't name exact chip revisions without
+ * losing backwards compatibility for cmdlinepart.
+ *
+ * These newer chips also support 128-byte security registers (with
+ * 64 bytes one-time-programmable) and software write-protection.
+ */
+ { "AT45DB011B", 0x1f2200, 512, 264, 9, SUP_POW2PS},
+ { "at45db011d", 0x1f2200, 512, 256, 8, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB021B", 0x1f2300, 1024, 264, 9, SUP_POW2PS},
+ { "at45db021d", 0x1f2300, 1024, 256, 8, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB041x", 0x1f2400, 2048, 264, 9, SUP_POW2PS},
+ { "at45db041d", 0x1f2400, 2048, 256, 8, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB081B", 0x1f2500, 4096, 264, 9, SUP_POW2PS},
+ { "at45db081d", 0x1f2500, 4096, 256, 8, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB161x", 0x1f2600, 4096, 528, 10, SUP_POW2PS},
+ { "at45db161d", 0x1f2600, 4096, 512, 9, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB321x", 0x1f2700, 8192, 528, 10, 0}, /* rev C */
+
+ { "AT45DB321x", 0x1f2701, 8192, 528, 10, SUP_POW2PS},
+ { "at45db321d", 0x1f2701, 8192, 512, 9, SUP_POW2PS | IS_POW2PS},
+
+ { "AT45DB642x", 0x1f2800, 8192, 1056, 11, SUP_POW2PS},
+ { "at45db642d", 0x1f2800, 8192, 1024, 10, SUP_POW2PS | IS_POW2PS},
+};
+
+static struct flash_info *__devinit jedec_probe(struct spi_device *spi)
+{
+ int tmp;
+ uint8_t code = OP_READ_ID;
+ uint8_t id[3];
+ uint32_t jedec;
+ struct flash_info *info;
+ int status;
+
+ /* JEDEC also defines an optional "extended device information"
+ * string for after vendor-specific data, after the three bytes
+ * we use here. Supporting some chips might require using it.
+ *
+ * If the vendor ID isn't Atmel's (0x1f), assume this call failed.
+ * That's not an error; only rev C and newer chips handle it, and
+ * only Atmel sells these chips.
+ */
+ tmp = spi_write_then_read(spi, &code, 1, id, 3);
+ if (tmp < 0) {
+ DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n",
+ spi->dev.bus_id, tmp);
+ return ERR_PTR(tmp);
+ }
+ if (id[0] != 0x1f)
+ return NULL;
+
+ jedec = id[0];
+ jedec = jedec << 8;
+ jedec |= id[1];
+ jedec = jedec << 8;
+ jedec |= id[2];
+
+ for (tmp = 0, info = dataflash_data;
+ tmp < ARRAY_SIZE(dataflash_data);
+ tmp++, info++) {
+ if (info->jedec_id == jedec) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: OTP, sector protect%s\n",
+ dev_name(&spi->dev),
+ (info->flags & SUP_POW2PS)
+ ? ", binary pagesize" : ""
+ );
+ if (info->flags & SUP_POW2PS) {
+ status = dataflash_status(spi);
+ if (status < 0) {
+ DEBUG(MTD_DEBUG_LEVEL1,
+ "%s: status error %d\n",
+ dev_name(&spi->dev), status);
+ return ERR_PTR(status);
+ }
+ if (status & 0x1) {
+ if (info->flags & IS_POW2PS)
+ return info;
+ } else {
+ if (!(info->flags & IS_POW2PS))
+ return info;
+ }
+ }
+ }
+ }
+
+ /*
+ * Treat other chips as errors ... we won't know the right page
+ * size (it might be binary) even when we can tell which density
+ * class is involved (legacy chip id scheme).
+ */
+ dev_warn(&spi->dev, "JEDEC id %06x not handled\n", jedec);
+ return ERR_PTR(-ENODEV);
+}
+
/*
- * Detect and initialize DataFlash device:
+ * Detect and initialize DataFlash device, using JEDEC IDs on newer chips
+ * or else the ID code embedded in the status bits:
*
* Device Density ID code #Pages PageSize Offset
* AT45DB011B 1Mbit (128K) xx0011xx (0x0c) 512 264 9
- * AT45DB021B 2Mbit (256K) xx0101xx (0x14) 1025 264 9
+ * AT45DB021B 2Mbit (256K) xx0101xx (0x14) 1024 264 9
* AT45DB041B 4Mbit (512K) xx0111xx (0x1c) 2048 264 9
* AT45DB081B 8Mbit (1M) xx1001xx (0x24) 4096 264 9
* AT45DB0161B 16Mbit (2M) xx1011xx (0x2c) 4096 528 10
@@ -532,7 +658,24 @@ add_dataflash(struct spi_device *spi, char *name,
static int __devinit dataflash_probe(struct spi_device *spi)
{
int status;
+ struct flash_info *info;
+ /*
+ * Try to detect dataflash by JEDEC ID.
+ * If it succeeds we know we have either a C or D part.
+ * D will support power of 2 pagesize option.
+ */
+ info = jedec_probe(spi);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+ if (info != NULL)
+ return add_dataflash(spi, info->name, info->nr_pages,
+ info->pagesize, info->pageoffset);
+
+ /*
+ * Older chips support only legacy commands, identifing
+ * capacity using bits in the status byte.
+ */
status = dataflash_status(spi);
if (status <= 0 || status == 0xff) {
DEBUG(MTD_DEBUG_LEVEL1, "%s: status error %d\n",
@@ -551,7 +694,7 @@ static int __devinit dataflash_probe(struct spi_device *spi)
status = add_dataflash(spi, "AT45DB011B", 512, 264, 9);
break;
case 0x14: /* 0 1 0 1 x x */
- status = add_dataflash(spi, "AT45DB021B", 1025, 264, 9);
+ status = add_dataflash(spi, "AT45DB021B", 1024, 264, 9);
break;
case 0x1c: /* 0 1 1 1 x x */
status = add_dataflash(spi, "AT45DB041x", 2048, 264, 9);
diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c
index 0399be17862..3aaca88847d 100644
--- a/drivers/mtd/devices/mtdram.c
+++ b/drivers/mtd/devices/mtdram.c
@@ -1,6 +1,5 @@
/*
* mtdram - a test mtd device
- * $Id: mtdram.c,v 1.37 2005/04/21 03:42:11 joern Exp $
* Author: Alexander Larsson <alex@cendio.se>
*
* Copyright (c) 1999 Alexander Larsson <alex@cendio.se>
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index c7987b1c5e0..088fbb7595b 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -1,6 +1,4 @@
/**
- * $Id: phram.c,v 1.16 2005/11/07 11:14:25 gleixner Exp $
- *
* Copyright (c) ???? Jochen Schäuble <psionic@psionic.de>
* Copyright (c) 2003-2004 Joern Engel <joern@wh.fh-wedel.de>
*
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index bc998174906..d38bca64bb1 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -1,6 +1,4 @@
/*
- * $Id: pmc551.c,v 1.32 2005/11/07 11:14:25 gleixner Exp $
- *
* PMC551 PCI Mezzanine Ram Device
*
* Author:
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c
index cb86db746f2..a425d09f35a 100644
--- a/drivers/mtd/devices/slram.c
+++ b/drivers/mtd/devices/slram.c
@@ -1,7 +1,5 @@
/*======================================================================
- $Id: slram.c,v 1.36 2005/11/07 11:14:25 gleixner Exp $
-
This driver provides a method to access memory not used by the kernel
itself (i.e. if the kernel commandline mem=xxx is used). To actually
use slram at least mtdblock or mtdchar is required (for block or
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 14:17:31 +0000