1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c
new file mode 100644
index 00000000000..8b0da394f3f
--- /dev/null
+++ b/drivers/mtd/maps/edb7312.c
@@ -0,0 +1,147 @@
+/*
+ * $Id: edb7312.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $
+ *
+ * Handle mapping of the NOR flash on Cogent EDB7312 boards
+ *
+ * Copyright 2002 SYSGO Real-Time Solutions GmbH
+ * 
+ * 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/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/config.h>
+
+#ifdef CONFIG_MTD_PARTITIONS
+#include <linux/mtd/partitions.h>
+#endif
+
+#define WINDOW_ADDR 0x00000000      /* physical properties of flash */
+#define WINDOW_SIZE 0x01000000
+#define BUSWIDTH    2
+#define FLASH_BLOCKSIZE_MAIN	0x20000
+#define FLASH_NUMBLOCKS_MAIN	128
+/* can be "cfi_probe", "jedec_probe", "map_rom", NULL }; */
+#define PROBETYPES { "cfi_probe", NULL }
+
+#define MSG_PREFIX "EDB7312-NOR:"   /* prefix for our printk()'s */
+#define MTDID      "edb7312-nor"    /* for mtdparts= partitioning */
+
+static struct mtd_info *mymtd;
+
+struct map_info edb7312nor_map = {
+	.name = "NOR flash on EDB7312",
+	.size = WINDOW_SIZE,
+	.bankwidth = BUSWIDTH,
+	.phys = WINDOW_ADDR,
+};
+
+#ifdef CONFIG_MTD_PARTITIONS
+
+/*
+ * MTD partitioning stuff 
+ */
+static struct mtd_partition static_partitions[3] =
+{
+	{
+		.name = "ARMboot",
+		.size = 0x40000,
+		.offset = 0
+	},
+	{
+		.name = "Kernel",
+		.size = 0x200000,
+		.offset = 0x40000
+	},
+	{
+		.name = "RootFS",
+		.size = 0xDC0000,
+		.offset = 0x240000
+	},
+};
+
+static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+#endif
+
+static int                   mtd_parts_nb = 0;
+static struct mtd_partition *mtd_parts    = 0;
+
+int __init init_edb7312nor(void)
+{
+	static const char *rom_probe_types[] = PROBETYPES;
+	const char **type;
+	const char *part_type = 0;
+
+       	printk(KERN_NOTICE MSG_PREFIX "0x%08x at 0x%08x\n", 
+	       WINDOW_SIZE, WINDOW_ADDR);
+	edb7312nor_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+	if (!edb7312nor_map.virt) {
+		printk(MSG_PREFIX "failed to ioremap\n");
+		return -EIO;
+	}
+	
+	simple_map_init(&edb7312nor_map);
+
+	mymtd = 0;
+	type = rom_probe_types;
+	for(; !mymtd && *type; type++) {
+		mymtd = do_map_probe(*type, &edb7312nor_map);
+	}
+	if (mymtd) {
+		mymtd->owner = THIS_MODULE;
+
+#ifdef CONFIG_MTD_PARTITIONS
+		mtd_parts_nb = parse_mtd_partitions(mymtd, probes, &mtd_parts, MTDID);
+		if (mtd_parts_nb > 0)
+		  part_type = "detected";
+
+		if (mtd_parts_nb == 0)
+		{
+			mtd_parts = static_partitions;
+			mtd_parts_nb = ARRAY_SIZE(static_partitions);
+			part_type = "static";
+		}
+#endif
+		add_mtd_device(mymtd);
+		if (mtd_parts_nb == 0)
+		  printk(KERN_NOTICE MSG_PREFIX "no partition info available\n");
+		else
+		{
+			printk(KERN_NOTICE MSG_PREFIX
+			       "using %s partition definition\n", part_type);
+			add_mtd_partitions(mymtd, mtd_parts, mtd_parts_nb);
+		}
+		return 0;
+	}
+
+	iounmap((void *)edb7312nor_map.virt);
+	return -ENXIO;
+}
+
+static void __exit cleanup_edb7312nor(void)
+{
+	if (mymtd) {
+		del_mtd_device(mymtd);
+		map_destroy(mymtd);
+	}
+	if (edb7312nor_map.virt) {
+		iounmap((void *)edb7312nor_map.virt);
+		edb7312nor_map.virt = 0;
+	}
+}
+
+module_init(init_edb7312nor);
+module_exit(cleanup_edb7312nor);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marius Groeger <mag@sysgo.de>");
+MODULE_DESCRIPTION("Generic configurable MTD map driver");