-diff -Nur linux-2.6.12.5/drivers/mtd/maps/Kconfig linux-2.6.12.5-brcm/drivers/mtd/maps/Kconfig
---- linux-2.6.12.5/drivers/mtd/maps/Kconfig 2005-08-15 02:20:18.000000000 +0200
-+++ linux-2.6.12.5-brcm/drivers/mtd/maps/Kconfig 2005-09-16 10:29:18.355564432 +0200
-@@ -357,6 +357,12 @@
- Mapping for the Flaga digital module. If you don't have one, ignore
- this setting.
-
-+config MTD_BCM47XX
-+ tristate "BCM47xx flash device"
-+ depends on MIPS && MTD_CFI && BCM947XX
-+ help
-+ Support for the flash chips on the BCM947xx board.
-+
- config MTD_BEECH
- tristate "CFI Flash device mapped on IBM 405LP Beech"
- depends on MTD_CFI && PPC32 && 40x && BEECH
-diff -Nur linux-2.6.12.5/drivers/mtd/maps/Makefile linux-2.6.12.5-brcm/drivers/mtd/maps/Makefile
---- linux-2.6.12.5/drivers/mtd/maps/Makefile 2005-08-15 02:20:18.000000000 +0200
-+++ linux-2.6.12.5-brcm/drivers/mtd/maps/Makefile 2005-09-16 10:29:18.360563672 +0200
-@@ -31,6 +31,7 @@
- obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
- obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o
- obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o
-+obj-$(CONFIG_MTD_BCM47XX) += bcm47xx-flash.o
- obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o
- obj-$(CONFIG_MTD_IPAQ) += ipaq-flash.o
- obj-$(CONFIG_MTD_SBC_GXX) += sbc_gxx.o
-diff -Nur linux-2.6.12.5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.12.5-brcm/drivers/mtd/maps/bcm47xx-flash.c
---- linux-2.6.12.5/drivers/mtd/maps/bcm47xx-flash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.12.5-brcm/drivers/mtd/maps/bcm47xx-flash.c 2005-09-16 10:29:18.361563520 +0200
-@@ -0,0 +1,249 @@
-+/*
-+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
-+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.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 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: bcm47xx-flash.c,v 1.1 2004/10/21 07:18:31 jolt Exp $
-+ *
-+ * Flash mapping for BCM947XX boards
-+ */
-+
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <asm/io.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/map.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/config.h>
-+#include <typedefs.h>
-+#include <bcmutils.h>
-+#include <bcmnvram.h>
-+#include <trxhdr.h>
-+
-+#ifdef CONFIG_MTD_PARTITIONS
-+extern struct mtd_partition * init_mtd_partitions(struct mtd_info *mtd, size_t size);
-+#endif
-+
-+#define CFE_SIZE 1024*384
-+#define NVRAM_SIZE 1024*128
-+
-+#define WINDOW_ADDR 0x1c000000
-+#define WINDOW_SIZE (0x400000*2)
-+#define BUSWIDTH 2
-+
-+static struct mtd_info *bcm947xx_mtd;
-+
-+static void bcm947xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-+{
-+#define MIPS_MEMCPY_ALIGN 4
-+ map_word ret;
-+ ssize_t transfer;
-+ ssize_t done = 0;
-+ if ((len >= MIPS_MEMCPY_ALIGN) && (!(from & (MIPS_MEMCPY_ALIGN - 1))) && (!(((unsigned int)to & (MIPS_MEMCPY_ALIGN - 1))))) {
-+ done = len & ~(MIPS_MEMCPY_ALIGN - 1);
-+ memcpy_fromio(to, map->virt + from, done);
-+ }
-+ while (done < len) {
-+ ret = map->read(map, from + done);
-+ transfer = len - done;
-+ if (transfer > map->bankwidth)
-+ transfer = map->bankwidth;
-+ memcpy((void *)((unsigned long)to + done), &ret.x[0], transfer);
-+ done += transfer;
-+ }
-+}
-+
-+static struct map_info bcm947xx_map = {
-+ name: "Physically mapped flash",
-+ size: WINDOW_SIZE,
-+ bankwidth: BUSWIDTH,
-+ phys: WINDOW_ADDR,
-+};
-+
-+#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_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
-+{
-+ struct trx_header *trx;
-+ unsigned char buf[512];
-+ int off;
-+ size_t len;
-+
-+ trx = (struct trx_header *) buf;
-+
-+ for (off = (512*1024); off < size; off += mtd->erasesize) {
-+ 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) {
-+ 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 done;
-+ }
-+ }
-+
-+ printk(KERN_NOTICE
-+ "%s: Couldn't find root filesystem\n",
-+ mtd->name);
-+ return -1;
-+
-+ done:
-+ return part->size;
-+}
-+
-+struct mtd_partition * __init
-+init_mtd_partitions(struct mtd_info *mtd, size_t size)
-+{
-+
-+ /* boot loader */
-+ bcm947xx_parts[0].offset = 0;
-+ bcm947xx_parts[0].size = CFE_SIZE;
-+
-+ /* nvram (old config partition) */
-+ bcm947xx_parts[3].offset = bcm947xx_parts[0].size;
-+ bcm947xx_parts[3].size = NVRAM_SIZE;
-+
-+ /* Size linux (kernel and rootfs) */
-+ /* do not count the elf loader, which is on one sector */
-+ bcm947xx_parts[1].offset = bcm947xx_parts[0].size + bcm947xx_parts[3].size + mtd->erasesize;
-+ bcm947xx_parts[1].size = size - NVRAM_SIZE - bcm947xx_parts[0].size -
-+ bcm947xx_parts[3].size - mtd->erasesize;
-+
-+ /* Find and size rootfs */
-+ if (find_root(mtd,size,&bcm947xx_parts[2])==0) {
-+ /* entirely jffs2 */
-+ bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset - NVRAM_SIZE;
-+ bcm947xx_parts[4].name = NULL;
-+ } else {
-+ /* legacy setup */
-+ /* calculate leftover flash, and assign it to the jffs2 partition */
-+ 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 - NVRAM_SIZE - bcm947xx_parts[4].offset;
-+ }
-+
-+ return bcm947xx_parts;
-+}
-+
-+EXPORT_SYMBOL(init_mtd_partitions);
-+#endif
-+
-+int __init init_bcm947xx_map(void)
-+{
-+ size_t size;
-+ int ret = 0;
-+#ifdef CONFIG_MTD_PARTITIONS
-+ struct mtd_partition *parts;
-+ int i;
-+#endif
-+
-+ bcm947xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
-+
-+ if (!bcm947xx_map.virt) {
-+ printk("Failed to ioremap\n");
-+ return -EIO;
-+ }
-+ simple_map_init(&bcm947xx_map);
-+
-+ bcm947xx_map.copy_from = bcm947xx_map_copy_from;
-+
-+ if (!(bcm947xx_mtd = do_map_probe("cfi_probe", &bcm947xx_map))) {
-+ printk("Failed to do_map_probe\n");
-+ iounmap((void *)bcm947xx_map.virt);
-+ return -ENXIO;
-+ }
-+
-+ bcm947xx_mtd->owner = THIS_MODULE;
-+
-+ size = bcm947xx_mtd->size;
-+
-+ printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", bcm947xx_mtd->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;
-+}
-+
-+void __exit cleanup_bcm947xx_map(void)
-+{
-+#ifdef CONFIG_MTD_PARTITIONS
-+ del_mtd_partitions(bcm947xx_mtd);
-+#endif
-+ map_destroy(bcm947xx_mtd);
-+ iounmap((void *)bcm947xx_map.virt);
-+}
-+
-+module_init(init_bcm947xx_map);
-+module_exit(cleanup_bcm947xx_map);
projects / openwrt.git / blobdiff