Yocto Build Linux: Difference between revisions
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<!-- Set release according to "release" parameter in URL and use | <!-- Set release according to "release" parameter in URL and use RELEASE_MORTY_V1.0_DART-6UL as default | ||
--> {{# | --> {{INIT_RELEASE_PARAM|RELEASE_MORTY_V1.0_DART-6UL}}<!-- | ||
--> {{#lst: | --> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | ||
--> {{PageHeader| | --> {{#lst:B2QT_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | ||
--> {{#lst:Debian_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | |||
--> {{#vardefine:PLATFORM_OS|Yocto}} <!-- | |||
--> {{#vardefine:WORKDIR|~/{{#var:MACHINE_NAME}}-linux}} <!-- | |||
--> {{#vardefine:WORKDIR_ENV|$WORKDIR}} | |||
{{#vardefine:CUSTOMIZE_LINUX_KERNEL|Yocto Customizing the Linux kernel}} <!-- Default to Yocto | |||
--> {{#varexists:DEBIAN_NAME | | |||
{{#vardefine:PLATFORM_OS|Debian}} }} <!-- | |||
--> {{PageHeader|Build Linux from source code}} {{DocImage|category1=Yocto|category2=Debian}} <!-- | |||
--> [[category:{{#var:HARDWARE_NAME}}]] __toc__ | |||
{{note|It is recommended to build the kernel image using Yocto (see the {{Varlink|{{#var:CUSTOMIZE_LINUX_KERNEL}}|{{#var:RELEASE_LINK}}|Customizing the Linux kernel}} page) instead of using the direct method described in this page.<br> | |||
This is because some of the Yocto packages may depend on the kernel, like the WiFi module that is built from outside of the kernel source tree on some of the {{#var:PLATFORM_OS}} releases.}} | |||
= Toolchain installation for out of Yocto builds = | = Toolchain installation for out of Yocto builds = | ||
To install the toolchain, follow the {{Varlink2|Yocto Toolchain installation|{{#var:RELEASE_LINK}}}} guide. | |||
= Setup the environment: = | |||
Setup a working directory | |||
$ export WORKDIR={{#var:WORKDIR}} | |||
$ mkdir ${WORKDIR} | |||
= Build Linux out of Yocto tree = | = Build Linux out of Yocto tree = | ||
== Fetch {{#var:KERNEL_REPO_NAME}} source code: == | |||
{{GIT_FETCH|NAME=KERNEL|WORKDIR={{#var:WORKDIR_ENV}}|USE_BRANCH=y}} | |||
== Build Kernel, Modules, and DTBs: == | |||
Setup the environment: | |||
$ source {{#var:TOOLCHAIN_LOCATION}} | $ source {{#var:TOOLCHAIN_LOCATION}}{{#switch: {{#var:SOC_SERIES}}|imx8|mx93=<br>$ unset LDFLAGS|}} | ||
Clean and prepare the kernel: | |||
$ cd ${WORKDIR}/{{#var:KERNEL_REPO_NAME}} | |||
$ make mrproper | $ make mrproper | ||
$ make {{#var:KERNEL_DEFCONFIG}} | $ make {{#var:KERNEL_DEFCONFIG}} | ||
Customize the kernel configuration (optional step): | |||
$ make menuconfig | |||
Build kernel parts: | |||
Build everything: | Build everything: | ||
$ make - | $ make -j$(nproc) | ||
Build {{#var:KERNEL_IMAGE}} only: | Build {{#var:KERNEL_IMAGE}} only: | ||
$ make - | $ make -j$(nproc) {{#var:KERNEL_BUILD_PARAMS}} {{#var:KERNEL_IMAGE}} | ||
Build modules only: | Build modules only: | ||
$ make - | $ make -j$(nproc) {{#var:KERNEL_BUILD_PARAMS}} modules | ||
Build device trees only: | Build device trees only: | ||
$ make - | $ make -j$(nproc) dtbs | ||
<!-- Attach DTB section from specific release--> | <!-- Attach DTB section from specific release--> | ||
{{#lst:Yocto_Platform_Customization|{{#var:KERNEL_DTB_SECTION}}}} | {{#lst:Yocto_Platform_Customization|{{#var:KERNEL_DTB_SECTION}}}} | ||
== Install kernel modules to temporary directory == | |||
{{#vardefine:KERNEL_ROOTFS|{{#var:WORKDIR_ENV}}/rootfs}} | |||
{{#vardefine:KERNEL_ARCH|{{#switch:{{#var:HARDWARE_NAME}} | |||
|DART-6UL | |||
|VAR-SOM-MX7 | |||
|VAR-SOM-MX6=arm | |||
|#default=arm64 | |||
}}}} | |||
Create a temporary directory to install the modules: | |||
Optional: delete any old installation from previous builds: | |||
$ rm -rf {{#var:KERNEL_ROOTFS}} | |||
Create new directory: | |||
$ mkdir -p {{#var:KERNEL_ROOTFS}} | |||
Install the modules to the temporary rootfs: | |||
$ cd ${WORKDIR}/{{#var:KERNEL_REPO_NAME}} && \ | |||
make ARCH={{#var:KERNEL_ARCH}} \ | |||
INSTALL_MOD_STRIP=1 \ | |||
INSTALL_MOD_PATH={{#var:KERNEL_ROOTFS}} \ | |||
modules_install | |||
{{#ifeq: {{#var:WIFI_IW612_SUPPORT}}|yes| | |||
= Build external modules = | |||
== Build and install iw61x wifi driver support to temporary rootfs == | |||
External kernel modules must be compiled against the exact kernel version (commit ID) that is deployed on the target. Follow the steps below to compile and install the mandatory external drivers for the {{#var:MACHINE_NAME}}. | |||
'''NXP Wi-Fi linux Driver''' | |||
Follow the steps below to compile and install the driver for the NXP iw61x chipset. | |||
Fetch the driver: | |||
{{GIT_FETCH|NAME=NXP_WLAN_SDK|WORKDIR={{#var:WORKDIR_ENV}}|USE_COMMIT=y}} | |||
Build the driver: | |||
$ cd ${WORKDIR}/{{#var:NXP_WLAN_SDK_MAKE_DIR}} && | |||
make -j$(nproc) KERNELDIR={{#var:WORKDIR_ENV}}/{{#var:KERNEL_REPO_NAME}} | |||
Install the driver to the temporary modules directory: | |||
$ make -j$(nproc) \ | |||
KERNELDIR=${WORKDIR}/{{#var:KERNEL_REPO_NAME}} \ | |||
-C ${WORKDIR}/{{#var:KERNEL_REPO_NAME}} \ | |||
M=${WORKDIR}/{{#var:NXP_WLAN_SDK_MAKE_DIR}} \ | |||
INSTALL_MOD_PATH=${WORKDIR}/rootfs \ | |||
INSTALL_MOD_STRIP=1 \ | |||
modules_install | |||
}} | |||
Notes:<br> | Notes:<br> | ||
{{note|If you replace the kernel image ({{#var:KERNEL_IMAGE}}) on your system, you also need to reinstall the kernel modules, and vice versa.}} | |||
{{note|If you just want to make a change in the device tree, you can compile and replace it without replacing the kernel image and modules.}} | |||
= Install the built kernel on an SD card = | = Install the built kernel images, modules, and device trees on an SD card = | ||
Copy the {{#var:KERNEL_IMAGE}} and device trees to the SD card boot partition, and install the modules in the SD card rootfs partition.<br> | Copy the {{#var:KERNEL_IMAGE}} and device trees to the SD card boot partition, and install the modules in the SD card rootfs partition.<br> | ||
Assuming the boot partition is mounted on /media/ | Assuming the {{#switch: {{#var:SOC_SERIES}}|imx8|imx9=|boot partition is mounted on /media/user/{{#var:EMMC_FAT_PARTITION_NAME}} and the }}rootfs partition is mounted on /media/user/rootfs: | ||
{{#switch: {{#var:SOC_SERIES}}|imx8|imx9= | |||
<br> | |||
Install the kernel image and modules: | |||
$ cd ${WORKDIR}/{{#var:KERNEL_REPO_NAME}} | |||
$ kver=$(strings arch/arm64/boot/Image <nowiki>|</nowiki> grep -i "Linux version" <nowiki>|</nowiki> awk '{print $3}') | |||
$ sudo cp arch/arm64/boot/{{#var:KERNEL_IMAGE}} /media/user/rootfs/boot/{{#var:KERNEL_IMAGE}}-${kver} | |||
$ sudo ln -fs /boot/{{#var:KERNEL_IMAGE}}-${kver} /media/user/rootfs/boot/{{#var:KERNEL_IMAGE}} | |||
$ sudo cp {{#var:KERNEL_ROOTFS}}/* /media/user/rootfs | |||
Install the device trees: | |||
{{#ifeq: {{#var:YOCTO_NAME}}|Morty|$ for dtb in arch/arm64/boot/dts/variscite/*.dtb; do sudo cp $dtb /media/user/rootfs/boot/devicetree-Image.gz-$(basename $dtb); done | $ sudo cp arch/arm64/boot/dts/freescale/*imx*var*.dtb /media/user/rootfs/boot/}} | |||
|= | |||
<br> | |||
Install the kernel image and modules: | |||
$ cd ${WORKDIR}/{{#var:KERNEL_REPO_NAME}} | |||
$ cp arch/arm/boot/{{#var:KERNEL_IMAGE}} /media/user/{{#var:EMMC_FAT_PARTITION_NAME}} | |||
$ sudo cp {{#var:KERNEL_ROOTFS}}/* /media/user/rootfs | |||
Install the device trees: | |||
{{#switch: {{#var:HARDWARE_NAME}} | |||
|DART-6UL=$ sudo cp arch/arm/boot/dts/imx6ul*var*.dtb /media/user/{{#var:EMMC_FAT_PARTITION_NAME}} | |||
|VAR-SOM-MX7=$ sudo cp arch/arm/boot/dts/imx7*var*.dtb /media/user/{{#var:EMMC_FAT_PARTITION_NAME}} | |||
|VAR-SOM-MX6=$ sudo cp arch/arm/boot/dts/{imx6q*var*.dtb,imx6dl*var*.dtb} /media/user/{{#var:EMMC_FAT_PARTITION_NAME}} | |||
}} | |||
Notes:<br> | |||
* If you are using our {{Varlink2|{{#var:PLATFORM_OS}} Recovery SD card|{{#var:RELEASE_LINK}}}}, and you want the NAND flash/eMMC installation process to be updated as well as the SD card boot itself, you need to also update the /opt/images/{{#var:PLATFORM_OS}} directory. | |||
* You should always properly unmount your SD card before physically removing it. | |||
}} | |||
{{#switch: {{#var:SOC_SERIES}} | |||
|imx8 | |||
|imx9= | |||
= Install the built kernel images, modules, and device trees using SSH on a running target = | |||
The example below uses ssh to install the kernel on a running device. | |||
First, export a variable with the ip address of your target device: | |||
$ | $ export TARGET_IP=192.168.0.205 | ||
Then, copy the kernel image and device trees to the temporary directory, send them to the target using ssh, and install them with the correct user permissions: | |||
$ mkdir -p {{#var:KERNEL_ROOTFS}}/boot && \ | |||
cp ${WORKDIR}/{{#var:KERNEL_REPO_NAME}}/arch/arm64/boot/dts/freescale/*imx*var*.dtb {{#var:KERNEL_ROOTFS}}/boot && \ | |||
cp ${WORKDIR}/{{#var:KERNEL_REPO_NAME}}/arch/arm64/boot/{{#var:KERNEL_IMAGE}} {{#var:KERNEL_ROOTFS}}/boot/ && \ | |||
ssh root@${TARGET_IP} 'mkdir /tmp/rootfs' && \ | |||
tar czf - -C {{#var:KERNEL_ROOTFS}} . {{!}} ssh root@${TARGET_IP} 'tar xzf - -C /tmp/rootfs && chown -R root:root /tmp/rootfs && cp -a /tmp/rootfs/* / && rm -r /tmp/rootfs' | |||
}} |
Latest revision as of 08:49, 26 July 2024
This page is using the default release RELEASE_MORTY_V1.0_DART-6UL.
To view this page for a specific Variscite SoM and software release, please follow these steps:
- Visit variwiki.com
- Select your SoM
- Select the software release
This is because some of the Yocto packages may depend on the kernel, like the WiFi module that is built from outside of the kernel source tree on some of the Yocto releases.
Toolchain installation for out of Yocto builds
To install the toolchain, follow the Yocto Toolchain installation guide.
Setup the environment:
Setup a working directory
$ export WORKDIR=~/imx6ul-var-dart-linux $ mkdir ${WORKDIR}
Build Linux out of Yocto tree
Fetch linux-2.6-imx source code:
$ cd $WORKDIR $ git clone https://github.com/varigit/linux-2.6-imx.git -b imx-rel_imx_4.1.15_2.0.0_ga-var02 linux-2.6-imx $ cd linux-2.6-imx && \ git checkout imx-rel_imx_4.1.15_2.0.0_ga-var02 && \ cd ../
Build Kernel, Modules, and DTBs:
Setup the environment:
$ source /opt/fslc-x11/2.2.1/environment-setup-armv7at2hf-neon-fslc-linux-gnueabi
Clean and prepare the kernel:
$ cd ${WORKDIR}/linux-2.6-imx $ make mrproper $ make imx6ul-var-dart_defconfig
Customize the kernel configuration (optional step): $ make menuconfig
Build kernel parts:
Build everything: $ make -j$(nproc) Build zImage only: $ make -j$(nproc) zImage Build modules only: $ make -j$(nproc) modules Build device trees only: $ make -j$(nproc) dtbs
Build only the device tree for DART-6UL with i.MX6UL SOC, eMMC and WiFi: $ make -j4 imx6ul-var-dart-emmc_wifi.dtb Build only the device tree for DART-6UL with i.MX6UL SOC, eMMC and SD card: $ make -j4 imx6ul-var-dart-sd_emmc.dtb Build only the device tree for DART-6UL with i.MX6UL SOC, NAND flash and WiFi: $ make -j4 imx6ul-var-dart-nand_wifi.dtb Build only the device tree for DART-6UL with i.MX6UL SOC, NAND flash and SD card: $ make -j4 imx6ul-var-dart-sd_nand.dtb Build only the device tree for DART-6UL with i.MX6ULL SOC, eMMC and WiFi: $ make -j4 imx6ull-var-dart-emmc_wifi.dtb Build only the device tree for DART-6UL with i.MX6ULL SOC, eMMC and SD card: $ make -j4 imx6ull-var-dart-sd_emmc.dtb Build only the device tree for DART-6UL with i.MX6ULL SOC, NAND flash and WiFi: $ make -j4 imx6ull-var-dart-nand_wifi.dtb Build only the device tree for DART-6UL with i.MX6ULL SOC, NAND flash and SD card: $ make -j4 imx6ull-var-dart-sd_nand.dtb
Install kernel modules to temporary directory
Create a temporary directory to install the modules:
Optional: delete any old installation from previous builds: $ rm -rf $WORKDIR/rootfs Create new directory: $ mkdir -p $WORKDIR/rootfs
Install the modules to the temporary rootfs:
$ cd ${WORKDIR}/linux-2.6-imx && \ make ARCH=arm \ INSTALL_MOD_STRIP=1 \ INSTALL_MOD_PATH=$WORKDIR/rootfs \ modules_install
Notes:
Install the built kernel images, modules, and device trees on an SD card
Copy the zImage and device trees to the SD card boot partition, and install the modules in the SD card rootfs partition.
Assuming the boot partition is mounted on /media/user/BOOT-VAR6UL and the rootfs partition is mounted on /media/user/rootfs:
Install the kernel image and modules: $ cd ${WORKDIR}/linux-2.6-imx $ cp arch/arm/boot/zImage /media/user/BOOT-VAR6UL $ sudo cp $WORKDIR/rootfs/* /media/user/rootfs Install the device trees: $ sudo cp arch/arm/boot/dts/imx6ul*var*.dtb /media/user/BOOT-VAR6UL
Notes:
- If you are using our Yocto Recovery SD card, and you want the NAND flash/eMMC installation process to be updated as well as the SD card boot itself, you need to also update the /opt/images/Yocto directory.
- You should always properly unmount your SD card before physically removing it.