mru...@silveredge-gs.com wrote:
> Hi Martin,
>
> > Be advised that bad configurations of kernel and/or FPGA (or device tree\
> > info) can lead to boot loops which are pretty annoying to auto-fix.
> >
> > \--M
>
> \:-) You caught me daydreaming about automating the tedious debug I’m about
> to start. :-)
Hello,
Regarding kernel versions (5.15 vs 5.10) I messed that. At the time newest
linux-xlnx was 5.15 and USRP X410 used 5.10.
I did my bisecting by starting from xlnx_rebase_v5.10 branch, finding the
common commit of NI’s kernel and linux-xlnx (2c85ebc57b3e) and some working
commit (top of xlnx_rebase_v5.10 branch). It looked like this:\
cd kernel_souces/linux-xlnx/
git bisect reset\
git checkout xlnx_rebase_v5.10\
git bisect start\
git bisect bad\
git bisect good 2c85ebc57b3e\
git bisect run check_not_working
I’m attaching the scripts used for bisecting in case anyone is interested. They
were written ad hoc and not meant to be used by anyone else than me. I.e. ‘git
bisect good 2c85ebc57b3e’ means a commit for which ZCU111 failed to boot, so
actually opposite of good. But I’m posting them in case anyone finds them
helpful. Boot loops were not a problem as the failure to boot was confirmed
based on exceeding a timeout.
Regarding the description how to boot X410 over the network - I have written it
below, but keep in mind that I didn’t go through all of the steps before
writing them down. So most probably I have missed something. When (or if) I’ll
have a well tested description, I’ll put it on some webpage and post a link
here.
It goes like this (for Ubuntu 20.04):
Install nfs and tftp servers + docker:\
sudo apt install nfs-kernel-server tftpd-hpa isc-dhcp-server docker.io
Configure nfs server by putting this in /etc/exports:\
/nfsroot \*(rw,sync,no_root_squash)\
sudo systemctl restart nfs-server
Configure DHCP server. In file /etc/dhcp/dhcpd.conf you need to check if you
have something like this for subnet 192.168.0.0:\
subnet 192.168.0.0 netmask 255.255.255.0 {\
range 192.168.0.20 192.168.0.120;\
option subnet-mask 255.255.255.0;\
option routers 192.168.0.1;\
}
Then restart DHCP server:\
sudo systemctl restart isc-dhcp-server
If you need to have constant IP in the USRP add something like to
/etc/dhcp/dhcpd.conf:\
host x410 {\
hardware ethernet 00:80:2f:31:11:0c;\
fixed-address 192.168.0.15;\
option subnet-mask 255.255.255.0;\
option broadcast-address 192.168.0.255;\
option routers 192.168.0.1;\
}\
(replace 00:80:2f:31:11:0c with your USRP’s 1Gb ethernet interface MAC address).
Prepare kernel+bootloaders and rootfs. All of these things are in SD card
images provided by NI/Ettus (can be mounted with i.e. kpartx), but I wasn’t
able to boot the board over network with use of the kernel provided there. So
I’m building whole image myself from meta-ettus repo like this (will take a
while):
git clone https://github.com/EttusResearch/meta-ettus\
docker run --rm -it -w "$PWD" --mount type=bind,source="$PWD",target="$PWD" \\\
--net=host \\\
--env "USER_ID=$(id -u)" \\\
--env "GROUP_ID=$(id -g)" \\\
ghcr.io/siemens/kas/kas:2.6.2 \\\
bash -c "sudo apt update ; sudo apt install -y zip &&
./meta-ettus/contrib/kas_build_imgs_package.sh x4xx v4.7.0.0"
Unzip bootloaders to /tftpboot:\
sudo unzip
build/tmp-glibc/deploy/images/ni-titanium-rev5-mender/u-boot-jtag-files.zip -d
/tftpboot
Copy kernel image to /tftpboot:\
sudo cp build/tmp-glibc/deploy/images/ni-titanium-rev5-mender/fitImage /tftpboot
Unpack the rootfs to directory exposed by nfs server:\
mkdir rootfs_mount_dir\
sudo mount
build/tmp-glibc/deploy/images/ni-titanium-rev5-mender/gnuradio-image-ni-titanium-rev5-mender-20241005135100.ext4
rootfs_mount_dir -o loop\
sudo mkdir /nfsroot/x410\
sudo cp -rp rootfs_mount_dir/\* /nfsroot/x410
\
Configure pxelinux to mount rootfs over NFS:\
mkdir /tftpboot/x410/pxelinux.cfg\
touch /tftpboot/x410/pxelinux.cfg/default
edit file ‘/tftpboot/x410/pxelinux.cfg/default’ and put inside following
content (this was taken from Petalinux and edited to mount rootfs from NFS and
to have UIO name good for USRP X410):\
LABEL Linux\
KERNEL fitImage\
APPEND earlycon console=ttyPS0,115200 root=/dev/nfs
nfsroot=192.168.0.1:/nfsroot/x410,v3,tcp uio_pdrv_genirq.of_id=usrp-uio
at24.io_limit=64 rootwait clk_ignore_unused ip=dhcp rw
You need to connect 1Gb Ethernet and JTAG USB port of your X410 to the PC. I
assume that the PC’s address on the Ethernet interface connected to X410 is
192.168.0.1 (otherwise change the address in
/tftpboot/x410/pxelinux.cfg/default).
Booting:\
Rreset the USRP. You can do it over USRP’s microcontroller UART:\
\
stm_uart=$(ls /dev/serial/by-id/usb-Digilent_Digilent_USB_Device_\*-if02-port0
| head -n 1)\
echo reboot > "$stm_uart"\
sleep 0.5\
echo zynqmp bootmode jtag > "$stm_uart"\
sleep 0.5\
echo powerbtn > "$stm_uart"\
\
Then boot the USRP:\
cd /tftpboot\
source /tools/Xilinx/Vivado/2021.1/settings64.sh\
\#any other Vivado installation should do, it is only needed for xsdb program
that sends bootloaders to ARM’s memory over JTAG\
xsdb "boot_u-boot.tcl"
For ZCU111 I did write some u-boot configuration for jtagboot. On X410 the code
is not modified to make the netboot easier. You’ll need to connect over UART to
the X410:\
zynq_uart=$(ls /dev/serial/by-id/usb-Digilent_Digilent_USB_Device_\*-if03-port0
| head -n 1)\
picocom -b 115200 “$zynq_uart”
So when you’ll see some text written by u-boot type ‘noautoboot‘ to go to
u-boot prompt. Then do:\
setenv jtagboot 'run netboot'\
setenv nfsroot '/nfsroot/x410’\
setenv tftproot ''\
saveenv\
\
Reset the USRP and boot over JTAG again. Now is a tricky part that I didn’t
solve completely for X410 (and for ZCU111 it works well). If everything to this
step will go well u-boot will start to look for files in some strange
directories in /tftpboot directory. What I did was putting those files there
after seeing that u-boot looks for them. At the moment I don’t have a better
solution than to show how it looks on my side. So here is content of my
/tftpboot (actually I put files for different boards in subdirectories of
/tftpboot, but here in order to not complicate this description even more I
didn’t add that):\
https://ln5.sync.com/dl/1ceadcae0/98ggqg92-7d8mv5cq-txweneu5-pdaqzx26/view/default/14313095050001
Best Regards,\
Piotr Krysik
#!/bin/bash
source /opt/oecore-sdk/environment-setup-aarch64-oe-linux
cd kernel_sources/linux-xlnx
cp config_base .config
yes "" | make oldconfig
make -j 64
if [ $? -ne 0 ]; then
echo "Failed build - ignoring commit"
exit 125;
fi
cp kernel_sources/linux-xlnx/arch/arm64/boot/Image /tftpboot/xlnx2
source /opt/Xilinx/Vivado/2019.1/settings64.sh
boot_rfsoc_linux
check_boot_log.py
exit $?
#!/usr/bin/python3
from argparse import ArgumentParser
import serial
import re
import sys
def parse_args():
parser = ArgumentParser(prog="")
normal_group = parser.add_argument_group("")
normal_group.add_argument(
"-p",
"--serial-port",
dest="serial_port",
type=str,
default="/dev/ttyUSB1",
help="Set serial port (default %(default)s)")
normal_group.add_argument(
"-f",
"--file-name",
dest="file_name",
type=str,
default="boot.log",
help="Log file name (default %(default)s)")
return parser.parse_args()
if __name__ == "__main__":
args = parse_args()
ending = "ni-x4xx login:"
port = serial.Serial(port=args.serial_port, baudrate=115200, timeout=40)
result_txt = port.read_until(
ending.encode()).decode('utf-8')
print(result_txt)
if ending in result_txt:
print("Booted")
sys.exit(10)
else:
print("Failed boot")
sys.exit(0)
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