1 files changed, 136 insertions, 0 deletions
diff --git a/linux-2.4.x/drivers/mtd/maps/omap-toto-flash.c b/linux-2.4.x/drivers/mtd/maps/omap-toto-flash.c
new file mode 100644
index 0000000..e655c08
--- /dev/null
+++ b/linux-2.4.x/drivers/mtd/maps/omap-toto-flash.c
@@ -0,0 +1,136 @@
+/*
+ * NOR Flash memory access on TI Toto board
+ *
+ * jzhang@ti.com (C) 2003 Texas Instruments.
+ *
+ *  (C) 2002 MontVista Software, Inc.
+ *
+ * $Id: omap-toto-flash.c,v 1.6 2005/11/29 20:01:28 gleixner Exp $
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.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>
+
+
+#ifndef CONFIG_ARCH_OMAP
+#error This is for OMAP architecture only
+#endif
+
+//these lines need be moved to a hardware header file
+#define OMAP_TOTO_FLASH_BASE 0xd8000000
+#define OMAP_TOTO_FLASH_SIZE 0x80000
+
+static struct map_info omap_toto_map_flash = {
+	.name =		"OMAP Toto flash",
+	.bankwidth =	2,
+	.virt =		(void __iomem *)OMAP_TOTO_FLASH_BASE,
+};
+
+
+static struct mtd_partition toto_flash_partitions[] = {
+	{
+		.name =		"BootLoader",
+		.size =		0x00040000,     /* hopefully u-boot will stay 128k + 128*/
+		.offset =	0,
+		.mask_flags =	MTD_WRITEABLE,  /* force read-only */
+	}, {
+		.name =		"ReservedSpace",
+		.size =		0x00030000,
+		.offset =	MTDPART_OFS_APPEND,
+		//mask_flags:	MTD_WRITEABLE,  /* force read-only */
+	}, {
+		.name =		"EnvArea",      /* bottom 64KiB for env vars */
+		.size =		MTDPART_SIZ_FULL,
+		.offset =	MTDPART_OFS_APPEND,
+	}
+};
+
+static struct mtd_partition *parsed_parts;
+
+static struct mtd_info *flash_mtd;
+
+static int __init init_flash (void)
+{
+
+	struct mtd_partition *parts;
+	int nb_parts = 0;
+	int parsed_nr_parts = 0;
+	const char *part_type;
+
+	/*
+	 * Static partition definition selection
+	 */
+	part_type = "static";
+
+ 	parts = toto_flash_partitions;
+	nb_parts = ARRAY_SIZE(toto_flash_partitions);
+	omap_toto_map_flash.size = OMAP_TOTO_FLASH_SIZE;
+	omap_toto_map_flash.phys = virt_to_phys(OMAP_TOTO_FLASH_BASE);
+
+	simple_map_init(&omap_toto_map_flash);
+	/*
+	 * Now let's probe for the actual flash.  Do it here since
+	 * specific machine settings might have been set above.
+	 */
+	printk(KERN_NOTICE "OMAP toto flash: probing %d-bit flash bus\n",
+		omap_toto_map_flash.bankwidth*8);
+	flash_mtd = do_map_probe("jedec_probe", &omap_toto_map_flash);
+	if (!flash_mtd)
+		return -ENXIO;
+
+ 	if (parsed_nr_parts > 0) {
+		parts = parsed_parts;
+		nb_parts = parsed_nr_parts;
+	}
+
+	if (nb_parts == 0) {
+		printk(KERN_NOTICE "OMAP toto flash: no partition info available,"
+			"registering whole flash at once\n");
+		if (add_mtd_device(flash_mtd)){
+            return -ENXIO;
+        }
+	} else {
+		printk(KERN_NOTICE "Using %s partition definition\n",
+			part_type);
+		return add_mtd_partitions(flash_mtd, parts, nb_parts);
+	}
+	return 0;
+}
+
+int __init omap_toto_mtd_init(void)
+{
+	int status;
+
+ 	if (status = init_flash()) {
+		printk(KERN_ERR "OMAP Toto Flash: unable to init map for toto flash\n");
+	}
+    return status;
+}
+
+static void  __exit omap_toto_mtd_cleanup(void)
+{
+	if (flash_mtd) {
+		del_mtd_partitions(flash_mtd);
+		map_destroy(flash_mtd);
+		kfree(parsed_parts);
+	}
+}
+
+module_init(omap_toto_mtd_init);
+module_exit(omap_toto_mtd_cleanup);
+
+MODULE_AUTHOR("Jian Zhang");
+MODULE_DESCRIPTION("OMAP Toto board map driver");
+MODULE_LICENSE("GPL");