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Out of the Box
The following section describes the steps to boot the i.MX 8M Plus PEVK.
Development kit contains:
- i.MX 8M Plus PEVK board
- Power Supply - USB Type C 45W Power Delivery Supply, 5 V/3 A; 9 V/3 A; 15 V/3 A; 20 V/2.25 A supported
- Cable – Assembly, USB 3.0, Type-C Male to Type-A Male
- Cable – Assembly, USB 2.0, Type-A Male to Micro-B Male
- Adapter – USB 3.0, Type-C Male to Type-A Female
- Software Linux BSP image programmed in eMMC
- Quick Start Guide
Get started developing your application on the i.MX 8M Plus PEVK with the out-of-the-box video. For more information please visit the i.MX 8M Plus applications processor Documentation.
1.1 Get Familiar with the Board
Figure 1. i.MX 8M Plus Power EVK front
Figure 2. i.MX 8M Plus Power EVK back
The i.MX 8M Plus PEVK is software compatible with the i.MX 8M Plus EVK, but contains additional logic to provide detailed run time power information via a PC-based SW tool.
1.2. Boot from eMMC
The i.MX 8M Plus PEVK comes with a pre-built NXP Linux binary demo image flashed on the eMMC. Without modifying the binary inside, booting from the eMMC provides a default system with certain features for building other applications on top of Linux.
To understand more about NXP’s Embedded Linux®, Embedded Android™ or MCUXpresso SDK, continue reading the next sections.
1.3 Connect USB Debug Cable
Connect the micro-B end of the supplied USB cable into Debug UART port
J23. Connect the
other end of the cable to a host computer.
Four UART connections will appear on the PC, the third port for A53 core and the fourth for M7
core system debugging.
If you are not sure about how to use a terminal application, try one of the following tutorials depending on the operating system of the host machine:
Linux
Windows
Windows
1.4 Connect the HDMI cable
To see the user interface provided with the image binary connect a monitor via the HDMI
connector (J17).
1.5 Boot Switch Setup
Click here to see the Boot Switch Setup.
1.6 Monitor Power at Runtime
Use BCU (Board Control Utilities) or PMT(Power Measurement Tool) to monitor real-time power consumption or export the data to Excel for analysis.
Take BCU as example:
Open terminal or command prompt/PowerShell on the PC, change directory to the location of BCU files and then use below command to monitor voltage/current/power for each rail:
For Linux:
$ sudo ./bcu monitor -hz=1 -board=imx8mpevkpwra1
For Windows:
.\bcu.exe monitor -hz=1 -board=imx8mpevkpwra1
A TUI for power monitor can be seen on the screen.
For more info about BCU and PMT, please refer to PEVK Power measurement User’s guide.
1.7 Connect Power Supply
Connect the power supply cable to the power connector (PORT0).
Power the board by flipping the switch (SW3).
The processor starts executing from the on-chip ROM code. With the default boot switch setup, the code reads the fuses to define the media where it is expected to have a bootable image. After it finds a bootable image, the U-Boot execution should begin automatically.
Information is printed in the serial console for the Corte ®-A53. If you do not stop the U-Boot process, it continues to boot the kernel.
1.8 Congratulations! Linux has booted!
As the board boots up, you will see 4 penguins appear in the upper left-hand corner of the monitor, and then you will see the Linux terminal Icon on the top left and timer on right top corner. Congratulations, you are up and running.
Embedded Linux®
This section is applicable ONLY if attempting to load a Linux operating system on the board.
The i.MX Linux Board Support Package (BSP) is a collection of binary files, source code and support files that are used to boot an Embedded Linux image on a specific i.MX development platform.
Current releases of Linux binary demo files can be found on the i.MX Linux download page. Additional documentation is available in the i.MX Linux documentation bundle under the Linux sections of the i.MX Software and Development Tool.
2.1 Overview
Before the Linux OS kernel can boot on an i.MX board, the Linux kernel is loaded to a boot device (SD card, eMMC and so on) and the boot switches are set to boot that device.
There are various ways to download the Linux BSP image for different boards and boot devices.
For this getting started guide, only a few methods to transfer the Linux BSP image to an SD card are listed. Experienced Linux developers can explore other options.
2.1.1. Download an NXP Linux BSP pre-built image
The latest pre-built images for the i.MX 8M Plus PEVK are available on the Linux download page under the most current version on Linux.
The pre-built NXP Linux binary demo image provides a typical system and basic set of features for using and evaluating the processor. Without modifying the system, the users can evaluate hardware interfaces, test SoC features and run user space applications.
When more flexibility is desired, an SD card can be loaded with individual components (boot
loader, kernel, dtb file and rootfs file) one-by-one or the *wic image is
loaded and the
individual
parts are overwritten with the specific components.
2.1.2 Burn NXP Linux BSP image using Universal Update Utility (UUU)
In addition to the connections from Out of box chapter, connect the PORT1 to the
host machine
using
the proper USB cable.
Turn off the board. Consult Boot switch setup and configure the board to boot on SDP (Serial Download Protocol) mode.
Depending on the OS used in the host machine, the way to transfer the Linux BSP image onto an SD card can vary. Choose an option below for detailed instructions:
2.2 Linux
2.2.1 Install UUU on Linux Distro
Download the latest stable files from UUU GitHub page. An extensive tutorial for UUU can be found in https://github.com/NXPmicro/mfgtools/wiki.
-
uuu -
libusb1(via apt-get or any other package manager)
2.2.2 Burn the NXP Linux BSP image to the board
The latest pre-built images for the i.MX 8M Plus PEVK are available on the Linux download page under the most current version on Linux.
The pre-built NXP Linux binary demo image provides a typical system and basic set of features for using and evaluating the processor. Without modifying the system, the users can evaluate hardware interfaces, test SoC features and run user space applications.
When more flexibility is desired, an SD card can be loaded with individual components
(boot
loader, kernel, dtb file and rootfs file) one-by-one or the .sdcard image
is
loaded and the
individual
parts are overwritten with the specific components.
By default, this procedure flashes the image to the emmc flash. Check the UUU GitHub page for reference on how to flash the image to other devices.
Open a terminal application and change directory to the location where uuu
and the
latest Linux
distribution for i.MX 8M Plus PEVK are located. Add execution permission to the
uuu file
and execute
it. Uuu waits for the USB device to connect
$ chmod a+x uuu
sudo ./uuu <release package>.zip
Turn on the board,
uuu starts to copy
the images to the board.
When it finishes, turn off the board and consult
to configure the board to boot from emmc.2.3 Windows
2.3.1 Install UUU on Windows
Download the latest stable files from UUU GitHub page. An extensive tutorial for UUU can be found in https://github.com/NXPmicro/mfgtools/wiki.
-
uuu.exe - Serial USB drivers (depending on your board and Windows installation - check Windows Device Manager)
2.3.2 Burn the NXP Linux BSP image to the board
By default, this procedure flashes the image to the emmc flash. Check the UUU GitHub page for reference on how to flash the image to other devices.
Open the command prompt application and navigate to the directory where the uuu.exe file and the Linux release for the i.MX 8M Plus PEVK are located.
uuu.exe <kernel_version>_images_<SOC>.zip
Turn on the board,
uuu starts to copy
the images to the board.
When it finishes, turn off the board and consult
to configure the board to boot from emmc.Minicom Tutorial
Serial communication console setup
On the command prompt of the Linux host machine, run the following command to determine the port number:
$ ls /dev/ttyUSB*
The smaller number is for Arm® Cortex®-A53 core and the bigger number is for Arm® Cortex ®-M4 core.
Minicom
Use the following commands to install and run the serial
communication program (minicom
as an example):
-
Install Minicom using Ubuntu package manager.
$ sudo apt-get install minicom -
Launch Minicom using a console window using the
port number determined earlier.
$ sudo minicom /dev/ttyUSB* -s - Configure Minicom as show in Figure 3
- The next step is to Connect the HDMI cable.
Figure 3. Minicom Configuration
Tera Term Tutorial
Serial communication console setup
The FTDI USB-serial chip on i.MX 8M Plus enumerates four serial
ports. Assume that the ports are
COM9,COM10,COM11,COM12, (then Use
COM11).
One port is for the serial console communication from Arm® Cortex®-A53
core and
the second port is for Arm® Cortex®-M7 core. The serial-to-USB drivers are
available at
http://www.ftdichip.com/Drivers/VCP.htm.
Note: To determine the port number of the i.MX board virtual COM port, open the Windows device manager and find USB serial Port in Ports (COM and LPT)
Teraterm
Is an open source terminal emulation application. This program displays the information sent from the NXP development platform’s virtual serial port.
- Download Tera Term. After the download, run the installer and then return to this webpage to continue.
- Launch TeraTerm. The first time it launches, it shows the following dialog. Select the serial option. Assuming your board is plugged in, there should be a COM port automatically populated in the list.
-
Configure the serial port settings (using the
COMport number identified earlier) to115200baud rate,8data bits, no parity and1stop bit. To do this, go to Setup → Serial Port and change the settings. - Verify that the connection is open. If connected, Tera Term shows something like below in its title bar.
- The next step is to Connect the HDMI cable.
PuTTY Tutorial
Serial communication console setup
The FTDI USB-serial chip on i.MX 8M Plus enumerates two serial
ports. Assume that the ports are
COM9,COM10,COM11 and COM12. One port is for
the serial console communication from Arm® Cortex®-A53 core and
the second port is for Arm® Cortex®-M7 core. The serial-to-USB drivers are
available at
http://www.ftdichip.com/Drivers/VCP.htm.
Note: To determine the port number of the i.MX board virtual COM port, open the Windows device manager and find USB serial Port in Ports (COM and LPT)
PuTTY is a popular terminal-emulation application. This program displays the information sent from the NXP development platform’s virtual serial port.
- Download PuTTY After the download, run the installer and then return to this webpage to continue.
- Launch PuTTY by either double clicking on the executable file you downloaded or from the Start menu, depending on the type of download you selected.
-
Configure In the window that launches. Select
the Serial radio button and enter the
COMport number that you determined earlier. Also enter the baud rate, in this case115200. -
Click Open to open the serial connection.
Assuming the board is connected and you entered the correct
COMport, the terminal window opens. If the configuration is not correct, PuTTY alerts you. - The next step is to Connect the HDMI cable.
Boot Switch Setup
The boot sequence is detailed in the i.MX 8M Plus Reference Manual. In short, the boot modes of the i.MX boards are controlled by the boot configuration switches.
The switches set the boot media (depending on board, i.e. SD card, eMMC, NAND), the serial download protocol mode (SDP) or the value set on eFuses.
The SDP is also the fallback for the boot media, in other words, when the switches are configured to boot from SD card but the SD card slot is empty, or the SD card binary content is not bootable, the boot sequence continues to the SDP boot.
Figure 4. Boot switch setup for i.MX 8M Plus PEVK
The following table lists the boot switch settings on the i.MX 8M Plus PEVK board. The same information can be found on i.MX 8M Plus Reference Manual and on silkscreen on the board near the switches.
Table 1. Boot modes available for i.MX 8M Plus PEVK
| Boot Media |
SW1101
[D1-D4]
|
|---|---|
| Boot from Fuse | 0000 |
| Serial Download | 0001 |
| eMMC/SDHC3 | 0010 |
| MicroSD/SDHC2 | 0011 |
| NAND 256 Page | 0100 |
| NAND 512 Page | 0101 |
| QSPI 3B Read | 0110 |
| ECSPI Flash | 1000 |
| Infinite Loop | 1110 |
Note: Make sure the boot switch is configured to boot from emmc.