When installing boot blocks into an Alpha BSD label, setup the location,

length, and flags fields at the end of the SRM boot sector so that SRM can
find the bootstrap code.  This fixes bsdlabel -m alpha to generate bootable
disklabels.

Reviewed by:	phk

1 files changed, 10 insertions, 0 deletions

diff --git a/sbin/bsdlabel/bsdlabel.c b/sbin/bsdlabel/bsdlabel.c
index 094e84a..8ad7def 100644
--- a/sbin/bsdlabel/bsdlabel.c
+++ b/sbin/bsdlabel/bsdlabel.c
@@ -327,6 +327,7 @@ readboot(void)
 {
 	int fd, i;
 	struct stat st;
+	uint64_t *p;
 
 	if (xxboot == NULL)
 		xxboot = "/boot/boot";
@@ -338,6 +339,15 @@ readboot(void)
 		i = read(fd, bootarea + 512, st.st_size);
 		if (i != st.st_size)
 			err(1, "read error %s", xxboot);
+
+		/*
+		 * Set the location and length so SRM can find the
+		 * boot blocks.
+		 */
+		p = (uint64_t *)bootarea;
+		p[60] = (st.st_size + secsize - 1) / secsize;
+		p[61] = 1;
+		p[62] = 0;
 		return;
 	} else if ((!alphacksum) && st.st_size <= BBSIZE) {
 		i = read(fd, bootarea, st.st_size);