move platform specific base-files into target/linux/<targetname>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5621 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/brcm-2.4/base-files.mk

@@ -0,0 +1,12 @@
+define Build/Compile
+	$(call Build/Compile/Default)
+	$(TARGET_CC) -I $(PLATFORM_DIR)/src -o $(PKG_BUILD_DIR)/jffs2root $(PLATFORM_DIR)/src/jffs2root.c
+endef
+
+define Package/base-files/install-target
+	rm -f $(1)/etc/config/network
+	mkdir -p $(1)/sbin
+	$(CP) $(PKG_BUILD_DIR)/jffs2root $(1)/sbin
+endef
+
+

target/linux/brcm-2.4/base-files/bin/firstboot

@@ -0,0 +1,128 @@
+#!/bin/sh
+# $Id$
+. /etc/functions.sh
+
+partname="OpenWrt"
+mtdpart="$(find_mtd_part $partname)"
+
+rom=$(awk '/squashfs/ {print $2}' /proc/mounts)
+jffs=$(awk '/jffs2/ {print $2}' /proc/mounts)
+
+dupe() { # <new_root> <old_root>
+	cd $1
+	echo -n "creating directories... "
+	{
+		cd $2 
+		find . -xdev -type d
+		echo "./dev ./jffs ./mnt ./proc ./tmp"
+		# xdev skips mounted directories
+		cd $1 
+	} | xargs mkdir -p
+	echo "done"
+
+	echo -n "setting up symlinks... "
+	for file in $(cd $2; find . -xdev -type f;); do
+		case "$file" in
+		./rom/note) ;; #nothing
+		./etc/config*|\
+		./usr/lib/ipkg/info/*) cp -af $2/$file $file;;
+		*) ln -sf /rom/${file#./*} $file;;
+		esac
+	done
+	for file in $(cd $2; find . -xdev -type l;); do
+		cp -af $2/${file#./*} $file
+	done
+	echo "done"
+}
+
+pivot() { # <new_root> <old_root>
+	mount -o move /proc $1/proc && \
+	pivot_root $1 $1$2 && {
+		mount -o move $2/dev /dev
+		mount -o move $2/tmp /tmp
+		mount -o move $2/jffs /jffs 2>&-
+		return 0
+	}
+}
+
+fopivot() { # <rw_root> <ro_root> <dupe?>
+	root=$1
+	{
+		mount -t mini_fo -o base=/,sto=$1 $1 /mnt 2>&- && root=/mnt
+	} || {
+		[ "$3" = "1" ] && {
+		mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1
+		dupe $1 $rom
+		}
+	}
+	pivot $root $2
+}
+
+ramoverlay() {
+	mkdir -p /tmp/root
+	fopivot /tmp/root /rom 1
+}
+
+# invoked as an executable
+[ "${0##*/}" = "firstboot" ] && {
+
+	[ -z "$mtdpart" ] && {
+		echo "MTD partition not found."
+		exit 1
+	}
+
+	[ -z "$rom" ] && {
+		echo "You do not have a squashfs partition; aborting"
+		echo "(firstboot cannot be run on jffs2 based firmwares)"
+		exit 1
+	}
+
+	[ "$1" = "switch2jffs" ] && {
+		mtd erase "$partname"
+
+		# try to avoid fs changing while copying
+		mount -o remount,ro none / 2>&-
+
+		# copy ramoverlay to jffs2
+		mount "$mtdpart" /rom/jffs -t jffs2
+		echo -n "copying files ... "
+		cp -a /tmp/root/* /rom/jffs 2>&-
+		echo "done"
+
+		# switch back to squashfs (temporarily)
+		# and park the ramdisk ontop of /tmp/root
+		pivot /rom /mnt
+		mount -o move /mnt /tmp/root
+
+		# /jffs is the overlay
+		# /rom is the readonly
+		fopivot /jffs /rom
+
+		# try to get rid of /tmp/root
+		# this will almost always fail
+		umount /tmp/root 2>&-
+
+		# fs is clean
+		jffs2root --clean
+		exit 0
+	}
+
+	# script run manually
+	[ \! -z "$jffs" ] && {
+		echo "firstboot has already been run"
+		echo "jffs2 partition is mounted, only resetting files"
+		grep mini_fo /proc/filesystems >&-
+		[ $? != 0 ] && {
+			dupe $jffs $rom
+			exit 0
+		} || { 
+			rm -rf $jffs/* 2>&-
+			mount -o remount $jffs / 2>&-
+			exit 0
+		}
+	}
+
+	mtd erase "$partname"
+	mount "$mtdpart" /jffs -t jffs2
+	fopivot /jffs /rom 1
+}

target/linux/brcm-2.4/base-files/etc/diag.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+set_led() {
+	local led="$1"
+	local state="$2"
+	[ -f "/proc/diag/led/$1" ] && echo "$state" > "/proc/diag/led/$1"
+}
+
+set_state() {
+	case "$1" in
+		preinit)
+			set_led dmz 1
+			set_led diag 1
+			set_led power 0
+		;;
+		failsafe)
+			set_led diag f
+			set_led power f
+			set_led dmz f
+		;;
+		done)
+			set_led dmz 0
+			set_led diag 0
+			set_led power 1
+		;;
+	esac
+}

target/linux/brcm-2.4/base-files/etc/init.d/done

@@ -0,0 +1,15 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2006 OpenWrt.org
+
+START=95
+boot() {
+	[ -d /tmp/root ] && {
+		lock /tmp/.switch2jffs
+		firstboot switch2jffs
+		lock -u /tmp/.switch2jffs
+	}
+
+	# set leds to normal state
+	. /etc/diag.sh
+	set_state done
+}

target/linux/brcm-2.4/base-files/etc/init.d/netconfig

@@ -0,0 +1,98 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2006 OpenWrt.org
+
+START=05
+
+start() {
+	[ -e /etc/config/network ] && exit 0
+
+	mkdir -p /etc/config
+
+	(
+		if grep -E 'mtd0: 000(6|a)0000' /proc/mtd 2>&- >&-; then
+			# WGT634u
+			echo boardtype=wgt634u
+		else
+			strings /dev/mtdblock/3
+		fi
+	) | awk '
+	function p(cfgname, name) {
+		if (c[name] != "") print "	option " cfgname "	\"" c[name] "\""
+	}
+	
+	BEGIN {
+		FS="="
+		c["lan_ifname"]="eth0.0"
+		c["wan_ifname"]="eth0.1"
+		c["vlan0ports"]="1 2 3 4 5*"
+		c["vlan1ports"]="0 5"
+	}
+	
+	($1 == "boardnum") || ($1 == "boardtype") || ($1 == "boardflags") {
+		nvram[$1] = $2
+	}
+	
+	END {
+		# v1 hardware
+		if (nvram["boardtype"] == "bcm94710dev") {
+			# Asus WL-500g
+			if (nvram["boardnum"] == "asusX") {
+				c["lan_ifname"]="eth0 eth1" # FIXME
+				c["wan_ifname"]=""
+			}
+		}
+		if (nvram["boardtype"] == "bcm94710r4") {
+			# Toshiba WRC-1000
+			c["lan_ifname"] = "eth0"
+			c["wan_ifname"] = "eth1"
+		}
+		if (nvram["boardtype"] == "wgt634u") {
+			c["vlan0ports"] = "0 1 2 3 5*"
+			c["vlan1ports"] = "4 5"
+		}
+		if ((nvram["boardtype"] == "0x0467") || (nvram["boardtype"] == "0x042f")) {
+			if (nvram["boardnum"] == "45") {
+				c["vlan0ports"] = "1 2 3 4 5*"
+				c["vlan1ports"] = "0 5"
+			} else {
+				c["vlan0ports"] = "0 1 2 3 5*"
+				c["vlan1ports"] = "4 5"
+			}
+		}
+	
+		# WAP54G
+		if ((nvram["boardnum"] == "2") || \
+			(nvram["boardnum"] == "1024")) {
+			c["lan_ifname"]="eth0"
+			c["wan_ifname"]=""
+		}
+	
+		print "#### VLAN configuration "
+		print "config switch eth0"
+		p("vlan0", "vlan0ports")
+		p("vlan1", "vlan1ports")
+		print ""
+		print ""
+		print "#### Loopback configuration"
+		print "config interface loopback"
+		print "	option ifname	\"lo\""
+		print "	option proto	static"
+		print "	option ipaddr	127.0.0.1"
+		print "	option netmask	255.0.0.0"
+		print ""
+		print ""
+		print "#### LAN configuration"
+		print "config interface lan"
+		print "	option type 	bridge"
+		p("ifname", "lan_ifname")
+		print "	option proto	static"
+		print "	option ipaddr	192.168.1.1"
+		print "	option netmask	255.255.255.0"
+		print ""
+		print ""
+		print "#### WAN configuration"
+		print "config interface	wan"
+		p("ifname", "wan_ifname")
+		print "	option proto	dhcp"
+	}' > /etc/config/network
+}

target/linux/brcm-2.4/base-files/etc/preinit

@@ -0,0 +1,74 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+. /etc/functions.sh
+. /etc/diag.sh
+
+failsafe() {
+	lock /tmp/.failsafe
+
+	echo "0 1 2 3 4 5u*" > /proc/switch/eth0/vlan/0/ports
+	
+	set_state failsafe
+	[ -x "/usr/sbin/nvram" ] && {
+		[ "$(nvram get boot_wait)" != "on" ] && {
+			nvram set boot_wait=on
+			nvram commit
+		}
+	}
+
+	netmsg 192.168.1.255 "Entering Failsafe!"
+	telnetd -l /bin/login <> /dev/null 2>&1
+
+	ash --login
+	lock -u /tmp/.failsafe
+}
+
+export PATH=/bin:/sbin:/usr/bin:/usr/sbin
+mount none /proc -t proc
+size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
+mount none /tmp -t tmpfs -o size=$size
+
+insmod diag
+set_state preinit
+trap 'FAILSAFE=true' USR1
+echo '/sbin/hotplug.failsafe' > /proc/sys/kernel/hotplug
+
+ifname=eth0
+
+# hardware specific overrides
+case "$(cat /proc/diag/model)" in
+	"Linksys WAP54G V1") ifname=eth1;;
+	"ASUS WL-HDD") ifname=eth1;;
+	"ASUS WL-300g") ifname=eth1;;
+	"ASUS (unknown, BCM4702)") ifname=eth1;;
+esac
+
+insmod switch-core
+insmod switch-robo || insmod switch-adm || rmmod switch-core
+
+ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
+
+[ -d /proc/switch/eth0 ] && {
+	echo 1 > /proc/switch/eth0/reset
+
+	# this would be easier if we blasted the message across all ports
+	# but we don't want packets leaking across interfaces
+	for port in $(seq 0 4); do {
+		echo "$port 5u*" > /proc/switch/eth0/vlan/0/ports
+		netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
+	}; done
+} || netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
+
+sleep 2
+
+eval ${FAILSAFE:+failsafe}
+
+lock -w /tmp/.failsafe
+set_state preinit
+echo /sbin/hotplug > /proc/sys/kernel/hotplug
+
+ifconfig $ifname 0.0.0.0 down
+
+mount_root
+exec /sbin/init

target/linux/brcm-2.4/base-files/sbin/hotplug.failsafe

@@ -0,0 +1,4 @@
+#!/bin/sh
+case "$1" in
+	button) kill -USR1 1;;
+esac

target/linux/brcm-2.4/base-files/sbin/mount_root

@@ -0,0 +1,31 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+is_dirty() {
+	grep Broadcom /proc/cpuinfo >&- || return 1
+	OFFSET="$(($(hexdump -v /dev/mtdblock/1 -s 20 -n 2 -e '"%d"')-1))"
+	return $(hexdump -v /dev/mtdblock/1 -s $OFFSET -n 1 -e '"%d"')
+}
+
+if [ "$1" != "failsafe" ]; then 
+	mtd unlock linux
+	mount | grep jffs2 >&-
+	if [ $? = 0 ] ; then
+		mount -o remount,rw /dev/root /
+	else
+		. /bin/firstboot
+		is_dirty 
+		[ $? != 0 ] && {
+			echo "switching to jffs2"
+			mount /dev/mtdblock/4 /jffs -t jffs2
+			fopivot /jffs /rom
+		} || {
+			echo "jffs2 not ready yet; using ramdisk"
+			ramoverlay
+		}
+	fi
+fi
+
+mkdir -p /dev/pts
+mount none /dev/pts -t devpts 2>&-
+grep sysfs /proc/filesystems >/dev/null && mount -t sysfs none /sys 2>&-

target/linux/brcm-2.4/src/jffs2root.c

@@ -0,0 +1,133 @@
+/*
+ * jffs2root.c
+ *
+ * Copyright (C) 2005 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Id$
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+#include "mtd.h"
+
+#define FILENAME "/dev/mtdblock/1"
+
+struct trx_header {
+	unsigned magic;		/* "HDR0" */
+	unsigned len;		/* Length of file including header */
+	unsigned crc32;		/* 32-bit CRC from flag_version to end of file */
+	unsigned flag_version;	/* 0:15 flags, 16:31 version */
+	unsigned offsets[3];	/* Offsets of partitions from start of header */
+};
+
+unsigned long *crc32;
+
+void init_crc32()
+{
+	unsigned long crc;
+	unsigned long poly = 0xEDB88320L;
+	int n, bit;
+	if ((crc32 = (unsigned long *) malloc(256 * sizeof(unsigned long))) == (void *)-1) {
+		perror("malloc");
+		exit(1);
+	}
+	for (n = 0; n < 256; n++) {
+	crc = (unsigned long) n;
+	for (bit = 0; bit < 8; bit++)
+		crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1);
+	crc32[n] = crc;
+	}
+}
+
+unsigned int crc32buf(char *buf, size_t len)
+{
+	unsigned int crc = 0xFFFFFFFF;
+	for (; len; len--, buf++)
+	crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8);
+	return crc;
+}
+
+int main(int argc, char **argv)
+{
+	int fd;
+	struct mtd_info_user mtdInfo;
+	unsigned long len;
+	struct trx_header *ptr;
+	char *buf;
+	
+	if (((fd = open(FILENAME, O_RDWR))	< 0)
+			|| ((len = lseek(fd, 0, SEEK_END)) < 0)
+			|| ((ptr = (struct trx_header *) mmap(0, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1))
+			|| (ptr->magic != 0x30524448)) {
+		printf("Error reading trx info\n");
+		exit(-1);
+	}
+	close (fd);
+
+	if (((fd = open("/dev/mtd/1", O_RDWR))	< 0)
+			|| (ioctl(fd, MEMGETINFO, &mtdInfo))) {
+		fprintf(stderr, "Could not get MTD device info from %s\n", FILENAME);
+		close(fd);
+		exit(1);
+	}
+	close(fd);
+
+	if (argc > 1 && !strcmp(argv[1],"--move")) {
+		if (ptr->offsets[2] >= ptr->len) {
+			printf("Partition already moved outside trx\n");
+		} else {
+			init_crc32();
+			ptr->offsets[2] +=	(mtdInfo.erasesize - 1);
+			ptr->offsets[2] &= ~(mtdInfo.erasesize - 1);
+			ptr->len = ptr->offsets[2];
+			ptr->crc32 = crc32buf((void *) &(ptr->flag_version), ptr->len - offsetof(struct trx_header, flag_version));
+			msync(ptr,sizeof(struct trx_header),MS_SYNC|MS_INVALIDATE);
+			printf("Partition moved; please reboot\n");
+		}
+	} else if (argc > 1 && !strcmp(argv[1], "--clean")) {
+		buf = (char *) ptr;
+		if (buf[ptr->offsets[1] - 1] == 0) {
+			init_crc32();
+			buf[ptr->offsets[1] - 1] = 1;
+			ptr->crc32 = crc32buf((void *) &(ptr->flag_version), ptr->len - offsetof(struct trx_header, flag_version));
+			msync(ptr,sizeof(struct trx_header),MS_SYNC|MS_INVALIDATE);
+			printf("Partition marked as clean\n");
+		}
+	} else {
+		int x;
+		printf(" erase: 0x%08x\n",mtdInfo.erasesize);
+		printf("=== trx ===\n");
+		printf("mapped: 0x%08x\n", (unsigned)ptr);
+		printf(" magic: 0x%08x\n", ptr->magic);
+		printf("	 len: 0x%08x\n", ptr->len);
+		printf("	 crc: 0x%08x\n", ptr->crc32);
+		for (x = 0; x < 3; x++)
+			printf(" offset[%d]: 0x%08x\n", x, ptr->offsets[x]);
+	}
+
+	munmap((void *) ptr, len);
+	return 0;
+}

target/linux/brcm-2.4/src/mtd.h

@@ -0,0 +1,304 @@
+
+/* $Id: mtd.h,v 1.38 2003/01/12 16:30:19 spse Exp $ */
+
+#ifndef __MTD_MTD_H__
+#define __MTD_MTD_H__
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/mtd/compatmac.h>
+#include <linux/notifier.h>
+#include <linux/module.h>
+#include <linux/uio.h>
+
+#endif /* __KERNEL__ */
+
+struct erase_info_user {
+	u_int32_t start;
+	u_int32_t length;
+};
+
+struct mtd_oob_buf {
+	u_int32_t start;
+	u_int32_t length;
+	unsigned char *ptr;
+};
+
+
+#define MTD_CHAR_MAJOR 90
+#define MTD_BLOCK_MAJOR 31
+#define MAX_MTD_DEVICES 16
+
+
+
+#define MTD_ABSENT		0
+#define MTD_RAM			1
+#define MTD_ROM			2
+#define MTD_NORFLASH		3
+#define MTD_NANDFLASH		4
+#define MTD_PEROM		5
+#define MTD_OTHER		14
+#define MTD_UNKNOWN		15
+
+
+
+#define MTD_CLEAR_BITS		1       // Bits can be cleared (flash)
+#define MTD_SET_BITS		2       // Bits can be set
+#define MTD_ERASEABLE		4       // Has an erase function
+#define MTD_WRITEB_WRITEABLE	8       // Direct IO is possible
+#define MTD_VOLATILE		16      // Set for RAMs
+#define MTD_XIP			32	// eXecute-In-Place possible
+#define MTD_OOB			64	// Out-of-band data (NAND flash)
+#define MTD_ECC			128	// Device capable of automatic ECC
+
+// Some common devices / combinations of capabilities
+#define MTD_CAP_ROM		0
+#define MTD_CAP_RAM		(MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
+#define MTD_CAP_NORFLASH        (MTD_CLEAR_BITS|MTD_ERASEABLE)
+#define MTD_CAP_NANDFLASH       (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
+#define MTD_WRITEABLE		(MTD_CLEAR_BITS|MTD_SET_BITS)
+
+
+// Types of automatic ECC/Checksum available
+#define MTD_ECC_NONE		0 	// No automatic ECC available
+#define MTD_ECC_RS_DiskOnChip	1	// Automatic ECC on DiskOnChip
+#define MTD_ECC_SW		2	// SW ECC for Toshiba & Samsung devices
+
+struct mtd_info_user {
+	u_char type;
+	u_int32_t flags;
+	u_int32_t size;	 // Total size of the MTD
+	u_int32_t erasesize;
+	u_int32_t oobblock;  // Size of OOB blocks (e.g. 512)
+	u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+	u_int32_t ecctype;
+	u_int32_t eccsize;
+};
+
+struct region_info_user {
+	u_int32_t offset;		/* At which this region starts, 
+					 * from the beginning of the MTD */
+	u_int32_t erasesize;		/* For this region */
+	u_int32_t numblocks;		/* Number of blocks in this region */
+	u_int32_t regionindex;
+};
+
+#define MEMGETINFO              _IOR('M', 1, struct mtd_info_user)
+#define MEMERASE                _IOW('M', 2, struct erase_info_user)
+#define MEMWRITEOOB             _IOWR('M', 3, struct mtd_oob_buf)
+#define MEMREADOOB              _IOWR('M', 4, struct mtd_oob_buf)
+#define MEMLOCK                 _IOW('M', 5, struct erase_info_user)
+#define MEMUNLOCK               _IOW('M', 6, struct erase_info_user)
+#define MEMGETREGIONCOUNT	_IOR('M', 7, int)
+#define MEMGETREGIONINFO	_IOWR('M', 8, struct region_info_user)
+#define	MEMREADDATA             _IOWR('M', 9, struct mtd_oob_buf)
+#define	MEMWRITEDATA            _IOWR('M', 10, struct mtd_oob_buf)
+
+#ifndef __KERNEL__
+
+typedef struct mtd_info_user mtd_info_t;
+typedef struct erase_info_user erase_info_t;
+typedef struct region_info_user region_info_t;
+
+	/* User-space ioctl definitions */
+
+
+#else /* __KERNEL__ */
+
+
+#define MTD_ERASE_PENDING      	0x01
+#define MTD_ERASING		0x02
+#define MTD_ERASE_SUSPEND	0x04
+#define MTD_ERASE_DONE          0x08
+#define MTD_ERASE_FAILED        0x10
+
+struct erase_info {
+	struct mtd_info *mtd;
+	u_int32_t addr;
+	u_int32_t len;
+	u_long time;
+	u_long retries;
+	u_int dev;
+	u_int cell;
+	void (*callback) (struct erase_info *self);
+	u_long priv;
+	u_char state;
+	struct erase_info *next;
+};
+
+struct mtd_erase_region_info {
+	u_int32_t offset;			/* At which this region starts, from the beginning of the MTD */
+	u_int32_t erasesize;		/* For this region */
+	u_int32_t numblocks;		/* Number of blocks of erasesize in this region */
+};
+
+struct mtd_info {
+	u_char type;
+	u_int32_t flags;
+	u_int32_t size;	 // Total size of the MTD
+
+	/* "Major" erase size for the device. Na<4E>ve users may take this
+	 * to be the only erase size available, or may use the more detailed
+	 * information below if they desire
+	 */
+	u_int32_t erasesize;
+
+	u_int32_t oobblock;  // Size of OOB blocks (e.g. 512)
+	u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+	u_int32_t ecctype;
+	u_int32_t eccsize;
+
+	// Kernel-only stuff starts here.
+	char *name;
+	int index;
+
+	/* Data for variable erase regions. If numeraseregions is zero,
+	 * it means that the whole device has erasesize as given above. 
+	 */
+	int numeraseregions;
+	struct mtd_erase_region_info *eraseregions; 
+
+	/* This really shouldn't be here. It can go away in 2.5 */
+	u_int32_t bank_size;
+
+	struct module *module;
+	int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
+
+	/* This stuff for eXecute-In-Place */
+	int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
+
+	/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
+	void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len);
+
+
+	int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+	int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
+
+	int (*read_ecc) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, int oobsel);
+	int (*write_ecc) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, int oobsel);
+
+	int (*read_oob) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+	int (*write_oob) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
+
+	/* 
+	 * Methods to access the protection register area, present in some 
+	 * flash devices. The user data is one time programmable but the
+	 * factory data is read only. 
+	 */
+	int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
+	int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
+	/* This function is not yet implemented */
+	int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
+	/* iovec-based read/write methods. We need these especially for NAND flash,
+	   with its limited number of write cycles per erase.
+	   NB: The 'count' parameter is the number of _vectors_, each of 
+	   which contains an (ofs, len) tuple.
+	*/
+	int (*readv) (struct mtd_info *mtd, struct iovec *vecs, unsigned long count, loff_t from, size_t *retlen);
+	int (*readv_ecc) (struct mtd_info *mtd, struct iovec *vecs, unsigned long count, loff_t from, 
+		size_t *retlen, u_char *eccbuf, int oobsel);
+	int (*writev) (struct mtd_info *mtd, const struct iovec *vecs, unsigned long count, loff_t to, size_t *retlen);
+	int (*writev_ecc) (struct mtd_info *mtd, const struct iovec *vecs, unsigned long count, loff_t to, 
+		size_t *retlen, u_char *eccbuf, int oobsel);
+
+	/* Sync */
+	void (*sync) (struct mtd_info *mtd);
+
+	/* Chip-supported device locking */
+	int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+	int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+
+	/* Power Management functions */
+	int (*suspend) (struct mtd_info *mtd);
+	void (*resume) (struct mtd_info *mtd);
+
+	struct notifier_block reboot_notifier;
+
+	void *priv;
+};
+
+
+	/* Kernel-side ioctl definitions */
+
+extern int add_mtd_device(struct mtd_info *mtd);
+extern int del_mtd_device (struct mtd_info *mtd);
+
+extern struct mtd_info *__get_mtd_device(struct mtd_info *mtd, int num);
+
+static inline struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)
+{
+	struct mtd_info *ret;
+	
+	ret = __get_mtd_device(mtd, num);
+
+	if (ret && ret->module && !try_inc_mod_count(ret->module))
+		return NULL;
+
+	return ret;
+}
+
+static inline void put_mtd_device(struct mtd_info *mtd)
+{
+       if (mtd->module)
+	       __MOD_DEC_USE_COUNT(mtd->module);
+}
+
+
+struct mtd_notifier {
+	void (*add)(struct mtd_info *mtd);
+	void (*remove)(struct mtd_info *mtd);
+	struct mtd_notifier *next;
+};
+
+
+extern void register_mtd_user (struct mtd_notifier *new);
+extern int unregister_mtd_user (struct mtd_notifier *old);
+
+int default_mtd_writev(struct mtd_info *mtd, const struct iovec *vecs,
+		       unsigned long count, loff_t to, size_t *retlen);
+
+int default_mtd_readv(struct mtd_info *mtd, struct iovec *vecs,
+		      unsigned long count, loff_t from, size_t *retlen);
+
+#ifndef MTDC
+#define MTD_ERASE(mtd, args...) (*(mtd->erase))(mtd, args)
+#define MTD_POINT(mtd, a,b,c,d) (*(mtd->point))(mtd, a,b,c, (u_char **)(d))
+#define MTD_UNPOINT(mtd, arg) (*(mtd->unpoint))(mtd, (u_char *)arg)
+#define MTD_READ(mtd, args...) (*(mtd->read))(mtd, args)
+#define MTD_WRITE(mtd, args...) (*(mtd->write))(mtd, args)
+#define MTD_READV(mtd, args...) (*(mtd->readv))(mtd, args)
+#define MTD_WRITEV(mtd, args...) (*(mtd->writev))(mtd, args)
+#define MTD_READECC(mtd, args...) (*(mtd->read_ecc))(mtd, args)
+#define MTD_WRITEECC(mtd, args...) (*(mtd->write_ecc))(mtd, args)
+#define MTD_READOOB(mtd, args...) (*(mtd->read_oob))(mtd, args)
+#define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args)
+#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd);  } while (0) 
+#endif /* MTDC */
+
+/*
+ * Debugging macro and defines
+ */
+#define MTD_DEBUG_LEVEL0	(0)	/* Quiet   */
+#define MTD_DEBUG_LEVEL1	(1)	/* Audible */
+#define MTD_DEBUG_LEVEL2	(2)	/* Loud    */
+#define MTD_DEBUG_LEVEL3	(3)	/* Noisy   */
+
+#ifdef CONFIG_MTD_DEBUG
+#define DEBUG(n, args...)				\
+ 	do {						\
+		if (n <= CONFIG_MTD_DEBUG_VERBOSE)	\
+			printk(KERN_INFO args);		\
+	} while(0)
+#else /* CONFIG_MTD_DEBUG */
+#define DEBUG(n, args...)
+#endif /* CONFIG_MTD_DEBUG */
+
+#endif /* __KERNEL__ */
+
+#endif /* __MTD_MTD_H__ */