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openwrt-owl/target/linux/brcm-2.4/patches/004-flash.patch

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diff -urN linux.old/drivers/mtd/devices/Config.in linux.dev/drivers/mtd/devices/Config.in
--- linux.old/drivers/mtd/devices/Config.in 2006-06-22 17:35:39.000000000 +0200
+++ linux.dev/drivers/mtd/devices/Config.in 2006-06-21 21:41:24.000000000 +0200
@@ -5,6 +5,7 @@
mainmenu_option next_comment
comment 'Self-contained MTD device drivers'
+bool ' Broadcom Chipcommon Serial Flash support' CONFIG_MTD_SFLASH
dep_tristate ' Ramix PMC551 PCI Mezzanine RAM card support' CONFIG_MTD_PMC551 $CONFIG_MTD $CONFIG_PCI
if [ "$CONFIG_MTD_PMC551" = "y" -o "$CONFIG_MTD_PMC551" = "m" ]; then
bool ' PMC551 256M DRAM Bugfix' CONFIG_MTD_PMC551_BUGFIX
diff -urN linux.old/drivers/mtd/devices/Makefile linux.dev/drivers/mtd/devices/Makefile
--- linux.old/drivers/mtd/devices/Makefile 2006-06-22 17:35:39.000000000 +0200
+++ linux.dev/drivers/mtd/devices/Makefile 2006-06-21 21:41:24.000000000 +0200
@@ -3,6 +3,8 @@
#
# $Id: Makefile,v 1.4 2001/06/26 21:10:05 spse Exp $
+EXTRA_CFLAGS := -I$(TOPDIR)/arch/mips/bcm947xx/include
+
O_TARGET := devlink.o
# *** BIG UGLY NOTE ***
@@ -12,6 +14,7 @@
# here where previously there was none. We now have to ensure that
# doc200[01].o are linked before docprobe.o
+obj-$(CONFIG_MTD_SFLASH) += sflash.o
obj-$(CONFIG_MTD_DOC1000) += doc1000.o
obj-$(CONFIG_MTD_DOC2000) += doc2000.o
obj-$(CONFIG_MTD_DOC2001) += doc2001.o
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 +1,548 @@
+/*
+ * 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;
+
+ if ((cfe_size = find_cfe_size(mtd,size)) < 0)
+ return NULL;
+
+ /* 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);
diff -urN linux.old/drivers/mtd/maps/Config.in linux.dev/drivers/mtd/maps/Config.in
--- linux.old/drivers/mtd/maps/Config.in 2006-06-22 17:35:39.000000000 +0200
+++ linux.dev/drivers/mtd/maps/Config.in 2006-06-21 21:41:24.000000000 +0200
@@ -48,6 +48,7 @@
fi
if [ "$CONFIG_MIPS" = "y" ]; then
+ dep_tristate ' CFI Flash device mapped on Broadcom BCM947XX boards' CONFIG_MTD_BCM947XX $CONFIG_MTD_CFI
dep_tristate ' Pb1000 MTD support' CONFIG_MTD_PB1000 $CONFIG_MIPS_PB1000
dep_tristate ' Pb1500 MTD support' CONFIG_MTD_PB1500 $CONFIG_MIPS_PB1500
dep_tristate ' Pb1100 MTD support' CONFIG_MTD_PB1100 $CONFIG_MIPS_PB1100
diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
--- linux.old/drivers/mtd/maps/Makefile 2006-06-22 17:35:39.000000000 +0200
+++ linux.dev/drivers/mtd/maps/Makefile 2006-06-21 21:41:24.000000000 +0200
@@ -3,6 +3,8 @@
#
# $Id: Makefile,v 1.37 2003/01/24 14:26:38 dwmw2 Exp $
+EXTRA_CFLAGS := -I$(TOPDIR)/arch/mips/bcm947xx/include
+
BELOW25 := $(shell echo $(PATCHLEVEL) | sed s/[1234]/y/)
ifeq ($(BELOW25),y)
@@ -10,6 +12,7 @@
endif
# Chip mappings
+obj-$(CONFIG_MTD_BCM947XX) += bcm947xx-flash.o
obj-$(CONFIG_MTD_CDB89712) += cdb89712.o
obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o
obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
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