In message 5.1.1.6.2.20030620153323.0131d640@corelis.com you wrote:
I understood/assumed 128k is for u-boot only.
Right. It boots over the net.
The idea is to ship the product with small flash which is large enough hold u-boot only.
This is OK, works fine in many systems :-)
It won't be practical (support nightmare!) for us to ask our customers to setup a tftp server in order to use our product.
What's so complicated about this? See for example how Abatron ships their BDI2000s - they include a free TFTP server on their floppy disks which is so simple that even a Windoze user can start it.
However, if the boot loader is capable of receiving the OS image over the network, our PC side application can upload the OS and Ram disk image to our custom board the first time it connects to it.
Is this not a good idea?
No, it is not. You are trying to re-invent the wheel.
Best regards,
Wolfgang Denk