diff options
| -rw-r--r-- | target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c | 174 |
1 files changed, 106 insertions, 68 deletions
diff --git a/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c index d76be1a39c..da54e0ff49 100644 --- a/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c +++ b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c @@ -1,5 +1,6 @@ /* - * Copyright © 2009 Christian Daniel <cd@maintech.de> + * Copyright (C) 2009 Christian Daniel <cd@maintech.de> + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.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 @@ -22,11 +23,22 @@ #include <linux/kernel.h> #include <linux/slab.h> +#include <linux/vmalloc.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> -#include <linux/bootmem.h> -#include <linux/magic.h> + +struct cybertan_header { + char magic[4]; + u8 res1[4]; + char fw_date[3]; + char fw_ver[3]; + char id[4]; + char hw_ver; + char unused; + u8 flags[2]; + u8 res2[10]; +}; #define TRX_PARTS 6 #define TRX_MAGIC 0x30524448 @@ -58,91 +70,117 @@ struct uimage_header { uint8_t ih_name[IH_NMLEN]; /* Image Name */ }; +struct wrt160nl_header { + struct cybertan_header cybertan; + struct trx_header trx; + struct uimage_header uimage; +} __attribute__ ((packed)); + static struct mtd_partition trx_parts[TRX_PARTS]; -static int create_mtd_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - unsigned long origin) +static int wrt160nl_parse_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + unsigned long origin) { - uint8_t buf[512]; - int len; - struct trx_header *header; + struct wrt160nl_header *header; + struct trx_header *theader; struct uimage_header *uheader; + size_t retlen; unsigned int kernel_len; + int ret; + + header = vmalloc(sizeof(*header)); + if (!header) { + return -ENOMEM; + goto out; + } + + ret = master->read(master, 4 * master->erasesize, sizeof(*header), + &retlen, (void *) header); + if (ret) + goto free_hdr; - master->read(master, 4 * master->erasesize, sizeof(buf), &len, buf); - if (strncmp(buf, "NL16", 4) == 0) { - printk(KERN_INFO "TRX on WRT160NL detected\n"); + if (retlen != sizeof(*header)) { + ret = -EIO; + goto free_hdr; + } - header = (struct trx_header *)(buf + 32); - if (le32_to_cpu(header->magic) != TRX_MAGIC) { - printk(KERN_WARNING "TRX messed up\n"); - return 0; - } + if (strncmp(header->cybertan.magic, "NL16", 4) != 0) { + printk(KERN_NOTICE "%s: no WRT160NL signature found\n", + master->name); + goto free_hdr; + } - uheader = (struct uimage_header *)(buf + 60); - if (uheader->ih_magic != IH_MAGIC) { - printk(KERN_WARNING "uImage messed up\n"); - return 0; - } + theader = &header->trx; + if (le32_to_cpu(theader->magic) != TRX_MAGIC) { + printk(KERN_NOTICE "%s: no TRX header found\n", master->name); + goto free_hdr; + } - kernel_len = uheader->ih_size / master->erasesize; - if (uheader->ih_size % master->erasesize) - kernel_len++; + uheader = &header->uimage; + if (uheader->ih_magic != IH_MAGIC) { + printk(KERN_NOTICE "%s: no uImage found\n", master->name); + goto free_hdr; + } + kernel_len = uheader->ih_size / master->erasesize; + if (uheader->ih_size % master->erasesize) kernel_len++; - kernel_len *= master->erasesize; - - trx_parts[0].name = "u-boot"; - trx_parts[0].offset = 0; - trx_parts[0].size = 4 * master->erasesize; - trx_parts[0].mask_flags = MTD_WRITEABLE; - - trx_parts[1].name = "kernel"; - trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size; - trx_parts[1].size = kernel_len; - trx_parts[1].mask_flags = 0; - - trx_parts[2].name = "rootfs"; - trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size; - trx_parts[2].size = master->size - 6 * master->erasesize - trx_parts[1].size; - trx_parts[2].mask_flags = 0; - - trx_parts[3].name = "nvram"; - trx_parts[3].offset = master->size - 2 * master->erasesize; - trx_parts[3].size = master->erasesize; - trx_parts[3].mask_flags = MTD_WRITEABLE; - - trx_parts[4].name = "art"; - trx_parts[4].offset = master->size - master->erasesize; - trx_parts[4].size = master->erasesize; - trx_parts[4].mask_flags = MTD_WRITEABLE; - - trx_parts[5].name = "firmware"; - trx_parts[5].offset = 4 * master->erasesize; - trx_parts[5].size = master->size - 6 * master->erasesize; - trx_parts[5].mask_flags = 0; - - *pparts = trx_parts; - - return TRX_PARTS; - } else { - return 0; - } + + kernel_len++; + kernel_len *= master->erasesize; + + trx_parts[0].name = "u-boot"; + trx_parts[0].offset = 0; + trx_parts[0].size = 4 * master->erasesize; + trx_parts[0].mask_flags = MTD_WRITEABLE; + + trx_parts[1].name = "kernel"; + trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size; + trx_parts[1].size = kernel_len; + trx_parts[1].mask_flags = 0; + + trx_parts[2].name = "rootfs"; + trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size; + trx_parts[2].size = master->size - 6 * master->erasesize - trx_parts[1].size; + trx_parts[2].mask_flags = 0; + + trx_parts[3].name = "nvram"; + trx_parts[3].offset = master->size - 2 * master->erasesize; + trx_parts[3].size = master->erasesize; + trx_parts[3].mask_flags = MTD_WRITEABLE; + + trx_parts[4].name = "art"; + trx_parts[4].offset = master->size - master->erasesize; + trx_parts[4].size = master->erasesize; + trx_parts[4].mask_flags = MTD_WRITEABLE; + + trx_parts[5].name = "firmware"; + trx_parts[5].offset = 4 * master->erasesize; + trx_parts[5].size = master->size - 6 * master->erasesize; + trx_parts[5].mask_flags = 0; + + *pparts = trx_parts; + ret = TRX_PARTS; + + free_hdr: + vfree(header); + out: + return ret; } -static struct mtd_part_parser trx_parser = { +static struct mtd_part_parser wrt160nl_parser = { .owner = THIS_MODULE, - .parse_fn = create_mtd_partitions, + .parse_fn = wrt160nl_parse_partitions, .name = "wrt160nl", }; -static int __init trx_parser_init(void) +static int __init wrt160nl_parser_init(void) { - return register_mtd_parser(&trx_parser); + return register_mtd_parser(&wrt160nl_parser); } -module_init(trx_parser_init); +module_init(wrt160nl_parser_init); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Christian Daniel <cd@maintech.de>"); |