From 130cd73a15b989816bcb7cc813c914d93568efde Mon Sep 17 00:00:00 2001
From: Doug Rabson <dfr@FreeBSD.org>
Date: Mon, 17 Aug 1998 07:43:54 +0000
Subject: [PATCH] Teach disklabel how to install a bootstrap on an alpha with
 SRM console.

---
 sbin/bsdlabel/bsdlabel.c   | 39 ++++++++++++++++++++++++++++++++++++--
 sbin/disklabel/disklabel.c | 39 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 74 insertions(+), 4 deletions(-)

diff --git a/sbin/bsdlabel/bsdlabel.c b/sbin/bsdlabel/bsdlabel.c
index df940e9be326..bd55781fd27d 100644
--- a/sbin/bsdlabel/bsdlabel.c
+++ b/sbin/bsdlabel/bsdlabel.c
@@ -46,7 +46,7 @@ static char sccsid[] = "@(#)disklabel.c	8.2 (Berkeley) 1/7/94";
 /* from static char sccsid[] = "@(#)disklabel.c	1.2 (Symmetric) 11/28/85"; */
 #endif
 static const char rcsid[] =
-	"$Id: disklabel.c,v 1.16 1998/07/20 11:34:06 bde Exp $";
+	"$Id: disklabel.c,v 1.17 1998/07/25 16:19:10 bde Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -89,7 +89,7 @@ static const char rcsid[] =
 #ifdef tahoe
 #define	NUMBOOT	0
 #else
-#if defined(hp300) || defined(hp800)
+#if defined(hp300) || defined(hp800) || defined(__alpha__)
 #define	NUMBOOT	1
 #else
 #define	NUMBOOT	2
@@ -398,6 +398,14 @@ writelabel(f, boot, lp)
 #endif
 	int flag;
 
+#ifdef __alpha__
+	/*
+	 * Generate the bootblock checksum for the SRM console.
+	 */
+	u_long *p, sum;
+	int i;
+#endif
+
 	setbootflag(lp);
 	lp->d_magic = DISKMAGIC;
 	lp->d_magic2 = DISKMAGIC;
@@ -423,6 +431,13 @@ writelabel(f, boot, lp)
 		 * disable after writing.
 		 */
 		flag = 1;
+
+#ifdef __alpha__
+		for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
+		sum += p[i];
+		p[63] = sum;
+#endif
+
 		if (ioctl(f, DIOCWLABEL, &flag) < 0)
 			warn("ioctl DIOCWLABEL");
 		if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
@@ -661,9 +676,29 @@ makebootarea(boot, dp, f)
 	if (read(b, &boot[dp->d_secsize],
 		 (int)(dp->d_bbsize-dp->d_secsize)) < 0)
 		err(4, "%s", bootxx);
+#else
+#ifdef __alpha__
+	{
+
+	    /*
+	     * On the alpha, the primary bootstrap starts at the
+	     * second sector of the boot area.  The first sector
+	     * contains the label and must be edited to contain the
+	     * size and location of the primary bootstrap.
+	     */
+	    int n = read(b, boot + dp->d_secsize, (int)dp->d_bbsize);
+	    u_long *lp;
+	    if (n < 0)
+		err(4, "%s", xxboot);
+	    lp = (u_long *) (boot + 480);
+	    lp[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
+	    lp[1] = 1;		/* start at sector 1 */
+	    lp[2] = 0;		/* flags (must be zero) */
+	}
 #else
 	if (read(b, boot, (int)dp->d_bbsize) < 0)
 		err(4, "%s", xxboot);
+#endif
 	if (fstat(b, &sb) != 0)
 		err(4, "%s", xxboot);
 	bootsize = (int)sb.st_size - dp->d_bbsize;
diff --git a/sbin/disklabel/disklabel.c b/sbin/disklabel/disklabel.c
index df940e9be326..bd55781fd27d 100644
--- a/sbin/disklabel/disklabel.c
+++ b/sbin/disklabel/disklabel.c
@@ -46,7 +46,7 @@ static char sccsid[] = "@(#)disklabel.c	8.2 (Berkeley) 1/7/94";
 /* from static char sccsid[] = "@(#)disklabel.c	1.2 (Symmetric) 11/28/85"; */
 #endif
 static const char rcsid[] =
-	"$Id: disklabel.c,v 1.16 1998/07/20 11:34:06 bde Exp $";
+	"$Id: disklabel.c,v 1.17 1998/07/25 16:19:10 bde Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -89,7 +89,7 @@ static const char rcsid[] =
 #ifdef tahoe
 #define	NUMBOOT	0
 #else
-#if defined(hp300) || defined(hp800)
+#if defined(hp300) || defined(hp800) || defined(__alpha__)
 #define	NUMBOOT	1
 #else
 #define	NUMBOOT	2
@@ -398,6 +398,14 @@ writelabel(f, boot, lp)
 #endif
 	int flag;
 
+#ifdef __alpha__
+	/*
+	 * Generate the bootblock checksum for the SRM console.
+	 */
+	u_long *p, sum;
+	int i;
+#endif
+
 	setbootflag(lp);
 	lp->d_magic = DISKMAGIC;
 	lp->d_magic2 = DISKMAGIC;
@@ -423,6 +431,13 @@ writelabel(f, boot, lp)
 		 * disable after writing.
 		 */
 		flag = 1;
+
+#ifdef __alpha__
+		for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++)
+		sum += p[i];
+		p[63] = sum;
+#endif
+
 		if (ioctl(f, DIOCWLABEL, &flag) < 0)
 			warn("ioctl DIOCWLABEL");
 		if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) {
@@ -661,9 +676,29 @@ makebootarea(boot, dp, f)
 	if (read(b, &boot[dp->d_secsize],
 		 (int)(dp->d_bbsize-dp->d_secsize)) < 0)
 		err(4, "%s", bootxx);
+#else
+#ifdef __alpha__
+	{
+
+	    /*
+	     * On the alpha, the primary bootstrap starts at the
+	     * second sector of the boot area.  The first sector
+	     * contains the label and must be edited to contain the
+	     * size and location of the primary bootstrap.
+	     */
+	    int n = read(b, boot + dp->d_secsize, (int)dp->d_bbsize);
+	    u_long *lp;
+	    if (n < 0)
+		err(4, "%s", xxboot);
+	    lp = (u_long *) (boot + 480);
+	    lp[0] = (n + dp->d_secsize - 1) / dp->d_secsize;
+	    lp[1] = 1;		/* start at sector 1 */
+	    lp[2] = 0;		/* flags (must be zero) */
+	}
 #else
 	if (read(b, boot, (int)dp->d_bbsize) < 0)
 		err(4, "%s", xxboot);
+#endif
 	if (fstat(b, &sb) != 0)
 		err(4, "%s", xxboot);
 	bootsize = (int)sb.st_size - dp->d_bbsize;