SD Card
You will need to download an operating system for the HummingBoard RzRZ/G2LC | RZ/G2L | RZ/V2L and flash in to into a blank SD card in order 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 .
When using RZ/G2LC SOM
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 diagram :
| Info |
|---|
The black rectangle represents the switch position. |
...
When using HummingBoard Ripple & RZ/G2LC or RZ/G2UL SOM
...
SD boot (Dip-Switch) [S3 = {1:off, 2:off, 3:off,4-5: N/C, 6:on}]
eMMC boot (Dip-Switch) [S3 = {1:off, 2:on, 3:off,4-5: N/C, 6:off}]
Serial Downloader (Dip-Switch) [S3 = {1:off, 2:on, 3:on,4-5: N/C, 6:off}]
When using HummingBoard Pro & RZ/G2LC or RZ/G2UL SOM
...
SD boot (Dip-Switch) [S3 = {1:off, 2:off, 3:off, 4:on, 5-6: N/C}]
eMMC boot (Dip-Switch) [S3 = {1:off, 2:on, 3:off, 4: off, 5-6: N/C}]
Serial Downloader (Dip-Switch) [S3 = {1:off, 2:on, 3:on, 4: off, 5-6: N/C}]
When using HummingBoard Ripple & RZ/G2L or RZ/V2L SOM
...
SD boot (Dip-Switch) [S3 = {1-3: off, 4-5: N/C, 6: off}]
eMMC boot (Dip-Switch) [S3 = {1:off, 2:on, 3:off, 4-5: N/C, 6:on}]
Serial Downloader (Dip-Switch) [S3 = {1:off, 2:on, 3:on, 4-5: N/C, 6:on}]
When using HummingBoard Pro & RZ/G2L or RZ/V2L SOM
...
SD boot (Dip-Switch) [S3 = {1:off, 2:off, 3:off, 4:off, 5-6: N/C}]
eMMC boot (Dip-Switch) [S3 = {1:off, 2:on, 3:off, 4: on, 5-6: N/C}]
Serial Downloader (Dip-Switch) [S3 = {1:off, 2-4: on, 5-6: N/C}]
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:
| Code Block |
|---|
setenv sdio_select sd |
For the eMMC card selection:
| Code Block |
|---|
setenv sdio_select emmc |