WRT54GL v1.1 sd card mod with openwrt

Here is the colors I used to connect the ssd card




The blue cable, that goes with the pin of the DMZ led.

The yellow,green an red cables.

The brown and white cables

Here is the mini sd with the adapter


Now everything is fine, you should install mmc driver and then format to mount it.

download this driver and then run the following commands

tar xzvf mmc-v1.3.4-gpio2.tgz
cp mmc-v1.3.4-gpio2/mmc-v1.3.4-gpio2/mmc /lib/modules/2.4.35.4
insmod mmc (comment: at this point check with dmesg if every thing is ok)
mkfs.ext3 dev/mmc/disc0/part1

LEDS blink while using the sd card :D


mount the ssd

[ -d /mnt ] || mkdir /mnt
mount -t ext3 -o noatime /dev/mmc/disc0/part1 /mnt
grep /mnt /proc/mounts

Now this is for using the sd card as root (/)
First, copy everything in the sd card.

mkdir /tmp/orig
mount -o bind / /tmp/orig  
tar -c -C /tmp/orig -f - . | tar -xv -C /mnt -f -
umount /tmp/orig
rmdir /tmp/orig
rm -r /mnt/etc/* 
umount /mnt

Next step is to create the following script at /etc/init.d/bootext

#!/bin/sh /etc/rc.common

START=11
STOP=91

bootext_cleanup() { # [cleanup_level]
[ "$1" -ge 3 ] && grep -q '^[^ ]* /rom ' /proc/mounts && mount -o move /rom $putold/rom
[ "$1" -ge 2 ] && { . $putold/bin/firstboot ; pivot $putold $target ; }
[ "$1" -ge 1 ] && umount -l $target/etc
return 0
}

bootext_fail() { #  [cleanup_level]
echo "$1" >&2
[ ! "$2" ] || bootext_cleanup $2
exit 1
}

bootext_quit() { # 
echo "$1" >&2
exit 0
}

bootext_start() {
! grep -q "^$device / " /proc/mounts || bootext_quit "$name already on /"

if ! grep -q "^$device $target " /proc/mounts
then
! grep -q "^$device " /proc/mounts || bootext_fail "$name already mounted"

for module in $modules
do
if ! grep -q "^$module " /proc/modules
then
[ $module != mmc ] || [ ! "$gpiomask" ] || echo "$gpiomask" > /proc/diag/gpiomask || bootext_fail "could not set gpiomask"
insmod $module || bootext_fail "could not insert $module module"
fi
done

while [ ! -b $device ]
do
[ "$waitdev" -gt 0 ] || bootext_fail "$device does not exist"
waitdev=$(( $waitdev - 1 ))
sleep 1
done

[ -d $target ] || mkdir $target || bootext_fail "could not create mountpoint $target"
mount ${filesys:+-t $filesys} ${mountopt:+-o $mountopt} $device $target || bootext_fail "could not mount $name on $target"
fi

[ -d $target$putold ] || mkdir $target$putold || bootext_fail "could not create mountpoint $putold"
[ -d $target/etc ] || mkdir $target/etc || bootext_fail "could not create mountpoint /etc"
mount -o bind /etc $target/etc || bootext_fail "could not bind mount /etc"

. /bin/firstboot
pivot $target $putold || bootext_fail "could not pivot to $target" 1

! grep -q "^[^ ]* $putold/rom " /proc/mounts || { [ -d /rom ] || mkdir /rom && mount -o move $putold/rom /rom ; }

return 0
}

bootext_stop() {
grep -q "^$device / " /proc/mounts || bootext_quit "$name not on /"

bootext_cleanup 999
}

bootext_config() { # 
 
local section=$1
local action=$2
local enabled device name target putold modules gpiomask waitdev filesys mountopt

config_get_bool enabled $section enabled 1
[ "$enabled" -gt 0 ] || return 0
config_get device $section device
[ "$device" ] || bootext_fail "external boot device not configured"
config_get name $section name
config_get target $section target
config_get putold $section putold
config_get modules $section modules
config_get gpiomask $section gpiomask
config_get waitdev $section waitdev
config_get filesys $section filesys
config_get mountopt $section mountopt

[ "$name" ] || name="$device"
[ "$putold" ] || putold="${target:-/old}"
[ "$target" ] || target="/${filesys:-new}"

bootext_$action
}

start() {
config_load bootfromexternalmedia
config_foreach bootext_config bootfromexternalmedia start
}

stop() {
config_load bootfromexternalmedia
config_foreach bootext_config bootfromexternalmedia stop
}

chmod a+x /etc/init.d/bootext

Also you will need the configuration file /etc/config/bootfromexternalmedia with the following contents

config bootfromexternalmedia
        option enabled  '1'
        option device   '/dev/mmc/disc0/part1'
        option name     'mmc'
        option target   '/mnt'
        option putold   '/mnt'
        option modules  'mmc jbd ext3'
        option gpiomask '0x9c'
        option waitdev  '0'
        option filesys  'ext3'
        option mountopt 'noatime'

For reference of the configuration parameters go to openwrt wiki .

now execute /etc/init.d/bootext start and if everythig is ok you shoul be using the sd card at root (/) . Try df to see this.