[src/trunk]: src/sys/arch/sparc/sparc Add special code for recognising a flop...

[pk <pk%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9a16bea18913
branches:  trunk
changeset: 480351:9a16bea18913
user:      pk <pk%NetBSD.org@localhost>
date:      Sun Jan 09 20:53:30 2000 +0000

description:
Add special code for recognising a floppy drive as the boot device.
Sun's PROMs don't co-operate here, so there are _hacks_ involved...

diffstat:

 sys/arch/sparc/sparc/autoconf.c |  31 +++++++++++++++++++++++++++++--
 1 files changed, 29 insertions(+), 2 deletions(-)

diffs (67 lines):

diff -r 0bb22a529c3d -r 9a16bea18913 sys/arch/sparc/sparc/autoconf.c
--- a/sys/arch/sparc/sparc/autoconf.c   Sun Jan 09 20:09:43 2000 +0000
+++ b/sys/arch/sparc/sparc/autoconf.c   Sun Jan 09 20:53:30 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: autoconf.c,v 1.126 1999/11/13 00:32:13 thorpej Exp $ */
+/*     $NetBSD: autoconf.c,v 1.127 2000/01/09 20:53:30 pk Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -576,8 +576,11 @@
                /*
                 * Assume `fd(c,u,p)' means:
                 * partition `p' on floppy drive `u' on controller `c'
+                * Yet, for the purpose of determining the boot device,
+                * we support only one controller, so we encode the
+                * bootpath component by unit number, as on a v2 prom.
                 */
-               BP_APPEND(bp, "fd", v0val[0], v0val[1], v0val[2]);
+               BP_APPEND(bp, "fd", -1, v0val[1], v0val[2]);
                return;
        }
 
@@ -1695,6 +1698,7 @@
            strcmp(dvname, "espdma") == 0 ||
            strcmp(dvname, "esp") == 0 ||
            strcmp(dvname, "isp") == 0 ||
+           strcmp(dvname, "fdc") == 0 ||
            strcmp(dvname, "xdc") == 0 ||
            strcmp(dvname, "xyc") == 0 ) {
                /*
@@ -1702,6 +1706,19 @@
                 * parameters and advance boot path on match.
                 */
                if (instance_match(dev, aux, bp) != 0) {
+                       if (strcmp(dvname, "fdc") == 0) {
+                               /*
+                                * XXX - HACK ALERT
+                                * Sun PROMs don't really seem to support
+                                * multiple floppy drives. So we aren't
+                                * going to, either.  Since the PROM
+                                * only provides a node for the floppy
+                                * controller, we sneakily add a drive to
+                                * the bootpath here.
+                                */
+                               strcpy(bootpath[nbootpath].name, "fd");
+                               nbootpath++;
+                       }
                        altbootpath_store(1, bp + 1);
                        return;
                }
@@ -1767,6 +1784,16 @@
                        nail_bootdev(dev, bp);
                        return;
                }
+       } else if (strcmp("fd", dvname) == 0) {
+               /*
+                * Sun PROMs don't really seem to support multiple
+                * floppy drives. So we aren't going to, either.
+                * If we get this far, the `fdc controller' has
+                * already matched and has appended a fake `fd' entry
+                * to the bootpath, so just accept that as the boot device.
+                */
+               nail_bootdev(dev, bp);
+               return;
        } else {
                /*
                 * Generic match procedure.