Igor: Created page with "= Introduction = This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter '''UUU'''). {{Note|Follow the [https://gi..."

2026-11-12T17:55:41Z

Created page with "= Introduction = This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter '''UUU'''). {{Note|Follow the [https://gi..."

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= Introduction =
This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter '''UUU''').

{{Note|Follow the [https://github.com/NXPmicro/mfgtools/blob/master/README.md Universal Update Utility instructions] to install and setup the UUU tool on a host Linux station.}}

= Getting Recovery U-Boot Firmware Image =
* Download the '''IOT-GATE-IMX8PV2 firmware recovery image''' from the [https://www.compulab.com/products/iot-gateways/iot-gate-imx8pv2-industrial-iot-edge-gateway/#devres U-boot section of IOT-GATE-IMX8PV2 Resources] to the host Linux station.
* Extract the archive on the host Linux station:
<pre>
unzip iot-gate-imx8pv2_firmware-recovery-image_YYYY-MM-DD.zip -d /path/to/iot-gate-imx8pv2-firmware
</pre>

= Determining RAM size =
Determine the correct DRAM size of the IOT-GATE-IMX8PV2 according to the label located on the bottom side of the device. DRAM size is encoded in the unit's '''D''' [https://www.compulab.com/products/iot-gateways/iot-gate-imx8pv2-industrial-iot-gateway/#specs option].<br>
Use the table below to determine '''DRAM_CONF''' value:

{| border="1" cellspacing="1" cellpadding="3" style="border-collapse:collapse; text-align:center;"
! Product '''D''' Option
! DRAM Size (MB)
! DRAM_CONF
|-
| D1
| 1024
| d1d8
|-
| D2
| 2048
| d2d4
|-
| D4
| 4096
| d2d4
|-
| D8
| 8192
| d1d8
|}

DRAM configuration is handled by the bootloader (SPL/U-Boot), and the relevant information is passed to the Linux kernel via the Device Tree.<br>
In particular, the detected DRAM size, expressed in megabytes (MB), can be read from the file ''/proc/device-tree/som.info/dram.size''.<br>
The following commands can be used to determine the DRAM size on a running IOT-GATE-IMX8PV2 gateway:

* DRAM size in megabytes (MB):
<pre>compulab@iot-gate-imx8pv2:~$ echo $(</proc/device-tree/som.info/dram.size)</pre>
* DRAM size in gigabytes (GB):
<pre>compulab@iot-gate-imx8pv2:~$ echo $(( $(</proc/device-tree/som.info/dram.size) / 1024 ))</pre>

= Flashing U-Boot Firmware =
* Power off the IOT-GATE-IMX8PV2 device.
* Remove the [[IOT-GATE-IMX8PV2:_Getting_Started#Service_bay_layout|Service bay door]] to access the USB programming port.
* Connect the IOT-GATE-IMX8PV2 micro-USB connector with the workstation USB port using a standard micro-USB cable.
* Power on the IOT-GATE-IMX8PV2 device via the main DC input.
* Issue the following commands on the host Linux station:
<pre>
uuu -lsusb
</pre>
: Expected output:
<pre>
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.5.243-15-g0220e96

Connected Known USB Devices
Path Chip Pro Vid Pid BcdVersion Serial_no
====================================================================
1:132 MX865 SDPS: 0x1FC9 0x0146 0x0002 0D138800718FDB45
</pre>
* Flash U-Boot Firmware. Replace <DRAM_CONF> with the actual value:
<pre>
sudo uuu -d -v -b emmc /path/to/iot-gate-imx8pv2-firmware/flash.bin.<DRAM_CONF>
</pre>
* Make sure the deployment is completed with no error

= After Installation =
* Turn off the device
* Disconnect the micro-USB cable from the device's programming port
* Turn on the device
* Press a key to prevent a possible autoboot and get into the U-Boot command prompt
* Restore default boot environment, save it and reset device:
:<pre>env default -a ; saveenv ; reset</pre>

[[Category:Linux]]
[[Category:U-Boot]]
[[Category:IOT-GATE-IMX8PV2]]

IOT-GATE-IMX8PV2: U-Boot: Recovery - Revision history

Igor: Created page with "= Introduction = This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter '''UUU'''). {{Note|Follow the [https://gi..."