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OpenBSD 3.0 was the first official release of OpenBSD/sparc64, and since that release support for many more devices has been added (including ! devices required for X11R6 support) and bugs exposed by the 64 bit big endian ! nature of UltraSPARC in many obscure places have been fixed.

Sun refused access to the neccessary documentation for the (very bizzare) ! host bridge in the UltraSPARC III machines, so a few years were lost before ! some reverse engineering figured out the changes in these machines. ! OpenBSD 4.0 has thus been the first release to ship with support for the UltraSPARC III based machines.

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OpenBSD 3.0 was the first official release of OpenBSD/sparc64, and since that release support for many more devices has been added (including ! devices required for X11R6 support). The rest of the architectures that ! OpenBSD supports have benefitted because some kinds of bugs are ! exposed more often by the 64-bit big endian nature of UltraSPARC.

Sun refused access to the neccessary documentation for the (very bizzare) ! host bridge and caches in the UltraSPARC III machines, so a few years were ! lost before some reverse engineering figured out the changes in these ! machines (and the undocumented processor bugs, too). In 2007, Sun ! was finally convinced to release the missing ! information, and development progress became more rapid. ! !

! OpenBSD 4.0 was the first release to ship with support for the UltraSPARC III based machines.

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  • Fix BE64 issues in the userland as they are discovered
  • Improve architecture specific documentation
  • Provide accelerated X servers for the cgsix and creator frame buffers +
  • Fix the CDROM interrupt spin that some machines see. +
  • Fix the vga / schizo crashes that occur on some machines.
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    Hardware documentation:

    - This list has been originally posted by Marcus Watts to the sparc mailing list. -

    -

    -

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    Hardware documentation:

    + Previous to 2007, it was extremely difficult or impossible to get much of + the neccessary hardware documentation for these machines. Members of our + team (in particular David Gwynne) were instrumental in pressuring and + convincing Sun to go back into their archives and dig up the data sheets + that they had written in-house, describing the operation of their chips to + their own engineers. These documents can now be found at + + http://wikis.sun.com/display/FOSSdocs/Home. + Some documents are still missing at that site, so we ask that interested + developers contact Sun and request additional information.


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    www@openbsd.org
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    www@openbsd.org
    ! $OpenBSD: sparc64.html,v 1.260 2008/03/13 07:05:49 deraadt Exp $