Add ramdisk support for pmax; untested but compiles

6 files changed, 213 insertions, 1 deletions

diff --git a/etc/etc.pmax/MAKEDEV b/etc/etc.pmax/MAKEDEV
index 9c4ad645e8e..25e8ac91da8 100644
--- a/etc/etc.pmax/MAKEDEV
+++ b/etc/etc.pmax/MAKEDEV
@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: MAKEDEV,v 1.26 1998/10/15 21:24:53 art Exp $
+#	$OpenBSD: MAKEDEV,v 1.27 1998/11/09 05:39:59 millert Exp $
 #	@(#)MAKEDEV	8.1 (Berkeley) 6/9/93
 #
 
@@ -119,6 +119,11 @@ all)
 	sh $this fb0 fb1 fb2
        ;;
 
+raminst)
+	sh $this std
+	sh $this rz0 rz1 rz2 rz3 rz4 tz0 tz1 rd0 pty0
+	sh $this fb0 fb1 fb2
+
 std)
 	mknod console		c 0 0
 	mknod drum		c 1 0	; chmod 640 drum ; chown root.kmem drum
@@ -291,6 +296,17 @@ vnd*)
 	umask 77
 	;;
 
+rd*)
+	umask 2 ; unit=`expr $i : '.*d\(.*\)'`
+	mknod rd${unit}a b 25 `expr $unit '*' 16 + 0`
+	mknod rd${unit}c b 25 `expr $unit '*' 16 + 2`
+	mknod rrd${unit}a c 92 `expr $unit '*' 16 + 0`
+	mknod rrd${unit}c c 92 `expr $unit '*' 16 + 2`
+	chown root.operator rd${unit}[ac] rrd${unit}[ac]
+	chmod 640 rd${unit}[ac] rrd${unit}[ac]
+	umask 77
+	;;
+
 dc*)
 	unit=`expr $i : 'dc\(.*\)'`
 	case $unit in
diff --git a/etc/etc.pmax/disktab b/etc/etc.pmax/disktab
index 4ea8bfc4b17..0ef1cb85ca0 100644
--- a/etc/etc.pmax/disktab
+++ b/etc/etc.pmax/disktab
@@ -37,6 +37,11 @@
 # four times `a' while `c' is always the entire disk. The
 # sum of `d', `e', and `f' is equal to `g' which is everything else.
 
+rdroot|ramdiskroot|RAM-disk root FS image:\
+	:ty=simulated:se#512:nc#24:nt#2:ns#128:\
+	:ta=4.2BSD:oa#0:pa#6144:fa#512:ba#4096\
+	:ob#0:pb#0:oc#0:pc#6144:
+
 simpleroot:\
 	:ty=winchester:\
 	:dt=SCSI:\
diff --git a/sys/arch/pmax/conf/RAMDISK b/sys/arch/pmax/conf/RAMDISK
new file mode 100644
index 00000000000..b814e117215
--- /dev/null
+++ b/sys/arch/pmax/conf/RAMDISK
@@ -0,0 +1,98 @@
+#
+# RAMDISK kernel for the distribition ramdisk
+#
+
+machine		pmax mips		# machine type and subtype
+
+# generic mips support
+option		CPU_R3000		# R2000/R3000 support
+option		MIPS1			# R2000/R3000 support
+# support for specific models of decstation
+option	 	DS3100			# PMAX (kn01) decstation 2100, 3100
+option	 	DS5000_25		# MAXINE (kn02ca/xine)
+option	 	DS5000_100		# 3MIN (kn02ba/kmin)
+option	 	DS5000_200		# 3MAX (kn02)
+option	 	DS5000_240		# 3MAXPLUS (kn03)
+# timezone stuff
+option		TIMEZONE=0
+option		DST=0			# use daylight savings rules
+
+maxusers	4
+
+# standard system options
+option		SWAPPAGER		# swap pager (anonymous and swap space)
+option		VNODEPAGER		# vnode pager (mapped files)
+option		DEVPAGER		# device pager (mapped devices)
+# the usual stuff
+option		NATIVE_ELF		# elf is our native binary format
+# the usual filesystems
+option		FFS			# fast filesystem
+option		FIFO			# posix fifo support
+option		CD9660			# iso9660 cdrom filesystem
+option		MSDOSFS			# msdos filesystem
+option		KERNFS			# kernel data-structure filesystem
+# networking
+option		INET			# the networking stuff
+option		NFSCLIENT		# nfs client code
+
+option		RAMDISK_HOOKS
+option		MINIROOTSIZE=6144	# 3meg ramdisk
+
+config		bsd	root on rd0a swap on rd0b
+
+mainbus0	at root
+cpu*		at mainbus0
+# turbochannel bus
+tc*		at mainbus0		# all but PMAXes have a turbochannel
+cfb0		at tc?			# framebuffer (color)
+mfb0		at tc?			# framebuffer (mono)
+sfb0		at tc?
+le0		at tc?			# decstation 5000/200 baseboard 
+le*		at tc?			# other lance network interfaces
+# ioasic standard baseboard options (5000/2x, 5000/1xx, 5000/2[46]0)
+ioasic0         at tc?
+clock0          at ioasic? offset?	# rtc
+asc0            at ioasic? offset?	# system scsi subslot
+scc0		at ioasic? offset?
+le0		at ioasic? offset?	# tc onboard lance
+scc1		at ioasic? offset?	# not present on maxine
+# MAXINE-only ioasic baseboard devices and on-baseboard "options"
+xcfb0		at tc?			# tc framebuffer "option"
+dtop0		at ioasic0 offset?	# destop bus,  lk501 kbd,  mouse
+# 5000/200-only (aka 3MAX aka KN02) baseboard devices (tc but no ioasic)
+clock0		at mainbus0		# rtc
+dc0		at mainbus0
+le0		at tc?			# tc ether "option" on baseboard
+asc0		at tc?			# tc scsi  "option" on baseboard
+# for now, pretend this machine has an ioasic
+dc0		at ioasic? offset? 	# dc7083 four-port dz device
+# 2100/3100-only (aka PMAX aka KN01) baseboard devices.
+clock0		at mainbus0		# rtc
+pm0		at mainbus0		# 3100 onboard fb
+dc0		at mainbus0		# dc7083 four-port dz device
+le*		at mainbus0		# 3100 onboard lance
+sii0		at mainbus0		# onboard scsi
+# the scsi busses
+oldscsibus*	at sii?
+oldscsibus*	at asc?
+# scsi configuration for old 4.4bsd/pmax decstation scsi driver
+rz0		at oldscsibus? target ? drive ?
+rz1		at oldscsibus? target ? drive ?
+rz2		at oldscsibus? target ? drive ?
+rz3		at oldscsibus? target ? drive ?
+rz4		at oldscsibus? target ? drive ?
+rz5		at oldscsibus? target ? drive ?
+rz6		at oldscsibus? target ? drive ?
+tz0		at oldscsibus? target ? drive ?
+tz1		at oldscsibus? target ? drive ?
+
+led0		at mainbus0		# [23]100 back panel leds
+
+pseudo-device	loop		1
+#pseudo-device	sl		1	# serial-line ip ports
+#pseudo-device	ppp             1       # point ot point ip ports
+pseudo-device	rasterconsole	1 	# nb: raster console requires "fb"
+pseudo-device	fb		1	# up to 3 framebuffers
+#pseudo-device	bpfilter	16	# packet filter ports
+#pseudo-device	pty		64	# pseudo ptys
+pseudo-device	rd		1	# ramdisk
diff --git a/sys/arch/pmax/conf/files.pmax b/sys/arch/pmax/conf/files.pmax
index bca52fcc1f8..e424821c1c3 100644
--- a/sys/arch/pmax/conf/files.pmax
+++ b/sys/arch/pmax/conf/files.pmax
@@ -64,6 +64,12 @@ include "../../../scsi/files.scsi"
 major { tz = 10 }
 major { rz = 21 }
 
+# RAM Disk for install floppy
+pseudo-device rd
+file	dev/ramdisk.c			rd needs-flag
+file	arch/pmax/pmax/rd_root.c	ramdisk_hooks
+major { rd = 25 }
+
 #
 # Old 4.4bsd pmax-specific scsi driver (deprecated).
 #
diff --git a/sys/arch/pmax/pmax/conf.c b/sys/arch/pmax/pmax/conf.c
index 861d6a5a422..afe4143a7b5 100644
--- a/sys/arch/pmax/pmax/conf.c
+++ b/sys/arch/pmax/pmax/conf.c
@@ -57,6 +57,8 @@ bdev_decl(tz);
 #include "ss.h"
 #include "uk.h"
 #include "ccd.h"
+#include "rd.h"
+bdev_decl(rd);
 
 struct bdevsw	bdevsw[] =
 {
@@ -85,6 +87,7 @@ struct bdevsw	bdevsw[] =
 	bdev_disk_init(NRZ,rz),		/* 22: ?? old SCSI disk */ /*XXX*/
 	bdev_notdef(),			/* 23: mscp */
 	bdev_disk_init(NCCD,ccd),	/* 24: concatenated disk driver */
+	bdev_disk_init(NRD,rd),		/* 25: ram disk driver */
 };
 int	nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
 
@@ -127,6 +130,7 @@ cdev_decl(cfb);
 cdev_decl(xcfb);
 #include "mfb.h"
 cdev_decl(mfb);
+cdev_decl(rd);
 dev_decl(filedesc,open);
 
 #ifdef XFS
@@ -259,6 +263,7 @@ struct cdevsw	cdevsw[] =
 	cdev_uk_init(NUK,uk),           /* 89: unknown SCSI */
 	cdev_ss_init(NSS,ss),           /* 90: SCSI scanner */
 	cdev_gen_ipf(NIPF,ipl),		/* 91: ip filtering */
+	cdev_disk_init(NRD,rd),		/* 92: ram disk driver */
 };
 int	nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
 
@@ -385,6 +390,11 @@ static int chrtoblktbl[] =  {
 	/* 85 */	NODEV,
 	/* 86 */	NODEV,
 	/* 87 */	24,
+	/* 88 */	NODEV,
+	/* 89 */	NODEV,
+	/* 90 */	NODEV,
+	/* 91 */	NODEV,
+	/* 92 */	25,		/* rd */
 };
 
 /*
diff --git a/sys/arch/pmax/pmax/rd_root.c b/sys/arch/pmax/pmax/rd_root.c
new file mode 100644
index 00000000000..9e306993701
--- /dev/null
+++ b/sys/arch/pmax/pmax/rd_root.c
@@ -0,0 +1,77 @@
+/*	$OpenBSD: rd_root.c,v 1.1 1998/11/09 05:40:00 millert Exp $	*/
+
+/*
+ * Copyright (c) 1995 Gordon W. Ross
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/reboot.h>
+
+#include <dev/ramdisk.h>
+
+extern int boothowto;
+
+#ifndef MINIROOTSIZE
+#define MINIROOTSIZE 512
+#endif
+
+#define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT)
+
+/*
+ * This array will be patched to contain a file-system image.
+ * See the program:  src/distrib/pmax/ecoffrdsetroot.c
+ */
+int rd_root_size = ROOTBYTES;
+char rd_root_image[ROOTBYTES] = "|This is the root ramdisk!\n";
+
+/*
+ * This is called during autoconfig.
+ */
+void
+rd_attach_hook(unit, rd)
+	int unit;
+	struct rd_conf *rd;
+{
+	if (unit == 0) {
+		/* Setup root ramdisk */
+		rd->rd_addr = (caddr_t) rd_root_image;
+		rd->rd_size = (size_t)  rd_root_size;
+		rd->rd_type = RD_KMEM_FIXED;
+		printf("rd%d: fixed, %d byte blocks, %dK total\n",
+		    unit, MINIROOTSIZE, ROOTBYTES / 1024);
+	}
+}
+
+/*
+ * This is called during open (i.e. mountroot)
+ */
+void
+rd_open_hook(unit, rd)
+	int unit;
+	struct rd_conf *rd;
+{
+}