Hi,
Have you successfully booted with two single-file images?
yes.
I have found (after much agony) that booting the 2.6 kernel from U-Boot requires modification of the kernel code in order for it to be able to read an initrd image from flash (there is an old patch floating around for the 2.4 kernel somewhere). Personally i decided against this, and experimented with copying the rom image into ram.
To boot single-file images I applied a patch released by Russell King to load the ramdisk image directly from a MTD partition. The kernel is 2.6.x-ep93xx. You can find more information and the sources here: http://members.inode.at/m.burian/ep93xx/index.html.
Copying from rom to ram will work, as long as the image file is a raw gzip file (not created with mkimage), as the kernel doesn't seem to understand anything else. If there is a command to manually uncompress an image file into ram i am not aware of it.
We use this technique with our ARM7-based platforms.
Thanks for your help,
llandre
DAVE Electronics System House - R&D Department web: http://www.dave-tech.it email: r&d2@dave-tech.it