1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/mtd/maps/arctic-mtd.c b/drivers/mtd/maps/arctic-mtd.c
new file mode 100644
index 00000000000..777276fd0e1
--- /dev/null
+++ b/drivers/mtd/maps/arctic-mtd.c
@@ -0,0 +1,135 @@
+/*
+ * $Id: arctic-mtd.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $
+ * 
+ * drivers/mtd/maps/arctic-mtd.c MTD mappings and partition tables for 
+ *                              IBM 405LP Arctic boards.
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Copyright (C) 2002, International Business Machines Corporation
+ * All Rights Reserved.
+ *
+ * Bishop Brock
+ * IBM Research, Austin Center for Low-Power Computing
+ * bcbrock@us.ibm.com
+ * March 2002
+ *
+ * modified for Arctic by,
+ * David Gibson
+ * IBM OzLabs, Canberra, Australia
+ * <arctic@gibson.dropbear.id.au>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+#include <asm/ibm4xx.h>
+
+/*
+ * 0 : 0xFE00 0000 - 0xFEFF FFFF : Filesystem 1 (16MiB)
+ * 1 : 0xFF00 0000 - 0xFF4F FFFF : kernel (5.12MiB)
+ * 2 : 0xFF50 0000 - 0xFFF5 FFFF : Filesystem 2 (10.624MiB) (if non-XIP)
+ * 3 : 0xFFF6 0000 - 0xFFFF FFFF : PIBS Firmware (640KiB)
+ */
+
+#define FFS1_SIZE	0x01000000 /* 16MiB */
+#define KERNEL_SIZE	0x00500000 /* 5.12MiB */
+#define FFS2_SIZE	0x00a60000 /* 10.624MiB */
+#define FIRMWARE_SIZE	0x000a0000 /* 640KiB */
+
+
+#define NAME     	"Arctic Linux Flash"
+#define PADDR    	SUBZERO_BOOTFLASH_PADDR
+#define BUSWIDTH	2
+#define SIZE		SUBZERO_BOOTFLASH_SIZE
+#define PARTITIONS	4
+
+/* Flash memories on these boards are memory resources, accessed big-endian. */
+
+{
+  /* do nothing for now */
+}
+
+static struct map_info arctic_mtd_map = {
+	.name		= NAME,
+	.size		= SIZE,
+	.bankwidth	= BUSWIDTH,
+	.phys		= PADDR,
+};
+
+static struct mtd_info *arctic_mtd;
+
+static struct mtd_partition arctic_partitions[PARTITIONS] = {
+	{ .name		= "Filesystem",
+	  .size		= FFS1_SIZE,
+	  .offset	= 0,},
+        { .name		= "Kernel",
+	  .size		= KERNEL_SIZE,
+	  .offset	= FFS1_SIZE,},
+	{ .name		= "Filesystem",
+	  .size		= FFS2_SIZE,
+	  .offset	= FFS1_SIZE + KERNEL_SIZE,},
+	{ .name		= "Firmware",
+	  .size		= FIRMWARE_SIZE,
+	  .offset	= SUBZERO_BOOTFLASH_SIZE - FIRMWARE_SIZE,},
+};
+
+static int __init
+init_arctic_mtd(void)
+{
+	printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
+
+	arctic_mtd_map.virt = ioremap(PADDR, SIZE);
+
+	if (!arctic_mtd_map.virt) {
+		printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
+		return -EIO;
+	}
+	simple_map_init(&arctic_mtd_map);
+
+	printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
+	arctic_mtd = do_map_probe("cfi_probe", &arctic_mtd_map);
+
+	if (!arctic_mtd)
+		return -ENXIO;
+
+	arctic_mtd->owner = THIS_MODULE;
+
+	return add_mtd_partitions(arctic_mtd, arctic_partitions, PARTITIONS);
+}
+
+static void __exit
+cleanup_arctic_mtd(void)
+{
+	if (arctic_mtd) {
+		del_mtd_partitions(arctic_mtd);
+		map_destroy(arctic_mtd);
+		iounmap((void *) arctic_mtd_map.virt);
+	}
+}
+
+module_init(init_arctic_mtd);
+module_exit(cleanup_arctic_mtd);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Gibson <arctic@gibson.dropbear.id.au>");
+MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Arctic boards");