DFU: Difference between revisions
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{{INIT_RELEASE_PARAM|am62-yocto- | {{INIT_RELEASE_PARAM|am62-yocto-kirkstone-6.1.46_09.01.00.08-v1.0}}<!-- | ||
--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | --> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | ||
--> {{PageHeader|Booting from USB using DFU (USB Device Firmware Upgrade)}} {{DocImage|category1={{#var:HARDWARE_NAME}}|category2=Yocto}}[[Category:Debian]] __toc__ | --> {{PageHeader|Booting from USB using DFU (USB Device Firmware Upgrade)}} {{DocImage|category1={{#var:HARDWARE_NAME}}|category2=Yocto}}[[Category:Debian]] __toc__ | ||
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= Installing dfu-util = | = Installing dfu-util = | ||
In order to avoid using sudo in all commands, create a custom udev rule to set the appropriate access permissions for your PC to the dfu USB device: | |||
$ echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="0451", ATTRS{idProduct}=="6165", GROUP="plugdev", MODE="0666"' | sudo tee /etc/udev/rules.d/99-dfu-util.rules | |||
$ sudo udevadm control --reload-rules && sudo udevadm trigger | |||
dfu-util is available in the Ubuntu apt repositories: | dfu-util is available in the Ubuntu apt repositories: | ||
$ sudo apt-get install dfu-util | $ sudo apt-get install dfu-util | ||
{{#ifexpr: {{#var:YOCTO_VERSION}} >= 4.1 | | |||
Alternatively, DFU is shipped with the Yocto SDK and can be used after installing and sourcing the SDK setup script. See the [https://variwiki.com/index.php?title=Yocto_Toolchain_installation&release={{#var:RELEASE_NAME}}#Build_a_complete_SDK Variscite SDK article] for more details | |||
}} | |||
= Building U-Boot = | = Building U-Boot = | ||
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== Load images using dfu-util == | == Load images using dfu-util == | ||
If the hardware is configured correctly, you should see the {{#HARDWARE_NAME}} using dfu-util: | If the hardware is configured correctly, you should see the {{#var:HARDWARE_NAME}} using dfu-util: | ||
dfu-util -l | |||
dfu-util 0.9 | dfu-util 0.9 | ||
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Export Environment Variables if not already done so: | Export Environment Variables if not already done so: | ||
$ export WORKDIR=~/am62x-var-som-u-boot && \ | $ export WORKDIR=~/am62x-var-som-u-boot && \ | ||
export UBOOT_DIR=$WORKDIR/ti-u-boot | export UBOOT_DIR=$WORKDIR/ti-u-boot{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | && \ | ||
export K3IG_DIR=$WORKDIR/k3-image-gen && \ | export K3IG_DIR=$WORKDIR/k3-image-gen && \}} | ||
Load the images: | Load the images: | ||
$ | $ dfu-util -R -a bootloader -D {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | $K3IG_DIR/ | $UBOOT_DIR/out/r5/ }}tiboot3.bin | ||
U-Boot SPL 2021.01-00010-ge7ae7212f8-dirty (Apr 27 2023 - 14:31:25 -0500) | U-Boot SPL 2021.01-00010-ge7ae7212f8-dirty (Apr 27 2023 - 14:31:25 -0500) | ||
SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar') | SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar') | ||
... | ... | ||
Trying to boot from DFU | Trying to boot from DFU | ||
$ | $ dfu-util -R -a tispl.bin -D $UBOOT_DIR/out/a53/tispl.bin | ||
################################################DOWNLOAD ... OK | ################################################DOWNLOAD ... OK | ||
... | ... | ||
Trying to boot from DFU | Trying to boot from DFU | ||
$ | $ dfu-util -R -a u-boot.img -D $UBOOT_DIR/out/a53/u-boot.img | ||
###DOWNLOAD ... OK | ###DOWNLOAD ... OK | ||
Ctrl+C to exit ... | Ctrl+C to exit ... | ||
Latest revision as of 14:17, 17 July 2024
This page is using the default release am62-yocto-kirkstone-6.1.46_09.01.00.08-v1.0.
To view this page for a specific Variscite SoM and software release, please follow these steps:
- Visit variwiki.com
- Select your SoM
- Select the software release
Introduction
The VAR-SOM-AM62 supports booting U-Boot (R5 SPL -> A53 SPL -> A53 U-Boot) from USB using dfu-util.
dfu-util is a host side implementation of the DFU 1.0 and DFU 1.1 specifications of the USB forum. DFU is intended to download and upload firmware to/from devices connected over USB. It ranges from small devices like micro-controller boards to mobile phones. Using dfu-util you can download firmware to your DFU-enabled device or upload firmware from it. dfu-util has been tested with the Openmoko Neo1973 and Freerunner and many other devices. For more information, see https://dfu-util.sourceforge.net/
This guide is derived from TI's USB Device Firmware Upgrade (DFU) guide and walks through the process of booting U-Boot from USB.
Installing dfu-util
In order to avoid using sudo in all commands, create a custom udev rule to set the appropriate access permissions for your PC to the dfu USB device:
$ echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="0451", ATTRS{idProduct}=="6165", GROUP="plugdev", MODE="0666"' | sudo tee /etc/udev/rules.d/99-dfu-util.rules
$ sudo udevadm control --reload-rules && sudo udevadm trigger
dfu-util is available in the Ubuntu apt repositories:
$ sudo apt-get install dfu-util
Alternatively, DFU is shipped with the Yocto SDK and can be used after installing and sourcing the SDK setup script. See the Variscite SDK article for more details
Building U-Boot
Build the bootloader images using the am62x_var_som_r5_usbdfu_defconfig and am62x_var_som_a53_defconfig configs files. The configs required for DFU boot as well as DFU in U-Boot are already enabled. For instructions to build the bootloader images please refer to the Build U-Boot from source code guide.
Booting using DFU
Hardware Setup
Prepare the VAR-SOM-AM62 and Symphony board to boot from DFU:
- Power off the Symphony board
- Change SW3 to boot from the SD Card
- Remove the SD Card
- Plug a USB OTG cable from J26 to your host computer
- Plug a USB cable to the J29 serial debug console.
- Apply power to the Symphony board
In the serial debug console, you should see:
[2085050.210604] usb 3-4.2.3: new high-speed USB device number 34 using xhci_hcd [2085050.334776] usb 3-4.2.3: New USB device found, idVendor=0451, idProduct=6165, bcdDevice= 2.00 [2085050.334779] usb 3-4.2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [2085050.334780] usb 3-4.2.3: Product: AM62x DFU [2085050.334782] usb 3-4.2.3: Manufacturer: Texas Instruments, Inc. [2085050.334783] usb 3-4.2.3: SerialNumber: 01.00.00.00
Load images using dfu-util
If the hardware is configured correctly, you should see the VAR-SOM-AM62 using dfu-util:
dfu-util -l dfu-util 0.9 Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc. Copyright 2010-2016 Tormod Volden and Stefan Schmidt This program is Free Software and has ABSOLUTELY NO WARRANTY Please report bugs to http://sourceforge.net/p/dfu-util/tickets/ Found DFU: [0451:6165] ver=0200, devnum=37, cfg=1, intf=0, path="3-4.2.3", alt=1, name="SocId", serial="01.00.00.00" Found DFU: [0451:6165] ver=0200, devnum=37, cfg=1, intf=0, path="3-4.2.3", alt=0, name="bootloader", serial="01.00.00.00"
After building the Build U-Boot from source code guide, load the images:
Export Environment Variables if not already done so: $ export WORKDIR=~/am62x-var-som-u-boot && \ export UBOOT_DIR=$WORKDIR/ti-u-boot Load the images: $ dfu-util -R -a bootloader -D $UBOOT_DIR/out/r5/tiboot3.bin U-Boot SPL 2021.01-00010-ge7ae7212f8-dirty (Apr 27 2023 - 14:31:25 -0500) SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar') ... Trying to boot from DFU $ dfu-util -R -a tispl.bin -D $UBOOT_DIR/out/a53/tispl.bin ################################################DOWNLOAD ... OK ... Trying to boot from DFU $ dfu-util -R -a u-boot.img -D $UBOOT_DIR/out/a53/u-boot.img ###DOWNLOAD ... OK Ctrl+C to exit ... U-Boot 2021.01-00010-ge7ae7212f8-dirty (Apr 27 2023 - 14:31:33 -0500) ...
You will see each image print to the console after they are loaded.