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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Sat, 30 Mar 2002 15:25:22 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/ia64/ia64 locore.s machdep.c
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marcel      2002/03/30 15:25:22 PST

  Modified files:
    sys/ia64/ia64        locore.s machdep.c 
  Log:
  Transition to a model where the loader passes the address of the
  bootinfo block in register r8. In locore.s we save the address
  in the global variable 'pa_bootinfo'. In machdep.c we compare
  this value against the hardwired address, but don't depend on its
  validity yet (ie: we still expect the bootinfo block to be at the
  hardwired address). After a small amount of time, we'll flip the
  switch and depend on the loader to pass us the address. From that
  moment on the loader is free to put it anywhere it likes, provided
  the machine itself likes it as well.
  
  Add some verbosity to aid in the transition. We emit a message if
  the loader didn't pass the address and we also emit a message if
  there's no bootinfo block at the hardwired address.
  
  While in locore.s, reduce the number of redundant serialization
  instructions. A srlz.i is a proper superset of a srlz.d and thus
  is a valid replacement. Also slightly reorder the movl instructions
  to improve bundle density.
  
  Revision  Changes    Path
  1.23      +14 -14    src/sys/ia64/ia64/locore.s
  1.85      +31 -4     src/sys/ia64/ia64/machdep.c

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