HOWTO - Debian on Checkpoint L-50 with Openwrt fallback

setenv bootdev usb
setenv device '0:1'
setenv set_bootargs 'setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts earlyprintk=serial'
setenv dtb_file '/boot/dts/kirkwood-l-50.dtb'
setenv load_uimage_addr 0x800000
setenv load_uimage 'echo loading uImage ...; ext2load $bootdev $device $load_uimage_addr /boot/uImage'
setenv load_initrd_addr 0x1100000
setenv load_initrd 'echo loading uInitrd ...; ext2load $bootdev $device $load_initrd_addr /boot/uInitrd'
setenv load_dtb_addr 0x2c00000
setenv load_dtb 'echo loading DTB $dtb_file ...; ext2load $bootdev $device $load_dtb_addr $dtb_file'
setenv bootcmd_exec 'if run load_uimage; then; if run load_initrd; then if run load_dtb; then bootm $load_uimage_addr $load_initrd_addr $load_dtb_addr; else bootm $load_uimage_addr $load_initrd_addr; fi; else if run load_dtb; then bootm $load_uimage_addr - $load_dtb_addr; else bootm $load_uimage_addr; fi; fi; fi'
setenv bootcmd 'usb start; run set_bootargs; run bootcmd_exec; reset'
saveenv

deb http://ftp.us.debian.org/debian bullseye main contrib non-free
deb-src http://ftp.us.debian.org/debian bullseye main contrib non-free

deb http://security.debian.org/debian-security bullseye-security main contrib non-free

deb  http://http.debian.net/debian bullseye-updates main contrib non-free
deb-src http://http.debian.net/debian bullseye-updates main contrib non-free

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Prerequisites : Openwrt installed on the Device following the instructions here

Prerequisites : rootfs prepared on usb key using Debian-5.13.6-kirkwood-tld-1-rootfs-bodhi.tar.bz2 following the instructions here

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Once Openwrt is installed and booted, login and modify your u-boot variables to include the following, copy and paste if you wish, but i don't advocate doing it blindly - it should work, but be certain you have backed up your uboot environment variables before you start using the fw_printenv command from the Openwrt console

setenv bootdev usb
setenv device '0:1'
setenv set_bootargs 'setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts earlyprintk=serial'
setenv dtb_file '/boot/dts/kirkwood-l-50.dtb'
setenv load_uimage_addr 0x800000
setenv load_uimage 'echo loading uImage ...; ext2load $bootdev $device $load_uimage_addr /boot/uImage'
setenv load_initrd_addr 0x1100000
setenv load_initrd 'echo loading uInitrd ...; ext2load $bootdev $device $load_initrd_addr /boot/uInitrd'
setenv load_dtb_addr 0x2c00000
setenv load_dtb 'echo loading DTB $dtb_file ...; ext2load $bootdev $device $load_dtb_addr $dtb_file'
setenv bootcmd_exec 'if run load_uimage; then; if run load_initrd; then if run load_dtb; then bootm $load_uimage_addr $load_initrd_addr $load_dtb_addr; else bootm $load_uimage_addr $load_initrd_addr; fi; else if run load_dtb; then bootm $load_uimage_addr - $load_dtb_addr; else bootm $load_uimage_addr; fi; fi; fi'
setenv bootcmd 'usb start; run set_bootargs; run bootcmd_exec; reset'

saveenv