Matthew,
First, you will get much more response on this list if you *do not* post HTML or other formats to this list. Please use plain text only. It takes more time that I have to reformat a proper reply :)
There are a number of issues with the code snippet you pointed out.
#ifdef DEBUG lis r4, CFG_SDRAM_BASE@h /* Source Address */ ori r4, r4, CFG_SDRAM_BASE@l #else
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First, if one really wants to do this, the label DEBUG is mis-named. It should be
#ifdef BOOT_IMAGE_FROM_RAM or something like that. This is simply the address where the ppcboot image is located before it is copied to RAM.
Second, this is *very* old code and broken. As others have pointed out repeatedly on this list, if you have a flash burning tool such as the BDI-2000 and it is properly configured to use a workspace to speed up the flash burning process, it is just as fast to burn a new image into flash and test it, rather than to do all the detail work to get a U-Boot image to boot from RAM. I've used both methods, but I am now convinced that booting from RAM isn't worth the trouble.
My suggestion: submit a patch with these four lines deleted from the file. It's broken code anyway.
-Chris Hallinan DS4.COM, Inc.
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