date and time created 92/06/15 06:38:48 by fujita

SCCS-vsn: sys/luna68k/luna68k/swapgeneric.c 7.1

diff --git a/usr/src/sys/luna68k/luna68k/swapgeneric.c b/usr/src/sys/luna68k/luna68k/swapgeneric.c
new file mode 100644 (file)
index 0000000..68d349d
--- /dev/null
+++ b/usr/src/sys/luna68k/luna68k/swapgeneric.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 1992 OMRON Corporation.
+ * Copyright (c) 1982, 1986, 1992 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ * from: hp300/hp300/swapgeneric.c     7.1 (Berkeley) 6/4/92
+ *
+ *     @(#)swapgeneric.c       7.1 (Berkeley) %G%
+ */
+
+#include "sys/param.h"
+#include "sys/conf.h"
+#include "sys/buf.h"
+#include "sys/systm.h"
+#include "sys/reboot.h"
+
+#include "../dev/device.h"
+
+/*
+ * Generic configuration;  all in one
+ */
+
+dev_t  rootdev = NODEV;
+dev_t  argdev  = NODEV;
+dev_t  dumpdev = NODEV;
+
+int    nswap;
+
+struct swdevt swdevt[] = {
+       { -1,   1,      0 },
+       { 0,    0,      0 },
+};
+
+int    dmmin, dmmax, dmtext;
+
+extern struct driver sddriver;
+extern struct hp_ctlr hp_cinit[];
+extern struct hp_device hp_dinit[];
+
+struct genericconf {
+       caddr_t gc_driver;
+       char    *gc_name;
+       dev_t   gc_root;
+} genericconf[] = {
+       { (caddr_t)&sddriver,   "sd",   makedev(4, 0) },
+       { 0 },
+};
+
+setconf()
+{
+       register struct hp_ctlr *hc;
+       register struct hp_device *hd;
+       register struct genericconf *gc;
+       register char *cp;
+       int unit, swaponroot = 0;
+
+       if (rootdev != NODEV)
+               goto doswap;
+       unit = 0;
+       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;
+               printf("use one of:");
+               for (gc = genericconf; gc->gc_driver; gc++)
+                       printf(" %s%%d", gc->gc_name);
+               printf("\n");
+               goto retry;
+gotit:
+               cp = &name[2];
+               if (*cp < '0' || *cp > '9') {
+                       printf("bad/missing unit number\n");
+                       goto retry;
+               }
+               while (*cp >= '0' && *cp <= '9')
+                       unit = 10 * unit + *cp++ - '0';
+               if (*cp == '*')
+                       swaponroot++;
+               goto found;
+       }
+
+       for (gc = genericconf; gc->gc_driver; gc++) {
+               for (hd = hp_dinit; hd->hp_driver; hd++) {
+                       if (hd->hp_alive == 0)
+                               continue;
+                       if (hd->hp_unit == 0 && hd->hp_driver ==
+                           (struct driver *)gc->gc_driver) {
+                               printf("root on %s0\n", hd->hp_driver->d_name);
+                               goto found;
+                       }
+               }
+       }
+       printf("no suitable root\n");
+       asm("stop #0x2700");
+found:
+       gc->gc_root = makedev(major(gc->gc_root), unit*8);
+       rootdev = gc->gc_root;
+       printf("using root device: %s%d%c\n", gc->gc_name, unit, 'a');
+
+doswap:
+       swdevt[0].sw_dev = argdev = dumpdev =
+           makedev(major(rootdev), minor(rootdev)+1);
+       /* swap size and dumplo set during autoconfigure */
+       if (swaponroot)
+               rootdev = dumpdev;
+}
+
+gets(cp)
+       char *cp;
+{
+       register char *lp;
+       register c;
+
+       lp = cp;
+       for (;;) {
+               cnputc(c = cngetc());
+               switch (c) {
+               case '\n':
+               case '\r':
+                       *lp++ = '\0';
+                       return;
+               case '\b':
+               case '\177':
+                       if (lp > cp) {
+                               lp--;
+                               cnputc(' ');
+                               cnputc('\b');
+                       }
+                       continue;
+               case '#':
+                       lp--;
+                       if (lp < cp)
+                               lp = cp;
+                       continue;
+               case '@':
+               case 'u'&037:
+                       lp = cp;
+                       cnputc('\n');
+                       continue;
+               default:
+                       *lp++ = c;
+               }
+       }
+}