RTM-ATCA-SXXX Overview

 

 

U-boot command syntax

description

 

 

 

and lost if the system is re-booted.

ping <IP address>

Sends an icmp echo address to the designated IP address

 

(entered in dotted decimal format)

reset

Perform soft reset of the ATCA cpu, forcing a system

 

reboot.

run <variable_name>

Run a sequence of commands defined in the

 

environment <variable_name>, for example:

 

uboot=> run flashboot

version

Displays the version and build date of the U-boot image

 

running on ATCA blade.

3.6.3U-boot environment variables

Administrators may display the full list of environment variables using the printenv command. U-boot includes the following environment variables with pre-assigned factory default settings.

 

Table 9 U-boot environment variables shown with printenv

 

 

 

Variable name

Default value

Description

bootcmd

run flashboot

This variable defines a command string that is

 

 

automatically executed when the initial bootdelay

 

 

countdown is not interrupted.

 

 

 

flashboot

 

A sequence of commands, set at manufacturing time.

 

 

If in the U-boot console, use run flashboot to boot the

 

 

ATCA using the images contained in flash. This command

 

 

sequence is executed automatically by bootcmd in a

 

 

normal power-up.

 

 

 

ramboot

 

A sequence of commands, set at manufacturing time.

 

 

If in the U-boot console, use run ramboot to boot the

 

 

ATCA from the serverip node.

 

 

 

nfsboot

 

A series of startup commands, set at manufacturing time.

 

 

RESERVED for future use.

bootdelay

5

U-boot will wait this number of seconds before it executes

 

 

the bootcmd variable. After reset, a countdown message

 

 

is printed to the serial console. Pressing any key will

 

 

interrupt normal boot and display the U-boot console

 

 

prompt.

 

 

Value 0 =boot without delay.

 

 

Value -1 = disable autoboot, always enter U-boot console

 

 

 

baudrate

115200

RS232 Serial port baud rate, default=115200 (decimal)

 

 

(Max: 115200)

loads_echo

1

If set to 1, all characters received during a serial download

 

 

(using the loads command) are echoed to the serial

 

 

console.

 

 

 

rootpath

/nfsroot

RESERVED for future use.

hostname

 

Not used

6806800H62B ATCA‐S201 Installation and Use Guide

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Emerson ATCA-S201 manual Uboot= run flashboot, Boot environment variables shown with printenv