Boot mode description
Preface
CT36L/CT36B is shipped with the Linux operating system installed by
default.
CT36L/CT36B has flexible startup methods. Under normal circumstances,
the CT36L/CT36B development board will not become bricked unless the
hardware is damaged.
If an accident occurs during the upgrade process and the bootloader is
damaged, making it impossible to re-upgrade, you can still enter
"MaskRom" mode to repair it.
Firmware acquisition
CT36L Download link
CT36B Download link
Upgrade method
CT36L/CT36B supports firmware upgrade through the following two
methods:
Use USB cable to upgrade firmware
Use CT36L/CT36B to connect
the motherboard to the computer, and burn the firmware to the
motherboard through the upgrade tool.
Upgrade firmware using SD card
Note 1: SocToolKit tool version 1.7 or higher is required to support
the SD card upgrade boot function.
Note 2: This function requires the user to run SocToolKit.exe as an
administrator (it will ask by default when opening the tool).
Insert the successfully created SD card into the device and then
restart. The device will enter the U-Boot terminal in the SD card
first.
If the SD card has an upgrade function, the device will be
automatically upgraded.
After the upgrade is completed, you need to remove the SD card and
restart the device to enter the device system.
Start memory
CT36L loads the system from memory:
SPI FLASH interface
SDMMC interface
CT36B loads the system from memory:
EMMC interface
SDMMC interface
Startup mode
CT36L/CT36B has two startup modes:
Normal mode
MaskRom mode
Normal mode
Normal mode is the normal startup process. Each component is loaded in
sequence and the system is entered normally.
MaskRom mode
MaskRom mode is used for firmware programming.
***To forcefully enter "MaskRom mode", please refer to the chapter
"MaskRom Mode"
. ***