From: Sam Leffler <sam@ucbvax.Berkeley.EDU>
Date: Fri, 28 May 1982 07:30:56 +0000 (-0800)
Subject: date and time created 82/05/27 16:30:56 by sam
X-Git-Tag: BSD-4_1c_2-Snapshot-Development~3302
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/2c4a4e47685e8b69b5c071d28e5784ceb7683daf

date and time created 82/05/27 16:30:56 by sam

SCCS-vsn: sys/vax/vax/swapgeneric.c 4.1
---

diff --git a/usr/src/sys/vax/vax/swapgeneric.c b/usr/src/sys/vax/vax/swapgeneric.c
new file mode 100644
index 0000000000..9bb81c384f
--- /dev/null
+++ b/usr/src/sys/vax/vax/swapgeneric.c
@@ -0,0 +1,151 @@
+/*	swapgeneric.c	4.12	81/12/03	*/
+
+#include "mba.h"
+
+#include "../h/param.h"
+#include "../h/conf.h"
+#include "../h/pte.h"
+#include "../h/buf.h"
+#include "../h/mbareg.h"
+#include "../h/mbavar.h"
+#include "../h/vm.h"
+#include "../h/ubareg.h"
+#include "../h/ubavar.h"
+#include "../h/systm.h"
+#include "../h/reboot.h"
+#include "../h/cons.h"
+#include "../h/mtpr.h"
+/*
+ * Generic configuration;  all in one
+ */
+dev_t	rootdev, pipedev, argdev, dumpdev;
+int	nswap;
+struct	swdevt swdevt[] =
+{
+	-1,	1,
+	0,	0,
+};
+long	dumplo;
+
+extern	struct mba_driver hpdriver;
+extern	struct uba_driver scdriver;
+extern	struct uba_driver hkdriver;
+extern	struct uba_driver udadriver;
+
+struct	genericconf {
+	caddr_t	gc_driver;
+	char	*gc_name;
+	dev_t	gc_root;
+	long	gc_nswap;
+	long	gc_dumplo;
+} genericconf[] = {
+   (caddr_t)&hpdriver,	"hp", makedev(0, 0), 33440, 33440 - 10*2048,
+   (caddr_t)&scdriver,	"up", makedev(2, 0), 33440, 33440 - 10*2048,
+   (caddr_t)&udadriver,	"ra", makedev(9, 0), 33440, 33440 - 10*2048,
+   (caddr_t)&hkdriver,	"hk", makedev(3, 0), 10032, 10032 - 2*(2048+1024),
+   0,
+};
+
+setconf()
+{
+	register struct mba_device *mi;
+	register struct uba_device *ui;
+	register struct genericconf *gc;
+	int unit;
+
+	if (boothowto & RB_ASKNAME) {
+		char name[128];
+retry:
+		printf("root device? ");
+		gets(name);
+		for (gc = genericconf; gc->gc_driver; gc++)
+			if (gc->gc_name[0] == name[0] &&
+			    gc->gc_name[1] == name[1])
+				goto gotit;
+		goto bad;
+gotit:
+		if (name[2] >= '0' && name[2] <= '7' && name[3] == 0) {
+			unit = name[2] - '0';
+			goto found;
+		}
+		printf("bad/missing unit number\n");
+bad:
+		printf("use hp%%d, up%%d, ra%%d or hk%%d\n");
+		goto retry;
+	}
+	unit = 0;
+	for (gc = genericconf; gc->gc_driver; gc++) {
+		for (mi = mbdinit; mi->mi_driver; mi++) {
+			if (mi->mi_alive == 0)
+				continue;
+			if (mi->mi_unit == 0 && mi->mi_driver ==
+			    (struct mba_driver *)gc->gc_driver) {
+				printf("root on %s0\n", mi->mi_driver->md_dname);
+				goto found;
+			}
+		}
+		for (ui = ubdinit; ui->ui_driver; ui++) {
+			if (ui->ui_alive == 0)
+				continue;
+			if (ui->ui_unit == 0 && ui->ui_driver ==
+			    (struct uba_driver *)gc->gc_driver) {
+				printf("root on %s0\n",
+				    ui->ui_driver->ud_dname);
+				goto found;
+			}
+		}
+	}
+	printf("no suitable root\n");
+	asm("halt");
+found:
+	gc->gc_root = makedev(major(gc->gc_root), unit*8);
+	rootdev = pipedev = gc->gc_root;
+	swdevt[0].sw_dev = argdev = dumpdev =
+	    makedev(major(rootdev), minor(rootdev)+1);
+	nswap = gc->gc_nswap;
+	dumplo = gc->gc_dumplo;
+}
+
+getchar()
+{
+	register c;
+
+	while((mfpr(RXCS)&RXCS_DONE) == 0)
+		;
+	c = mfpr(RXDB)&0177;
+	if (c=='\r')
+		c = '\n';
+	cnputc(c);
+	return(c);
+}
+
+gets(cp)
+	char *cp;
+{
+	register char *lp;
+	register c;
+
+	lp = cp;
+	for (;;) {
+		c = getchar() & 0177;
+		switch(c) {
+		case '\n':
+		case '\r':
+			*lp++ = '\0';
+			return;
+		case '\b':
+		case '#':
+			lp--;
+			if (lp < cp)
+				lp = cp;
+			continue;
+		case '@':
+		case 'u'&037:
+			lp = cp;
+			cnputc('\n');
+			continue;
+		default:
+			*lp++ = c;
+		}
+	}
+}