[coreboot] [PATCH] Promote heap sizing to first-class Kconfig citizenship.

Myles Watson mylesgw at gmail.com
Fri May 21 18:10:51 CEST 2010

On Fri, May 14, 2010 at 1:49 PM, Joe Korty <joe.korty at ccur.com> wrote:
> Some background:
> The reason I'm looking at coreboot is that standard BIOSes
> (apparently) run out of memory while doing the bus walk,
> when I plug a PCI-e expansion chassis into the motherboard
> and populate it.  The BIOS will either lock up or the OS
> will boot but what the OS sees for a PCI Bus (via lspci
> -tv) is clearly corrupt.
> So my job was/is to do an experiment to see if our problems
> are indeed due to out-of-memory issues in standard BIOSes, and
> if so, if coreboot could be a useful way around this issue.
> And indeed, the first time I booted coreboot with a
> populated PCI-e chassis attached, I got an out-of-memory
> halt from coreboot.  Increasing CONFIG_HEAP_SIZE to
> 0x10000 (ie, 4x) got the system to boot, and lspci -tv
> looks good also.  I have yet to try intermediate values.

Could you try the latest?  Devices now take ~ 1/4 the space that they
used to take.

> Unfortunately we have an even bigger PCI-e loaded expansion
> chassis (configuration #2), for which coreboot also hangs.
> It's not an out-of-memory hang; it happens (apparently)
> during the bus walk.  I haven't looked into this hang in
> detail yet, so I don't have much to report.  But I do fear
> it may be something more fundamental.

If you send the log to the list we might be able to help.


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