diff options
Diffstat (limited to 'target/linux/adm5120/files/drivers/mtd/myloader.c')
| -rw-r--r-- | target/linux/adm5120/files/drivers/mtd/myloader.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/target/linux/adm5120/files/drivers/mtd/myloader.c b/target/linux/adm5120/files/drivers/mtd/myloader.c deleted file mode 100644 index 9dab9d1..0000000 --- a/target/linux/adm5120/files/drivers/mtd/myloader.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * $Id$ - * - * Parse MyLoader-style flash partition tables and produce a Linux partition - * array to match. - * - * Copyright (C) 2007 OpenWrt.org - * Copyright (C) 2007 Gabor Juhos <juhosg at 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 at openwrt.org>"); -MODULE_DESCRIPTION("Parsing code for MyLoader partition tables"); -MODULE_LICENSE("GPL v2"); |