diff options
Diffstat (limited to 'target/linux/adm5120/files/drivers/mtd/myloader.c')
| -rw-r--r-- | target/linux/adm5120/files/drivers/mtd/myloader.c | 178 |
1 files changed, 0 insertions, 178 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 60ebe22..0000000 --- a/target/linux/adm5120/files/drivers/mtd/myloader.c +++ /dev/null @@ -1,178 +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 <linux/myloader.h> - -#define BLOCK_LEN_MIN 0x10000 -#define PART_NAME_LEN 32 - -struct part_data { - struct mylo_partition_table tab; - char names[MYLO_MAX_PARTITIONS][PART_NAME_LEN]; -}; - -int myloader_parse_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - unsigned long origin) -{ - struct part_data *buf; - 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; - - buf = vmalloc(sizeof(*buf)); - if (!buf) { - return -ENOMEM; - goto out; - } - tab = &buf->tab; - - blocklen = master->erasesize; - if (blocklen < BLOCK_LEN_MIN) - blocklen = BLOCK_LEN_MIN; - - offset = blocklen; - - /* Find the partition table */ - for (i = 0; i < 4; i++, offset += blocklen) { - printk(KERN_DEBUG "%s: searching for MyLoader partition table" - " at offset 0x%lx\n", master->name, offset); - - ret = master->read(master, offset, sizeof(*buf), &retlen, - (void *)buf); - if (ret) - goto out_free_buf; - - if (retlen != sizeof(*buf)) { - ret = -EIO; - goto out_free_buf; - } - - /* Check for Partition Table magic number */ - if (tab->magic == le32_to_cpu(MYLO_MAGIC_PARTITIONS)) - break; - - } - - if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) { - printk(KERN_DEBUG "%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 * PART_NAME_LEN), GFP_KERNEL); - - if (!mtd_parts) { - ret = -ENOMEM; - goto out_free_buf; - } - - mtd_part = mtd_parts; - names = (char *)&mtd_parts[num_parts]; - - strncpy(names, "myloader", PART_NAME_LEN); - mtd_part->name = names; - mtd_part->offset = 0; - mtd_part->size = offset; - mtd_part->mask_flags = MTD_WRITEABLE; - mtd_part++; - names += PART_NAME_LEN; - - strncpy(names, "partition_table", PART_NAME_LEN); - mtd_part->name = names; - mtd_part->offset = offset; - mtd_part->size = blocklen; - mtd_part->mask_flags = MTD_WRITEABLE; - mtd_part++; - names += PART_NAME_LEN; - - for (i = 0; i < MYLO_MAX_PARTITIONS; i++) { - part = &tab->partitions[i]; - - if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE) - continue; - - if (buf->names[i][0]) - strncpy(names, buf->names[i], PART_NAME_LEN); - else - snprintf(names, PART_NAME_LEN, "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 += PART_NAME_LEN; - } - - *pparts = mtd_parts; - ret = num_parts; - - out_free_buf: - vfree(buf); - out: - return ret; -} - -static struct mtd_part_parser myloader_mtd_parser = { - .owner = THIS_MODULE, - .parse_fn = myloader_parse_partitions, - .name = "MyLoader", -}; - -static int __init myloader_mtd_parser_init(void) -{ - return register_mtd_parser(&myloader_mtd_parser); -} - -static void __exit myloader_mtd_parser_exit(void) -{ - deregister_mtd_parser(&myloader_mtd_parser); -} - -module_init(myloader_mtd_parser_init); -module_exit(myloader_mtd_parser_exit); - -MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); -MODULE_DESCRIPTION("Parsing code for MyLoader partition tables"); -MODULE_LICENSE("GPL v2"); |