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To generate the main U-Boot boot loader, type:
    make uboot                  (Places the image u-boot.img into softwae/spl_bsp/uboot-socfpga)

Device Tree Blob

Interface

Linux requires a DTB file to start the Kernel properly

Lastly, the Device Tree Blob must be generated, whereby Linux can start automated without user interaction.

It acts as an Interface from the board hardware to the Linux Kernel. The .dtb file DTB informs the Linux Kernel about the existing Hardware,
its Configuration and which driver to use for controlling it.

Generate   - .dtb or .dts file from .sopcinfo file

C:\intelFPGA\18.1\embedded\examples\hardware\cv_soc_devkit_ghrd\tgz\soc_system_18_1_09132018_94307.tar.gz

Extract to your project folder via:

mkdir c:/temp/Project/ghrd_cyc5
cp c:/intelFPGA/18.1/embedded/examples/hardware/cv_soc_devkit_ghrd/tgz/soc_system_18_1_09132018_94307.tar.gz c:/temp/Project/ghrd_cyc5

cd c:/temp/Project/ghrd_cyc5

tar xvf soc_system_18_1_09132018_94307.tar.gz

Das Programm "Device Tree Generator" / sopc2dts erzeugt ihn.

Unter "C:\intelFPGA\18.1\embedded\examples\hardware" findet sich das ghrd / Golden hardware standard
nach z.b.
driveLetter/PathToFolder/cv_soc_devkit_ghrd
entpacken
Aus dem Projekt nach nutzung des "Platform designers" , die erzeugt ....sopinfo in den Ordner kopieren.

Soc EDS Shell öffnen [Normal user is sufficient]
cd driveLetter:
cd driveLetter/PathToFolder/cv_soc_devkit_ghrd

k.jahn@PC02758 /cygdrive/d/ENTW/TEI0022/Spl-Uboot_V1.2/DTB/cv_soc_devkit_ghrd
sopc2dts --input HPS.sopcinfo --output DTBsocfpga.dtb --type dtb --board hps_common_board_info.xml --bridge-removal all --clocks

Kurzform:
sopc2dts -i HPS.sopcinfo -o DTBsocfpga.dtb -t dtb --board hps_common_board_info.xml --bridge-removal all --clocks

dts anstatt dtb erzeugen:
$ sopc2dts -i HPS.sopcinfo -o DTBsocfpga.dts -t dts --board hps_common_board_info.xml --bridge-removal all --clocks

Decompile - .dtb file to .dts file

C:\intelFPGA\18.1\embedded\host_tools\gnu\dtc\   dtc.exe

cd /cygdrive/c/intelFPGA/18.1/embedded/host_tools/gnu/dtc

dtc -I dts -O dtb -o device-tree.dtb devicetree.dts

Generate   - .dts file to .dtb file

cd /cygdrive/c/intelFPGA/18.1/embedded/host_tools/gnu/dtc

dtc -I dtb -O dts -o devicetree.dts soc_system.dtb