Boot mode description

Preface

The ROC-RK3576-PC is installed with the one kind of operating system
by default. If users want to run other operating systems, they need to
download the corresponding firmware to the mainboard.

ROC-RK3576-PC has a flexible startup mode. Generally, the ROC-
RK3576-PC development board will not turn brick unless the hardware is
damaged.

If the accident appeared in the process of upgrading, bootloader
damage, leading to unable to upgrade again, while still can enter
"MaskRom" mode to repair.

How to get the Firmwares

Firmware download link

Upgrade method

ROC-RK3576-PC supports firmware update through the following two
methods:

Upgrade the firmware via USB cable<br><br>     Use the USB cable to
connect the mainboard to the computer, and use the upgrade tool to
program the firmware to the mainboard.<br><br>

Upgrade the firmware via SD card<br><br>    Use the upgrade card
creation tool to make the MicroSD card as an upgrade card, insert the
upgrade card into the mainboard, power on, and the machine will
automatically perform the upgrade.

Boot media

eMMC interface

SDMMC interface

Boot mode

ROC-RK3576-PC has three startup modes:

Normal mode

Loader mode

MaskRom mode

Normal mode

Normal mode is the Normal startup process. Each component loads in
turn and enters the system normally.

Loader mode

In Loader mode, the bootloader will enter the upgrade state, waiting
for the host command for firmware upgrade, etc.

MaskRom mode

MaskRom mode is used for system repair when the bootloader is damaged.

Under normal circumstances, it is not necessary to enter "MaskRom
mode". Only when the bootloader verification fails (IDB block cannot
be read, or the bootloader is damaged), the BootRom code will enter
"MaskRom mode". At this time, the BootRom code waits for the host to
transmit the bootloader code through the USB interface, load and run
it.

Forcibly enter MaskRom mode, please refer to the chapter MaskRom Mode.