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 (file)
index 0000000..9bb81c3
--- /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;
+               }
+       }
+}