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path: root/drivers/mtd/maps/mtx-1_flash.c
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Diffstat (limited to 'drivers/mtd/maps/mtx-1_flash.c')
-rw-r--r--drivers/mtd/maps/mtx-1_flash.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/mtd/maps/mtx-1_flash.c b/drivers/mtd/maps/mtx-1_flash.c
new file mode 100644
index 0000000..d1e66e1
--- /dev/null
+++ b/drivers/mtd/maps/mtx-1_flash.c
@@ -0,0 +1,96 @@
+/*
+ * Flash memory access on 4G Systems MTX-1 boards
+ *
+ * $Id: mtx-1_flash.c,v 1.2 2005/11/07 11:14:27 gleixner Exp $
+ *
+ * (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz>
+ * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+static struct map_info mtx1_map = {
+ .name = "MTX-1 flash",
+ .bankwidth = 4,
+ .size = 0x2000000,
+ .phys = 0x1E000000,
+};
+
+static struct mtd_partition mtx1_partitions[] = {
+ {
+ .name = "filesystem",
+ .size = 0x01C00000,
+ .offset = 0,
+ },{
+ .name = "yamon",
+ .size = 0x00100000,
+ .offset = MTDPART_OFS_APPEND,
+ .mask_flags = MTD_WRITEABLE,
+ },{
+ .name = "kernel",
+ .size = 0x002c0000,
+ .offset = MTDPART_OFS_APPEND,
+ },{
+ .name = "yamon env",
+ .size = 0x00040000,
+ .offset = MTDPART_OFS_APPEND,
+ }
+};
+
+static struct mtd_info *mtx1_mtd;
+
+int __init mtx1_mtd_init(void)
+{
+ int ret = -ENXIO;
+
+ simple_map_init(&mtx1_map);
+
+ mtx1_map.virt = ioremap(mtx1_map.phys, mtx1_map.size);
+ if (!mtx1_map.virt)
+ return -EIO;
+
+ mtx1_mtd = do_map_probe("cfi_probe", &mtx1_map);
+ if (!mtx1_mtd)
+ goto err;
+
+ mtx1_mtd->owner = THIS_MODULE;
+
+ ret = add_mtd_partitions(mtx1_mtd, mtx1_partitions,
+ ARRAY_SIZE(mtx1_partitions));
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ iounmap(mtx1_map.virt);
+ return ret;
+}
+
+static void __exit mtx1_mtd_cleanup(void)
+{
+ if (mtx1_mtd) {
+ del_mtd_partitions(mtx1_mtd);
+ map_destroy(mtx1_mtd);
+ }
+ if (mtx1_map.virt)
+ iounmap(mtx1_map.virt);
+}
+
+module_init(mtx1_mtd_init);
+module_exit(mtx1_mtd_cleanup);
+
+MODULE_AUTHOR("Bruno Randolf <bruno.randolf@4g-systems.biz>");
+MODULE_DESCRIPTION("MTX-1 flash map");
+MODULE_LICENSE("GPL");
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