upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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Stefano Babic
552a848e4f
|
7 years ago | |
|---|---|---|
| .. | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| imximage.cfg | ||
| pico-imx7d.c | ||
README
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.