Difference between revisions of "iMX6 OpenRex Basic Recovery"
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== Description == | == Description == | ||
The recovery procedure consists of following steps: | The recovery procedure consists of following steps: | ||
| − | * Loading bootloader binary over USB using | + | * Loading bootloader binary over USB using Mfgtool feature |
* Flashing new bootloader over Ethernet using TFTP | * Flashing new bootloader over Ethernet using TFTP | ||
* Erasing bootloader environment | * Erasing bootloader environment | ||
| Line 17: | Line 17: | ||
* TFTP server | * TFTP server | ||
* DHCP server (optional) | * DHCP server (optional) | ||
| − | + | <br /> | |
This procedure is intended to be used to erase bootloader environment or to load the default environment. | This procedure is intended to be used to erase bootloader environment or to load the default environment. | ||
== Updating bootloader == | == Updating bootloader == | ||
| − | === Using | + | === Using Mfgtool === |
If the board is unable to boot (e.g. when bootloader was deleted or not transferred successfully), [[iMX6 OpenRex USB Booting|USB Booting]] option should be used to load the image file. | If the board is unable to boot (e.g. when bootloader was deleted or not transferred successfully), [[iMX6 OpenRex USB Booting|USB Booting]] option should be used to load the image file. | ||
Latest revision as of 10:14, 24 April 2022
Description
The recovery procedure consists of following steps:
- Loading bootloader binary over USB using Mfgtool feature
- Flashing new bootloader over Ethernet using TFTP
- Erasing bootloader environment
- Resetting SBC
- Creating a new SD card containing filesystem
Requirements:
- Mfg_tool
- Serial adapter with terminal application
- TFTP server
- DHCP server (optional)
This procedure is intended to be used to erase bootloader environment or to load the default environment.
Updating bootloader
Using Mfgtool
If the board is unable to boot (e.g. when bootloader was deleted or not transferred successfully), USB Booting option should be used to load the image file.
From TFTP server
Download the U-Boot image (on computer acting as TFTP server):
cd /srv/tftp/imx6/ wget http://downloads.voipac.com/files/iMX6_OpenRex_SBC/software/uboot/binaries/u-boot-imx6-openrexbasic-2.4.imx
Update the bootloader in U-Boot:
setenv ipaddr 192.168.0.150 setenv serverip 192.168.0.1 mw.b 0x10800000 0xFF 0x80000;if tftp 0x10800000 imx6/u-boot-imx6-openrexbasic-2.4.imx; then if sf probe 2:2; then sf erase 0x0 0x80000;sf write 0x10800000 0x400 0x7fc00; fi; fi reset
From SD card
Creating SD card in Linux
Create VFAT partition:
sudo fdisk /dev/sdX
Unplug/plug SD card and format the partition afterwards:
sudo mkfs.vfat /dev/sdX1
Check if device was correctly mounted and copy bootloader into it:
cd /media/user/61B3-D9BF wget http://downloads.voipac.com/files/iMX6_OpenRex_SBC/software/uboot/binaries/u-boot-imx6-openrexbasic-2.4.imx
Update the bootloader in U-Boot:
mw.b 0x10800000 0xFF 0x80000; if fatload mmc 0:1 0x10800000 u-boot-imx6-openrexbasic-2.4.imx; then if sf probe 2:2; then sf erase 0x0 0x80000;sf write 0x10800000 0x400 0x7fc00; fi; fi reset
Erasing bootloader environment
OpenRex U-Boot > env default -f -a ## Resetting to default environment OpenRex U-Boot > saveenv Saving Environment to SPI Flash... SF: Detected SST26VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB Erasing SPI flash...Writing to SPI flash...done
Creating bootable SD card
If a fresh SD card containing filesystem is needed, follow these steps to prepare the device.