HummingBoard RZ/G2LC/G2UL/G2L/V2l Boot Select

SD Card

You will need to download an operating system for the HummingBoard RZ/G2LC | RZ/G2L | RZ/V2L and flash into a blank SD card to use the system. You can download official release distributions and find flashing instructions at our software page. If you need help to flash the SD card, please see our article Flashing an SD Card .

Boot Select

Before powering up the board for the first time it is recommended to select the boot media. In order to configure the boot media to please reference the below tables:

"X" means switch position not relevant.

When using HummingBoard Ripple & RZ/G2LC or RZ/G2UL SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	X	X	ON
eMMC	OFF	ON	OFF	X	X	OFF
Serial Download	OFF	ON	ON	X	X	X

When using HummingBoard Pro & RZ/G2LC or RZ/G2UL SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	ON	X	X
eMMC	OFF	ON	OFF	OFF	X	X
Serial Download	OFF	ON	ON	X	X	X

When using HummingBoard Ripple & RZ/G2L or RZ/V2L SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	X	X	OFF
eMMC	OFF	ON	OFF	X	X	ON
Serial Download	OFF	ON	ON	X	X	X

When using HummingBoard Pro & RZ/G2L or RZ/V2L SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	OFF	X	X
eMMC	OFF	ON	OFF	ON	X	X
Serial Download	OFF	ON	ON	X	X	X

When using HummingBoard IIOT & RZ/G2LC or RZ/G2UL SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	ON	OFF	ON
eMMC	ON	OFF	OFF	OFF	OFF	ON
Serial Download	ON	OFF	ON	OFF	OFF	ON

When using HummingBoard IIOT & RZ/G2L or RZ/V2L SOM

Boot Source / Switch	1	2	3	4	5	6
microSD	OFF	OFF	OFF	OFF	OFF	ON
eMMC	ON	OFF	OFF	ON	OFF	ON
Serial Download	ON	OFF	ON	OFF	OFF	ON

Choosing the SD/eMMC device for the Linux from u-boot

In the u-boot, selecting a device (SD or eMMC) that will be used in Linux is possible. The device selection is based on the environment variable in the u-boot.

For the SD card selection:

setenv sdio_select sd

For the eMMC card selection:

setenv sdio_select emmc