dtb+uImage,dtb+zImage

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build.sh

#!/bin/sh
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
export LOADADDR=0X8000
make -j4 zImage
test $? || exit 1
make dtbs
test $? || exit 1
#     dtb     ，   cat *.dtb >> zImage,   zImage     bootz  
#    ，uImage+dtb   ，       dtb zImage->make uImage->uImage   
#uImage+dtb  FIT-uImage
cat arch/arm/boot/dts/socfpga_arria5_socdk.dtb >> arch/arm/boot/zImage
make uImage
cp -v arch/arm/boot/uImage ~/ftp/

ubootカーネルuImageを一時的にロードしnfsで起動

setenv serverip 192.168.200.52
setenv nfsroot "/dev/nfs"
setenv nfsip  "192.168.200.52"
setenv nfsdir  "/mnt/nfsroot,nfsvers=3"
setenv loadaddr 0x01000000
setenv fdtaddr 0x02000000
setenv bootimage uImage
setenv fdtimage socfpga_arria5_socdk.dtb
setenv nfsipopt "192.168.200.166::::::off"
setenv nfsload "tftp ${loadaddr} ${bootimage};tftp ${fdtaddr} ${fdtimage}"
setenv nfsboot "setenv bootargs console=ttyS0,115200 noinitrd rdinit=/linuxrc root=${nfsroot} rw nfsroot=${nfsip}:${nfsdir} ip=${nfsipopt};bootm ${loadaddr} - ${fdtaddr}"
setenv bootcmd "run nfsload; run nfsboot"
boot