Difference between revisions of "IOT-GATE-iMX8 and SBC-IOT-iMX8: U-Boot: Recovery"
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imported>Uri.mashiach |
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:Replace '''/dev/sdX''' with the actual SD card device: | :Replace '''/dev/sdX''' with the actual SD card device: | ||
<pre> | <pre> | ||
− | sudo dd if=iot-gate-imx8_firmware- | + | sudo dd if=iot-gate-imx8_firmware-recovery_2022-08-02.img of=/dev/sdX bs=1M status=progress |
</pre> | </pre> | ||
+ | |||
=Flashing The Device U-Boot= | =Flashing The Device U-Boot= | ||
* Install the recovery SD card in the IOTG-ACC-M2SD module. | * Install the recovery SD card in the IOTG-ACC-M2SD module. | ||
Line 23: | Line 24: | ||
* Install jumper E1. | * Install jumper E1. | ||
* Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. | * Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. | ||
+ | * Load the U-Boot image to the RAM. | ||
+ | <pre> | ||
+ | u-boot=> mmc partconf 2 0 1 0 | ||
+ | u-boot=> load mmc 1 ${loadaddr} iot-gate-imx8-firmware | ||
+ | </pre> | ||
+ | * Make shure that the image was loaded: | ||
+ | <pre style="color: red"> | ||
+ | 1666004 bytes read in 153 ms (10.4 MiB/s) | ||
+ | </pre> | ||
* Write the U-Boot image to the internal storage: | * Write the U-Boot image to the internal storage: | ||
<pre> | <pre> | ||
− | + | u-boot=> mmc dev 2 1; mmc write ${loadaddr} 0x42 0xE00 | |
− | |||
− | u-boot=> mmc dev | ||
</pre> | </pre> | ||
* Power off the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. | * Power off the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. | ||
* Remove jumper E1. | * Remove jumper E1. | ||
* Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. | * Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit. |
Latest revision as of 07:00, 9 August 2022
Introduction
The following scenarios can lead to a bricked device:
- U-Boot update failure.
- U-Boot update with corrupted image.
In that case U-Boot recovery is needed.
Creating The Recovery SD Card
- Download the U-Boot recovery image archive.
- Extract the image archive:
unzip iot-gate-imx8_firmware-recovery-image.zip
- Use a Linux workstation and an SD card reader to write the U-Boot recovery image on an SD card.
- Replace /dev/sdX with the actual SD card device:
sudo dd if=iot-gate-imx8_firmware-recovery_2022-08-02.img of=/dev/sdX bs=1M status=progress
Flashing The Device U-Boot
- Install the recovery SD card in the IOTG-ACC-M2SD module.
- The IOTG-ACC-M2SD module is included in the evaluation kit.
- Power off the IOT-GATE-iMX8/SBC-IOT-iMX8 unit.
- If a secondary storage module is installed, remove the module from socket P14.
- Install the IOTG-ACC-M2SD module in socket P14.
- Install jumper E1.
- Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit.
- Load the U-Boot image to the RAM.
u-boot=> mmc partconf 2 0 1 0 u-boot=> load mmc 1 ${loadaddr} iot-gate-imx8-firmware
- Make shure that the image was loaded:
1666004 bytes read in 153 ms (10.4 MiB/s)
- Write the U-Boot image to the internal storage:
u-boot=> mmc dev 2 1; mmc write ${loadaddr} 0x42 0xE00
- Power off the IOT-GATE-iMX8/SBC-IOT-iMX8 unit.
- Remove jumper E1.
- Power on the IOT-GATE-iMX8/SBC-IOT-iMX8 unit.