https://bugzilla.kernel.org/show_bug.cgi?id=47981
Bjorn Helgaas <bhelg...@google.com> changed:
What |Removed |Added
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CC| |bhelg...@google.com
--- Comment #28 from Bjorn Helgaas <bhelg...@google.com> 2012-10-11 16:44:26
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Wow, this is the worst AML parsing train wreck I've ever seen. iasl won't
disassemble the DSDT at all.
But on the other hand, Linux parsed enough to find 13 PNPACPI device with
plausible resources, and there's a PNP0A08 device (though we didn't get valid
_CRS resources for it).
What's the normal OS that ships on this box? Googling suggests maybe
"SecurePlatform" or "GAiA" and that they may be Linux-based. Any clue whether
that OS consumes the AML? Any way to get a dmesg log from those to see if it
shows the same AML parsing issues?
Here are the possibilities I see:
1) Use a patch like Feng's to tiptoe around this issue. But there are likely
other similar issues waiting to be discovered.
2) Turn off ACPI on this platform altogether. Seems like a big hammer.
3) Try to figure out if there's some small ACPICA tweak that would make the
AML intelligible.
3) seems like a nice choice, but I don't have time to do it myself. And I'm a
little dubious, given that the shipping software seems to be based on Linux,
but the long list of copyright owners, trademarks, etc., in the datasheet[1]
doesn't mention Linux, the GPL, or where to get the source. That doesn't give
me warm fuzzies about putting effort into this.
[1] http://www.checkpoint.com/products/downloads/secureplatform_datasheet.pdf
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