mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
36 lines
1.1 KiB
Text
36 lines
1.1 KiB
Text
|
# Copyright (C) 2018 EETS GmbH - http://www.eets.ch/
|
||
|
|
#
|
||
|
|
# SPDX-License-Identifier: GPL-2.0+
|
||
|
|
#
|
||
|
|
|
||
|
|
Summary
|
||
|
|
=======
|
||
|
|
|
||
|
|
This document covers the PDU001 target.
|
||
|
|
|
||
|
|
Hardware
|
||
|
|
========
|
||
|
|
|
||
|
|
The PDU-001 (Processor and Display Unit) is a plugin card for 19" racks. It is
|
||
|
|
manufactured by EETS GmbH (https://www.eets.ch). The core of the board is a m2
|
||
|
|
SOM from bytes at work (https://www.bytesatwork.ch) which in turn is based on
|
||
|
|
AM3352 SOC from TI (http://www.ti.com).
|
||
|
|
|
||
|
|
Customization
|
||
|
|
=============
|
||
|
|
|
||
|
|
As usual the console serial interface is set by CONFIG_CONS_INDEX. Best choice
|
||
|
|
is 4 here since UART3 is wired to the connector K2.
|
||
|
|
The Run LED on the PDU-001 can be turned on red by setting CONFIG_RUN_LED_RED
|
||
|
|
or green by setting CONFIG_RUN_LED_GREEN. Setting CONFIG_RUN_LED_OFF will turn
|
||
|
|
off the Run LED.
|
||
|
|
|
||
|
|
Booting
|
||
|
|
=======
|
||
|
|
|
||
|
|
The system boots from either eMMC or SD card cage. It will first try to boot
|
||
|
|
from the SD card cage. If this fails (missing or unbootable SD card) it will
|
||
|
|
try to boot from the internal eMMC. The root file system is always expected to
|
||
|
|
be located in the second partition of the device (eMMC or SD card) that pro-
|
||
|
|
vided the boot loader.
|