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3.5
Configuration files
This section describes the MPS3 board configuration files on the configuration microSD card that control
the board powerup and configuration process.
This section contains the following subsections:
•
3.5.1 Overview of configuration files and microSD card directory structure on page
•
3.5.2 config.txt generic board configuration file on page
•
3.5.3 Contents of the MB directory on page
•
3.5.4 Contents of the SOFTWARE directory on page
3.5.1
Overview of configuration files and microSD card directory structure
The configuration microSD card on the MPS3 board contains configuration files that control the board
powerup and configuration process.
Because the board microSD card is non-volatile memory, it is only necessary to load new configuration
files if you change the system configuration. The microSD card that is supplied with the MPS3 board
contains default configuration files.
If you connect a workstation to the debug USB port, the microSD card appears as a USB Mass Storage
Device (USBMSD). You can then add, edit, or delete files.
You can use a standard text editor that produces DOS line endings to read and edit the board
configuration files.
The following figure shows a typical example of the directory structure on the microSD card memory.
File names and directory names are in 8.3 format:
•
File names that you generate must be in lowercase.
•
Directory names must be in uppercase.
•
All configuration files must use DOS line endings (
The directory structure and file name format ensure that each image is matched to the correct target
device defined in the board configuration EEPROM:
config.txt
100765_0000_04_en
Caution
file
Generic configuration file for all boards. This file applies to all Arm Versatile
Express motherboards as well as the MPS3 board. Some settings are specific to the
MPS3 board.
Copyright © 2017–2020 Arm Limited or its affiliates. All rights
3-64.
3-64.
3-66.
Figure 3-3 Example USBMSD directory structure
/
0x0D
0x0A
reserved.
Non-Confidential
3.5 Configuration files
3-63.
V2MMPS3(F:)
config.txt
LOG.TXT
MB/
HBI0309B/
mbb_v???.ebf
board.txt
AN???
an???_v?.bit
an???_v?.txt
images.txt
SOFTWARE/
dm_v???.axf
st_v???.axf
).
3 Configuration
3-63
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