In message 024c01c78381$d7866f00$01c4af0a@Glamdring you wrote:
U-Boot has a number of network parameters like
CONFIG_HOSTNAME CONFIG_IPADDR CONFIG_GATEWAYIP CONFIG_NETMASK etc.
While these can be defined in an "include/configs/<board>.h", it would be nice to be able to define this in a separate file since they are really not board specific.
Actually these parameters (and more, like MAC addresses) should *never* be set at all in the U-Boot configuration. They exist for (1) hysterical reasons I'm not going to explain, and (2) because some (paying!) customer insisted on having such a feature.
Why should you care if the customer sets a configuration value at compile time or dynamically? By setting things at compile time, you allow the board to boot up, download a script which gets executed by "autoscr" This script will sets the REAL values for the network. Obviously the values should only be used until manually changed.
I.E: if you do
setenv ipaddr 10.10.10.10
then this should override the CONFIG_IPADDR value.
Not sure, if this is your problem.
Normally, you should use other methods to customize your system - the U-Boot binary image for a board should always be independent of such settings.
Assume you have no serial communication available... How do you reconfigure the system?
Can you explain how to download the environment using the network if you are not allowed to compile in the network parameters?
There are other, better ways to implement what you want to do. For example, you can put such information in a separate location in flashand make U-Boot to auto-initialize these variable from these default settings in case the environment does not contain any other settings yet, etc.
I think that U-Boot needs to test the environment to see if it is valid or not, and only use these values if environment is invalid. I do not think that I need to have it in a separate area. Incidently, if the initial value is in a separate segment, then you can overwrite this later with other values.
Best Regards Ulf Samuelsson ulf@atmel.com Atmel Nordic AB Mail: Box 2033, 174 02 Sundbyberg, Sweden Visit: Kavallerivägen 24, 174 58 Sundbyberg, Sweden Phone +46 (8) 441 54 22 Fax +46 (8) 441 54 29 GSM +46 (706) 22 44 57
Technical support when I am not available: AT89 C51 Applications Group: mailto:micro.hotline@nto.atmel.com AT90 AVR Applications Group: mailto:avr@atmel.com AT91 ARM Applications Group: mailto:at91support@atmel.com FPSLIC Application Group: mailto:fpslic@atmel.com Best AVR link: www.avrfreaks.net