Appendix b, U-boot environment variables, In appendix b – SBE HighWire HW400c/2 User Manual

Page 103

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HighWire HW400c/2 User Reference Guide Rev 1.0

Appendix B

U-Boot Environment variables

n source boot and debug firmware. A

U-boo

.de/wiki/bin/view/DULG/Manual

Das U-boot was created by Wolfgang Denk as an ope
complete

t manual can be found at

http://www.denx

.

ndix i

s accessed by entering the

help

Note:

ands m

d'

ootd

- boot default, i.e., run 'bootcmd'

bootm

- boot application image from memory

bootp

- boot image via network using BootP/TFTP protocol

cmp

- memory compare

coninfo

- print console devices and information

cp

- memory copy

cpld

- Microwire EEPROM Access Subsystem

crc32

- checksum calculation

dcache

- enable or disable data cache

docload

- load boot image from disk-on-chip

echo

- echo args to console

eeprom

- EEPROM sub-system

erase

- erase FLASH memory

flinfo

- print FLASH memory information

fsinfo

- print information about filesystems

fsload

- load binary file from a filesystem image

go

- start application at address 'addr'

help

- print online help

icache

- enable or disable instruction cache

icrc32

- checksum calculation

iloop

- infinite loop on address range

imd

- i2c memory display

iminfo

- print header information for application image

imls

- list all images found in flash

imm

- i2c memory modify (auto-incrementing)

imw

- memory write (fill)

inm

- memory modify (constant address)

iprobe

- probe to discover valid I2C chip addresses

itest

- return true/false on integer compare

loadb

- load binary file over serial line (kermit mode)

loads

- load S-Record file over serial line

loop

- infinite loop on address range

ls

- list files in a directory (default /)

md

- memory display

mm

- memory modify (auto-incrementing)

This appe

s a brief list of known U-boot environment variable

command

or ? at the debug prompt.

Some comm

ay not work on the SBE HW400c/2.

?

- alias for 'help'

askenv

- get environment variables from stdin

autoscr

- run script from memory

base

- print or set address offset

bdinfo

- print Board Info structure

boot

- boot default, i.e., run 'bootcm

b

October 10, 2006

Copyright 2006, SBE, Inc.

Page

91

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