Latest revision as of 16:28, 24 April 2025

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DART-6UL - Yocto Setup TFTP/NFS

Running Yocto rootfs on Variscite board using TFTP & NFS

On the Host

Prepare the rootfs folder:

$ cd ~/var-fslc-yocto
$ sudo mkdir rootfs
$ cd rootfs
$ sudo tar xvf ../build_x11//images/imx6ul-var-dart/fsl-image-gui-imx6ul-var-dart.tar.gz

Make sure the NFS server is installed:

$ sudo apt-get install nfs-kernel-server

Edit /etc/exports. E.g.

$ sudo nano /etc/exports

...and add the following line to it (replace <uname> with the actual username):

/home/<uname>/var-fslc-yocto/rootfs    *(rw,sync,no_root_squash,no_all_squash,no_subtree_check)

Restart the NFS server:

$ sudo /etc/init.d/nfs-kernel-server restart

Make sure the TFTP server is installed:

# Ubuntu 24.04 and newer
$ sudo apt-get install xinetd tftpd-hpa tftp-hpa

# Ubuntu 22.04 and older
$ sudo apt-get install xinetd tftpd tftp

Configure tftpd-hpa for Ubuntu 24.04 and newer:

$ sudo nano /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/tftpboot"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="--secure"

Configure tftpd for Ubuntu 22.04 and older:

$ ls /usr/sbin/in.tftpd
$ sudo nano /etc/xinetd.d/tftp
service tftp
{
	protocol = udp
	port = 69
	socket_type = dgram
	wait = yes
	user = nobody
	server = /usr/sbin/in.tftpd
	server_args = /tftpboot
	disable = no
}

and run:

$ sudo mkdir /tftpboot
$ sudo chmod -R 777 /tftpboot
$ sudo systemctl restart xinetd
$ sudo systemctl restart tftpd-hpa

$ cd ~/var-fslc-yocto/build_x11/
$ sudo cp /images/imx6ul-var-dart/zImage /tftpboot
$ for f in /images/imx6ul-var-dart/*.dtb; do if [[ -L $f ]] && [[ $f != *imx6ul-var-dart.dtb ]]; then sudo cp $f /tftpboot; fi done
$ sudo rename 's/zImage-//' /tftpboot/zImage-*.dtb

Make adjustments to the rootfs:

When using NetworkManager on the target, configure NetworkManager not to manage the interface used for the NFS boot by adding the following to /home/<uname>/var-fslc-yocto/rootfs/etc/NetworkManager/NetworkManager.conf:

[keyfile]
unmanaged-devices=interface-name:eth0

Enable DNS:

$ sudo ln -fs /proc/net/pnp /home/<uname>/var-fslc-yocto/rootfs/etc/resolv.conf

On the Target

You are all set. Connect the target board to the same network as the host using an Ethernet cable, power cycle it and it should boot over NFS.

@@ Line 31: / Line 31: @@
 -->{{#ifeq: {{#var:SOC_SERIES}} | imx8 ||{{#vardefine:SHOW_CONFIG_FEC|0}}}}<!--                                                                              if SOC_SERIES != mx8, SHOW_CONFIG_FEC = 0 -->
 = Running Yocto rootfs on Variscite board using TFTP &amp; NFS  =
+{{#ifexist: {{#var:ROOTFS_COMP_TARBALL_EXT}} ||
+ {{#ifeq: {{KERNEL_VERSION_NEWER|{{#var:KERNEL_VER}}|6.6.23}} | true |
+  {{#vardefine:ROOTFS_COMP_TARBALL_EXT|rootfs.tar.zst}} <!-- Releases starting from Scarthgap (6.6.23) -->
+ |
+  {{#ifeq: {{KERNEL_VERSION_NEWER|{{#var:KERNEL_VER}}|6.1.22}} | true |
+   {{#vardefine:ROOTFS_COMP_TARBALL_EXT|tar.zst}}       <!-- Releases starting from Mickledore (6.1.22) -->
+   |
+   {{#vardefine:ROOTFS_COMP_TARBALL_EXT|tar.gz}}        <!-- Older than the statements above -->
+  }}
+ }}
+}}
 == On the Host  ==
 {{#vardefine:decompressionCommand|
 {{#switch: {{#var:RECOVERY_SD_NAME_COMP}}
-  | zst=sudo zstd -d ../{{#var:BUILD_FOLDER_DISTRO}}/{{#var:TMPDIR}}/deploy/images/{{#var:MACHINE_NAME}}/{{#var:DEFAULT_IMAGE_BB_NAME}}-{{#var:MACHINE_NAME}}.tar.zst --stdout {{!}} sudo tar xvf -
+  | zst=sudo tar --zstd -xvf ../{{#var:BUILD_FOLDER_DISTRO}}/{{#var:DEPLOY_DIR}}/images/{{#var:MACHINE_NAME}}/{{#var:DEFAULT_IMAGE_BB_NAME}}-{{#var:MACHINE_NAME}}.{{#var:ROOTFS_COMP_TARBALL_EXT}}
-  | #default=sudo tar xvf ../{{#var:BUILD_FOLDER_DISTRO}}/{{#var:TMPDIR}}/deploy/images/{{#var:MACHINE_NAME}}/{{#var:DEFAULT_IMAGE_BB_NAME}}-{{#var:MACHINE_NAME}}.tar.{{#var:RECOVERY_SD_NAME_COMP|gz}}
+  | #default=sudo tar xvf ../{{#var:BUILD_FOLDER_DISTRO}}/{{#var:DEPLOY_DIR}}/images/{{#var:MACHINE_NAME}}/{{#var:DEFAULT_IMAGE_BB_NAME}}-{{#var:MACHINE_NAME}}.tar.{{#var:RECOVERY_SD_NAME_COMP|gz}}
 }}
 }}
@@ Line 66: / Line 78: @@
   $ sudo apt-get install xinetd tftpd tftp
-Verify the following:
+Configure tftpd-hpa for '''Ubuntu 24.04''' and newer:
+ $ sudo nano /etc/default/tftpd-hpa
+ TFTP_USERNAME="tftp"
+ TFTP_DIRECTORY="/tftpboot"
+ TFTP_ADDRESS=":69"
+ TFTP_OPTIONS="--secure"
+Configure tftpd for '''Ubuntu 22.04''' and older:
   $ ls /usr/sbin/in.tftpd
   $ sudo nano /etc/xinetd.d/tftp
@@ Line 80: / Line 99: @@
   	disable = no
   }
 and run:
   $ sudo mkdir /tftpboot
   $ sudo chmod -R 777 /tftpboot
-  $ sudo /etc/init.d/xinetd restart
+  $ sudo systemctl restart xinetd
+ $ sudo systemctl restart tftpd-hpa
 {{#ifeq: {{#var:SOC_SERIES}} | imx8 |
 <br>
@@ Line 91: / Line 112: @@
 <br>
   $ cd {{#var:BUILD_FOLDER}}/{{#var:BUILD_FOLDER_DISTRO}}/
-  $ sudo cp {{#var:TMPDIR}}/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}} /tftpboot
+  $ sudo cp {{#var:DEPLOY_DIR}}/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}} /tftpboot
-  $ for f in {{#var:TMPDIR}}/deploy/images/{{#var:MACHINE_NAME}}/*.dtb; do if <nowiki>[[ -L $f ]] && [[</nowiki> $f != *{{#var:MACHINE_NAME}}.dtb <nowiki>]]</nowiki>; then sudo cp $f /tftpboot; fi done
+  $ for f in {{#var:DEPLOY_DIR}}/images/{{#var:MACHINE_NAME}}/*.dtb; do if <nowiki>[[ -L $f ]] && [[</nowiki> $f != *{{#var:MACHINE_NAME}}.dtb <nowiki>]]</nowiki>; then sudo cp $f /tftpboot; fi done
   $ sudo rename 's/{{#var:KERNEL_IMAGE}}-//' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb
 }}
@@ Line 117: / Line 138: @@
 == On the Target  ==
-{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-AM62 |
+{{#switch: {{#var:HARDWARE_NAME}}
+|VAR-SOM-AM62
+|VAR-SOM-AM62P=
 Update the U-Boot enviroment by adding the following lines to the uEnv.txt file on the SD card/eMMC boot partition:
 <pre>

Yocto Setup TFTP/NFS: Difference between revisions

Latest revision as of 16:28, 24 April 2025

Contents

Running Yocto rootfs on Variscite board using TFTP & NFS

On the Host

On the Target