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- # 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.
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