-diff -urN linux.old/drivers/mtd/devices/sflash.c linux.dev/drivers/mtd/devices/sflash.c
---- linux.old/drivers/mtd/devices/sflash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/mtd/devices/sflash.c 2006-06-21 21:41:24.000000000 +0200
-@@ -0,0 +1,298 @@
-+/*
-+ * Broadcom SiliconBackplane chipcommon serial flash interface
-+ *
-+ * Copyright 2001-2003, 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.
-+ *
-+ * $Id: sflash.c,v 1.1.1.3 2003/11/10 17:43:38 hyin Exp $
-+ */
-+
-+#include <linux/config.h>
-+#include <linux/module.h>
-+#include <linux/slab.h>
-+#include <linux/ioport.h>
-+#include <linux/mtd/compatmac.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/errno.h>
-+#include <linux/pci.h>
-+#include <linux/delay.h>
-+#include <asm/io.h>
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/minix_fs.h>
-+#include <linux/ext2_fs.h>
-+#include <linux/romfs_fs.h>
-+#include <linux/cramfs_fs.h>
-+#include <linux/jffs2.h>
-+#endif
-+
-+#include <typedefs.h>
-+#include <bcmdevs.h>
-+#include <bcmutils.h>
-+#include <osl.h>
-+#include <bcmutils.h>
-+#include <bcmnvram.h>
-+#include <sbconfig.h>
-+#include <sbchipc.h>
-+#include <sflash.h>
-+#include <trxhdr.h>
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+extern struct mtd_partition * init_mtd_partitions(struct mtd_info *mtd, size_t size);
-+#endif
-+
-+struct sflash_mtd {
-+ chipcregs_t *cc;
-+ struct semaphore lock;
-+ struct mtd_info mtd;
-+ struct mtd_erase_region_info regions[1];
-+};
-+
-+/* Private global state */
-+static struct sflash_mtd sflash;
-+
-+static int
-+sflash_mtd_poll(struct sflash_mtd *sflash, unsigned int offset, int timeout)
-+{
-+ int now = jiffies;
-+ int ret = 0;
-+
-+ for (;;) {
-+ if (!sflash_poll(sflash->cc, offset)) {
-+ ret = 0;
-+ break;
-+ }
-+ if (time_after(jiffies, now + timeout)) {
-+ printk(KERN_ERR "sflash: timeout\n");
-+ ret = -ETIMEDOUT;
-+ break;
-+ }
-+ if (current->need_resched) {
-+ set_current_state(TASK_UNINTERRUPTIBLE);
-+ schedule_timeout(timeout / 10);
-+ } else
-+ udelay(1);
-+ }
-+
-+ return ret;
-+}
-+
-+static int
-+sflash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
-+{
-+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
-+ int bytes, ret = 0;
-+
-+ /* Check address range */
-+ if (!len)
-+ return 0;
-+ if ((from + len) > mtd->size)
-+ return -EINVAL;
-+
-+ down(&sflash->lock);
-+
-+ *retlen = 0;
-+ while (len) {
-+ if ((bytes = sflash_read(sflash->cc, (uint) from, len, buf)) < 0) {
-+ ret = bytes;
-+ break;
-+ }
-+ from += (loff_t) bytes;
-+ len -= bytes;
-+ buf += bytes;
-+ *retlen += bytes;
-+ }
-+
-+ up(&sflash->lock);
-+
-+ return ret;
-+}
-+
-+static int
-+sflash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
-+{
-+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
-+ int bytes, ret = 0;
-+
-+ /* Check address range */
-+ if (!len)
-+ return 0;
-+ if ((to + len) > mtd->size)
-+ return -EINVAL;
-+
-+ down(&sflash->lock);
-+
-+ *retlen = 0;
-+ while (len) {
-+ if ((bytes = sflash_write(sflash->cc, (uint) to, len, buf)) < 0) {
-+ ret = bytes;
-+ break;
-+ }
-+ if ((ret = sflash_mtd_poll(sflash, (unsigned int) to, HZ / 10)))
-+ break;
-+ to += (loff_t) bytes;
-+ len -= bytes;
-+ buf += bytes;
-+ *retlen += bytes;
-+ }
-+
-+ up(&sflash->lock);
-+
-+ return ret;
-+}
-+
-+static int
-+sflash_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
-+{
-+ struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
-+ int i, j, ret = 0;
-+ unsigned int addr, len;
-+
-+ /* Check address range */
-+ if (!erase->len)
-+ return 0;
-+ if ((erase->addr + erase->len) > mtd->size)
-+ return -EINVAL;
-+
-+ addr = erase->addr;
-+ len = erase->len;
-+
-+ down(&sflash->lock);
-+
-+ /* Ensure that requested region is aligned */
-+ for (i = 0; i < mtd->numeraseregions; i++) {
-+ for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
-+ if (addr == mtd->eraseregions[i].offset + mtd->eraseregions[i].erasesize * j &&
-+ len >= mtd->eraseregions[i].erasesize) {
-+ if ((ret = sflash_erase(sflash->cc, addr)) < 0)
-+ break;
-+ if ((ret = sflash_mtd_poll(sflash, addr, 10 * HZ)))
-+ break;
-+ addr += mtd->eraseregions[i].erasesize;
-+ len -= mtd->eraseregions[i].erasesize;
-+ }
-+ }
-+ if (ret)
-+ break;
-+ }
-+
-+ up(&sflash->lock);
-+
-+ /* Set erase status */
-+ if (ret)
-+ erase->state = MTD_ERASE_FAILED;
-+ else
-+ erase->state = MTD_ERASE_DONE;
-+
-+ /* Call erase callback */
-+ if (erase->callback)
-+ erase->callback(erase);
-+
-+ return ret;
-+}
-+
-+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
-+#define sflash_mtd_init init_module
-+#define sflash_mtd_exit cleanup_module
-+#endif
-+
-+mod_init_t
-+sflash_mtd_init(void)
-+{
-+ struct pci_dev *pdev;
-+ int ret = 0;
-+ struct sflash *info;
-+ uint bank, i;
-+#ifdef CONFIG_MTD_PARTITIONS
-+ struct mtd_partition *parts;
-+#endif
-+
-+ if (!(pdev = pci_find_device(VENDOR_BROADCOM, SB_CC, NULL))) {
-+ printk(KERN_ERR "sflash: chipcommon not found\n");
-+ return -ENODEV;
-+ }
-+
-+ memset(&sflash, 0, sizeof(struct sflash_mtd));
-+ init_MUTEX(&sflash.lock);
-+
-+ /* Map registers and flash base */
-+ if (!(sflash.cc = ioremap_nocache(pci_resource_start(pdev, 0),
-+ pci_resource_len(pdev, 0)))) {
-+ printk(KERN_ERR "sflash: error mapping registers\n");
-+ ret = -EIO;
-+ goto fail;
-+ }
-+
-+ /* Initialize serial flash access */
-+ info = sflash_init(sflash.cc);
-+
-+ if (!info) {
-+ printk(KERN_ERR "sflash: found no supported devices\n");
-+ ret = -ENODEV;
-+ goto fail;
-+ }
-+
-+ /* Setup banks */
-+ sflash.regions[0].offset = 0;
-+ sflash.regions[0].erasesize = info->blocksize;
-+ sflash.regions[0].numblocks = info->numblocks;
-+ if (sflash.regions[0].erasesize > sflash.mtd.erasesize)
-+ sflash.mtd.erasesize = sflash.regions[0].erasesize;
-+ if (sflash.regions[0].erasesize * sflash.regions[0].numblocks) {
-+ sflash.mtd.size += sflash.regions[0].erasesize * sflash.regions[0].numblocks;
-+ }
-+ sflash.mtd.numeraseregions = 1;
-+ ASSERT(sflash.mtd.size == info->size);
-+
-+ /* Register with MTD */
-+ sflash.mtd.name = "sflash";
-+ sflash.mtd.type = MTD_NORFLASH;
-+ sflash.mtd.flags = MTD_CAP_NORFLASH;
-+ sflash.mtd.eraseregions = sflash.regions;
-+ sflash.mtd.module = THIS_MODULE;
-+ sflash.mtd.erase = sflash_mtd_erase;
-+ sflash.mtd.read = sflash_mtd_read;
-+ sflash.mtd.write = sflash_mtd_write;
-+ sflash.mtd.priv = &sflash;
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+ parts = init_mtd_partitions(&sflash.mtd, sflash.mtd.size);
-+ for (i = 0; parts[i].name; i++);
-+ ret = add_mtd_partitions(&sflash.mtd, parts, i);
-+#else
-+ ret = add_mtd_device(&sflash.mtd);
-+#endif
-+ if (ret) {
-+ printk(KERN_ERR "sflash: add_mtd failed\n");
-+ goto fail;
-+ }
-+
-+ return 0;
-+
-+ fail:
-+ if (sflash.cc)
-+ iounmap((void *) sflash.cc);
-+ return ret;
-+}
-+
-+mod_exit_t
-+sflash_mtd_exit(void)
-+{
-+#ifdef CONFIG_MTD_PARTITIONS
-+ del_mtd_partitions(&sflash.mtd);
-+#else
-+ del_mtd_device(&sflash.mtd);
-+#endif
-+ iounmap((void *) sflash.cc);
-+}
-+
-+module_init(sflash_mtd_init);
-+module_exit(sflash_mtd_exit);
-diff -urN linux.old/drivers/mtd/maps/bcm947xx-flash.c linux.dev/drivers/mtd/maps/bcm947xx-flash.c
---- linux.old/drivers/mtd/maps/bcm947xx-flash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/mtd/maps/bcm947xx-flash.c 2006-06-23 18:08:46.000000000 +0200
-@@ -0,0 +1,547 @@
-+/*
-+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
-+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
-+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
-+ *
-+ * original functions for finding root filesystem from Mike Baker
-+ *
-+ * 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 BCM947XX boards
-+ *
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/wait.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/map.h>
-+#ifdef CONFIG_MTD_PARTITIONS
-+#include <linux/mtd/partitions.h>
-+#endif
-+#include <linux/config.h>
-+#include <linux/squashfs_fs.h>
-+#include <linux/jffs2.h>
-+#include <linux/crc32.h>
-+#include <asm/io.h>
-+
-+#include <typedefs.h>
-+#include <osl.h>
-+#include <bcmnvram.h>
-+#include <bcmutils.h>
-+#include <sbconfig.h>
-+#include <sbchipc.h>
-+#include <sbutils.h>
-+#include <trxhdr.h>
-+
-+/* Global SB handle */
-+extern void *bcm947xx_sbh;
-+extern spinlock_t bcm947xx_sbh_lock;
-+
-+/* Convenience */
-+#define sbh bcm947xx_sbh
-+#define sbh_lock bcm947xx_sbh_lock
-+
-+#define WINDOW_ADDR 0x1fc00000
-+#define WINDOW_SIZE 0x400000
-+#define BUSWIDTH 2
-+
-+static struct mtd_info *bcm947xx_mtd;
-+
-+__u8 bcm947xx_map_read8(struct map_info *map, unsigned long ofs)
-+{
-+ if (map->map_priv_2 == 1)
-+ return __raw_readb(map->map_priv_1 + ofs);
-+
-+ u16 val = __raw_readw(map->map_priv_1 + (ofs & ~1));
-+ if (ofs & 1)
-+ return ((val >> 8) & 0xff);
-+ else
-+ return (val & 0xff);
-+}
-+
-+__u16 bcm947xx_map_read16(struct map_info *map, unsigned long ofs)
-+{
-+ return __raw_readw(map->map_priv_1 + ofs);
-+}
-+
-+__u32 bcm947xx_map_read32(struct map_info *map, unsigned long ofs)
-+{
-+ return __raw_readl(map->map_priv_1 + ofs);
-+}
-+
-+void bcm947xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-+{
-+ if (len==1) {
-+ memcpy_fromio(to, map->map_priv_1 + from, len);
-+ } else {
-+ int i;
-+ u16 *dest = (u16 *) to;
-+ u16 *src = (u16 *) (map->map_priv_1 + from);
-+ for (i = 0; i < (len / 2); i++) {
-+ dest[i] = src[i];
-+ }
-+ if (len & 1)
-+ *((u8 *)dest+len-1) = src[i] & 0xff;
-+ }
-+}
-+
-+void bcm947xx_map_write8(struct map_info *map, __u8 d, unsigned long adr)
-+{
-+ __raw_writeb(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void bcm947xx_map_write16(struct map_info *map, __u16 d, unsigned long adr)
-+{
-+ __raw_writew(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void bcm947xx_map_write32(struct map_info *map, __u32 d, unsigned long adr)
-+{
-+ __raw_writel(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void bcm947xx_map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
-+{
-+ memcpy_toio(map->map_priv_1 + to, from, len);
-+}
-+
-+struct map_info bcm947xx_map = {
-+ name: "Physically mapped flash",
-+ size: WINDOW_SIZE,
-+ buswidth: BUSWIDTH,
-+ read8: bcm947xx_map_read8,
-+ read16: bcm947xx_map_read16,
-+ read32: bcm947xx_map_read32,
-+ copy_from: bcm947xx_map_copy_from,
-+ write8: bcm947xx_map_write8,
-+ write16: bcm947xx_map_write16,
-+ write32: bcm947xx_map_write32,
-+ copy_to: bcm947xx_map_copy_to
-+};
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+
-+static struct mtd_partition bcm947xx_parts[] = {
-+ { name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, },
-+ { name: "linux", offset: 0, size: 0, },
-+ { name: "rootfs", offset: 0, size: 0, },
-+ { name: "nvram", offset: 0, size: 0, },
-+ { name: "OpenWrt", offset: 0, size: 0, },
-+ { name: NULL, },
-+};
-+
-+static int __init
-+find_cfe_size(struct mtd_info *mtd, size_t size)
-+{
-+ struct trx_header *trx;
-+ unsigned char buf[512];
-+ int off;
-+ size_t len;
-+ int blocksize;
-+
-+ trx = (struct trx_header *) buf;
-+
-+ blocksize = mtd->erasesize;
-+ if (blocksize < 0x10000)
-+ blocksize = 0x10000;
-+
-+ for (off = (128*1024); off < size; off += blocksize) {
-+ memset(buf, 0xe5, sizeof(buf));
-+
-+ /*
-+ * Read into buffer
-+ */
-+ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) ||
-+ len != sizeof(buf))
-+ continue;
-+
-+ /* found a TRX header */
-+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
-+ goto found;
-+ }
-+ }
-+
-+ printk(KERN_NOTICE
-+ "%s: Couldn't find bootloader size\n",
-+ mtd->name);
-+ return -1;
-+
-+ found:
-+ printk(KERN_NOTICE "bootloader size: %d\n", off);
-+ return off;
-+
-+}
-+
-+/*
-+ * 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, writhe data to flash.
-+ */
-+
-+ ret = MTD_WRITE (mtd, pos, len, &retlen, buf);
-+ if (ret)
-+ return ret;
-+ if (retlen != len)
-+ return -EIO;
-+ return 0;
-+}
-+
-+
-+
-+
-+static int __init
-+find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
-+{
-+ struct trx_header trx, *trx2;
-+ unsigned char buf[512], *block;
-+ int off, blocksize;
-+ u32 i, crc = ~0;
-+ size_t len;
-+ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
-+
-+ blocksize = mtd->erasesize;
-+ if (blocksize < 0x10000)
-+ blocksize = 0x10000;
-+
-+ for (off = (128*1024); off < size; off += blocksize) {
-+ memset(&trx, 0xe5, sizeof(trx));
-+
-+ /*
-+ * Read into buffer
-+ */
-+ if (MTD_READ(mtd, off, sizeof(trx), &len, (char *) &trx) ||
-+ len != sizeof(trx))
-+ continue;
-+
-+ /* found a TRX header */
-+ if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
-+ part->offset = le32_to_cpu(trx.offsets[2]) ? :
-+ le32_to_cpu(trx.offsets[1]);
-+ part->size = le32_to_cpu(trx.len);
-+
-+ part->size -= part->offset;
-+ part->offset += off;
-+
-+ goto found;
-+ }
-+ }
-+
-+ printk(KERN_NOTICE
-+ "%s: Couldn't find root filesystem\n",
-+ mtd->name);
-+ return -1;
-+
-+ found:
-+ if (part->size == 0)
-+ return 0;
-+
-+ if (MTD_READ(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
-+ return 0;
-+
-+ if (*((__u32 *) buf) == SQUASHFS_MAGIC) {
-+ printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used);
-+
-+ /* Update the squashfs partition size based on the superblock info */
-+ part->size = sb->bytes_used;
-+ len = part->offset + part->size;
-+ len += (mtd->erasesize - 1);
-+ len &= ~(mtd->erasesize - 1);
-+ part->size = len - part->offset;
-+ } else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) {
-+ printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name);
-+
-+ /* Move the squashfs outside of the trx */
-+ part->size = 0;
-+ } else {
-+ printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name);
-+ return 0;
-+ }
-+
-+ if (trx.len != part->offset + part->size - off) {
-+ /* Update the trx offsets and length */
-+ trx.len = part->offset + part->size - off;
-+
-+ /* Update the trx crc32 */
-+ for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
-+ if (MTD_READ(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
-+ return 0;
-+ crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i));
-+ }
-+ trx.crc32 = crc;
-+
-+ /* read first eraseblock from the trx */
-+ trx2 = block = kmalloc(mtd->erasesize, GFP_KERNEL);
-+ if (MTD_READ(mtd, off, mtd->erasesize, &len, block) || len != mtd->erasesize) {
-+ printk("Error accessing the first trx eraseblock\n");
-+ return 0;
-+ }
-+
-+ printk("Updating TRX offsets and length:\n");
-+ printk("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32);
-+ printk("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32);
-+
-+ /* Write updated trx header to the flash */
-+ memcpy(block, &trx, sizeof(trx));
-+ if (mtd->unlock)
-+ mtd->unlock(mtd, off, mtd->erasesize);
-+ erase_write(mtd, off, mtd->erasesize, block);
-+ if (mtd->sync)
-+ mtd->sync(mtd);
-+ kfree(block);
-+ printk("Done\n");
-+ }
-+
-+ return part->size;
-+}
-+
-+struct mtd_partition * __init
-+init_mtd_partitions(struct mtd_info *mtd, size_t size)
-+{
-+ int cfe_size;
-+
-+ cfe_size = find_cfe_size(mtd,size);
-+
-+ /* boot loader */
-+ bcm947xx_parts[0].offset = 0;
-+ bcm947xx_parts[0].size = cfe_size;
-+
-+ /* nvram */
-+ if (cfe_size != 384 * 1024) {
-+ bcm947xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
-+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
-+ } else {
-+ /* nvram (old 128kb config partition on netgear wgt634u) */
-+ bcm947xx_parts[3].offset = bcm947xx_parts[0].size;
-+ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
-+ }
-+
-+ /* linux (kernel and rootfs) */
-+ if (cfe_size != 384 * 1024) {
-+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size;
-+ bcm947xx_parts[1].size = bcm947xx_parts[3].offset -
-+ bcm947xx_parts[1].offset;
-+ } else {
-+ /* do not count the elf loader, which is on one block */
-+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size +
-+ bcm947xx_parts[3].size + mtd->erasesize;
-+ bcm947xx_parts[1].size = size -
-+ bcm947xx_parts[0].size -
-+ (2*bcm947xx_parts[3].size) -
-+ mtd->erasesize;
-+ }
-+
-+ /* find and size rootfs */
-+ if (find_root(mtd,size,&bcm947xx_parts[2])==0) {
-+ /* entirely jffs2 */
-+ bcm947xx_parts[4].name = NULL;
-+ bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset -
-+ bcm947xx_parts[3].size;
-+ } else {
-+ /* legacy setup */
-+ /* calculate leftover flash, and assign it to the jffs2 partition */
-+ if (cfe_size != 384 * 1024) {
-+ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset +
-+ bcm947xx_parts[2].size;
-+ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) {
-+ bcm947xx_parts[4].offset += mtd->erasesize -
-+ (bcm947xx_parts[4].offset % mtd->erasesize);
-+ }
-+ bcm947xx_parts[4].size = bcm947xx_parts[3].offset -
-+ bcm947xx_parts[4].offset;
-+ } else {
-+ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset +
-+ bcm947xx_parts[2].size;
-+ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) {
-+ bcm947xx_parts[4].offset += mtd->erasesize -
-+ (bcm947xx_parts[4].offset % mtd->erasesize);
-+ }
-+ bcm947xx_parts[4].size = size - bcm947xx_parts[3].size -
-+ bcm947xx_parts[4].offset;
-+ }
-+ }
-+
-+ return bcm947xx_parts;
-+}
-+
-+#endif
-+
-+
-+mod_init_t init_bcm947xx_map(void)
-+{
-+ ulong flags;
-+ uint coreidx;
-+ chipcregs_t *cc;
-+ uint32 fltype;
-+ uint window_addr = 0, window_size = 0;
-+ size_t size;
-+ int ret = 0;
-+#ifdef CONFIG_MTD_PARTITIONS
-+ struct mtd_partition *parts;
-+ int i;
-+#endif
-+
-+ spin_lock_irqsave(&sbh_lock, flags);
-+ coreidx = sb_coreidx(sbh);
-+
-+ /* Check strapping option if chipcommon exists */
-+ if ((cc = sb_setcore(sbh, SB_CC, 0))) {
-+ fltype = readl(&cc->capabilities) & CAP_FLASH_MASK;
-+ if (fltype == PFLASH) {
-+ bcm947xx_map.map_priv_2 = 1;
-+ window_addr = 0x1c000000;
-+ bcm947xx_map.size = window_size = 32 * 1024 * 1024;
-+ if ((readl(&cc->flash_config) & CC_CFG_DS) == 0)
-+ bcm947xx_map.buswidth = 1;
-+ }
-+ } else {
-+ fltype = PFLASH;
-+ bcm947xx_map.map_priv_2 = 0;
-+ window_addr = WINDOW_ADDR;
-+ window_size = WINDOW_SIZE;
-+ }
-+
-+ sb_setcoreidx(sbh, coreidx);
-+ spin_unlock_irqrestore(&sbh_lock, flags);
-+
-+ if (fltype != PFLASH) {
-+ printk(KERN_ERR "pflash: found no supported devices\n");
-+ ret = -ENODEV;
-+ goto fail;
-+ }
-+
-+ bcm947xx_map.map_priv_1 = (unsigned long) ioremap(window_addr, window_size);
-+
-+ if (!bcm947xx_map.map_priv_1) {
-+ printk(KERN_ERR "Failed to ioremap\n");
-+ return -EIO;
-+ }
-+
-+ if (!(bcm947xx_mtd = do_map_probe("cfi_probe", &bcm947xx_map))) {
-+ printk(KERN_ERR "pflash: cfi_probe failed\n");
-+ iounmap((void *)bcm947xx_map.map_priv_1);
-+ return -ENXIO;
-+ }
-+
-+ bcm947xx_mtd->module = THIS_MODULE;
-+
-+ size = bcm947xx_mtd->size;
-+
-+ printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, window_addr);
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+ parts = init_mtd_partitions(bcm947xx_mtd, size);
-+ for (i = 0; parts[i].name; i++);
-+ ret = add_mtd_partitions(bcm947xx_mtd, parts, i);
-+ if (ret) {
-+ printk(KERN_ERR "Flash: add_mtd_partitions failed\n");
-+ goto fail;
-+ }
-+#endif
-+
-+ return 0;
-+
-+ fail:
-+ if (bcm947xx_mtd)
-+ map_destroy(bcm947xx_mtd);
-+ if (bcm947xx_map.map_priv_1)
-+ iounmap((void *) bcm947xx_map.map_priv_1);
-+ bcm947xx_map.map_priv_1 = 0;
-+ return ret;
-+}
-+
-+mod_exit_t cleanup_bcm947xx_map(void)
-+{
-+#ifdef CONFIG_MTD_PARTITIONS
-+ del_mtd_partitions(bcm947xx_mtd);
-+#endif
-+ map_destroy(bcm947xx_mtd);
-+ iounmap((void *) bcm947xx_map.map_priv_1);
-+ bcm947xx_map.map_priv_1 = 0;
-+}
-+
-+module_init(init_bcm947xx_map);
-+module_exit(cleanup_bcm947xx_map);
projects / openwrt.git / blobdiff