Introduction

DESCRIPTION

The Core4 kernel has a small 4kB configuration space. This space is used for configuration data that must be accessible very early in the startup process.

The kernel config is stored in non-volatile flash memory. A backup of the previous data is made whenever new values are written to the kernel config. Should writing of any new data fail, (e.g. due to a power failure), the previous values are reused. Error correcting codes are used to protect against flash chip failure.

Config data is organized in a tree of sections and values.

Sample view of a configuration in Core4Manager

Following is a list of Sections and Values which are understood by the Core4 System.

"c4s_general"

General configuration

"c4t_gen_development_mode": Used during software development with Core4Manager.
"c4t_gen_restrict_discovery": Allow access to configuration data only if debug jumper/DIP-Switch is on.
"c4t_gen_timezone": Name of timezone file.

"c4s_network"

Network configuration

"c4t_net_mode": How network configuration is obtained.
"c4t_net_ip": Static IP address
"c4t_net_netmask": Static netmask
"c4t_net_gw": Static default gateway
"c4t_net_boot_ip": Static IP address of TFTP boot server.
"c4t_net_boot_port": Static UDP Port number on TFTP boot server.
"c4t_net_boot_path": Static path of firmware file on TFTP boot server.

"c4s_serial"

Serial port configuration

"c4s_ser_ttyS0", "c4s_ser_ttyS1", ..., "c4s_ser_ttyS31"

Configuration for specific serial port.

"c4t_ser_speed": Serial port speed.

DESCRIPTION

CONTENTS

SEE ALSO