[adm5120] move MyLoader partition parser into generic files, will be used on ar71xx

[openwrt.git] / target / linux / adm5120 / files / drivers / mtd / myloader.c

diff --git a/target/linux/adm5120/files/drivers/mtd/myloader.c b/target/linux/adm5120/files/drivers/mtd/myloader.c
deleted file mode 100644 (file)
index 22d076b..0000000
--- a/target/linux/adm5120/files/drivers/mtd/myloader.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- *  Parse MyLoader-style flash partition tables and produce a Linux partition
- *  array to match.
- *
- *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
- *
- *  This file was based on drivers/mtd/redboot.c
- *  Author: Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.com>
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/byteorder/generic.h>
-
-#include <prom/myloader.h>
-
-#define NAME_LEN_MAX           20
-#define NAME_MYLOADER          "MyLoader"
-#define NAME_PARTITION_TABLE   "Partition Table"
-#define BLOCK_LEN_MIN          0x10000
-
-int parse_myloader_partitions(struct mtd_info *master,
-                       struct mtd_partition **pparts,
-                       unsigned long origin)
-{
-       struct mylo_partition_table *tab;
-       struct mylo_partition *part;
-       struct mtd_partition *mtd_parts;
-       struct mtd_partition *mtd_part;
-       int num_parts;
-       int ret, i;
-       size_t retlen;
-       char *names;
-       unsigned long offset;
-       unsigned long blocklen;
-
-       tab = vmalloc(sizeof(*tab));
-       if (!tab) {
-               return -ENOMEM;
-               goto out;
-       }
-
-       blocklen = master->erasesize;
-       if (blocklen < BLOCK_LEN_MIN)
-               blocklen = BLOCK_LEN_MIN;
-
-       /* Partition Table is always located on the second erase block */
-       offset = blocklen;
-       printk(KERN_NOTICE "%s: searching for MyLoader partition table at "
-                       "offset 0x%lx\n", master->name, offset);
-
-       ret = master->read(master, offset, sizeof(*tab), &retlen, (void *)tab);
-       if (ret)
-               goto out;
-
-       if (retlen != sizeof(*tab)) {
-               ret = -EIO;
-               goto out_free_buf;
-       }
-
-       /* Check for Partition Table magic number */
-       if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) {
-               printk(KERN_NOTICE "%s: no MyLoader partition table found\n",
-                       master->name);
-               ret = 0;
-               goto out_free_buf;
-       }
-
-       /* The MyLoader and the Partition Table is always present */
-       num_parts = 2;
-
-       /* Detect number of used partitions */
-       for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
-               part = &tab->partitions[i];
-
-               if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
-                       continue;
-
-               num_parts++;
-       }
-
-       mtd_parts = kzalloc((num_parts * sizeof(*mtd_part) +
-                               num_parts * NAME_LEN_MAX), GFP_KERNEL);
-
-       if (!mtd_parts) {
-               ret = -ENOMEM;
-               goto out_free_buf;
-       }
-
-       mtd_part = mtd_parts;
-       names = (char *)&mtd_parts[num_parts];
-
-       strncpy(names, NAME_MYLOADER, NAME_LEN_MAX-1);
-       mtd_part->name = names;
-       mtd_part->offset = 0;
-       mtd_part->size = blocklen;
-       mtd_part->mask_flags = MTD_WRITEABLE;
-       mtd_part++;
-       names += NAME_LEN_MAX;
-
-       strncpy(names, NAME_PARTITION_TABLE, NAME_LEN_MAX-1);
-       mtd_part->name = names;
-       mtd_part->offset = blocklen;
-       mtd_part->size = blocklen;
-       mtd_part->mask_flags = MTD_WRITEABLE;
-       mtd_part++;
-       names += NAME_LEN_MAX;
-
-       for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
-               part = &tab->partitions[i];
-
-               if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
-                       continue;
-
-               sprintf(names, "partition%d", i);
-               mtd_part->offset = le32_to_cpu(part->addr);
-               mtd_part->size = le32_to_cpu(part->size);
-               mtd_part->name = names;
-               mtd_part++;
-               names += NAME_LEN_MAX;
-       }
-
-       *pparts = mtd_parts;
-       ret = num_parts;
-
-out_free_buf:
-       vfree(tab);
-out:
-       return ret;
-}
-
-static struct mtd_part_parser mylo_mtd_parser = {
-       .owner = THIS_MODULE,
-       .parse_fn = parse_myloader_partitions,
-       .name = NAME_MYLOADER,
-};
-
-static int __init mylo_mtd_parser_init(void)
-{
-       return register_mtd_parser(&mylo_mtd_parser);
-}
-
-static void __exit mylo_mtd_parser_exit(void)
-{
-       deregister_mtd_parser(&mylo_mtd_parser);
-}
-
-module_init(mylo_mtd_parser_init);
-module_exit(mylo_mtd_parser_exit);
-
-MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-MODULE_DESCRIPTION("Parsing code for MyLoader partition tables");
-MODULE_LICENSE("GPL v2");