Overload the following device tree immediately after boot:

dts-v1/; /plugin/;
/ {
        fragment@0 {
                target-path = "/fpga-full";
                __overlay__ {
                        firmware-name = "qconv_strip_axi.bin";
                };
        };
        fragment@1 {
                target-path = "/amba_pl@0";
                #address-cells = <2>;
                #size-cells = <2>;

                __overlay__ {
                        #address-cells = <2>;
                        #size-cells = <2>;

                        afi0 {
                                compatible    = "xlnx,afi-fpga";
                                config-afi    = <0 0>, <1 0>, <14 0x200>;
                        };
                        clocking0: clocking0 {
                                #clock-cells = <0>;
                                assigned-clock-rates = <250000000>;
                                assigned-clocks = <&zynqmp_clk 71>;
                                clock-output-names = "fabric_clk";
                                clocks = <&zynqmp_clk 71>;
                                compatible = "xlnx,fclk";
                        };
                };
        } ;
} ;

If overlaying this device tree immediately after boot, Ultra96-V2 will be reset as follows.

root@debian-fpga:/home/fpga/# mkdir /config/device-tree/overlays/test1
root@debian-fpga:/home/fpga/# dtc -I dts -O dtb -o test1.dtb test1.dts
test1.dtb: Warning (avoid_unnecessary_addr_size): /fragment@1: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property
test1.dtb: Warning (avoid_unnecessary_addr_size): /fragment@1/__overlay__: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property
root@debian-fpga/home/fpga/# cp test1.dtb /config/device-tree/overlays/test1/dtbo
[  283.411110] fpga_manager fpga0: writing qconv_strip_axi.bin to Xilinx ZynqMP FPGA Manager
NOTICE:  ATF running on XCZU3EG/silicon v4/RTL5.1 at 0xfffea000
NOTICE:  BL31: Secure code at 0x0
NOTICE:  BL31: Non secure code at 0x8000000
NOTICE:  BL31: v2.0(release):xilinx-v2019.1-ultra96-1
NOTICE:  BL31: Built : 14:43:47, Jul 22 2019
PMUFW:  v1.1


U-Boot 2019.01 (Jul 21 2019 - 00:29:10 +0900)

Model: Avnet Ultra96 Rev1
Board: Xilinx ZynqMP
DRAM:  2 GiB
EL Level:       EL2
Chip ID:        zu3eg
MMC:   mmc@ff160000: 0, mmc@ff170000: 1
In:    serial@ff010000
Out:   serial@ff010000
Err:   serial@ff010000
Bootmode: SD_MODE
Reset reason:   EXTERNAL
Net:   No ethernet found.
626 bytes read in 8 ms (76.2 KiB/s)
Loaded environment from uEnv.txt
Importing environment from SD ...

This phenomenon is confirmed only with Ultra96-V2. It does not happen with Ultra96.

Do you have instructions on how to support other boards? Would love to know how you are able to create these. Thank you.

Hello Ichiro ,

Do you have instruction for the Avnet UltraZed-EV board?
Do you think your target/UltraZed-EG-IOCC/boot is working for the EV board?

Thanks,
Kiman

I'm using your script to build rootfs, but I got the error :

"qemu: Unsupported syscall: 276"

, when I run

dpkg -i linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga_4.19.0-xlnx-v2019.2-zynqmp-fpga-2_arm64.deb

below is the full log:

dpkg -i linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga_4.19.0-xlnx-v2019.2-zynqmp-fpga-2_arm64.deb
Selecting previously unselected package linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga.
(Reading database ... 26393 files and directories currently installed.)
Preparing to unpack linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga_4.19.0-xlnx-v2019.2-zynqmp-fpga-2_arm64.deb ...
Unpacking linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga (4.19.0-xlnx-v2019.2-zynqmp-fpga-2) ...
Setting up linux-image-4.19.0-xlnx-v2019.2-zynqmp-fpga (4.19.0-xlnx-v2019.2-zynqmp-fpga-2) ...
qemu: Unsupported syscall: 276

I get error not only for my own file, but also for file that I get from your repository with git lfs.
my host environment is Ubuntu 18.04 LTS 64 bits.
Could you please give me any advice, thanks a lot.

Sometimes "NOHZ: local_softirq_pending 08" is displayed on the system console.

[  118.901634] NOHZ: local_softirq_pending 08
[  132.293732] NOHZ: local_softirq_pending 08
[  137.420057] NOHZ: local_softirq_pending 08

Hi :)
i used your files and indication to build new boot files for my ultra96v2 board but i have a problem concerning the WiFi.
The driver is well initialised but it seems that the p2p0 doesn't manage to get linked:

[   84.404171] WILC POWER UP
[   84.406841] wilc_sdio mmc1:0001:1: SDIO speed: 50000000
[   84.412449] wilc_sdio mmc1:0001:1: chipid 003000d0
[   92.909087] NOHZ: local_softirq_pending 08
[   94.647865] NOHZ: local_softirq_pending 08
[   96.388454] NOHZ: local_softirq_pending 08
[   98.129739] NOHZ: local_softirq_pending 08
[  111.033941] NOHZ: local_softirq_pending 08
[  111.982961] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[  112.874685] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[  113.085536] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[  113.382381] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[  113.680385] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[  113.984808] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready

and it goes on like this for a bit, at one point it stops and i tried to do a ifconfig but it stayed stock.
I am trying to connect to the WiFi generated by a raspberry pi…
i wonder if the problem doesn't come from the fact that i can't generate an IP (tried to connect a pc to the WiFi as well and there figured taht no ip was generated)… and each time i tried the command sudo dhclient wlan0, Linux was freezing
As anyone encounter a similar issue?
BR
Sarah