NSLU2

slugimage - manipulate NSLU2 firmware images
flash-kernel - write kernel and ramdisk images
mkinitramfs - make initramfs images
apex-env - manipulate bootloader command line
upslug2 - update slug flash image (run from host system)

----

cat /proc/mtd 			-- list flash partitions
cat /dev/mtdblock* > image 	-- Make backup of flash image
slugimage -u -i image 		-- unpack flash image into separate files

apex-env setenv cmdline "console=ttyS0,115200 rtc-x1205.probe=0,0x6f noirqdebug root=/dev/nfs nfsroot=172.16.0.1:/tftpboot/slug1/disk ip=bootp"

slugimage -p -b RedBoot -s SysConf -L apex.bin -k vmlinuz -r ramdisk.gz -t Trailer -o repack.bin

Code: Fix for slugimage

--- slugimage 2010-06-27 16:51:01.000000000 -0400 +++ /usr/bin/slugimage 2010-06-27 16:36:32.000000000 -0400 @@ -71,10 +71,10 @@ # Take $data, and pad it out to $total_len bytes, appending 0xff's. sub padBytes { - my($data,$total_len) = @_; + my($data,$total_len,$pad_char) = @_; # 0xFF is used to pad, as it's the erase value of the flash. - my($pad_char) = pack("C",0xff); + $pad_char = pack("C",0xff) unless (defined ($pad_char)); my($pad_len) = $total_len - length($data); # A request for negative padding is indicative of a logic error ... @@ -803,7 +803,7 @@ # Splice the data into the image at the appropriate place, padding as required. substr($image_buf, $_->{'offset'}, $_->{'size'}, $_->{'header'} ? - padBytes(pack("N4",length($_->{'data'})).$_->{'data'}, $_->{'size'}) : + padBytes(pack("N4",length($_->{'data'})).$_->{'data'}, $_->{'size'}, pack ("C", ($_->{'name'} eq 'Ramdisk') ? 0x00 : 0xff)) : padBytes($_->{'data'}, $_->{'size'})); # Keep the user appraised ...

• Get image from http://www.slug-firmware.net/d-dls.php
• Unzip image on host machine
• Disconnect any attached USB devices from NSLU2
• Make sure NSLU2 is powered off
• Pressing 'reset' button inside small hole on back, press power button.
• Continue pressing 'reset' until the top LED turns red; immediately release reset button
• Upgrade using upslug2 --image di-nslu2.bin
• When upslug2 completes, attach 2GB+ disk or memory stick
• After NSLU2 finishes booting (3 pathetic beeps), ssh to installer@<slug_ip_address>
• Answer questions installer will ask
• After installer completes and NSLU2 reboots, ssh as root to NSLU2
• apt-get update
• apt-get upgrade
• apt-get install gcc libncurses5-dev linux-image-2.6.26-2-ixp4xx initramfs-tools
• cd /root
• cat /dev/mtdblock* > flash_backup.bin
• Move 'flash_backup.bin' to host machine
• cd /root/linux-2.6-2.6.26
• make menuconfig
• Goto Networking->Networking options->IP: kernel level autoconfiguration and press 'Y'
• Goto File systems->Network File Systems->NFS file system support and press 'Y'
• Goto File systems->Network File Systems->Root file system on NFS and press 'Y'
• Enable IP: DHCP support and IP:BOOTP support
• Exit menuconfig, saving new configuration
• make
• make modules_install
• cd
• mkdir temp
• cd temp
• mkinitramfs -k -o initramfs-2.6.26.gz 2.6.26
• mkdir initramfs
• cd initramfs
• zcat ../initramfs-2.6.26.gz | cpio -i
• mkdir -p lib/firmware
• cp -a /lib/firmware/* lib/firmware
• find . | cpio --quiet -o -H newc | gzip -9 > ../initramfs-2.6.26.gz
• cd ..
• rm -rf initramfs
• dd if=initramfs-2.6.26.gz of=initramfs-2.6.26-pad.gz ibs=6291440 conv=sync
• devio '<< initramfs-2.6.26-pad.gz; xp $ 4' >initramfs-2.6.26-new.gz
• rm -rf initramfs initramfs-2.6.26-pad.gz
• cp ~/linux/arch/arm/boot/zImage .
• devio '<< zImage; xp $ 4' > zImage-swap
• apex-env setenv cmdline "console=ttyS0,115200 rtc-x1205.probe=0,0x6f noirqdebug root=/dev/nfs nfsroot=172.16.0.1:/tftpboot/slug1/disk ip=bootp"
• cat /dev/mtdblock* > flash.bin
• apex-env setenv cmdline "console=ttyS0,115200 rtc-x1205.probe=0,0x6f noirqdebug"
• slugimage -u -i flash.bin
• slugimage -l -L apex.bin -r initramfs-2.6.26.gz -k zImage -p -o di-nslu2-new.bin
• Move the di-nslu2-new.bin file to the host machine