1995-10-08 05:05:46 +03:00
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Before you start you might need to consider your disk configuration
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to sort out a quirk in SCSI-ID to SD-UNIT mapping that exists on
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Sun Sparcstations.
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Upon leaving the factory, SunOS and the OpenBOOT ROM map according to
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this table:
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SCSI-ID -> SunOS SD-UNIT
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0 sd3
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1 sd1
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2 sd2
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3 sd0
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4 sd4
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5 sd5
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6 sd6
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Unlike SunOS and the OpenBOOT ROM, a generic NetBSD kernel numbers
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scsi drives sequentially as it finds them. The drive with the
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lowest scsi-id will be called sd0, the next one sd1, etc.
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To ease the installation process, the default NetBSD kernel in the
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distribution is setup to match the Sun mapping above by hard-wiring
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scsi-id#3 to sd0 and scsi-id#0 to sd3. The remaining drives will be
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dynamically mapped to other sd* numbers.
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A truely generic NetBSD kernel is also provided as `/netbsd.GENERIC',
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which will do the standard NetBSD probe ordering. If your configuration
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differs from the default Sun setup, you can try to use this kernel to
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complete the installation.
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NOTE: this is also a concern when you start building your own customised
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kernels.
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Your OpenBOOT ROM may need some setup. make sure you boot from `new
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command mode'. If your machine comes up and gives you a `>' prompt
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instead of `ok', type:
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>n
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ok setenv sunmon-compat? false
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ok
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1996-11-24 00:39:23 +03:00
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This is needed because the NetBSD kernel relies on functionality provided
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by OpenBOOT ROMs -- the ability to pass down Forth commands and have them
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executed in the ROM -- that appears to go away when the OpenBOOT ROM
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operates in `old monitor compatibility' mode.
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1995-10-08 05:05:46 +03:00
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Also, you cannot use the security modes of the sparc OpenBOOT ROM.
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ok setenv security-mode none
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1996-10-09 04:13:36 +04:00
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If you're installing NetBSD/sparc for the first time it's a good idea
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to look at the partition sizes of disk you intend installing NetBSD on.
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Asumming a classic partition scheme with root (`/') and /usr filesystems,
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a comfortable size for the NetBSD root filesystem partition is about 20MB;
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a good initial size for the swap partition is twice the amount of physical
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memory in your machine (though, unlike SunOS 4.x, there are no restrictions
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on the size of the swap partition that would render part of your memory
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unusable). A full binary installation takes about 60MB in `/usr'.
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Some network devices (`le') allow a choice between operating on a UTP
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or a AUI port. Automatic detection of which port is actually connected to
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the wire is not yet fully implemented in this release. This means that
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you may have to specify a `link-layer directive' during the installation
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process. The magic is `link0' to force the use of the UTP port, and `link1'
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to force the use of the AUI port.
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