| ********************** |
| SolidRun Clearfog Base |
| ********************** |
| |
| This file documents Buildroot's support for the Clearfog Base by Solid Run. |
| |
| Vendor's documentation: |
| https://wiki.solid-run.com/doku.php?id=products:a38x:documents |
| |
| Warning for eMMC variant of the MicroSoM |
| ======================================== |
| |
| If you bought a MicroSoM version that includes an on-board eMMC flash, the |
| built-in microSD card slot *WILL NOT WORK*. The Internet says that you have to |
| upload the first bootloader via UART. This manual does not cover these steps; |
| only MicroSoMs without the eMMC are supported. |
| |
| Limitations |
| =========== |
| |
| There's no access to the SPI flash in this combination of kernel/uboot/dts. |
| |
| There is no support for the SFP. |
| |
| Build |
| ===== |
| |
| Start with the default Buildroot's configuration for Clearfog: |
| |
| make solidrun_clearfog_defconfig |
| |
| Build all components: |
| |
| make |
| |
| The results of the build are available in ./output/images. |
| |
| Create a bootable SD card |
| ========================= |
| |
| To determine the device associated to the SD card have a look in the |
| /proc/partitions file: |
| |
| cat /proc/partitions |
| |
| Buildroot prepares a bootable "sdcard.img" image in the output/images/ |
| directory, ready to be dumped on a microSD card. Launch the following |
| command as root: |
| |
| dd if=output/images/sdcard.img of=/dev/<your-microsd-device> conv=fdatasync |
| |
| *** WARNING! The script will destroy all the card content. Use with care! *** |
| |
| For details about the medium image layout, see the definition in |
| board/solidrun/clearfog/genimage.cfg. |
| |
| Boot the Clearfog board |
| ======================= |
| |
| Here's how to boot the board: |
| |
| - Set up the DIP switches for microSD boot. The correct values are: |
| 1: off, 2: off, 3: ON, 4: ON, 5: ON. In this scheme, switch #1" is closer to |
| the ethernet ports and #5 is closer to the microSD card, "ON" means towards |
| the SOM, and "off" means towards the SFP cage. |
| - Connect to the board's console over the microUSB port. |
| - Insert the SD card into the slot on the board (pins up). |
| - Power up the board. |
