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 2005-08-28 17:01:50.948899632 +0200
-@@ -0,0 +1,131 @@
++++ linux-2.6.12.5-brcm/drivers/mtd/maps/bcm47xx-flash.c 2005-09-03 18:50:05.090478752 +0200
+@@ -0,0 +1,247 @@
+/*
-+ * Flash mapping for BCM947XX boards
++ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
++ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
+ *
-+ * Copyright (C) 2001 Broadcom Corporation
++ * original functions for finding root filesystem from Mike Baker
+ *
-+ * $Id: bcm47xx-flash.c,v 1.1 2004/10/21 07:18:31 jolt Exp $
++ * 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/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 WINDOW_ADDR 0x1c000000
+#define WINDOW_SIZE (0x400000*2)
+ phys: WINDOW_ADDR,
+};
+
-+#define SECTORS *64*1024
-+
+#ifdef CONFIG_MTD_PARTITIONS
-+#if 0
-+static struct mtd_partition bcm947xx_parts[] = {
-+// 64 - 4 - 14 - 1 = 45 = 8 + 37
-+ { name: "pmon", offset: 0, size: 4 SECTORS, mask_flags: MTD_WRITEABLE },
-+ { name: "linux", offset: MTDPART_OFS_APPEND, size: 14 SECTORS },
-+ { name: "rescue", offset: MTDPART_OFS_APPEND, size: 8 SECTORS },
-+ { name: "rootfs", offset: MTDPART_OFS_APPEND, size: 37 SECTORS },
-+ { name: "nvram", offset: MTDPART_OFS_APPEND, size: 1 SECTORS, mask_flags: MTD_WRITEABLE },
-+};
-+#else
++
+static struct mtd_partition bcm947xx_parts[] = {
-+ { name: "cfe",
-+ offset: 0,
-+ size: 384*1024,
-+ mask_flags: MTD_WRITEABLE
-+ },
-+ { name: "config",
-+ offset: MTDPART_OFS_APPEND,
-+ size: 128*1024
-+ },
-+ { name: "linux",
-+ offset: MTDPART_OFS_APPEND,
-+ size: 10*128*1024
-+ },
-+ { name: "jffs",
-+ offset: MTDPART_OFS_APPEND,
-+ size: (8*1024*1024)-((384*1024)+(128*1024)+(10*128*1024)+(128*1024)),
-+ },
-+ { name: "nvram",
-+ offset: MTDPART_OFS_APPEND,
-+ size: 128*1024,
-+ mask_flags: MTD_WRITEABLE
-+ },
++ { 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, },
+};
-+#endif
++
++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;
++
++ printk(KERN_NOTICE
++ "MTD erasesize: %d, Size: %d\n",
++ mtd->erasesize, size);
++
++ for (off = (384*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) {
++ printk(KERN_NOTICE "Found TRX Header!\n");
++
++ 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=384*1024;
++
++ /* nvram */
++ bcm947xx_parts[3].offset = size - (128*1024);
++ bcm947xx_parts[3].size = size - bcm947xx_parts[3].offset;
++
++ /* Size linux (kernel and rootfs) */
++ bcm947xx_parts[1].offset = bcm947xx_parts[0].size;
++ bcm947xx_parts[1].size = bcm947xx_parts[3].offset - bcm947xx_parts[1].offset;
++
++ /* Find and size rootfs */
++ if (find_root(mtd,size,&bcm947xx_parts[2])==0) {
++ /* entirely jffs2 */
++ bcm947xx_parts[2].size = bcm947xx_parts[3].offset - bcm947xx_parts[2].offset;
++ 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;
++ bcm947xx_parts[4].offset = ROUNDUP(bcm947xx_parts[4].offset, mtd->erasesize);
++ bcm947xx_parts[4].size = bcm947xx_parts[3].offset - bcm947xx_parts[4].offset;
++ }
++
++ return bcm947xx_parts;
++}
++
++EXPORT_SYMBOL(init_mtd_partitions);
+#endif
+
+int __init init_bcm947xx_map(void)
+{
-+ bcm947xx_map.virt = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
++ 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");
+
+ bcm947xx_mtd->owner = THIS_MODULE;
+
-+ printk(KERN_NOTICE "flash device: %x at %x\n", bcm947xx_mtd->size, WINDOW_ADDR);
++ size = bcm947xx_mtd->size;
++
++ printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", bcm947xx_mtd->size, WINDOW_ADDR);
+
+#ifdef CONFIG_MTD_PARTITIONS
-+ return add_mtd_partitions(bcm947xx_mtd, bcm947xx_parts, sizeof(bcm947xx_parts)/sizeof(bcm947xx_parts[0]));
-+#else
-+ return 0;
++ 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)
projects / lede.git / commitdiff