aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/chips/map_ram.c2
-rw-r--r--drivers/mtd/devices/block2mtd.c17
-rw-r--r--drivers/mtd/devices/m25p80.c2
-rw-r--r--drivers/mtd/devices/phram.c2
-rw-r--r--drivers/mtd/devices/slram.c3
-rw-r--r--drivers/mtd/maps/Kconfig2
-rw-r--r--drivers/mtd/maps/nettel.c2
-rw-r--r--drivers/mtd/mtdblock.c3
-rw-r--r--drivers/mtd/mtdblock_ro.c4
-rw-r--r--drivers/mtd/mtdchar.c34
-rw-r--r--drivers/mtd/nand/Kconfig6
-rw-r--r--drivers/mtd/nand/Makefile1
-rw-r--r--drivers/mtd/nand/sharpsl.c2
-rw-r--r--drivers/mtd/nand/ts7250.c208
14 files changed, 260 insertions, 28 deletions
diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c
index bd2e876a814..763925747db 100644
--- a/drivers/mtd/chips/map_ram.c
+++ b/drivers/mtd/chips/map_ram.c
@@ -70,7 +70,7 @@ static struct mtd_info *map_ram_probe(struct map_info *map)
mtd->read = mapram_read;
mtd->write = mapram_write;
mtd->sync = mapram_nop;
- mtd->flags = MTD_CAP_RAM | MTD_VOLATILE;
+ mtd->flags = MTD_CAP_RAM;
mtd->erasesize = PAGE_SIZE;
while(mtd->size & (mtd->erasesize - 1))
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 4160b8334c5..f54e4bf9b96 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -4,7 +4,7 @@
* block2mtd.c - create an mtd from a block device
*
* Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk>
- * Copyright (C) 2004,2005 Jörn Engel <joern@wh.fh-wedel.de>
+ * Copyright (C) 2004-2006 Jörn Engel <joern@wh.fh-wedel.de>
*
* Licence: GPL
*/
@@ -351,6 +351,12 @@ devinit_err:
}
+/* This function works similar to reguler strtoul. In addition, it
+ * allows some suffixes for a more human-readable number format:
+ * ki, Ki, kiB, KiB - multiply result with 1024
+ * Mi, MiB - multiply result with 1024^2
+ * Gi, GiB - multiply result with 1024^3
+ */
static int ustrtoul(const char *cp, char **endp, unsigned int base)
{
unsigned long result = simple_strtoul(cp, endp, base);
@@ -359,11 +365,16 @@ static int ustrtoul(const char *cp, char **endp, unsigned int base)
result *= 1024;
case 'M':
result *= 1024;
+ case 'K':
case 'k':
result *= 1024;
/* By dwmw2 editorial decree, "ki", "Mi" or "Gi" are to be used. */
- if ((*endp)[1] == 'i')
- (*endp) += 2;
+ if ((*endp)[1] == 'i') {
+ if ((*endp)[2] == 'B')
+ (*endp) += 3;
+ else
+ (*endp) += 2;
+ }
}
return result;
}
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 04e65d5dae0..d5f24089be7 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -186,7 +186,7 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
struct m25p *flash = mtd_to_m25p(mtd);
u32 addr,len;
- DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n",
flash->spi->dev.bus_id, __FUNCTION__, "at",
(u32)instr->addr, instr->len);
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index e8685ee6c1e..41af9693d88 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -142,7 +142,7 @@ static int register_device(char *name, unsigned long start, unsigned long len)
new->mtd.name = name;
new->mtd.size = len;
- new->mtd.flags = MTD_CAP_RAM | MTD_ERASEABLE | MTD_VOLATILE;
+ new->mtd.flags = MTD_CAP_RAM;
new->mtd.erase = phram_erase;
new->mtd.point = phram_point;
new->mtd.unpoint = phram_unpoint;
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c
index 6faee6c6958..b3f665e3c38 100644
--- a/drivers/mtd/devices/slram.c
+++ b/drivers/mtd/devices/slram.c
@@ -200,8 +200,7 @@ static int register_device(char *name, unsigned long start, unsigned long length
(*curmtd)->mtdinfo->name = name;
(*curmtd)->mtdinfo->size = length;
- (*curmtd)->mtdinfo->flags = MTD_CLEAR_BITS | MTD_SET_BITS |
- MTD_WRITEB_WRITEABLE | MTD_VOLATILE | MTD_CAP_RAM;
+ (*curmtd)->mtdinfo->flags = MTD_CAP_RAM;
(*curmtd)->mtdinfo->erase = slram_erase;
(*curmtd)->mtdinfo->point = slram_point;
(*curmtd)->mtdinfo->unpoint = slram_unpoint;
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 7abd7fee0dd..80d6810e88e 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -78,7 +78,7 @@ config MTD_PNC2000
config MTD_SC520CDP
tristate "CFI Flash device mapped on AMD SC520 CDP"
- depends on X86 && MTD_CFI
+ depends on X86 && MTD_CFI && MTD_CONCAT
help
The SC520 CDP board has two banks of CFI-compliant chips and one
Dual-in-line JEDEC chip. This 'mapping' driver supports that
diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c
index 54a3102ab19..20771b2a05e 100644
--- a/drivers/mtd/maps/nettel.c
+++ b/drivers/mtd/maps/nettel.c
@@ -20,6 +20,8 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/cfi.h>
#include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/root_dev.h>
#include <asm/io.h>
/****************************************************************************/
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index 2cef280e388..8e50170137e 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -288,8 +288,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
mutex_init(&mtdblk->cache_mutex);
mtdblk->cache_state = STATE_EMPTY;
- if ((mtdblk->mtd->flags & MTD_CAP_RAM) != MTD_CAP_RAM &&
- mtdblk->mtd->erasesize) {
+ if (mtdblk->mtd->type != MTD_RAM && mtdblk->mtd->erasesize) {
mtdblk->cache_size = mtdblk->mtd->erasesize;
mtdblk->cache_data = NULL;
}
diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c
index 0c830ba41ef..29563ed258a 100644
--- a/drivers/mtd/mtdblock_ro.c
+++ b/drivers/mtd/mtdblock_ro.c
@@ -45,9 +45,7 @@ static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
dev->blksize = 512;
dev->size = mtd->size >> 9;
dev->tr = tr;
- if ((mtd->flags & (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) !=
- (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE))
- dev->readonly = 1;
+ dev->readonly = 1;
add_mtd_blktrans_dev(dev);
}
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 6f044584bdc..6b83aee8abb 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -170,16 +170,22 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t
/* FIXME: Use kiovec in 2.5 to lock down the user's buffers
and pass them directly to the MTD functions */
+
+ if (count > MAX_KMALLOC_SIZE)
+ kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+ else
+ kbuf=kmalloc(count, GFP_KERNEL);
+
+ if (!kbuf)
+ return -ENOMEM;
+
while (count) {
+
if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
- kbuf=kmalloc(len,GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
-
switch (MTD_MODE(file)) {
case MTD_MODE_OTP_FACT:
ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf);
@@ -215,9 +221,9 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t
return ret;
}
- kfree(kbuf);
}
+ kfree(kbuf);
return total_retlen;
} /* mtd_read */
@@ -241,18 +247,21 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
if (!count)
return 0;
+ if (count > MAX_KMALLOC_SIZE)
+ kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+ else
+ kbuf=kmalloc(count, GFP_KERNEL);
+
+ if (!kbuf)
+ return -ENOMEM;
+
while (count) {
+
if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
- kbuf=kmalloc(len,GFP_KERNEL);
- if (!kbuf) {
- printk("kmalloc is null\n");
- return -ENOMEM;
- }
-
if (copy_from_user(kbuf, buf, len)) {
kfree(kbuf);
return -EFAULT;
@@ -282,10 +291,9 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
kfree(kbuf);
return ret;
}
-
- kfree(kbuf);
}
+ kfree(kbuf);
return total_retlen;
} /* mtd_write */
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index cfe288a6e85..b735ab61c1e 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -55,6 +55,12 @@ config MTD_NAND_TOTO
help
Support for NAND flash on Texas Instruments Toto platform.
+config MTD_NAND_TS7250
+ tristate "NAND Flash device on TS-7250 board"
+ depends on MACH_TS72XX && MTD_NAND
+ help
+ Support for NAND flash on Technologic Systems TS-7250 platform.
+
config MTD_NAND_IDS
tristate
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 41742026a52..073705bc8c2 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o
obj-$(CONFIG_MTD_NAND_H1900) += h1910.o
obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o
obj-$(CONFIG_MTD_NAND_SHARPSL) += sharpsl.o
+obj-$(CONFIG_MTD_NAND_TS7250) += ts7250.o
obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o
nand-objs = nand_base.o nand_bbt.o
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 1924a4f137c..c294374871a 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -237,7 +237,7 @@ sharpsl_nand_init(void)
nr_partitions = DEFAULT_NUM_PARTITIONS;
sharpsl_partition_info = sharpsl_nand_default_partition_info;
if (machine_is_poodle()) {
- sharpsl_partition_info[1].size=30 * 1024 * 1024;
+ sharpsl_partition_info[1].size=22 * 1024 * 1024;
} else if (machine_is_corgi() || machine_is_shepherd()) {
sharpsl_partition_info[1].size=25 * 1024 * 1024;
} else if (machine_is_husky()) {
diff --git a/drivers/mtd/nand/ts7250.c b/drivers/mtd/nand/ts7250.c
new file mode 100644
index 00000000000..643633d91a8
--- /dev/null
+++ b/drivers/mtd/nand/ts7250.c
@@ -0,0 +1,208 @@
+/*
+ * drivers/mtd/nand/ts7250.c
+ *
+ * Copyright (C) 2004 Technologic Systems (support@embeddedARM.com)
+ *
+ * Derived from drivers/mtd/nand/edb7312.c
+ * Copyright (C) 2004 Marius Gröger (mag@sysgo.de)
+ *
+ * Derived from drivers/mtd/nand/autcpu12.c
+ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
+ *
+ * $Id: ts7250.c,v 1.4 2004/12/30 22:02:07 joff 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
+ * published by the Free Software Foundation.
+ *
+ * Overview:
+ * This is a device driver for the NAND flash device found on the
+ * TS-7250 board which utilizes a Samsung 32 Mbyte part.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/sizes.h>
+#include <asm/mach-types.h>
+
+/*
+ * MTD structure for TS7250 board
+ */
+static struct mtd_info *ts7250_mtd = NULL;
+
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probes[] = { "cmdlinepart", NULL };
+
+#define NUM_PARTITIONS 3
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info32[] = {
+ {
+ .name = "TS-BOOTROM",
+ .offset = 0x00000000,
+ .size = 0x00004000,
+ }, {
+ .name = "Linux",
+ .offset = 0x00004000,
+ .size = 0x01d00000,
+ }, {
+ .name = "RedBoot",
+ .offset = 0x01d04000,
+ .size = 0x002fc000,
+ },
+};
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info128[] = {
+ {
+ .name = "TS-BOOTROM",
+ .offset = 0x00000000,
+ .size = 0x00004000,
+ }, {
+ .name = "Linux",
+ .offset = 0x00004000,
+ .size = 0x07d00000,
+ }, {
+ .name = "RedBoot",
+ .offset = 0x07d04000,
+ .size = 0x002fc000,
+ },
+};
+#endif
+
+
+/*
+ * hardware specific access to control-lines
+ */
+static void ts7250_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+ unsigned long ctrl = TS72XX_NAND_CONTROL_VIRT_BASE;
+
+ switch(cmd) {
+ case NAND_CTL_SETCLE:
+ __raw_writeb(__raw_readb(ctrl) | 0x2, ctrl);
+ break;
+ case NAND_CTL_CLRCLE:
+ __raw_writeb(__raw_readb(ctrl) & ~0x2, ctrl);
+ break;
+ case NAND_CTL_SETALE:
+ __raw_writeb(__raw_readb(ctrl) | 0x1, ctrl);
+ break;
+ case NAND_CTL_CLRALE:
+ __raw_writeb(__raw_readb(ctrl) & ~0x1, ctrl);
+ break;
+ case NAND_CTL_SETNCE:
+ __raw_writeb(__raw_readb(ctrl) | 0x4, ctrl);
+ break;
+ case NAND_CTL_CLRNCE:
+ __raw_writeb(__raw_readb(ctrl) & ~0x4, ctrl);
+ break;
+ }
+}
+
+/*
+ * read device ready pin
+ */
+static int ts7250_device_ready(struct mtd_info *mtd)
+{
+ return __raw_readb(TS72XX_NAND_BUSY_VIRT_BASE) & 0x20;
+}
+
+/*
+ * Main initialization routine
+ */
+static int __init ts7250_init(void)
+{
+ struct nand_chip *this;
+ const char *part_type = 0;
+ int mtd_parts_nb = 0;
+ struct mtd_partition *mtd_parts = 0;
+
+ if (!machine_is_ts72xx() || board_is_ts7200())
+ return -ENXIO;
+
+ /* Allocate memory for MTD device structure and private data */
+ ts7250_mtd = kmalloc(sizeof(struct mtd_info) +
+ sizeof(struct nand_chip), GFP_KERNEL);
+ if (!ts7250_mtd) {
+ printk("Unable to allocate TS7250 NAND MTD device structure.\n");
+ return -ENOMEM;
+ }
+
+ /* Get pointer to private data */
+ this = (struct nand_chip *)(&ts7250_mtd[1]);
+
+ /* Initialize structures */
+ memset(ts7250_mtd, 0, sizeof(struct mtd_info));
+ memset(this, 0, sizeof(struct nand_chip));
+
+ /* Link the private data with the MTD structure */
+ ts7250_mtd->priv = this;
+
+ /* insert callbacks */
+ this->IO_ADDR_R = (void *)TS72XX_NAND_DATA_VIRT_BASE;
+ this->IO_ADDR_W = (void *)TS72XX_NAND_DATA_VIRT_BASE;
+ this->hwcontrol = ts7250_hwcontrol;
+ this->dev_ready = ts7250_device_ready;
+ this->chip_delay = 15;
+ this->eccmode = NAND_ECC_SOFT;
+
+ printk("Searching for NAND flash...\n");
+ /* Scan to find existence of the device */
+ if (nand_scan(ts7250_mtd, 1)) {
+ kfree(ts7250_mtd);
+ return -ENXIO;
+ }
+
+#ifdef CONFIG_MTD_PARTITIONS
+ ts7250_mtd->name = "ts7250-nand";
+ mtd_parts_nb = parse_mtd_partitions(ts7250_mtd, part_probes,
+ &mtd_parts, 0);
+ if (mtd_parts_nb > 0)
+ part_type = "command line";
+ else
+ mtd_parts_nb = 0;
+#endif
+ if (mtd_parts_nb == 0) {
+ mtd_parts = partition_info32;
+ if (ts7250_mtd->size >= (128 * 0x100000))
+ mtd_parts = partition_info128;
+ mtd_parts_nb = NUM_PARTITIONS;
+ part_type = "static";
+ }
+
+ /* Register the partitions */
+ printk(KERN_NOTICE "Using %s partition definition\n", part_type);
+ add_mtd_partitions(ts7250_mtd, mtd_parts, mtd_parts_nb);
+
+ /* Return happy */
+ return 0;
+}
+module_init(ts7250_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit ts7250_cleanup(void)
+{
+ /* Unregister the device */
+ del_mtd_device(ts7250_mtd);
+
+ /* Free the MTD device structure */
+ kfree(ts7250_mtd);
+}
+module_exit(ts7250_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jesse Off <joff@embeddedARM.com>");
+MODULE_DESCRIPTION("MTD map driver for Technologic Systems TS-7250 board");
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-11 05:03:41 +0000