Wolfgang Denk wrote:
First, I start U-Boot from flash memory, located at 0xff800000. After it runs, I load the kernel multi-image to RAM, which is located from 0x00000000 to 0x007fefff, at address 0x00600000.
Do you really have less than 8 MB of RAM? You will have hard times of getting Linux to run...
Bollocks.
A 2.4 kernel + RAM disk will run nicely in 4 MB of RAM, you can cut that to 2 MB if you go the XIP route. It's no "harder" than setting it up on a board with >= 8 MB, other than the fact that you need to be judicious about what's included in your kernel and image.
Using the 'imi 0x00600000'-command, i get the output:
=> imi 0x00600000
0x00600000 = 6 MB... Try a higher load address (assuming you have enough RAM).
Not much higher he can go. Assuming the exact same image, a base of 0x006D0000 would put the end of the image at 0x007FE36E, just barely within limits.
What could be the problem? I calculated the sizes and i am _nearly_ sure, that nothing is overwritten.
I'm not. Get more RAM.
How large is your uncompressed RAM disk image? Trying to uncompress a 16 MB image into 8 MB of RAM is a BadThing(tm)...
-Cory