Buildroot Local Firmware Upgrade

Buildroot supports upgrading firmware from external storage devices. The following is the upgrade process description. For how to compile the Buildroot firmware, please refer to the Compile Buildroot firmware page of the corresponding board wiki.

Make upgrade firmware

Follow the normal firmware compilation process to make the firmware for upgrade.

To upgrade firmware, it is not necessary to upgrade all partitions. You can modify the package-file file, comment out the partitions that do not need to be upgraded, or change to RESERVED, which can reduce the size of the upgraded firmware.

For example, modify the file tools/linux/Linux_Pack_Firmware/rockdev/rk356x-package-file, change the relative path of rootfs to RESERVED, so that the root filesystem will not be packaged, that is, the root filesystem partition will not be upgraded.

(1) Modify the file tools/linux/Linux_Pack_Firmware/rockdev/package-file.

For example, change the relative path of rootfs to RESERVED, so that the root filesystem will not be packaged, that is, the root filesystem partition will not be upgraded.

# name          relative path
#
#hwdef          hwdef
package-file    package-file
bootloader      image/miniloaderall.bin
parameter       image/parameter.txt
trust           image/trust.img
uboot           image/uboot.img
misc            image/misc.img
boot            image/boot.img
recovery        image/recovery.img
rootfs          RESERVED
oem             image/oem.img
userdata:grow   image/userdata.img
backup          RESERVED

(2) Compile:

./build.sh updateimg

Copy the prepared upgrade firmware to the U disk, TF card, or the /userdata/ directory of the device, and rename it to update.img.

Note: If the upgrade firmware is placed in the /userdata/ directory of the device, do not package userdata.img, and change image/userdata.img to RESERVED.

Upgrade

Method 1

Configuration via the qsetting QT application. Click the "Update" function option to operate.

Method 2

Via the update command:

# U disk
update ota /udisk/update.img
# TF card
update ota /sdcard/update.img
# /userdata/
update ota /userdata/update.img

Wait for the upgrade to complete. After the upgrade is successful, the device will reboot into the system.