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path: root/drivers/mtd/maps/ts5500_flash.c
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Diffstat (limited to 'drivers/mtd/maps/ts5500_flash.c')
-rw-r--r--drivers/mtd/maps/ts5500_flash.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c
new file mode 100644
index 000000000..9969fedb1
--- /dev/null
+++ b/drivers/mtd/maps/ts5500_flash.c
@@ -0,0 +1,121 @@
+/*
+ * ts5500_flash.c -- MTD map driver for Technology Systems TS-5500 board
+ *
+ * Copyright (C) 2004 Sean Young <sean@mess.org>
+ *
+ * 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
+ *
+ * Note:
+ * - In order for detection to work, jumper 3 must be set.
+ * - Drive A and B use the resident flash disk (RFD) flash translation layer.
+ * - If you have created your own jffs file system and the bios overwrites
+ * it during boot, try disabling Drive A: and B: in the boot order.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/types.h>
+
+
+#define WINDOW_ADDR 0x09400000
+#define WINDOW_SIZE 0x00200000
+
+static struct map_info ts5500_map = {
+ .name = "TS-5500 Flash",
+ .size = WINDOW_SIZE,
+ .bankwidth = 1,
+ .phys = WINDOW_ADDR
+};
+
+static struct mtd_partition ts5500_partitions[] = {
+ {
+ .name = "Drive A",
+ .offset = 0,
+ .size = 0x0e0000
+ },
+ {
+ .name = "BIOS",
+ .offset = 0x0e0000,
+ .size = 0x020000,
+ },
+ {
+ .name = "Drive B",
+ .offset = 0x100000,
+ .size = 0x100000
+ }
+};
+
+#define NUM_PARTITIONS ARRAY_SIZE(ts5500_partitions)
+
+static struct mtd_info *mymtd;
+
+static int __init init_ts5500_map(void)
+{
+ int rc = 0;
+
+ ts5500_map.virt = ioremap_nocache(ts5500_map.phys, ts5500_map.size);
+
+ if (!ts5500_map.virt) {
+ printk(KERN_ERR "Failed to ioremap_nocache\n");
+ rc = -EIO;
+ goto err2;
+ }
+
+ simple_map_init(&ts5500_map);
+
+ mymtd = do_map_probe("jedec_probe", &ts5500_map);
+ if (!mymtd)
+ mymtd = do_map_probe("map_rom", &ts5500_map);
+
+ if (!mymtd) {
+ rc = -ENXIO;
+ goto err1;
+ }
+
+ mymtd->owner = THIS_MODULE;
+ mtd_device_register(mymtd, ts5500_partitions, NUM_PARTITIONS);
+
+ return 0;
+
+err1:
+ iounmap(ts5500_map.virt);
+err2:
+ return rc;
+}
+
+static void __exit cleanup_ts5500_map(void)
+{
+ if (mymtd) {
+ mtd_device_unregister(mymtd);
+ map_destroy(mymtd);
+ }
+
+ if (ts5500_map.virt) {
+ iounmap(ts5500_map.virt);
+ ts5500_map.virt = NULL;
+ }
+}
+
+module_init(init_ts5500_map);
+module_exit(cleanup_ts5500_map);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sean Young <sean@mess.org>");
+MODULE_DESCRIPTION("MTD map driver for Technology Systems TS-5500 board");
+