mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-28 05:53:54 +00:00
50 lines
1.1 KiB
Text
50 lines
1.1 KiB
Text
|
How to update U-Boot on pico-imx7d board
|
||
|
|
----------------------------------------
|
||
|
|
|
||
|
|
Required software on the host PC:
|
||
|
|
|
||
|
|
- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader
|
||
|
|
|
||
|
|
Build U-Boot for pico:
|
||
|
|
|
||
|
|
$ make mrproper
|
||
|
|
$ make pico-imx7d_defconfig
|
||
|
|
$ make
|
||
|
|
|
||
|
|
This generates the U-Boot binary called u-boot.imx.
|
||
|
|
|
||
|
|
Put pico board in USB download mode (refer to the PICO-iMX7D Quick Start Guide
|
||
|
|
page 3)
|
||
|
|
|
||
|
|
Connect a USB to serial adapter between the host PC and pico.
|
||
|
|
|
||
|
|
Connect a USB cable between the OTG pico port and the host PC.
|
||
|
|
|
||
|
|
Open a terminal program such as minicom.
|
||
|
|
|
||
|
|
Copy u-boot.imx to the imx_usb_loader folder.
|
||
|
|
|
||
|
|
Load u-boot.imx via USB:
|
||
|
|
|
||
|
|
$ sudo ./imx_usb u-boot.imx
|
||
|
|
|
||
|
|
Then U-Boot starts and its messages appear in the console program.
|
||
|
|
|
||
|
|
Use the default environment variables:
|
||
|
|
|
||
|
|
=> env default -f -a
|
||
|
|
=> saveenv
|
||
|
|
|
||
|
|
Run the UMS command:
|
||
|
|
=> ums 0 mmc 0
|
||
|
|
|
||
|
|
Transfer u-boot.imx to be flashed into the eMMC:
|
||
|
|
|
||
|
|
$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1; sync
|
||
|
|
|
||
|
|
Remove power from the pico board.
|
||
|
|
|
||
|
|
Put pico board into normal boot mode.
|
||
|
|
|
||
|
|
Power up the board and the new updated U-Boot should boot from eMMC.
|