![]() Usbnet_devaddr - The virtual MAC address of the device (the board side). Now you should have a new Ethernet interface called usb_ether.īefore actually using it you should get to know the following environment variables: To enable it, you need to un-comment the defines of the following configs in include/configs/m圆var_som.h in the U-Boot source code: This is especially useful if you build a custom board without an Ethernet interface and you want to boot via network using TFTP. The USB Ethernet gadget allows you to make the board act as a USB Ethernet device when connecting its USB OTG/Client port to a host PC using a USB cable.īasically, it allows for "Ethernet over USB". Note: You should use a Linux PC host as Windows can't naturally read ext file systems. To exit the ums command and disconnect the USB device press ctrl+c. If not, you can use dmesg to see the names of the device and its partitions (it should be in the form of /dev/sdXX) and mount them yourself. On a DART-MX6 SOM when booting from eMMC:ĭepending on your host PC, it may automatically mount it or not. On a DART-MX6 SOM when booting from SD card: To do this you need to connect a USB cable between the OTG/Client port of the board and a regular USB Host port on your PC, and use U-Boot's ums command.ĭevtype can be any block device (e.g. ![]() This is especially useful for updating the internal eMMC. You can even use it to flash a new U-Boot, re-partition the storage, re-format it, etc. You will be able to access all the partitions of any block device that is on the board or connected to it, from your host PC - You will see them as /dev/sdXX, just like connecting a regular USB storage to your PC, and you'll be able to mount them, and have full read/write access to them. You can use the board as a USB Mass Storage device: If you want to add support for a different LCD that is not currently supported, you need to edit the displays array in board/variscite/m圆var_som/m圆var_som.c in the U-Boot source code, according to your LCD parameters. There is support for the three different 800x480 LCD screen types that Variscite uses. In case the rootfs is a UBIFS, mounting it in order to load the splash file will add ~1.8 seconds to the boot time.The splash image will be taken from whichever rootfs that is going to be mounted later at boot.The splash image is taken from /boot/splash.bmp in the root file system. To disable the splash screen, enter the following in the U-Boot command line interface: 4.3 Flashing the Linux device tree to NANDġ New features introduced in Variscite U-Boot 2015.04: 1.1 Splash ScreenĪ splash screen is enabled by default, and is shown on the LVDS LCD.3.1 List all supported commands and their description/usage (help command).1.7 DART-MX6 features previously missing. ![]() ![]()
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