I got stuck to boot from dhcp, nfs/tftp servers:
Here are the configs for the servers:
/etc/exports
/etc/exports: the access control list for filesystems which may be exported
to NFS clients. See exports(5).
Example for NFSv2 and NFSv3:
/srv/homes hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
Example for NFSv4:
/srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
/srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check)
/srv/nfs/rootfs 192.168.10.0/24(no_root_squash,no_subtree_check,rw)
/etc/dhcp/dhcpd.conf
dhcpd.conf
option definitions common to all served networks…
option domain-name “colibri.net”;
option domain-name-servers 127.0.0.53;
default-lease-time 600;
max-lease-time 7200;
Use this to enable / disable dynamic dns updates globally.
ddns-update-style none;
Use this to send dhcp log messages to a different log file (you also
have to hack syslog.conf to complete the redirection).
log-facility local7;
subnet 192.168.10.0 netmask 255.255.255.0 {
default-lease-time 86400;
max-lease-time 86400;
option broadcast-address 192.168.10.255;
option domain-name “colibri.net”;
option domain-name-servers 127.0.0.53;
option ip-forwarding off;
option routers 192.168.10.1;
option subnet-mask 255.255.255.0;
interface enp0s25;
range 192.168.10.32 192.168.10.254;
}
mac address dependent IP assignment, used for the toradex target device
host eval {
filename “Image.gz”;
fixed-address 192.168.10.2;
hardware ethernet 00:14:2d:6f:db:28;
next-server 192.168.10.1;
option host-name “Colibri iMX8X”;
option root-path “rootfs,v4,tcp,clientaddr=0.0.0.0”;
}
dhcpd.conf
Sample configuration file for ISC dhcpd
Attention: If /etc/ltsp/dhcpd.conf exists, that will be used as
configuration file instead of this file.
option definitions common to all supported networks…
#option domain-name “example.org”;
#option domain-name-servers ns1.example.org, ns2.example.org;
#default-lease-time 600;
#max-lease-time 7200;
The ddns-updates-style parameter controls whether or not the server will
attempt to do a DNS update when a lease is confirmed. We default to the
behavior of the version 2 packages (‘none’, since DHCP v2 didn’t
have support for DDNS.)
#ddns-update-style none;
If this DHCP server is the official DHCP server for the local
network, the authoritative directive should be uncommented.
#authoritative;
Use this to send dhcp log messages to a different log file (you also
have to hack syslog.conf to complete the redirection).
#log-facility local7;
No service will be given on this subnet, but declaring it helps the
DHCP server to understand the network topology.
#subnet 10.152.187.0 netmask 255.255.255.0 {
#}
This is a very basic subnet declaration.
#subnet 10.254.239.0 netmask 255.255.255.224 {
range 10.254.239.10 10.254.239.20;
option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#}
This declaration allows BOOTP clients to get dynamic addresses,
which we don’t really recommend.
#subnet 10.254.239.32 netmask 255.255.255.224 {
range dynamic-bootp 10.254.239.40 10.254.239.60;
option broadcast-address 10.254.239.31;
option routers rtr-239-32-1.example.org;
#}
A slightly different configuration for an internal subnet.
#subnet 10.5.5.0 netmask 255.255.255.224 {
range 10.5.5.26 10.5.5.30;
option domain-name-servers ns1.internal.example.org;
option domain-name “internal.example.org”;
option subnet-mask 255.255.255.224;
option routers 10.5.5.1;
option broadcast-address 10.5.5.31;
default-lease-time 600;
max-lease-time 7200;
#}
Hosts which require special configuration options can be listed in
host statements. If no address is specified, the address will be
allocated dynamically (if possible), but the host-specific information
will still come from the host declaration.
#host passacaglia {
hardware ethernet 0:0:c0:5d:bd:95;
filename “vmunix.passacaglia”;
server-name “toccata.example.com”;
#}
Fixed IP addresses can also be specified for hosts. These addresses
should not also be listed as being available for dynamic assignment.
Hosts for which fixed IP addresses have been specified can boot using
BOOTP or DHCP. Hosts for which no fixed address is specified can only
be booted with DHCP, unless there is an address range on the subnet
to which a BOOTP client is connected which has the dynamic-bootp flag
set.
#host fantasia {
hardware ethernet 08:00:07:26:c0:a5;
fixed-address fantasia.example.com;
#}
You can declare a class of clients and then do address allocation
based on that. The example below shows a case where all clients
in a certain class get addresses on the 10.17.224/24 subnet, and all
other clients get addresses on the 10.0.29/24 subnet.
#class “foo” {
match if substring (option vendor-class-identifier, 0, 4) = “SUNW”;
#}
#shared-network 224-29 {
subnet 10.17.224.0 netmask 255.255.255.0 {
option routers rtr-224.example.org;
}
subnet 10.0.29.0 netmask 255.255.255.0 {
option routers rtr-29.example.org;
}
pool {
allow members of “foo”;
range 10.17.224.10 10.17.224.250;
}
pool {
deny members of “foo”;
range 10.0.29.10 10.0.29.230;
}
#}
/etc/default/tftpd-hpa
/etc/default/tftpd-hpa
TFTP_USERNAME=“tftp”
TFTP_DIRECTORY=“/srv/tftp”
TFTP_ADDRESS=“0.0.0.0:69”
TFTP_OPTIONS=“–secure”
u-boot env:
setenv ipaddr 192.168.10.2 # IP address of your Colibri module
setenv serverip 192.168.10.1 # IP address of your NFS server
setenv netmask 255.255.255.0 # Network mask
setenv nfsroot /srv/nfs # NFS server export path
setenv bootargs ‘root=/dev/nfs rw nfsroot=192.168.10.1:/srv/nfs/rootfs,v4,tcp,clientaddr=0.0.0.0 ip=192.168.10.2:192.168.10.1:192.168.10.1:255.255.255.0:toradex::off’
saveenv
run bootcmd_dhcp
Kernel message:
starting USB…
Bus usb@5b0d0000: USB EHCI 1.00
Bus usbh3: XHCI-imx8 init hccr 0x000000005b130000 and hcor 0x000000005b130080 hc_length 128
Register 2000820 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus usb@5b0d0000 for devices… 1 USB Device(s) found
scanning bus usbh3 for devices… 2 USB Device(s) found
scanning usb for storage devices… 0 Storage Device(s) found
BOOTP broadcast 1
DHCP client bound to address 192.168.10.2 (2 ms)
Using ethernet@5b040000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.2
Filename ‘boot.scr’.
Load address: 0x9d480000
Loading: ################################################## 5.9 KiB
533.2 KiB/s
done
Bytes transferred = 6010 (177a hex)
Executing script at 9d480000
Loading DeviceTree: imx8qxp-colibri-eval-v3.dtb
BOOTP broadcast 1
DHCP client bound to address 192.168.10.2 (2 ms)
Using ethernet@5b040000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.2
Filename ‘imx8qxp-colibri-eval-v3.dtb’.
Load address: 0x9d400000
Loading: ################################################## 119.3 KiB
4.7 MiB/s
done
Bytes transferred = 122166 (1dd36 hex)
BOOTP broadcast 1
DHCP client bound to address 192.168.10.2 (2 ms)
Using ethernet@5b040000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.2
Filename ‘overlays.txt’.
Load address: 0x95c00000
Loading: ################################################## 52 Bytes
5.9 KiB/s
done
Bytes transferred = 52 (34 hex)
Applying Overlay: colibri-imx8x_vga-640x480_overlay.dtbo
BOOTP broadcast 1
DHCP client bound to address 192.168.10.2 (2 ms)
Using ethernet@5b040000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.2
Filename ‘overlays/colibri-imx8x_vga-640x480_overlay.dtbo’.
Load address: 0x95c00000
Loading: ################################################## 2 KiB
251 KiB/s
done
Bytes transferred = 2062 (80e hex)
BOOTP broadcast 1
DHCP client bound to address 192.168.10.2 (2 ms)
Using ethernet@5b040000 device
TFTP from server 192.168.10.1; our IP address is 192.168.10.2
Filename ‘Image.gz’.
Load address: 0x95c00000
Loading: ################################################## 11.1 MiB
6.6 MiB/s
done
Bytes transferred = 11675339 (b226cb hex)
Bootargs: quiet root=/dev/nfs ip=dhcp console=tty1 console=ttyLP3,115200 consoleblank=0 earlycon
Uncompressing Kernel Image
Flattened Device Tree blob at 9d400000
Booting using the fdt blob at 0x9d400000
Loading Device Tree to 00000000fd62a000, end 00000000fd66afff … OK
Starting kernel …
[ 0.851200] debugfs: Directory ‘lvds1’ with parent ‘pm_genpd’ already present!
[ 0.859171] debugfs: Directory ‘mipi1-i2c1’ with parent ‘pm_genpd’ already present!
[ 0.866988] debugfs: Directory ‘mipi1-i2c0’ with parent ‘pm_genpd’ already present!
[ 0.874765] debugfs: Directory ‘mipi1-pwm0’ with parent ‘pm_genpd’ already present!
[ 0.882555] debugfs: Directory ‘mipi1’ with parent ‘pm_genpd’ already present!
[ 101.373318] VFS: Unable to mount root fs via NFS.
[ 101.405571] Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance.
[ 101.419958] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.15.148-6.7.0-devel+git.bfdbfb2c85fb #1
[ 101.428692] Hardware name: Toradex Colibri iMX8QXP on Colibri Evaluation Board V3 (DT)
[ 101.436712] Call trace:
[ 101.439190] dump_backtrace+0x0/0x1f0
[ 101.442915] show_stack+0x18/0x40
[ 101.446280] dump_stack_lvl+0x68/0x84
[ 101.449994] dump_stack+0x18/0x34
[ 101.453361] panic+0x18c/0x34c
[ 101.456459] kernel_init+0x120/0x12c
[ 101.460088] ret_from_fork+0x10/0x20
[ 101.463722] SMP: stopping secondary CPUs
[ 101.467699] Kernel Offset: disabled
[ 101.471233] CPU features: 0x0,00000001,20000846
[ 101.475823] Memory Limit: none
[ 101.480599] —[ end Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance. ]—
