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[Hackndev-commit] SF.net SVN: hackndev: [1056] linux4palm/linux/trunk/drivers/mtd/maps
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From: <mar...@us...> - 2007-06-24 00:48:28
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Revision: 1056
http://svn.sourceforge.net/hackndev/?rev=1056&view=rev
Author: marex_z71
Date: 2007-06-23 17:48:26 -0700 (Sat, 23 Jun 2007)
Log Message:
-----------
PalmTC: driver for built-in flash, may be dangerous
Modified Paths:
--------------
linux4palm/linux/trunk/drivers/mtd/maps/Kconfig
linux4palm/linux/trunk/drivers/mtd/maps/Makefile
Added Paths:
-----------
linux4palm/linux/trunk/drivers/mtd/maps/palmtc-flash.c
Modified: linux4palm/linux/trunk/drivers/mtd/maps/Kconfig
===================================================================
--- linux4palm/linux/trunk/drivers/mtd/maps/Kconfig 2007-06-24 00:46:55 UTC (rev 1055)
+++ linux4palm/linux/trunk/drivers/mtd/maps/Kconfig 2007-06-24 00:48:26 UTC (rev 1056)
@@ -504,6 +504,15 @@
help
Very dangerous stuff ;)
+config MTD_PALMTC
+ tristate "Palm Tungsten|C flash (DANGEROUS)"
+ depends on MTD_CFI && MACH_OMAP_PALMTC
+ help
+ This MTD map describes how flash memory on Palm Tungsten|C
+ is organized. With this driver you can read and probably also
+ write into device's FlashROM memory (DANGEROUS, use with
+ caution!).
+
config MTD_MPC1211
tristate "CFI Flash device mapped on Interface MPC-1211"
depends on SH_MPC1211 && MTD_CFI
Modified: linux4palm/linux/trunk/drivers/mtd/maps/Makefile
===================================================================
--- linux4palm/linux/trunk/drivers/mtd/maps/Makefile 2007-06-24 00:46:55 UTC (rev 1055)
+++ linux4palm/linux/trunk/drivers/mtd/maps/Makefile 2007-06-24 00:48:26 UTC (rev 1056)
@@ -61,6 +61,7 @@
obj-$(CONFIG_MTD_WALNUT) += walnut.o
obj-$(CONFIG_MTD_H720X) += h720x-flash.o
obj-$(CONFIG_MTD_PALMT3) += palmt3-flash.o
+obj-$(CONFIG_MTD_PALMTC) += palmtc-flash.o
obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
obj-$(CONFIG_MTD_NOR_TOTO) += omap-toto-flash.o
obj-$(CONFIG_MTD_MPC1211) += mpc1211.o
Added: linux4palm/linux/trunk/drivers/mtd/maps/palmtc-flash.c
===================================================================
--- linux4palm/linux/trunk/drivers/mtd/maps/palmtc-flash.c (rev 0)
+++ linux4palm/linux/trunk/drivers/mtd/maps/palmtc-flash.c 2007-06-24 00:48:26 UTC (rev 1056)
@@ -0,0 +1,148 @@
+/*
+ * Palm Tungsten|C MTD map
+ *
+ * Author: Marek Vasut <mar...@gm...>
+ *
+ * Based on Palm T|T3 flash support by
+ * Vladimir "Farcaller" Pouzanov <far...@gm...>
+ * Original code and (C) by
+ * Jungjun Kim <jun...@hy...>
+ * Thomas Gleixner <tg...@li...>
+ *
+ *
+ * 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 (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+
+static struct mtd_info *mymtd;
+
+static struct map_info palmtc_map = {
+ .name = "palmtc-flash",
+ .bankwidth = 2,
+ .size = 0x800000, /* 8MB */
+ .phys = 0x0, /* starting at CS0 */
+};
+
+static struct mtd_partition palmtc_partitions[] = {
+ {
+ .name = "SmallROM",
+ .size = 0x40000, /* 256kB */
+ .offset = 0,
+ .mask_flags = MTD_WRITEABLE
+ },{
+ .name = "BigROM",
+ .size = 0x7c0000, /* 8MB - 256kB (smallrom) */
+ .offset = 0x40000,
+ .mask_flags = MTD_WRITEABLE,
+ }
+};
+
+#define NUM_PARTITIONS (sizeof(palmtc_partitions)/sizeof(palmtc_partitions[0]))
+
+static int nr_mtd_parts;
+static struct mtd_partition *mtd_parts;
+static const char *probes[] = { "cmdlinepart", NULL };
+
+/*
+ * Initialize FLASH support
+ */
+int __init palmtc_mtd_init(void)
+{
+
+ char *part_type = NULL;
+
+ palmtc_map.virt = ioremap(0x0, 0x1000000);
+
+ if (!palmtc_map.virt) {
+ printk(KERN_ERR "palmtc-flash: ioremap failed\n");
+ return -EIO;
+ }
+
+ simple_map_init(&palmtc_map);
+
+ /* Probe for flash bankwidth 2 */
+ printk(KERN_INFO "palmtc-flash: probing 16bit FLASH\n");
+ mymtd = do_map_probe("cfi_probe", &palmtc_map);
+
+ if (mymtd) {
+ mymtd->owner = THIS_MODULE;
+
+#ifdef CONFIG_MTD_PARTITIONS
+ nr_mtd_parts = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0);
+ if (nr_mtd_parts > 0)
+ part_type = "command line";
+#endif
+ if (nr_mtd_parts <= 0) {
+ mtd_parts = palmtc_partitions;
+ nr_mtd_parts = NUM_PARTITIONS;
+ part_type = "builtin";
+ }
+
+ printk(KERN_INFO "Using %s partition table\n", part_type);
+ add_mtd_partitions(mymtd, mtd_parts, nr_mtd_parts);
+ return 0;
+ }
+
+ iounmap((void *)palmtc_map.virt);
+ return -ENXIO;
+}
+
+/*
+ * Cleanup
+ */
+static void __exit palmtc_mtd_cleanup(void)
+{
+
+ if (mymtd) {
+ del_mtd_partitions(mymtd);
+ map_destroy(mymtd);
+ }
+
+ /* Free partition info, if commandline partition was used */
+ if (mtd_parts && (mtd_parts != palmtc_partitions))
+ kfree (mtd_parts);
+
+ if (palmtc_map.virt) {
+ iounmap((void *)palmtc_map.virt);
+ palmtc_map.virt = 0;
+ }
+}
+
+
+module_init(palmtc_mtd_init);
+module_exit(palmtc_mtd_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marek Vasut <mar...@gm...>");
+MODULE_DESCRIPTION("MTD map for Palm Tungsten|C");
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