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From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Sun, 23 May 2010 02:18:40 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/powerpc/aim ofw_machdep.c
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nwhitehorn    2010-05-23 02:18:40 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/powerpc/aim      ofw_machdep.c 
  Log:
  SVN rev 208427 on 2010-05-23 02:18:40Z by nwhitehorn
  
  MFC r208152,208172:
  
  On PowerMac11,2 and (presumably) PowerMac12,1, we need to quiesce the
  firmware in order to take over control of the SMU. Without doing this,
  the firmware background process doing fan control will run amok as we
  take over the system and crash the management chip.
  
  This is limited to these two machines because our kernel is heavily
  dependent on firmware accesses, and so quiescing firmware can cause
  nasty problems.
  
  Revision  Changes    Path
  1.24.2.3  +40 -0     src/sys/powerpc/aim/ofw_machdep.c