u-boot/board/eets/pdu001
Tom Rini 6f6b7cfa89 Convert all of CONFIG_CONS_INDEX to Kconfig
This converts the following to Kconfig:
   CONFIG_CONS_INDEX

We have existing entries for this option in a number of places, with
different guards on them.  They're also sometimes used for things not
directly inside of the serial driver.  First, introduce a new symbol to
guard the use of CONFIG_CONS_INDEX, so that in the case where we don't
need this for the serial driver, but for some other use, we can still do
it.  Next, consolidate all of these into the single entry in
drivers/serial/Kconfig.  Finally, introduce CONS_INDEX_[023456] so that
we can imply a correct value here to make the defconfig side of this
smaller.

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Rework a lot of the logic here, such that I took authorship from
Adam, but kept his S-o-B line]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-03-16 10:28:52 -04:00
..
board.c arm: add support for PDU001 2018-01-28 12:27:32 -05:00
board.h arm: add support for PDU001 2018-01-28 12:27:32 -05:00
Kconfig Convert all of CONFIG_CONS_INDEX to Kconfig 2018-03-16 10:28:52 -04:00
MAINTAINERS arm: add support for PDU001 2018-01-28 12:27:32 -05:00
Makefile arm: add support for PDU001 2018-01-28 12:27:32 -05:00
mux.c arm: add support for PDU001 2018-01-28 12:27:32 -05:00
README arm: add support for PDU001 2018-01-28 12:27:32 -05:00

# 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.