On Tuesday 06 October 2009 17:22:10 Wolfgang Denk wrote:
My concern was that we use __bss_start and _end to calculate the size of the bss to zero out. If the bss wraps, I'd be concerned about what gets cleared as _end would be truncated to a low memory address while __bss_start would be a high memory address. Or other similar problems - I didn't investigate what would really happen, I was just worried what could happen:)
So far U-Boot is actually a 32 bit boot loader; address calculations like this "just wrap around". So far this has not caused problems yet; what has caused problems is that we can have overlapping sections on 4xx. Also it's probably overkill that each board has it's own linker script.
I would like to see this fixed in this process. Maybe Stefan finds some spare cycles to address this.
Yes, the consolidation of the 4xx linker scripts is definitely something that should be worked on. Again, I'll put it on my to-do list. But I won't complain if somebody else sends some patches here. ;)
Cheers, Stefan
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