+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved. The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ * %W% (Berkeley) %G%
+ */
+
+#include "param.h"
+#include "conf.h"
+#include "buf.h"
+#include "vm.h"
+#include "systm.h"
+#include "reboot.h"
+
+#include "pte.h"
+#include "cpu.h"
+#include "cp.h"
+#include "mtpr.h"
+
+#include "../tahoevba/vbavar.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 },
+};
+long dumplo;
+int dmmin, dmmax, dmtext;
+
+extern struct vba_driver vddriver;
+extern struct vba_driver hdcdriver;
+
+struct genericconf {
+ caddr_t gc_driver;
+ char *gc_name;
+ dev_t gc_root;
+} genericconf[] = {
+ { (caddr_t)&vddriver, "dk", makedev(1, 0), },
+ { (caddr_t)&hdcdriver, "hd", makedev(2, 0), },
+ { 0 },
+};
+
+setconf()
+{
+ register struct vba_device *ui;
+ register struct genericconf *gc;
+ register char *cp, *gp;
+ 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++)
+ for (cp = name, gp = gc->gc_name; *cp == *gp; cp++)
+ if (!*++gp)
+ goto gotit;
+ printf("use");
+ 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++;
+ }
+ for (gc = genericconf; gc->gc_driver; gc++) {
+ for (ui = vbdinit; ui->ui_driver; ui++) {
+ if (ui->ui_alive == 0)
+ continue;
+ if (ui->ui_unit == 0 && ui->ui_driver ==
+ (struct vba_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 = gc->gc_root;
+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(buf)
+ char *buf;
+{
+ register int c;
+ register char *lp;
+
+ for (lp = buf;;) {
+ printf("%c", c = cngetc()&0177);
+ switch (c) {
+ case '\n':
+ case '\r':
+ *lp = '\0';
+ return;
+ case '\b':
+ case '\177':
+ if (lp > buf) {
+ --lp;
+ printf("\b \b");
+ }
+ break;
+ case '#':
+ if (lp > buf)
+ --lp;
+ break;
+ case 'r'&037:
+ *lp = 0;
+ printf("\n");
+ printf("%s", buf);
+ break;
+ case '@':
+ case 'u'&037:
+ case 'w'&037:
+ lp = buf;
+ printf("%c", '\n');
+ break;
+ default:
+ *lp++ = c;
+ }
+ }
+ /* NOTREACHED */
+}