diff options
| -rw-r--r-- | target/linux/adm8668/files/drivers/mtd/maps/adm8668.c | 354 | ||||
| -rw-r--r-- | target/linux/adm8668/image/Makefile | 5 | ||||
| -rwxr-xr-x | target/linux/adm8668/image/my-mkimage | 42 |
3 files changed, 313 insertions, 88 deletions
diff --git a/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c b/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c index 903decc7b..8d0ab690f 100644 --- a/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c +++ b/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c @@ -1,125 +1,341 @@ /* - * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> + * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org> + * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.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. + * original functions for finding root filesystem from Mike Baker * - * 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. + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * Copyright 2004, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * Flash mapping for adm8668 boards * - * 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 St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> -#include <linux/init.h> +#include <linux/sched.h> +#include <linux/wait.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> +#include <linux/slab.h> +#ifdef CONFIG_MTD_PARTITIONS #include <linux/mtd/partitions.h> +#endif +#include <linux/crc32.h> #include <linux/magic.h> #include <asm/io.h> -#define FLASH_SIZE 0x800000 -#define FLASH_PHYS_ADDR 0x10000000 +#define WINDOW_ADDR 0x10000000 +#define WINDOW_SIZE 0x800000 +#define BANKWIDTH 2 + +/* first a little bit about the headers i need.. */ /* just interested in part of the full struct */ struct squashfs_super_block { - __le32 s_magic; - __le32 pad0[9]; /* it's not really padding */ - __le64 bytes_used; + __le32 s_magic; + __le32 pad0[9]; /* it's not really padding */ + __le64 bytes_used; }; -static struct mtd_info *mymtd; +#define IH_MAGIC 0x56190527 /* Image Magic Number */ +struct uboot_header { + uint32_t ih_magic; /* Image Header Magic Number */ + uint32_t ih_hcrc; /* Image Header CRC Checksum */ + uint32_t ih_time; /* Image Creation Timestamp */ + uint32_t ih_size; /* Image Data Size */ + uint32_t ih_load; /* Data Load Address */ + uint32_t ih_ep; /* Entry Point Address */ + uint32_t ih_dcrc; /* Image Data CRC Checksum */ + uint8_t ih_os; /* Operating System */ + uint8_t ih_arch; /* CPU architecture */ + uint8_t ih_type; /* Image Type */ + uint8_t ih_comp; /* Compression Type */ + char ih_name[32]; /* image name */ +}; -static struct map_info nor_map = { - name: "adm8668-nor", - size: FLASH_SIZE, - phys: FLASH_PHYS_ADDR, - bankwidth: 2, +/************************************************/ + +static struct mtd_info *adm8668_mtd; + +struct map_info adm8668_map = { + name: "adm8668-nor", + size: WINDOW_SIZE, + phys: WINDOW_ADDR, + bankwidth: BANKWIDTH, }; -static struct mtd_partition nor_parts[] = { - { name: "linux", offset: 0x40000, size: FLASH_SIZE - 0x40000, }, - { name: "rootfs", offset: 0x200000, size: 0x400000, }, +#ifdef CONFIG_MTD_PARTITIONS + +/* + * Copied from mtdblock.c + * + * Cache stuff... + * + * Since typical flash erasable sectors are much larger than what Linux's + * buffer cache can handle, we must implement read-modify-write on flash + * sectors for each block write requests. To avoid over-erasing flash sectors + * and to speed things up, we locally cache a whole flash sector while it is + * being written to until a different sector is required. + */ + +static void erase_callback(struct erase_info *done) +{ + wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; + wake_up(wait_q); +} + +static int erase_write (struct mtd_info *mtd, unsigned long pos, + int len, const char *buf) +{ + struct erase_info erase; + DECLARE_WAITQUEUE(wait, current); + wait_queue_head_t wait_q; + size_t retlen; + int ret; + + /* + * First, let's erase the flash block. + */ + + init_waitqueue_head(&wait_q); + erase.mtd = mtd; + erase.callback = erase_callback; + erase.addr = pos; + erase.len = len; + erase.priv = (u_long)&wait_q; + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&wait_q, &wait); + + ret = mtd->erase(mtd, &erase); + if (ret) { + set_current_state(TASK_RUNNING); + remove_wait_queue(&wait_q, &wait); + printk (KERN_WARNING "erase of region [0x%lx, 0x%x] " + "on \"%s\" failed\n", + pos, len, mtd->name); + return ret; + } + + schedule(); /* Wait for erase to finish. */ + remove_wait_queue(&wait_q, &wait); + + /* + * Next, write data to flash. + */ + + ret = mtd->write (mtd, pos, len, &retlen, buf); + if (ret) + return ret; + if (retlen != len) + return -EIO; + return 0; +} + +/* decent defaults in case... shrug */ +static struct mtd_partition adm8668_parts[] = { + { name: "linux", offset: 0x40000, size: WINDOW_SIZE-0x40000, }, + { name: "rootfs", offset: 0xe0000, size: 0x140000, }, + { name: "uboot_env", offset: 0x20000, size: 0x20000, }, { name: NULL, }, }; -int __init init_mtd_partitions(struct mtd_info *mtd, size_t size) +/* in case i wanna change stuff later, and to clarify the math section... */ +#define PART_LINUX 0 +#define PART_ROOTFS 1 +#define NR_PARTS 3 + +static int __init +init_mtd_partitions(struct mtd_info *mtd, size_t size) { - int blocksize, off; - size_t len; - struct squashfs_super_block hdr; + struct uboot_header uhdr; + int off, blocksize; + size_t len, linux_len; + struct squashfs_super_block shdr; blocksize = mtd->erasesize; if (blocksize < 0x10000) blocksize = 0x10000; - memset(&hdr, 0xe5, sizeof(hdr)); - /* find and size squashfs */ - for (off = (128*1024); off < size; off += blocksize) { - if (mtd->read(mtd, off, sizeof(hdr), &len, (char *)&hdr) || - len != sizeof(hdr)) + /* now find squashfs */ + memset(&shdr, 0xe5, sizeof(shdr)); + for (off = adm8668_parts[PART_LINUX].offset; off < size; off += blocksize) { + /* + * Read into buffer + */ + if (mtd->read(mtd, off, sizeof(shdr), &len, (char *)&shdr) || + len != sizeof(shdr)) continue; - if (hdr.s_magic == SQUASHFS_MAGIC) { - printk(KERN_INFO "%s: Filesystem type: squashfs, off=%#x size=%#x\n", - mtd->name, off, (unsigned int)hdr.bytes_used); - /* Update the squashfs start address only! */ - nor_parts[1].offset = off; - nor_parts[1].size = FLASH_SIZE - off; - return 2; + if (shdr.s_magic == SQUASHFS_MAGIC) { + uint32_t fs_size = (uint32_t)shdr.bytes_used; + + printk(KERN_INFO "%s: Filesystem type: squashfs, size=%dkB\n", + mtd->name, fs_size>>10); + + /* Update rootfs based on the superblock info, and + * stretch to end of MTD. rootfs_split will split it */ + adm8668_parts[PART_ROOTFS].offset = off; + adm8668_parts[PART_ROOTFS].size = mtd->size - + adm8668_parts[PART_ROOTFS].offset; + + /* kernel ends where rootfs starts + * but we'll keep it full-length for upgrades */ + linux_len = adm8668_parts[PART_LINUX+1].offset - + adm8668_parts[PART_LINUX].offset; +#if 1 + adm8668_parts[PART_LINUX].size = mtd->size - + adm8668_parts[PART_LINUX].offset; +#else + adm8668_parts[PART_LINUX].size = linux_len; +#endif + goto found; + } + } + + printk(KERN_NOTICE + "%s: Couldn't find root filesystem\n", + mtd->name); + return NR_PARTS; + + found: + if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) || + len != sizeof(uhdr)) + return NR_PARTS; + + /* that's odd. how'd ya boot it then */ + if (uhdr.ih_magic != IH_MAGIC) + return NR_PARTS; + + if (be32_to_cpu(uhdr.ih_size) != (linux_len - sizeof(uhdr))) { + unsigned char *block, *data = (unsigned char *)(WINDOW_ADDR | (adm8668_parts[PART_LINUX].offset + sizeof(struct uboot_header)) | 0xA0000000); + + printk(KERN_NOTICE "Updating U-boot image:\n"); + printk(KERN_NOTICE " old: [size: %8d crc32: 0x%08x]\n", + be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc)); + + /* Update the data length & crc32 */ + uhdr.ih_size = cpu_to_be32(linux_len - sizeof(uhdr)); + uhdr.ih_dcrc = crc32_le(~0, data, linux_len - sizeof(uhdr)) ^ (~0); + uhdr.ih_dcrc = cpu_to_be32(uhdr.ih_dcrc); + + printk(KERN_NOTICE " new: [size: %8d crc32: 0x%08x]\n", + be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc)); + + /* update header's crc... */ + uhdr.ih_hcrc = 0; + uhdr.ih_hcrc = crc32_le(~0, (unsigned char *)&uhdr, + sizeof(uhdr)) ^ (~0); + uhdr.ih_hcrc = cpu_to_be32(uhdr.ih_hcrc); + + /* read first eraseblock from the image */ + block = kmalloc(mtd->erasesize, GFP_KERNEL); + if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, &len, block) || len != mtd->erasesize) { + printk("Error copying first eraseblock\n"); + return 0; } + + /* Write updated header to the flash */ + memcpy(block, &uhdr, sizeof(uhdr)); + if (mtd->unlock) + mtd->unlock(mtd, off, mtd->erasesize); + erase_write(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, block); + if (mtd->sync) + mtd->sync(mtd); + kfree(block); + printk(KERN_NOTICE "Done\n"); } - return 2; + + return NR_PARTS; } -int __init init_nor(void) +#endif + + +int __init init_adm8668_map(void) { - int nr_parts; +#ifdef CONFIG_MTD_PARTITIONS + int nr_parts, ret; +#endif - printk(KERN_NOTICE "ADM8668 NOR flash device: %#x at %#x\n", - FLASH_SIZE, FLASH_PHYS_ADDR); + adm8668_map.virt = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE); - nor_map.virt = ioremap(FLASH_PHYS_ADDR, FLASH_SIZE); - if (!nor_map.virt) { - printk("Failed to ioremap\n"); + if (!adm8668_map.virt) { + printk(KERN_ERR "Failed to ioremap\n"); return -EIO; } - simple_map_init(&nor_map); - mymtd = do_map_probe("cfi_probe", &nor_map); - if (!mymtd) { - iounmap((void *)nor_map.virt); + simple_map_init(&adm8668_map); + if (!(adm8668_mtd = do_map_probe("cfi_probe", &adm8668_map))) { + printk(KERN_ERR "cfi_probe failed\n"); + iounmap((void *)adm8668_map.virt); return -ENXIO; } - mymtd->owner = THIS_MODULE; - nr_parts = init_mtd_partitions(mymtd, mymtd->size); - add_mtd_partitions(mymtd, nor_parts, nr_parts); + + adm8668_mtd->owner = THIS_MODULE; + +#ifdef CONFIG_MTD_PARTITIONS + nr_parts = init_mtd_partitions(adm8668_mtd, adm8668_mtd->size); + ret = add_mtd_partitions(adm8668_mtd, adm8668_parts, nr_parts); + if (ret) { + printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); + goto fail; + } +#endif return 0; + + fail: + if (adm8668_mtd) + map_destroy(adm8668_mtd); + if (adm8668_map.virt) + iounmap((void *) adm8668_map.virt); + adm8668_map.virt = 0; + return ret; } -static void __exit cleanup_nor(void) +void __exit cleanup_adm8668_map(void) { - if (mymtd) { - del_mtd_partitions(mymtd); - map_destroy(mymtd); - } - if (nor_map.virt) { - iounmap((void *)nor_map.virt); - nor_map.virt = 0; - } +#ifdef CONFIG_MTD_PARTITIONS + del_mtd_partitions(adm8668_mtd); +#endif + map_destroy(adm8668_mtd); + iounmap((void *) adm8668_map.virt); + adm8668_map.virt = 0; } -module_init(init_nor); -module_exit(cleanup_nor); +module_init(init_adm8668_map); +module_exit(cleanup_adm8668_map); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>"); diff --git a/target/linux/adm8668/image/Makefile b/target/linux/adm8668/image/Makefile index e9d183b78..57b8d7ba5 100644 --- a/target/linux/adm8668/image/Makefile +++ b/target/linux/adm8668/image/Makefile @@ -16,11 +16,14 @@ define Image/Prepare $(MAKE) -C lzma-loader \ KDIR="$(KDIR)" \ clean compile + rm -f $(KDIR)/fs_mark + touch $(KDIR)/fs_mark + $(call prepare_generic_squashfs,$(KDIR)/fs_mark) endef define Image/Build ./my-mkimage $(KDIR)/loader.bin $(KDIR)/root.squashfs \ - $(BIN_DIR)/$(IMG_PREFIX)-$(1).bin + $(KDIR)/fs_mark $(BIN_DIR)/$(IMG_PREFIX)-$(1).bin endef $(eval $(call BuildImage)) diff --git a/target/linux/adm8668/image/my-mkimage b/target/linux/adm8668/image/my-mkimage index 7012d7b97..7ed6666e7 100755 --- a/target/linux/adm8668/image/my-mkimage +++ b/target/linux/adm8668/image/my-mkimage @@ -1,26 +1,32 @@ #!/bin/sh # my-mkimage -# This will just pad the kernel partition to 64k boundary, then add rootfs. -# but we have to be fancy because u-boot mkimage is going to add 64 byte header. +# This will pad given files to 64k boundaries to make a single u-boot image. +# we have to be fancy because u-boot mkimage is going to add 64 byte header, ... +# and i only know basic arithmetic.. ;) # # Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> +[ $# -lt 2 ] && { + echo usage: $0 loader.bin [rootfs.squashfs [fs_mark [...]]] output.bin +} -PATH_LOADER=$1 -PATH_ROOTFS=$2 -OUTPUT=$3 - -# todo - check arguments...? nah... -if [ -x $OUTPUT ]; then - echo usage: $0 loader.bin root.squashfs output.bin - exit -fi - -OLDSIZE=$(stat -c%s $PATH_LOADER) +OLDSIZE=$(stat -c%s $1) NEWSIZE=$(((OLDSIZE / 65536 + 1) * 65536 - 64)) -dd if=$PATH_LOADER of=vmlinuz.tmp bs=$NEWSIZE conv=sync -cat $PATH_ROOTFS >>vmlinuz.tmp -../../../../staging_dir/host/bin/mkimage -A mips -O linux -T kernel -C none -a 0x400000 -e 0x400000 -n "ADM8668 Linux Kernel(2.4.31)" -d vmlinuz.tmp $OUTPUT -rm vmlinuz.tmp +dd if=$1 of=vmlinuz.tmp bs=$NEWSIZE conv=sync >/dev/null 2>&1 +shift +appends=$(($# - 1)) +echo +while [ $appends -gt 0 ]; do + dd if=$1 of=temp bs=64k conv=sync >/dev/null 2>&1 + printf "### '%s' starts at 0x%x\n" "`basename $1`" "$((NEWSIZE+64))" + cat temp >>vmlinuz.tmp + shift + appends=$((appends-1)) + NEWSIZE=$(stat -c%s vmlinuz.tmp) +done +echo +../../../../staging_dir/host/bin/mkimage -A mips -O linux -T kernel \ +-C none -a 0x80400000 -e 0x80400000 -n "ADM8668 Linux Kernel(2.4.31)" \ +-d vmlinuz.tmp $1 -printf '\n\nOk done, now your squashfs starts on an erase boundary of %x :)\n\n' $((NEWSIZE+64)) +rm temp vmlinuz.tmp |