From eb3dd13248cffadeef829d1f2442d3872f760c9e Mon Sep 17 00:00:00 2001
From: nyan <nyan@FreeBSD.org>
Date: Wed, 30 Mar 2005 13:03:33 +0000
Subject: [PATCH] Add over 32GB disk support on pc98 (userland part).

Submitted by:	Hirokazu WATANABE
---
 lib/libdisk/change.c        | 25 ++++++++++++++++++++++++-
 usr.sbin/sade/disks.c       |  2 +-
 usr.sbin/sysinstall/disks.c |  2 +-
 3 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/lib/libdisk/change.c b/lib/libdisk/change.c
index 12812bda47ef..7b6356156733 100644
--- a/lib/libdisk/change.c
+++ b/lib/libdisk/change.c
@@ -40,7 +40,11 @@ Sanitize_Bios_Geom(struct disk *disk)
 	if (disk->bios_cyl > 1024)
 #endif
 		sane = 0;
+#ifdef PC98
+	if (disk->bios_hd >= 256)
+#else
 	if (disk->bios_hd > 16)
+#endif
 		sane = 0;
 #ifdef PC98
 	if (disk->bios_sect >= 256)
@@ -68,8 +72,8 @@ Sanitize_Bios_Geom(struct disk *disk)
 		return;
 
 	/* Hmm, try harder... */
-#ifdef PC98
 	/* Assume standard SCSI parameter */
+#ifdef PC98
 	disk->bios_sect = 128;
 	disk->bios_hd = 8;
 #else
@@ -77,6 +81,25 @@ Sanitize_Bios_Geom(struct disk *disk)
 #endif
 	disk->bios_cyl = disk->chunks->size /
 		(disk->bios_sect * disk->bios_hd);
+
+#ifdef PC98
+	if (disk->bios_cyl < 65536)
+		return;
+
+	/* Assume UIDE-133/98-A Challenger BIOS 0.9821C parameter */
+	disk->bios_sect = 255;
+	disk->bios_hd = 16;
+	disk->bios_cyl = disk->chunks->size /
+		(disk->bios_sect * disk->bios_hd);
+
+	if (disk->bios_cyl < 65536)
+		return;
+
+	/* BIG-na-Drive? */
+	disk->bios_hd = 255;
+	disk->bios_cyl = disk->chunks->size /
+		(disk->bios_sect * disk->bios_hd);
+#endif
 }
 
 void
diff --git a/usr.sbin/sade/disks.c b/usr.sbin/sade/disks.c
index 1e35c7b3a11c..a60ced521f87 100644
--- a/usr.sbin/sade/disks.c
+++ b/usr.sbin/sade/disks.c
@@ -120,7 +120,7 @@ print_chunks(Disk *d, int u)
     for (i = 0; chunk_info[i]; i++)
 	Total += chunk_info[i]->size;
 #ifdef PC98
-    if (d->bios_cyl >= 65536 || d->bios_hd > 16 || d->bios_sect >= 256) {
+    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
 #else
     if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
 #endif
diff --git a/usr.sbin/sysinstall/disks.c b/usr.sbin/sysinstall/disks.c
index 1e35c7b3a11c..a60ced521f87 100644
--- a/usr.sbin/sysinstall/disks.c
+++ b/usr.sbin/sysinstall/disks.c
@@ -120,7 +120,7 @@ print_chunks(Disk *d, int u)
     for (i = 0; chunk_info[i]; i++)
 	Total += chunk_info[i]->size;
 #ifdef PC98
-    if (d->bios_cyl >= 65536 || d->bios_hd > 16 || d->bios_sect >= 256) {
+    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
 #else
     if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
 #endif