Dear Adam Moskowitz,
In message 20100610173438.GA25105@cakewalk.menlo.com you wrote:
Here's my situation . . . We have a custom PPC-based board that currently boots from a kernel in the on-board flash and the root fs mounted via NFS. My project is to move the root fs into flash; to test that -- mainly to save time and write cycles on the flash -- I'm trying to do my debugging by pulling the root fs into RAM using TFTP then boot from that. of course, it's not working.
Here's a summary of how I got this far: I created a file with dd, formatted it with mke2fs, mounted it (-o loop), copied in a known working root fs), unmounted, gzipped, then ran mkimage as follows:
Do you know the root file system builder RFSB? See http://git.denx.de/?p=rfsb.git;a=summary
U-Boot 1.1.4 (May 20 2008 - 16:49:25)
This is a very old version. It does not have any device tree support. Consider updating.
=> setenv bootargs console=ttl0,19200,root=/dev/ram,load_ramdisk=1
You must not use commas to separate arguments; This should be
setenv bootargs 'console=ttl0,19200 root=/dev/ram load_ramdisk=1'
Please RTFM!
The system uncompresses and recognizes the kernel and the rootfs, but fails because for some reason, it's trying to load the root fs via NFS, even though I thought I told it not to do that.
You did not pass a root= argument - this was part of the console= argument and ignored.
Best regards,
Wolfgang Denk