How to load and run kernel from sdram
From RidgeRun Developer Connection
When testing a new kernel configuration, it can be helpful to not always save the kernel to flash; instead simply load and run from SDRAM. You can do this manually by entering the u-boot commands shown below.
Configuring the kernel
Using a RidgeRun SDK, you can configure the kernel via
make -C $DEVDIR config
which launches the SDK configuration tool. Select kernel from the main menu and adjust the kernel settings as needed.
Building the kernel image
Using a RidgeRun SDK, you can build the new kernel image via
make -C $DEVDIR kernel
This will automatically copy the new kernel image to /srv/tftp on your desktop computer. You can see the file name being used
ls -ltr /srv/tftp
The filename will be something like kernel.uImage.tfischer.overo.
Configuring uboot to auto-load / auto-boot using tftp
Adjust the follow u-boot commands to match your host computer IP address and /srv/tftp kernel filename.
setenv autoload no dhcp setenv autorun no tftp