diff options
Diffstat (limited to 'target/linux/adm5120/files/arch')
-rw-r--r-- | target/linux/adm5120/files/arch/mips/adm5120/Makefile | 2 | ||||
-rw-r--r-- | target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c | 208 |
2 files changed, 0 insertions, 210 deletions
diff --git a/target/linux/adm5120/files/arch/mips/adm5120/Makefile b/target/linux/adm5120/files/arch/mips/adm5120/Makefile index 583d1d12c1..2a5f391f25 100644 --- a/target/linux/adm5120/files/arch/mips/adm5120/Makefile +++ b/target/linux/adm5120/files/arch/mips/adm5120/Makefile @@ -9,5 +9,3 @@ obj-y += gpio.o obj-y += platform.o obj-y += reset.o obj-y += time.o - -obj-y += trxsplit.o diff --git a/target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c b/target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c deleted file mode 100644 index 941f306950..0000000000 --- a/target/linux/adm5120/files/arch/mips/adm5120/trxsplit.c +++ /dev/null @@ -1,208 +0,0 @@ -/* - * $Id$ - * - * Copyright (C) 2007 OpenWrt.org - * Copyright (C) Gabor Juhos <juhosg at 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 the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the - * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/list.h> -#include <linux/kmod.h> -#include <linux/root_dev.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/partitions.h> - -#include <linux/byteorder/generic.h> - -#define PFX "trxsplit: " - -#define TRX_MAGIC 0x30524448 /* "HDR0" */ -#define TRX_VERSION 1 -#define TRX_MAX_LEN 0x3A0000 -#define TRX_NO_HEADER 1 /* Do not write TRX header */ -#define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */ -#define TRX_MAX_OFFSET 3 -#define TRX_MIN_KERNEL_SIZE 256*1024 - -struct trx_header { - u32 magic; /* "HDR0" */ - u32 len; /* Length of file including header */ - u32 crc32; /* 32-bit CRC from flag_version to end of file */ - u32 flag_version; /* 0:15 flags, 16:31 version */ - u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */ -}; - -#define BLOCK_LEN_MIN 0x10000 - -static struct mtd_info *trx_mtd = NULL; -static unsigned long trx_offset = 0; -static int trx_nr_parts = 0; -static struct mtd_partition trx_parts[TRX_MAX_OFFSET]; -static struct trx_header trx_hdr; - -static int __init trxsplit_checktrx(struct mtd_info *mtd, unsigned long offset) -{ - size_t retlen; - int err; - - err = mtd->read(mtd, offset, sizeof(trx_hdr), &retlen, (void *)&trx_hdr); - if (err) { - printk(KERN_ALERT PFX "unable to read from '%s'\n", mtd->name); - goto err_out; - } - - if (retlen != sizeof(trx_hdr)) { - printk(KERN_ALERT PFX "reading failed on '%s'\n", mtd->name); - goto err_out; - } - - trx_hdr.magic = le32_to_cpu(trx_hdr.magic); - trx_hdr.len = le32_to_cpu(trx_hdr.len); - trx_hdr.crc32 = le32_to_cpu(trx_hdr.crc32); - trx_hdr.flag_version = le32_to_cpu(trx_hdr.flag_version); - trx_hdr.offsets[0] = le32_to_cpu(trx_hdr.offsets[0]); - trx_hdr.offsets[1] = le32_to_cpu(trx_hdr.offsets[1]); - trx_hdr.offsets[2] = le32_to_cpu(trx_hdr.offsets[2]); - - /* sanity checks */ - if (trx_hdr.magic != TRX_MAGIC) - goto err_out; - - if (trx_hdr.len > mtd->size - offset) - goto err_out; - - /* TODO: add crc32 checking too? */ - - return 0; - -err_out: - return -1; -} - -static int __init trxsplit_create_partitions(void) -{ - struct mtd_partition *part = trx_parts; - int ret = 0; - int i; - - if (trx_mtd == NULL) - goto out; - - printk(KERN_INFO PFX "creating TRX partitions in '%s' (%d,%d)\n", - trx_mtd->name, MTD_BLOCK_MAJOR, trx_mtd->index); - - for (i=0; i<TRX_MAX_OFFSET;i++) { - part = &trx_parts[i]; - if (trx_hdr.offsets[i] == 0) - continue; - part->offset = trx_offset + trx_hdr.offsets[i]; - trx_nr_parts++; - } - - for (i=0; i<trx_nr_parts-1; i++) { - trx_parts[i].size = trx_parts[i+1].offset - trx_parts[i].offset; - } - trx_parts[i].size = trx_mtd->size - trx_parts[i].offset; - - i=0; - part = &trx_parts[i]; - if (part->size < TRX_MIN_KERNEL_SIZE) { - part->name = "loader"; - i++; - } - - part = &trx_parts[i]; - part->name = "kernel"; - i++; - - part = &trx_parts[i]; - part->name = "rootfs"; - - ret = add_mtd_partitions(trx_mtd, trx_parts, trx_nr_parts); - if (ret) { - printk(KERN_ALERT PFX "creating TRX partitions failed\n"); - } - -out: - return ret; -} - -static void __init trxsplit_add_mtd(struct mtd_info *mtd) -{ - unsigned long offset; - unsigned long blocklen; - int err; - - if (trx_mtd) - return; - - blocklen = mtd->erasesize; - if (blocklen < BLOCK_LEN_MIN) - blocklen = BLOCK_LEN_MIN; - - printk(KERN_INFO PFX "searching TRX header in '%s'\n", mtd->name); - - err = 0; - for (offset=0; offset < mtd->size; offset+=blocklen) { - err = trxsplit_checktrx(mtd, offset); - if (err == 0) - break; - } - - if (err) { - printk(KERN_ALERT PFX "no TRX header found\n"); - return; - } - - printk(KERN_INFO PFX "TRX header found at 0x%lX\n", offset); - - trx_mtd = mtd; - trx_offset = offset; -} - -static void __init trxsplit_remove_mtd(struct mtd_info *mtd) -{ - /* nothing to do */ -} - -static struct mtd_notifier trxsplit_notifier __initdata = { - .add = trxsplit_add_mtd, - .remove = trxsplit_remove_mtd, -}; - -static void __init trxsplit_find_trx(void) -{ - register_mtd_user(&trxsplit_notifier); - unregister_mtd_user(&trxsplit_notifier); -} - -static int __init trxsplit_init(void) -{ - int ret; - - trxsplit_find_trx(); - - ret = trxsplit_create_partitions(); - return ret; -} - -late_initcall(trxsplit_init); |