Android Customizing IMX8 U-Boot: Difference between revisions
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=Making changes to U-boot= | =Making changes to U-boot= | ||
== | ==Making Changes to U-boot config== | ||
$ cd {{#var:BUILD_FOLDER}}/{{#var:BUILD_FOLDER_ANDROID}}/vendor/variscite/uboot-imx/ | |||
$ make mrproper | |||
$ make {{#var:U-BOOT_SD_DEFCONFIG}} | |||
$ make menuconfig | |||
Navigate the menu and select the desired u-boot functionalities, save the new configuration and exit.<br> | |||
Then, save the new configuration as the default configuration:<br> | |||
$ make savedefconfig | |||
===Edit U-Boot command line arguments=== | ===Edit U-Boot command line arguments=== | ||
https://github.com/varigit/uboot-imx/blob/{{#var:U-BOOT_BRANCH}}/{{#var:U-BOOT_ANDROID_CONFIG_FILE}} | https://github.com/varigit/uboot-imx/blob/{{#var:U-BOOT_BRANCH}}/{{#var:U-BOOT_ANDROID_CONFIG_FILE}} | ||
Revision as of 01:44, 23 January 2020
Android - Customizing U-boot
Overview
This section explains how to customize bootloader and update it on VAR-SOM-MX6 platform via adb.
Making changes to U-boot
Making Changes to U-boot config
$ cd ~/var_n_711_100/n_711_100_build/vendor/variscite/uboot-imx/ $ make mrproper $ make mx6var_som_sd_android_defconfig $ make menuconfig
Navigate the menu and select the desired u-boot functionalities, save the new configuration and exit.
Then, save the new configuration as the default configuration:
$ make savedefconfig
Edit U-Boot command line arguments
https://github.com/varigit/uboot-imx/blob/n7.1.1_1.0.0_ga_var01/
Change following macro
#define CONFIG_EXTRA_ENV_SETTINGS \
"bootargs=" \
.......
....\0"
And append "androidboot.selinux=permissive\0" to the kernel
#define CONFIG_EXTRA_ENV_SETTINGS \
"bootargs=" \
.......
androidboot.selinux=permissive\0"
Compile U-Boot
Compile the new U-Boot
Update U-Boot
Flash the binaries following Android Recovery SD card and replacing your binaries in /opt/images/Android/
The updated U-Boot should have the SeLinux in permissive mode.