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SolidRun Clearfog Base
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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
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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
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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.
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