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u-Boot
All commands in this section are in u-Boot and are supported on the Dell Networking S4810 and 4820T platforms only.
To access this mode, press any key when the following line appears on the console during a system boot.
Hit any key to stop autoboot:
Enter u-Boot immediately, as the => prompt indicates.
NOTE: This section describes only a few commands available in u-Boot. The commands included here are those commands
that are comparable to those commands found in Boot User mode on other S-Series systems.
NOTE: You cannot use the Tab key to complete commands in this mode.
Topics:
• printenv
• reset
• save
• setenv
printenv
Display the current system boot variable and other system settings.
Syntax
printenv
Command Modes uBoot
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.7.0 Introduced on the S4810.
Example
=> printenv
baudrate=9600
uboot_filesize=0x80000
bootfile=FTOS-SC-1.2.0.0E3.bin
bootcmd=echo Booting primary bootline....;$primary_boot;boot;echo
Failed;echo Booting secondary bootline....;$secondary_boot;boot;echo
Failed;echo Booting default bootline....;$default_boot;boot;echo
Failed;echo
Rebooting...;reset
bootdelay=5
loads_echo=1
rootpath=/opt/nfsroot
hostname=unknown
loadaddr=640000
ftpuser=force10
ftppasswd=force10
uboot=u-boot.bin
tftpflash=tftpboot $loadaddr $uboot; protect off 0xfff80000 +$filesize;
erase 0x
fff80000 +$filesize; cp.b $loadaddr 0xfff80000 $filesize; protect on
0xfff80000
+$filesize; cmp.b $loadaddr 0xfff80000 $filesize
60
1628 u-Boot