Annotation of www/mvme88k.html, Revision 1.105
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14: <p>
15: <h2><font color="#e00000">OpenBSD/mvme88k</font></h2>
16:
17: <hr>
1.3 fn 18:
1.80 miod 19: OpenBSD/mvme88k is a port of OpenBSD to the systems built upon
20: Motorola's 88xxx-based VME motherboard family.
1.105 ! deraadt 21: <p>
1.95 miod 22:
1.98 miod 23: <strong>The OpenBSD/mvme88k port has been discontinued after the 5.5 release.</strong>
1.1 deraadt 24:
1.105 ! deraadt 25: <br clear=all>
! 26: <hr>
1.13 smurph 27:
1.29 miod 28: <a name="history"></a>
29: <h3><font color="#0000e0"><strong>History:</strong></font></h3>
1.13 smurph 30:
31: <p>
1.16 smurph 32: The Motorola 88k processor is said to be the best RISC processor ever
1.17 deraadt 33: devised. Its simplicity and elegance combine to make the mvme88k a
1.89 miod 34: hearty, robust platform.
1.29 miod 35:
1.13 smurph 36: <p>
1.89 miod 37: Unfortunately, the first generation designs (88100) made use of companion chips
38: for cache and virtual memory management, making hardware designs painfully
39: complex (and expensive, at that time). The second generation (88110) addressed
1.91 miod 40: this issue, but was plagued with reliability issues. Eventually, Motorola
1.89 miod 41: seized the opportunity to drop the 88000 line in favour of the PowerPC as soon
42: as possible, although some parts of the 88110 still exist in the PowerPC family
43: processors today.
44:
45: <p>
46: Nivas Madhur started the initial mvme88k port for the MVME187 card, building
47: upon the CMU Mach code running on the 88100-based Omron Luna88k systems.
48: However, he moved on to another employer before his work was ready to be
49: imported into the OpenBSD source tree.
50:
51: <p>
52: This integration work was completed by Dale Rahn, but he did not have enough
53: time to continue working on the port. Steve Murphree, Jr., stepped up, and
54: eventually completed the port to the MVME187 in November 1998.
1.13 smurph 55:
56: <p>
1.29 miod 57: Unfortunately, at the same time, a compiler upgrade from gcc 2.8.1 to
1.80 miod 58: egcs exposed a lot of problems in the mvme88k support in gcc, which
1.29 miod 59: could not be fixed in time for mvme88k to be a supported OpenBSD 2.5
60: release.
1.13 smurph 61:
62: <p>
1.29 miod 63: The lack of an in-tree toolchain did not prevent further work on the port,
64: and a lot of changes were made to the codebase, such as revamped autoconf
1.80 miod 65: and on-board SCSI driver, greatly expanded VME bus support, a working
66: install process that correctly creates a Motorola VID block on the disks,
1.29 miod 67: and support for MVME188 as well as improving support for MVME197.
1.13 smurph 68:
1.34 miod 69: <p>
70: During summer 2003, an effort to fix the toolchain eventually produced a
71: working gcc 2.95 compiler, and allowed the port to be self-hosting again.
1.54 miod 72: With the help of Mark Kettenis, the toolchain effort eventually produced
73: working binutils and gdb in late may 2004.
1.34 miod 74:
1.69 miod 75: <p>
76: Work towards multiprocessor support on the MVME188 boards started in
77: summer 2005 and, after a lot of tedious bugfixing, was eventually
78: completed shortly after the 4.2 release in november 2007.
79:
1.70 miod 80: <p>
81: The next step was getting the 88110-based MVME197 designs to work.
1.80 miod 82: Single-processor kernels started to run reliably in december 2007;
83: multiprocessor support was completed in march 2009, but kept triggering
84: obscure bugs which eventually got tracked down to a processor errata,
85: fixed for good in april 2010.
1.70 miod 86:
1.89 miod 87: <p>
88: The long-awaited switch from the a.out binary format to ELF happened after the
1.93 sthen 89: 5.3 release, with a compiler upgrade to gcc 3.3.6. This work paved the way
1.90 miod 90: for ELF shared libraries support.
1.89 miod 91:
1.29 miod 92: <hr>
93: <a name="status"></a>
94: <h3><font color="#0000e0"><strong>Current status:</strong></font></h3>
95:
1.13 smurph 96: <p>
1.96 miod 97: Currently, MVME181, MVME187, MVME188 and MVME197 boards, as well as similar
1.46 miod 98: designs, are booting multi-user, supporting most of the on-board devices.
1.39 david 99: There are still a few caveats; depending on your exact hardware setup,
100: your mileage may vary.
1.19 smurph 101:
1.13 smurph 102: <hr>
1.29 miod 103: <a name="hardware"></a>
104: <h3><font color="#0000e0"><strong>Supported hardware:</strong></font></h3>
1.13 smurph 105:
106: <p>
1.29 miod 107: <h4>Supported processor boards</h4>
1.13 smurph 108:
109: <p>
110: <ul>
1.96 miod 111: <li><strong>MVME180 <i>``Angelfire''</i> and MVME181</strong><br>
112: A low-cost, entry level board, featuring a single 88100 processor, two 88200
113: CMMUs and two on-board serial ports.<br>
1.35 miod 114: <li><strong>MVME187</strong><br>
115: A single 88100 processor-based version of the <a href="mvme68k.html">mvme68k</a>
1.36 miod 116: MVME167 and MVME177 boards. Features two 88200 CMMUs with 16KB cache
1.35 miod 117: each, SRAM, and on-board ethernet and SCSI controllers, as well as four serial
118: ports and one parallel port.<br>
1.55 miod 119: <li><strong>MVME188 and MVME188A</strong><br>
1.38 miod 120: Contrary to the other MVME processor boards, this board has no on-board
121: devices; it just acts as a container for an <i>HYPERmodule</i> which provides
1.69 miod 122: one, two or four 88100 processors, and two or four 88200 (16KB cache) or 88204
1.38 miod 123: (64KB cache) CMMUs per processor.<br>
1.55 miod 124: All HYPERmodules combinations are supported, but M88200 1P128 and 1P512 have
125: not been tested.<br>
1.38 miod 126: External cards specific to the MVME188 family provide memory and serial ports.
1.70 miod 127: <br>
1.75 miod 128: Multi-processor kernels are supported on these boards.
1.70 miod 129: <li><strong>MVME197LE</strong><br>
130: An entry-level design similar to the MVME187, but based on the 88110 processor
131: with integrated MMU and cache controller.<br>
132: <li><strong>MVME197SP and MVME197DP</strong><br>
133: Improved versions of the MVME197LE, with one (SP) or two (DP) 88110 processors,
134: and one 88410 external cache controller per processor.<br>
1.80 miod 135: Multi-processor kernels are supported on these boards.
1.13 smurph 136: </ul>
137:
1.29 miod 138: <p>
1.45 miod 139: Besides various Motorola complete systems (<strong>M8120</strong>,
1.76 miod 140: <strong>Series 900</strong>, etc), this port also runs on the
1.45 miod 141: MVME187-based <strong>Triton Dolphin System 100</strong>.
142:
143: <p>
1.29 miod 144: <h4>Supported on-board devices</h4>
1.13 smurph 145:
1.29 miod 146: <p>
1.13 smurph 147: <ul>
1.96 miod 148: <li><strong>MVME181</strong>
149: <ul>
150: <li>on-board serial ports (ttya-ttyb)
1.104 sthen 151: (<a href="http://man.openbsd.org/?query=dart&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">dart</a>)
1.96 miod 152: </ul>
153: </li>
1.70 miod 154: <li><strong>MVME187 and MVME197</strong>
1.13 smurph 155: <ul>
1.96 miod 156: <li>Cirrus Logic CL2400 serial ports (tty00-tty03/tty07<i>[M8120]</i>)
1.104 sthen 157: (<a href="http://man.openbsd.org/?query=cl&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">cl</a>)
1.45 miod 158: <li>Intel 82596CA Ethernet interface
1.104 sthen 159: (<a href="http://man.openbsd.org/?query=ie&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">ie</a>)
1.45 miod 160: <li>NCR53c710 SCSI Controller
1.104 sthen 161: (<a href="http://man.openbsd.org/?query=osiop&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">osiop</a>)
1.45 miod 162: <li>128KB SRAM (/dev/sram0)
163: <li>8KB NVRAM (/dev/nvram0)
1.13 smurph 164: </ul>
1.45 miod 165: </li>
166: <li><strong>MVME188</strong>
1.13 smurph 167: <ul>
1.96 miod 168: <li>serial ports on <i>SYSCON</i> board (ttya-ttyb)
1.104 sthen 169: (<a href="http://man.openbsd.org/?query=dart&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">dart</a>)
1.45 miod 170: <li>2KB NVRAM (/dev/nvram0)
1.13 smurph 171: </ul>
1.45 miod 172: </li>
1.29 miod 173: </ul>
1.13 smurph 174:
1.29 miod 175: <p>
1.45 miod 176: <h4>Supported VME boards</h4>
1.13 smurph 177:
1.29 miod 178: <p>
1.13 smurph 179: <ul>
1.77 miod 180: <li><strong>MVME327A</strong> SCSI and floppy Controller
1.104 sthen 181: (<a href="http://man.openbsd.org/?query=vsbic&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">vsbic</a>),
1.77 miod 182: currently limited to the SCSI interface
1.45 miod 183: <li><strong>MVME328</strong> High Performance SCSI Controller
1.104 sthen 184: (<a href="http://man.openbsd.org/?query=vs&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">vs</a>)
1.45 miod 185: <li><strong>MVME332XT</strong> High Performance Serial I/O Controller
1.42 miod 186: (8 serial ports, 1 parallel port) (vx)
1.45 miod 187: <li><strong>MVME376</strong> Ethernet Communications Controller
1.104 sthen 188: (<a href="http://man.openbsd.org/?query=le&manpath=OpenBSD+5.5&sektion=4&arch=mvme88k">le</a>)
1.33 miod 189: </ul>
190:
1.13 smurph 191: <hr>
1.29 miod 192: <a name="install"></a>
193: <h3><font color="#0000e0">
194: <strong>Getting and installing OpenBSD/mvme88k:</strong>
195: </font></h3>
196:
197: <p>
1.52 david 198: The latest supported OpenBSD/mvme88k release is
1.98 miod 199: <a href="55.html">OpenBSD 5.5</a>.
1.52 david 200: Here are the
1.98 miod 201: <a href="http://ftp.OpenBSD.org/pub/OpenBSD/5.5/mvme88k/INSTALL.mvme88k">
202: OpenBSD/mvme88k 5.5 installation instructions
1.52 david 203: </a>.
204:
1.3 fn 205: <hr>
1.30 miod 206: <a name="details"></a>
1.29 miod 207: <h3><font color="#0000e0"><strong>Hardware details:</strong></font></h3>
1.13 smurph 208:
1.14 smurph 209: <p>
1.29 miod 210: As VME hardware is quite uncommon in the average retail place, and Motorola
211: 881x0-based hardware is even more rare, this section is here to satisfy the
212: well-founded curiosity about the mvme88k hardware.
213:
1.48 miod 214: <p>
215: A comprehensive reference about the m88k processor and the various designs
1.99 miod 216: built upon has been gathered by Paul Weissmann at
217: <a href="http://www.3rz.org/mirrors/badabada.org/">badabada</a>.
1.48 miod 218:
1.52 david 219: <a name="pics"></a>
1.29 miod 220: <p>
221: Pictures of a Motorola 900 modular chassis, with a 33MHz MVME187 CPU board,
222: 32MB RAM, 4 MVME332XT serial boards, and an Archive 250MB QIC tape drive.
1.14 smurph 223: <ul>
1.29 miod 224: <li><a href="images/mvme187-1.jpg">MVME187 Series 900 (front view)</a>
1.14 smurph 225: <li><a href="images/mvme187-2.jpg">MVME187 Series 900 (rear view)</a>
226: <li><a href="images/mvme187-3.jpg">MVME187 Series 900 (rear view w/terminal)</a>
227: <li><a href="images/mvme187-4.jpg">MVME187 Series 900 (rear view close up)</a>
228: <li><a href="images/mvme188-2.jpg">MVME188 Dual proc board</a>
229: </ul>
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