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authorkaloz <kaloz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-24 12:44:44 +0000
committerkaloz <kaloz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-24 12:44:44 +0000
commitda2d341c2857cd8fb09d41b2832bf2a33d543af3 (patch)
tree24270bf47b026fd9faa056bff60d347749226b99 /target/linux/magicbox-2.6/files/drivers/mtd
parent685bac6aca74abee18640fbab2a66aadd11dc754 (diff)
fix Magicbox for .21 and convert to the new structure
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7328 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/magicbox-2.6/files/drivers/mtd')
-rw-r--r--target/linux/magicbox-2.6/files/drivers/mtd/maps/magicmap.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/target/linux/magicbox-2.6/files/drivers/mtd/maps/magicmap.c b/target/linux/magicbox-2.6/files/drivers/mtd/maps/magicmap.c
new file mode 100644
index 000000000..b654a3d9b
--- /dev/null
+++ b/target/linux/magicbox-2.6/files/drivers/mtd/maps/magicmap.c
@@ -0,0 +1,113 @@
+/*
+ * magicmap.c: Copyleft 2005 Karol Lewandowski
+ *
+ * Mapping for MagicBox flash.
+ * Based on walnut.c.
+ *
+ * Heikki Lindholm <holindho@infradead.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.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/autoconf.h>
+#include <asm/io.h>
+
+static struct mtd_info *flash;
+
+static struct map_info magic_map = {
+ .name = "Magically mapped flash",
+ .phys = 0xffc00000,
+ .size = 0x400000,
+ .bankwidth = 2,
+};
+
+static struct mtd_partition magic_partitions[] = {
+ {
+ .name = "linux",
+ .offset = 0x0,
+ .size = 0x3c0000,
+ },
+ {
+ .name = "rootfs",
+ .offset = 0x100000,
+ .size = 0x2c0000,
+ },
+ {
+ .name = "bootloader",
+ .offset = 0x3c0000,
+ .size = 0x040000,
+ .mask_flags = MTD_WRITEABLE,
+ },
+};
+
+int __init init_magic(void)
+{
+ u32 size, len;
+
+ magic_map.virt =
+ (void __iomem *)ioremap(magic_map.phys, magic_map.size);
+
+ if (!magic_map.virt) {
+ printk("Failed to ioremap flash.\n");
+ return -EIO;
+ }
+
+ simple_map_init(&magic_map);
+
+ flash = do_map_probe("cfi_probe", &magic_map);
+ if (flash) {
+ flash->owner = THIS_MODULE;
+ if (flash->read(flash, 12, sizeof(u32), &len, (char *) &size) ||
+ len != 4)
+ return -ENXIO;
+ size += 0x40; /* header size of the uImage */
+ if (size < 0x400000) {
+ /* skip to next erase block */
+ if (size & (flash->erasesize - 1)) {
+ size |= (flash->erasesize - 1);
+ size += 1;
+ }
+ magic_partitions[1].offset = size;
+ magic_partitions[1].size = magic_partitions[2].offset - size;
+ }
+
+ add_mtd_partitions(flash, magic_partitions,
+ ARRAY_SIZE(magic_partitions));
+ } else {
+ printk("map probe failed for flash\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static void __exit cleanup_magic(void)
+{
+ if (flash) {
+ del_mtd_partitions(flash);
+ map_destroy(flash);
+ }
+
+ if (magic_map.virt) {
+ iounmap((void *)magic_map.virt);
+ magic_map.virt = NULL;
+ }
+}
+
+module_init(init_magic);
+module_exit(cleanup_magic);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Karol Lewandowski");
+MODULE_DESCRIPTION("MTD map and partitions for IBM 405EP MagicBox boards");