Initial storage functionality for U-Boot support library.

- Only non-sliced bsdlabel style partitioning is currently supported (but provisions
  are made towards GPT support, which should follow soon)
- Enable storage support in loader on ARM

Obtained from:	Semihalf

sys/boot/arm/uboot/Makefile

@@ -10,8 +10,8 @@ WARNS?=		1
 # Architecture-specific loader code
 SRCS=		start.S conf.c vers.c
 
-LOADER_DISK_SUPPORT?=	no
-LOADER_UFS_SUPPORT?=	no
+LOADER_DISK_SUPPORT?=	yes
+LOADER_UFS_SUPPORT?=	yes
 LOADER_CD9660_SUPPORT?=	no
 LOADER_EXT2FS_SUPPORT?=	no
 LOADER_NET_SUPPORT?=	yes

sys/boot/arm/uboot/conf.c

@@ -38,7 +38,7 @@ __FBSDID("$FreeBSD$");
 
 struct devsw *devsw[] = {
 #if defined(LOADER_DISK_SUPPORT) || defined(LOADER_CD9660_SUPPORT)
-	&uboot_disk,
+	&uboot_storage,
 #endif
 #if defined(LOADER_NET_SUPPORT)
 	&netdev,

sys/boot/arm/uboot/version

@@ -3,4 +3,5 @@ $FreeBSD$
 NOTE ANY CHANGES YOU MAKE TO THE BOOTBLOCKS HERE.  The format of this
 file is important.  Make sure the current version number is on line 6.
 
+1.0:	Added storage support. Booting from HDD, USB, etc. is now possible.
 0.5:	Initial U-Boot/arm version (netbooting only).

sys/boot/uboot/lib/devicename.c

@@ -64,7 +64,7 @@ uboot_getdev(void **vdev, const char *devspec, const char **path)
 	/*
 	 * Try to parse the device name off the beginning of the devspec.
 	 */
-	return(uboot_parsedev(dev, devspec, path));
+	return (uboot_parsedev(dev, devspec, path));
 }
 
 /*
@@ -78,7 +78,7 @@ uboot_getdev(void **vdev, const char *devspec, const char **path)
  *
  * For disk-type devices, the syntax is:
  *
- * disk<unit>[s<slice>][<partition>]:
+ * disk<unit>[<partition>]:
  *
  */
 static int
@@ -86,10 +86,10 @@ uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
     const char **path)
 {
 	struct uboot_devdesc *idev;
-	struct devsw	*dv;
-	char		*cp;
-	const char		*np;
-	int			 i, unit, slice, partition, err;
+	struct devsw *dv;
+	char *cp;
+	const char *np;
+	int i, unit, partition, err;
 
 	/* minimum length check */
 	if (strlen(devspec) < 2)
@@ -110,12 +110,11 @@ uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
 	np = (devspec + strlen(dv->dv_name));
 
 	switch(dv->dv_type) {
-	case DEVT_NONE:			/* XXX what to do here?  Do we care? */
+	case DEVT_NONE:
 		break;
 
 	case DEVT_DISK:
 		unit = -1;
-		slice = -1;
 		partition = -1;
 		if (*np && (*np != ':')) {
 			/* next comes the unit number */
@@ -124,16 +123,8 @@ uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
 				err = EUNIT;
 				goto fail;
 			}
-			if (*cp == 's') {		/* got a slice number */
-				np = cp + 1;
-				slice = strtol(np, &cp, 10);
-				if (cp == np) {
-					err = ESLICE;
-					goto fail;
-				}
-			}
 			if (*cp && (*cp != ':')) {
-				/* get a partition number */
+				/* get partition */
 				partition = *cp - 'a';
 				if ((partition < 0) ||
 				    (partition >= MAXPARTITIONS)) {
@@ -145,12 +136,12 @@ uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
 		}
 		if (*cp && (*cp != ':')) {
 			err = EINVAL;
-		goto fail;
+			goto fail;
 		}
 
 		idev->d_unit = unit;
-		idev->d_kind.disk.slice = slice;
-		idev->d_kind.disk.partition = partition;
+		idev->d_disk.partition = partition;
+		idev->d_disk.data = NULL;
 		if (path != NULL)
 			*path = (*cp == 0) ? cp : cp + 1;
 		break;
@@ -170,9 +161,7 @@ uboot_parsedev(struct uboot_devdesc **dev, const char *devspec,
 			err = EINVAL;
 			goto fail;
 		}
-
-		if (dv->dv_type == DEVT_NET)
-			idev->d_unit = unit;
+		idev->d_unit = unit;
 
 		if (path != NULL)
 			*path = (*cp == 0) ? cp : cp + 1;
@@ -212,8 +201,6 @@ uboot_fmtdev(void *vdev)
 	case DEVT_DISK:
 		cp = buf;
 		cp += sprintf(cp, "%s%d", dev->d_dev->dv_name, dev->d_unit);
-		if (dev->d_kind.disk.slice > 0)
-			cp += sprintf(cp, "s%d", dev->d_kind.disk.slice);
 		if (dev->d_kind.disk.partition >= 0)
 			cp += sprintf(cp, "%c", dev->d_kind.disk.partition +
 			    'a');

sys/boot/uboot/lib/disk.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (C) 2000 Benno Rice.
+ * Copyright (c) 2008 Semihalf, Rafal Jaworowski
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -11,99 +11,453 @@
  *    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 Benno Rice ``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 TOOLS GMBH 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.
+ * 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.
+ *
+ */
+
+/*
+ * Block storage I/O routines for U-Boot
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-/*
- * Disk I/O routines using U-Boot - TODO
- */
-
 #include <sys/param.h>
 #include <sys/queue.h>
-
 #include <netinet/in.h>
 #include <machine/stdarg.h>
 #include <stand.h>
+#include <uuid.h>
 
+#define FSTYPENAMES
+#include <sys/disklabel.h>
+
+#include "api_public.h"
 #include "bootstrap.h"
+#include "glue.h"
+#include "libuboot.h"
 
-static int	d_init(void);
-static int	d_strategy(void *devdata, int flag, daddr_t dblk,
-		    size_t size, char *buf, size_t *rsize);
-static int	d_open(struct open_file *f, ...);
-static int	d_close(struct open_file *f);
-static int	d_ioctl(struct open_file *f, u_long cmd, void *data);
-static void	d_print(int verbose);
+#define DEBUG
+#undef DEBUG
 
-struct devsw uboot_disk = {
-	"block",
+#define stor_printf(fmt, args...) do {			\
+    printf("%s%d: ", dev->d_dev->dv_name, dev->d_unit);	\
+    printf(fmt, ##args);				\
+} while (0)
+
+#ifdef DEBUG
+#define debugf(fmt, args...) do { printf("%s(): ", __func__);	\
+    printf(fmt,##args); } while (0)
+#else
+#define debugf(fmt, args...)
+#endif
+
+struct gpt_part {
+	int		gp_index;
+	uuid_t		gp_type;
+	uint64_t	gp_start;
+	uint64_t	gp_end;
+};
+
+struct open_dev {
+	int		od_bsize;	/* block size */
+	int		od_bstart;	/* start block offset from beginning of disk */
+	int		od_type;
+#define OD_BSDLABEL	0x0001
+#define	OD_GPT		0x0002
+	union {
+		struct {
+			struct disklabel bsdlabel;
+		} _bsd;
+		struct {
+			struct gpt_part	*gpt_partitions;
+			int		gpt_nparts;
+		} _gpt;
+	} _data;
+};
+
+#define	od_bsdlabel	_data._bsd.bsdlabel
+#define	od_nparts	_data._gpt.gpt_nparts
+#define	od_partitions	_data._gpt.gpt_partitions
+
+static int stor_info[UB_MAX_DEV];
+static int stor_info_no = 0;
+static int stor_opendev(struct open_dev **, struct uboot_devdesc *);
+static int stor_closedev(struct uboot_devdesc *);
+static int stor_readdev(struct uboot_devdesc *, daddr_t, size_t, char *);
+static int stor_open_count = 0;
+
+/* devsw I/F */
+static int stor_init(void);
+static int stor_strategy(void *, int, daddr_t, size_t, char *, size_t *);
+static int stor_open(struct open_file *, ...);
+static int stor_close(struct open_file *);
+static void stor_print(int);
+
+struct devsw uboot_storage = {
+	"disk",
 	DEVT_DISK,
-	d_init,
-	d_strategy,
-	d_open,
-	d_close,
-	d_ioctl,
-	d_print
+	stor_init,
+	stor_strategy,
+	stor_open,
+	stor_close,
+	noioctl,
+	stor_print
 };
 
-struct opened_dev {
-	u_int			count;
-	SLIST_ENTRY(opened_dev)	link;
-};
-
-SLIST_HEAD(, opened_dev) opened_devs = SLIST_HEAD_INITIALIZER(opened_dev);
-
 static int
-d_init(void)
+stor_init(void)
 {
+	struct device_info *di;
+	int i, found = 0;
 
-	return 0;
+	if (devs_no == 0) {
+		printf("No U-Boot devices! Really enumerated?\n");
+		return (-1);
+	}
+
+	for (i = 0; i < devs_no; i++) {
+		di = ub_dev_get(i);
+		if ((di != NULL) && (di->type & DEV_TYP_STOR)) {
+			if (stor_info_no >= UB_MAX_DEV) {
+				printf("Too many storage devices: %d\n",
+				    stor_info_no);
+				return (-1);
+			}
+			stor_info[stor_info_no++] = i;
+			found = 1;
+		}
+	}
+
+	if (!found) {
+		printf("No storage devices\n");
+		return (-1);
+	}
+
+	debugf("storage devices found: %d\n", stor_info_no);
+	return (0);
 }
 
 static int
-d_strategy(void *devdata, int flag, daddr_t dblk, size_t size, char *buf,
+stor_strategy(void *devdata, int rw, daddr_t blk, size_t size, char *buf,
     size_t *rsize)
 {
+	struct uboot_devdesc *dev = (struct uboot_devdesc *)devdata;
+	struct open_dev *od = (struct open_dev *)dev->d_disk.data;
+	int bcount, err;
 
-	return (EINVAL);
+	debugf("od=%p, size=%d, bsize=%d\n", od, size, od->od_bsize);
+
+	if (rw != F_READ) {
+		stor_printf("write attempt, operation not supported!\n");
+		return (EROFS);
+	}
+
+	if (size % od->od_bsize) {
+		stor_printf("size=%d not multiple of device block size=%d\n",
+		    size, od->od_bsize);
+		return (EIO);
+	}
+	bcount = size / od->od_bsize;
+
+	if (rsize)
+		*rsize = 0;
+
+	err = stor_readdev(dev, blk + od->od_bstart, bcount, buf);
+	if (!err && rsize)
+		*rsize = size;
+
+	return (err);
 }
 
 static int
-d_open(struct open_file *f, ...)
+stor_open(struct open_file *f, ...)
 {
+	va_list ap;
+	struct open_dev *od;
+	struct uboot_devdesc *dev;
+	int err;
 
-	return (EINVAL);
+	va_start(ap, f);
+	dev = va_arg(ap, struct uboot_devdesc *);
+	va_end(ap);
+
+	if ((err = stor_opendev(&od, dev)) != 0)
+		return (err);
+
+	((struct uboot_devdesc *)(f->f_devdata))->d_disk.data = od;
+
+	return (0);
 }
 
 static int
-d_close(struct open_file *f)
+stor_close(struct open_file *f)
 {
+	struct uboot_devdesc *dev;
 
-	return (EINVAL);
+	dev = (struct uboot_devdesc *)(f->f_devdata);
+
+	return (stor_closedev(dev));
 }
 
 static int
-d_ioctl(struct open_file *f, u_long cmd, void *data)
+stor_open_gpt(struct open_dev *od, struct uboot_devdesc *dev)
 {
 
-	return (EINVAL);
+	/* TODO */
+	return (ENXIO);
+}
+
+static int
+stor_open_bsdlabel(struct open_dev *od, struct uboot_devdesc *dev)
+{
+	char *buf;
+	struct disklabel *dl;
+	int err = 0;
+
+	/* Allocate 1 block */
+	buf = malloc(od->od_bsize);
+	if (!buf) {
+		stor_printf("could not allocate memory for disklabel\n");
+		return (ENOMEM);
+	}
+
+	/* Read disklabel */
+	err = stor_readdev(dev, LABELSECTOR, 1, buf);
+	if (err) {
+		stor_printf("disklabel read error=%d\n", err);
+		err = ERDLAB;
+		goto out;
+	}
+	bcopy(buf + LABELOFFSET, &od->od_bsdlabel, sizeof(struct disklabel));
+	dl = &od->od_bsdlabel;
+
+	if (dl->d_magic != DISKMAGIC) {
+		stor_printf("no disklabel magic!\n");
+		err = EUNLAB;
+		goto out;
+	}
+	od->od_type = OD_BSDLABEL;
+	od->od_bstart = dl->d_partitions[dev->d_disk.partition].p_offset;
+
+	debugf("bstart=%d\n", od->od_bstart);
+
+out:
+	free(buf);
+	return (err);
+}
+
+static int
+stor_readdev(struct uboot_devdesc *dev, daddr_t blk, size_t size, char *buf)
+{
+	lbasize_t real_size;
+	int err, handle;
+
+	debugf("reading size=%d @ 0x%08x\n", size, (uint32_t)buf);
+
+	handle = stor_info[dev->d_unit];
+	err = ub_dev_read(handle, buf, size, blk, &real_size);
+	if (err != 0) {
+		stor_printf("read failed, error=%d\n", err);
+		return (EIO);
+	}
+
+	if (real_size != size) {
+		stor_printf("real size != size\n");
+		err = EIO;
+	}
+
+	return (err);
+}
+
+
+static int
+stor_opendev(struct open_dev **odp, struct uboot_devdesc *dev)
+{
+	struct device_info *di;
+	struct open_dev *od;
+	int err, h;
+
+	h = stor_info[dev->d_unit];
+
+	debugf("refcount=%d\n", stor_open_count);
+
+	/*
+	 * There can be recursive open calls from the infrastructure, but at
+	 * U-Boot level open the device only the first time.
+	 */
+	if (stor_open_count > 0)
+		stor_open_count++;
+	else if ((err = ub_dev_open(h)) != 0) {
+		stor_printf("device open failed with error=%d, handle=%d\n",
+		    err, h);
+		*odp = NULL;
+		return (ENXIO);
+	}
+
+	if ((di = ub_dev_get(h)) == NULL)
+		panic("could not retrieve U-Boot device_info, handle=%d", h);
+
+	if ((od = malloc(sizeof(struct open_dev))) == NULL) {
+		stor_printf("could not allocate memory for open_dev\n");
+		return (ENOMEM);
+	}
+	od->od_bsize = di->di_stor.block_size;
+	od->od_bstart = 0;
+	od->od_type = 0;
+
+	if ((err = stor_open_gpt(od, dev)) != 0)
+		err = stor_open_bsdlabel(od, dev);
+
+	if (err != 0)
+		free(od);
+	else {
+		stor_open_count = 1;
+		*odp = od;
+	}
+
+	return (err);
+}
+
+static int
+stor_closedev(struct uboot_devdesc *dev)
+{
+	int err, h;
+
+	free((struct open_dev *)dev->d_disk.data);
+	dev->d_disk.data = NULL;
+
+	if (--stor_open_count == 0) {
+		h = stor_info[dev->d_unit];
+		if ((err = ub_dev_close(h)) != 0) {
+			stor_printf("device close failed with error=%d, "
+			    "handle=%d\n", err, h);
+			return (ENXIO);
+		}
+	}
+
+	return (0);
+}
+
+/* Given a size in 512 byte sectors, convert it to a human-readable number. */
+/* XXX stolen from sys/boot/i386/libi386/biosdisk.c, should really be shared */
+static char *
+display_size(uint64_t size)
+{
+	static char buf[80];
+	char unit;
+
+	size /= 2;
+	unit = 'K';
+	if (size >= 10485760000LL) {
+		size /= 1073741824;
+		unit = 'T';
+	} else if (size >= 10240000) {
+		size /= 1048576;
+		unit = 'G';
+	} else if (size >= 10000) {
+		size /= 1024;
+		unit = 'M';
+	}
+	sprintf(buf, "%.6ld%cB", (long)size, unit);
+	return (buf);
 }
 
 static void
-d_print(int verbose)
+stor_print_bsdlabel(struct uboot_devdesc *dev, char *prefix, int verbose)
 {
+	char buf[512], line[80];
+	struct disklabel *dl;
+	uint32_t off, size;
+	int err, i, t;
 
-	return;
+	/* Read disklabel */
+	err = stor_readdev(dev, LABELSECTOR, 1, buf);
+	if (err) {
+		sprintf(line, "%s%d: disklabel read error=%d\n",
+		    dev->d_dev->dv_name, dev->d_unit, err);
+		pager_output(line);
+		return;
+	}
+	dl = (struct disklabel *)buf;
+
+	if (dl->d_magic != DISKMAGIC) {
+		sprintf(line, "%s%d: no disklabel magic!\n",
+		    dev->d_dev->dv_name, dev->d_unit);
+		pager_output(line);
+		return;
+	}
+
+	/* Print partitions info */
+	for (i = 0; i < dl->d_npartitions; i++) {
+		if ((t = dl->d_partitions[i].p_fstype) < FSMAXTYPES) {
+
+			off = dl->d_partitions[i].p_offset;
+			size = dl->d_partitions[i].p_size;
+			if (fstypenames[t] == NULL || size == 0)
+				continue;
+
+			if ((('a' + i) == 'c') && (!verbose))
+				continue;
+
+			sprintf(line, "  %s%c: %s %s (%d - %d)\n", prefix,
+			    'a' + i, fstypenames[t], display_size(size),
+			    off, off + size);
+
+			pager_output(line);
+		}
+	}
+}
+
+static void
+stor_print_one(int i, struct device_info *di, int verbose)
+{
+	struct uboot_devdesc dev;
+	struct open_dev *od;
+	char line[80];
+
+	sprintf(line, "\tdisk%d (%s)\n", i, ub_stor_type(di->type));
+	pager_output(line);
+
+	dev.d_dev = &uboot_storage;
+	dev.d_unit = i;
+	dev.d_disk.partition = -1;
+	dev.d_disk.data = NULL;
+
+	if (stor_opendev(&od, &dev) == 0) {
+		dev.d_disk.data = od;
+
+		if (od->od_type == OD_GPT) {
+			/* TODO */
+
+		} else if (od->od_type == OD_BSDLABEL) {
+			sprintf(line, "\t\tdisk%d", i);
+			stor_print_bsdlabel(&dev, line, verbose);
+		}
+
+		stor_closedev(&dev);
+	}
+}
+
+static void
+stor_print(int verbose)
+{
+	struct device_info *di;
+	int i;
+
+	for (i = 0; i < stor_info_no; i++) {
+		di = ub_dev_get(stor_info[i]);
+		if (di != NULL)
+			stor_print_one(i, di, verbose);
+	}
 }

sys/boot/uboot/lib/glue.c

@@ -454,7 +454,7 @@ ub_dev_send(int handle, void *buf, int len)
 	return (err);
 }
 
-static char *
+char *
 ub_stor_type(int type)
 {
 

sys/boot/uboot/lib/glue.h

@@ -81,5 +81,6 @@ struct device_info *ub_dev_get(int);
 void ub_dump_di(int);
 void ub_dump_si(struct sys_info *);
 char *ub_mem_type(int);
+char *ub_stor_type(int);
 
 #endif /* _API_GLUE_H_ */

sys/boot/uboot/lib/libuboot.h

@@ -27,11 +27,6 @@
  * $FreeBSD$
  */
 
-/*
- * Fully-qualified device descriptor.
- * Note, this must match the 'struct devdesc' declaration
- * in bootstrap.h.
- */
 struct uboot_devdesc
 {
 	struct devsw	*d_dev;
@@ -40,28 +35,29 @@ struct uboot_devdesc
 	union {
 		struct {
 			void	*data;
-			int	slice;
 			int	partition;
 		} disk;
 	} d_kind;
 };
 
+#define d_disk d_kind.disk
+
 /*
  * Default network packet alignment in memory
  */
 #define	PKTALIGN	32
 
-int	 uboot_getdev(void **vdev, const char *devspec, const char **path);
-char	*uboot_fmtdev(void *vdev);
-int	 uboot_setcurrdev(struct env_var *ev, int flags, const void *value);
+int uboot_getdev(void **vdev, const char *devspec, const char **path);
+char *uboot_fmtdev(void *vdev);
+int uboot_setcurrdev(struct env_var *ev, int flags, const void *value);
 
+extern int devs_no;
 extern struct netif_driver uboot_net;
-extern struct devsw uboot_disk;
+extern struct devsw uboot_storage;
 
 ssize_t	uboot_copyin(const void *src, vm_offset_t dest, const size_t len);
 ssize_t	uboot_copyout(const vm_offset_t src, void *dest, const size_t len);
 ssize_t	uboot_readin(const int fd, vm_offset_t dest, const size_t len);
-
 extern int uboot_autoload(void);
 
 struct preloaded_file;
@@ -69,4 +65,4 @@ struct file_format;
 
 extern struct file_format uboot_elf;
 
-void	reboot(void);
+void reboot(void);

sys/boot/uboot/lib/net.c

@@ -59,7 +59,6 @@ static int	net_get(struct iodesc *, void *, size_t, time_t);
 static int	net_put(struct iodesc *, void *, size_t);
 static void	net_end(struct netif *);
 
-extern int devs_no;
 extern struct netif_stats net_stats[];
 
 struct netif_dif net_ifs[] = {

sys/sys/disklabel.h

@@ -52,7 +52,7 @@
 
 /* XXX these should be defined per controller (or drive) elsewhere, not here! */
 #if defined(__i386__) || defined(__amd64__) || defined(__arm__) || \
-    defined(__ia64__)
+    defined(__ia64__) || defined(__powerpc__)
 #define LABELSECTOR	1			/* sector containing label */
 #define LABELOFFSET	0			/* offset of label in sector */
 #endif