Index: i386/common/edd.h
===================================================================
--- i386/common/edd.h	(revision 0)
+++ i386/common/edd.h	(revision 0)
@@ -0,0 +1,126 @@
+/*-
+ * Copyright (c) 2011 Advanced Computing Technologies LLC
+ * Written by: John H. Baldwin <jhb@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_EDD_H_
+#define	_EDD_H_
+
+/* Supported interfaces for "Check Extensions Present". */
+#define	EDD_INTERFACE_FIXED_DISK	0x01
+#define	EDD_INTERFACE_EJECT		0x02
+#define	EDD_INTERFACE_EDD		0x04
+
+struct edd_packet {
+	uint16_t	len;
+	uint16_t	count;
+	uint16_t	off;
+	uint16_t	seg;
+	uint64_t	lba;
+};
+
+struct edd_packet_v3 {
+	uint16_t	len;
+	uint16_t	count;
+	uint16_t	off;
+	uint16_t	seg;
+	uint64_t	lba;
+	uint64_t	phys_addr;
+};
+
+struct edd_params {
+	uint16_t	len;
+	uint16_t	flags;
+	uint32_t	cylinders;
+	uint32_t	heads;
+	uint32_t	sectors_per_track;
+	uint64_t	sectors;
+	uint32_t	sector_size;
+	uint16_t	edd_params_seg;
+	uint16_t	edd_params_off;
+};
+
+struct edd_device_path_v3 {
+	uint16_t	key;
+	uint8_t		len;
+	uint8_t		reserved[3];
+	char		host_bus[4];
+	char		interface[8];
+	uint64_t	interface_path;
+	uint64_t	device_path;
+	uint8_t		reserved2[1];
+	uint8_t		checksum;
+};
+
+struct edd_params_v3 {
+	uint16_t	len;
+	uint16_t	flags;
+	uint32_t	cylinders;
+	uint32_t	heads;
+	uint32_t	sectors_per_track;
+	uint64_t	sectors;
+	uint32_t	sector_size;
+	uint16_t	edd_params_seg;
+	uint16_t	edd_params_off;
+	struct edd_device_path_v3 device_path;
+};
+
+struct edd_device_path_v4 {
+	uint16_t	key;
+	uint8_t		len;
+	uint8_t		reserved[3];
+	char		host_bus[4];
+	char		interface[8];
+	uint64_t	interface_path;
+	uint64_t	device_path[2];
+	uint8_t		reserved2[1];
+	uint8_t		checksum;
+};
+
+struct edd_params_v4 {
+	uint16_t	len;
+	uint16_t	flags;
+	uint32_t	cylinders;
+	uint32_t	heads;
+	uint32_t	sectors_per_track;
+	uint64_t	sectors;
+	uint32_t	sector_size;
+	uint16_t	edd_params_seg;
+	uint16_t	edd_params_off;
+	struct edd_device_path_v4 device_path;
+};
+
+#define	EDD_FLAGS_DMA_BOUNDARY_HANDLING		0x0001
+#define	EDD_FLAGS_REMOVABLE_MEDIA		0x0002
+#define	EDD_FLAGS_WRITE_VERIFY			0x0004
+#define	EDD_FLAGS_MEDIA_CHANGE_NOTIFICATION	0x0008
+#define	EDD_FLAGS_LOCKABLE_MEDIA		0x0010
+#define	EDD_FLAGS_NO_MEDIA_PRESENT		0x0020
+
+#define	EDD_DEVICE_PATH_KEY	0xbedd
+
+#endif /* !_EDD_H_ */

Property changes on: i386/common/edd.h
___________________________________________________________________
Added: svn:mime-type
   + text/plain
Added: svn:keywords
   + FreeBSD=%H
Added: svn:eol-style
   + native

Index: i386/common/drv.c
===================================================================
--- i386/common/drv.c	(revision 226617)
+++ i386/common/drv.c	(working copy)
@@ -19,29 +19,29 @@
 
 #include <sys/param.h>
 
 #include <machine/psl.h>
 
 #include <btxv86.h>
 
 #include "rbx.h"
 #include "util.h"
 #include "drv.h"
+#include "edd.h"
 #ifdef USE_XREAD
 #include "xreadorg.h"
 #endif
 
 #define	V86_CY(x)	((x) & PSL_C)
 #define	V86_ZR(x)	((x) & PSL_Z)
 
 #ifdef GPT
+static struct edd_params params;
+
 uint64_t
 drvsize(struct dsk *dskp)
 {
-	unsigned char params[0x42];
-	uint64_t sectors;
 
-	*(uint32_t *)params = sizeof(params);
-
+	params.len = sizeof(struct edd_params);
 	v86.ctl = V86_FLAGS;
 	v86.addr = 0x13;
 	v86.eax = 0x4800;
@@ -53,19 +48,12 @@
 		printf("error %u\n", v86.eax >> 8 & 0xff);
 		return (0);
 	}
-	memcpy(&sectors, params + 0x10, sizeof(sectors));
-	return (sectors);
+	return (params.sectors);
 }
 #endif	/* GPT */
 
 #ifndef USE_XREAD
-static struct {
-	uint16_t	len;
-	uint16_t	count;
-	uint16_t	off;
-	uint16_t	seg;
-	uint64_t	lba;
-} packet;
+static struct edd_packet packet;
 #endif
 
 int
@@ -76,7 +64,7 @@
 	if (!OPT_CHECK(RBX_QUIET))
 		printf("%c\b", c = c << 8 | c >> 24);
 #ifndef USE_XREAD
-	packet.len = 0x10;
+	packet.len = sizeof(struct edd_packet);
 	packet.count = nblk;
 	packet.off = VTOPOFF(buf);
 	packet.seg = VTOPSEG(buf);
@@ -110,7 +98,7 @@
 drvwrite(struct dsk *dskp, void *buf, daddr_t lba, unsigned nblk)
 {
 
-	packet.len = 0x10;
+	packet.len = sizeof(struct edd_packet);
 	packet.count = nblk;
 	packet.off = VTOPOFF(buf);
 	packet.seg = VTOPSEG(buf);