Android Customizing the Linux kernel: Difference between revisions
From Variscite Wiki
No edit summary |
|||
| (6 intermediate revisions by 3 users not shown) | |||
| Line 2: | Line 2: | ||
--> {{#vardefine:RELEASE_PARAM|{{#urlget:release}}}} <!-- | --> {{#vardefine:RELEASE_PARAM|{{#urlget:release}}}} <!-- | ||
--> {{#lst:Android_Platform_Customization|{{#var:RELEASE_PARAM|RELEASE_N7.1.1_1.0.0_VAR-SOM-MX6}}}} <!-- | --> {{#lst:Android_Platform_Customization|{{#var:RELEASE_PARAM|RELEASE_N7.1.1_1.0.0_VAR-SOM-MX6}}}} <!-- | ||
--> {{PageHeader|{{#var:HARDWARE_NAME}} - | --> {{PageHeader|{{#var:HARDWARE_NAME}} - {{#var:ANDROID_VERSION}} - Customizing the Linux kernel}} {{DocImage|category1=Android|category2={{#var:HARDWARE_NAME}}}} __toc__ | ||
== Making changes to kernel configuration == | == Making changes to kernel configuration == | ||
| Line 9: | Line 9: | ||
$ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} {{#var:KERNEL_DEFCONFIG}} | $ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} {{#var:KERNEL_DEFCONFIG}} | ||
$ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} menuconfig | $ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} menuconfig | ||
Navigate the menu and select the desired kernel functionalities, save the new configuration and exit.<br> | Navigate through the menu, and select the desired kernel functionalities, save the new configuration, and exit.<br> | ||
Then, save the new configuration as the default configuration:<br> | Then, save the new configuration as the default configuration:<br> | ||
$ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} savedefconfig | $ make ARCH={{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}} savedefconfig | ||
$ cp arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/{{#var:KERNEL_DEFCONFIG}} arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/{{#var:KERNEL_DEFCONFIG}}.orig | $ cp arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/{{#var:KERNEL_DEFCONFIG}} arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/{{#var:KERNEL_DEFCONFIG}}.orig | ||
$ cp defconfig arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/ | $ cp defconfig arch/{{#ifeq: {{#var:HARDWARE_NAME}} |VAR-SOM-MX6|arm|arm64}}/configs/{{#var:KERNEL_DEFCONFIG}} | ||
== Making changes to the device tree == | == Making changes to the device tree == | ||
| Line 25: | Line 25: | ||
$ source build/envsetup.sh | $ source build/envsetup.sh | ||
$ lunch {{#var:ANDROID_MACHINE_NAME}}-userdebug | $ lunch {{#var:ANDROID_MACHINE_NAME}}-userdebug | ||
{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX6 | | |||
$ make bootimage | $ make bootimage | ||
| | | | ||
$ make bootimage | |||
$ make dtboimage | $ make dtboimage | ||
}} | }} | ||
== Flashing the boot image to the target == | == Flashing the boot image to the target == | ||
Run the following to boot the device into fastboot mode and reflash the boot image:<br> | Run the following to boot the device into fastboot mode and reflash the boot image:<br> | ||
$ adb reboot bootloader | $ adb reboot bootloader | ||
$ sudo `which fastboot` flash boot{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX6 | out/target/product/var_mx6/boot-<setup-name>.img |_a | $ sudo `which fastboot` flash boot{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX6 | out/target/product/var_mx6/boot-<setup-name>.img |_a out/target/product/{{#var:ANDROID_MACHINE_NAME}}/boot.img }} | ||
{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX6 | | {{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX6 | | ||
Latest revision as of 21:59, 12 September 2023
VAR-SOM-MX6 - N7.1.1 - Customizing the Linux kernel
Making changes to kernel configuration
$ cd ~/var_n_711_100/n_711_100_build/vendor/variscite/kernel_imx/ $ make ARCH=arm mrproper $ make ARCH=arm imx_v7_var_android_defconfig $ make ARCH=arm menuconfig
Navigate through the menu, and select the desired kernel functionalities, save the new configuration, and exit.
Then, save the new configuration as the default configuration:
$ make ARCH=arm savedefconfig $ cp arch/arm/configs/imx_v7_var_android_defconfig arch/arm/configs/imx_v7_var_android_defconfig.orig $ cp defconfig arch/arm/configs/imx_v7_var_android_defconfig
Making changes to the device tree
For example, edit the following file:
- VAR-SOM-MX6 : ~/var_n_711_100/n_711_100_build/vendor/variscite/kernel_imx/arch/arm/boot/dts/imx6qdl-var-som.dtsi
- DART-MX6: ~/var_n_711_100/n_711_100_build/vendor/variscite/kernel_imx/arch/arm/boot/dts/imx6qdl-var-dart.dtsi
For example, if you want to make changes related to the SPI configuration you can refer to: SPI
Build a new boot.img
When you perform changes to the kernel, you may build boot.img solely instead of building the whole Android.
$ cd ~/var_n_711_100/n_711_100_build $ source build/envsetup.sh $ lunch -userdebug $ make bootimage
Flashing the boot image to the target
Run the following to boot the device into fastboot mode and reflash the boot image:
$ adb reboot bootloader $ sudo `which fastboot` flash bootout/target/product/var_mx6/boot-<setup-name>.img Replace setup-name as per above table. $ sudo `which fastboot` reboot