problem with: booting via TFTP Using NFS File System

Josef Kohler12818

I have a problem with booting via TFTP

printenv tells me that tftpserverip ist set to 150.100.7.240, witch is the ip of my host running ubuntu with NFS and TFTP server on it:

DM355 EVM # printenv
bootdelay=3
baudrate=115200
filesize=248448
fileaddr=82000000
ipaddr=150.100.7.137
nboot0x80700000=0 0x400000;bootm
nfshost=150.100.7.132
nfshost=150.100.7.240
rootpath=/home/praktikant/workdir/filesys
serverip=150.100.7.240
stdin=serial
stdout=serial
stderr=serial
videostd=pal
bootcmd=dhcp;bootm
bootargs=console=ttyS0,115200n8 noinitrd rw ip=dhcp root=/dev/nfs nfsroot=150.1l
bootfile=uImage

Environment size: 608/16380 bytes

but when I use the boot command, my evm is trying to boot from another IP address

DM355 EVM # boot
BOOTP broadcast 1
DHCP client bound to address 150.100.7.137
TFTP from server 150.100.7.3; our IP address is 150.100.7.137
Filename 'uImage'.
Load address: 0x80700000
Loading: T T

over 16 years ago

0 Juan Gonzales over 16 years ago

TI__Mastermind 37340 points

the problem here is that your bootcmd is using dhcp, hence the dhcp server in your router will try to get re-assign ip addresses and is failing to do a good job. To work-around this problem you have a few options

1) use static IPs (see http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=spraaq0 )

2) change router ( contains dhcp server) hardware

3) use 'tftpboot 0x80700000 uImage;bootm'' command to boot (instead of 'dhcp;bootm' )

0 Josef Kohler12818 over 16 years ago in reply to Juan Gonzales

Prodigy 140 points

thanks juan, this helped

0 Bernie Thompson TI over 16 years ago in reply to Josef Kohler12818

TI__Mastermind 41665 points

If you can get into the advanced settings of the DHCP server you can change the address it is trying to assign the TFTP boot to as an alternative, but if this is coming from an off the shelf consumer router often this functionality is not exposed, so as Juan suggests the easiest method is to use static IPs.

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problem with: booting via TFTP Using NFS File System