Dear Simon Glass,
In message 1302642840-6958-5-git-send-email-sjg@chromium.org you wrote:
In many environments the DHCP server (which provides IP addresses) is not under control of the individual engineer. While it is required in order to connect to the corporate network, it doesn't provide useful information for booting. For example, it may be set up for PC imaging and provide a bootfile and tftp server for pxelinux.
To deal with this, this commit provides for a separate tftpserverip environment variable. If this is defined, then this IP address is used in preference to serverip. A new CONFIG_BOOTP_IGNORE_BOOTFILE option is provided to indicate that any bootfile name returned by the DHCP server is bogus and should be ignored.
Why don't you simply re-assing another value to "serverip" before doing any TFTP transfers?
This can be done with trivial scripting, without any code changes.
To use this feature, just setenv tftpserverip to the address of your TFTP server and define CONFIG_BOOTP_IGNORE_BOOTFILE in your board file.
Why don't you simply set the "autoload" environment variable to "no"? This is the documented way to do exactly this.
Sorry, but I see no use for this patch.
NAK.
Best regards,
Wolfgang Denk