diff options
Diffstat (limited to 'target/linux/brcm-2.4')
-rw-r--r-- | target/linux/brcm-2.4/base-files.mk | 12 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/bin/firstboot | 128 | ||||
-rw-r--r-- | target/linux/brcm-2.4/base-files/etc/diag.sh | 28 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/etc/init.d/done | 15 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/etc/init.d/netconfig | 98 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/etc/preinit | 74 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/sbin/hotplug.failsafe | 4 | ||||
-rwxr-xr-x | target/linux/brcm-2.4/base-files/sbin/mount_root | 31 | ||||
-rw-r--r-- | target/linux/brcm-2.4/src/jffs2root.c | 133 | ||||
-rw-r--r-- | target/linux/brcm-2.4/src/mtd.h | 304 |
10 files changed, 827 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/base-files.mk b/target/linux/brcm-2.4/base-files.mk new file mode 100644 index 0000000..9a2e365 --- /dev/null +++ b/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 + + diff --git a/target/linux/brcm-2.4/base-files/bin/firstboot b/target/linux/brcm-2.4/base-files/bin/firstboot new file mode 100755 index 0000000..c3d9a64 --- /dev/null +++ b/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 +} diff --git a/target/linux/brcm-2.4/base-files/etc/diag.sh b/target/linux/brcm-2.4/base-files/etc/diag.sh new file mode 100644 index 0000000..3b08554 --- /dev/null +++ b/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 +} diff --git a/target/linux/brcm-2.4/base-files/etc/init.d/done b/target/linux/brcm-2.4/base-files/etc/init.d/done new file mode 100755 index 0000000..0640b61 --- /dev/null +++ b/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 +} diff --git a/target/linux/brcm-2.4/base-files/etc/init.d/netconfig b/target/linux/brcm-2.4/base-files/etc/init.d/netconfig new file mode 100755 index 0000000..fe39f50 --- /dev/null +++ b/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 +} diff --git a/target/linux/brcm-2.4/base-files/etc/preinit b/target/linux/brcm-2.4/base-files/etc/preinit new file mode 100755 index 0000000..30aed35 --- /dev/null +++ b/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 diff --git a/target/linux/brcm-2.4/base-files/sbin/hotplug.failsafe b/target/linux/brcm-2.4/base-files/sbin/hotplug.failsafe new file mode 100755 index 0000000..0544339 --- /dev/null +++ b/target/linux/brcm-2.4/base-files/sbin/hotplug.failsafe @@ -0,0 +1,4 @@ +#!/bin/sh +case "$1" in + button) kill -USR1 1;; +esac diff --git a/target/linux/brcm-2.4/base-files/sbin/mount_root b/target/linux/brcm-2.4/base-files/sbin/mount_root new file mode 100755 index 0000000..ffa6072 --- /dev/null +++ b/target/linux/brcm-2.4/base-files/sbin/mount_root @@ -0,0 +1,31 @@ +#!/bin/sh +# Copyright (C) 2006 OpenWrt.org + +is_dirty() { + grep Broadcom /proc/cpuinfo >&- || return 1 + OFFSET="$(($(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>&- diff --git a/target/linux/brcm-2.4/src/jffs2root.c b/target/linux/brcm-2.4/src/jffs2root.c new file mode 100644 index 0000000..3562eb4 --- /dev/null +++ b/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; +} diff --git a/target/linux/brcm-2.4/src/mtd.h b/target/linux/brcm-2.4/src/mtd.h new file mode 100644 index 0000000..8b83afd --- /dev/null +++ b/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. Naïve 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__ */ |