README_netboot_uboot

U-boot network boot
-------------------

setenv 'bootkfile' 'uImage+dtb'
setenv 'bootkaddr' '0x40007fc0'

setenv 'bootifile' 'initramfs-netboot-image-porter.ext4.gz.u-boot'
setenv 'bootiaddr' '0x50000000'

setenv 'bootargs_console' 'console=ttySC6,38400 ignore_loglevel'
setenv 'bootargs_video' 'vmalloc=384M video=HDMI-A-1:1280x960-32@60'
setenv 'bootargs_extra' 'rw rootfstype=ext4 rootwait rootdelay=2'

# network setup depends on location

## SDX 
setenv 'ipaddr' '10.0.0.27'
setenv 'serverip' '10.0.0.15'

## IoT office
setenv 'ipaddr' '10.20.1.72'
setenv 'serverip' '10.20.1.22'

setenv 'bootargs_root' 'root=/dev/ram0 ramdisk_size=16384 ip=dhcp'
setenv 'bootkload_net' 'tftp ${bootkaddr} porter/${bootkfile}'
setenv 'bootiload_net' 'tftp ${bootiaddr} porter/${bootifile}'
setenv 'bootcmd' 'setenv bootargs ${bootargs_console} ${bootargs_video} ${bootargs_root} ${bootargs_extra} nbd.server=${serverip}; run bootkload_net; run bootiload_net; bootm ${bootkaddr} ${bootiaddr}'


U-boot MMC boot
---------------

setenv 'bootargs_root' 'root=/dev/mmcblk0p1' 
setenv 'bootmmc' '1:1'
setenv 'bootkload_sd' 'ext4load mmc ${bootmmc} ${bootkaddr} boot/${bootkfile}'
setenv 'bootcmd' 'setenv bootargs ${bootargs_console} ${bootargs_video} ${bootargs_root} ${bootargs_extra}; run bootkload_sd; bootm ${bootkaddr}'


U-boot MMC boot with initrd
---------------------------

setenv 'bootargs_root' 'root=/dev/ram0 ramdisk_size=16384'
setenv 'bootmmc' '1:1'
setenv 'bootkload_sd' 'ext4load mmc ${bootmmc} ${bootkaddr} boot/${bootkfile}'
setenv 'bootiload_sd' 'ext4load mmc ${bootmmc} ${bootiaddr} boot/${bootifile}'
setenv 'bootcmd' 'setenv bootargs ${bootargs_console} ${bootargs_video} ${bootargs_root} ${bootargs_extra}; run bootkload_sd; run bootiload_sd; bootm ${bootkaddr} ${bootiaddr}'