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Diffstat (limited to 'drivers/mtd/maps/ts5500_flash.c')
-rw-r--r--drivers/mtd/maps/ts5500_flash.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c
new file mode 100644
index 0000000000..70d6e865f5
--- /dev/null
+++ b/drivers/mtd/maps/ts5500_flash.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ts5500_flash.c -- MTD map driver for Technology Systems TS-5500 board
+ *
+ * Copyright (C) 2004 Sean Young <sean@mess.org>
+ *
+ * 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 const 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(ts5500_map.phys, ts5500_map.size);
+
+ if (!ts5500_map.virt) {
+ printk(KERN_ERR "Failed to ioremap\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");
+