Dear Rick,
In message 016501cd5088$7e212c50$7a6384f0$@edu you wrote:
My original thought was to write a script using environmental variables. The script would look for a mImage on a server and load it if it is there. If we don't want to load an experimental linux/rootfs mImage, we would simply do not have the file present on the server, and the script would proceed to the next command having not found the file on the server. However, when it gets to that point in the code, it continues to retry over and over, and never gets past the 'File not Found' error.
It would help if you provide at least a tiny bit of information about your system, like which architecture / SoC // board you are using, and especially which exact version of U-Boot you are talking about.
The thing is, I cannot reproduce the behaviour you report.
Test on "canyonlands" (PPC):
=> tftp 400000 foo/bar Waiting for PHY auto negotiation to complete... done ENET Speed is 1000 Mbps - FULL duplex connection (EMAC0) Using ppc_4xx_eth0 device TFTP from server 192.168.1.1; our IP address is 192.168.100.6 Filename 'foo/bar'. Load address: 0x400000 Loading: T TFTP error: 'File not found' (1) Not retrying... =>
Test on "TQM5200" (PPC):
=> tftp 400000 foo/bar Using FEC device TFTP from server 192.168.1.1; our IP address is 192.168.160.4 Filename 'foo/bar'. Load address: 0x400000 Loading: * TFTP error: 'File not found' (1) Not retrying... =>
Test on m28evk (ARM):
=> tftp 42000000 foo/bar Using FEC0 device TFTP from server 192.168.1.1; our IP address is 192.168.20.33 Filename 'foo/bar'. Load address: 0x42000000 Loading: * TFTP error: 'File not found' (1) Not retrying... =>
Best regards,
Wolfgang Denk