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-rw-r--r--target/linux/brcm-2.4/patches/004-flash.patch916
1 files changed, 916 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/patches/004-flash.patch b/target/linux/brcm-2.4/patches/004-flash.patch
new file mode 100644
index 0000000000..de2d5b170f
--- /dev/null
+++ b/target/linux/brcm-2.4/patches/004-flash.patch
@@ -0,0 +1,916 @@
+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
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 19:58:02 +0000