bootimg: Fix a math thinko in the block count calculation

Fixes [YOCTO #1852] ... again.

The conversion from sectors to blocks was multiplying by 2 instead
of dividing by 2. Blocks are 1024 bytes, sectors are 512 bytes. The
result was images being much larger than intended.

Reported-by: Tom Zanussi <tom.zanussi@intel.com>
(From OE-Core rev: b35384fa3ca96b31c63d764322215abced2066e4)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Backported to edison by Darren Hart.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/bootimg.bbclass b/meta/classes/bootimg.bbclass
index c2d43c86ee..489819b815 100644
--- a/meta/classes/bootimg.bbclass
+++ b/meta/classes/bootimg.bbclass
@@ -92,7 +92,8 @@ build_boot_bin() {
         SECTORS=$(expr $SECTORS + $(expr $DIR_SECTORS + $FAT_SECTORS))
 
         # Determine the final size in blocks accounting for some padding
-        BLOCKS=$(expr $(expr $SECTORS \* 2) + ${BOOTIMG_EXTRA_SPACE})
+        BLOCKS=$(expr $(expr $SECTORS / 2) + ${BOOTIMG_EXTRA_SPACE})
+
 
         # Ensure total sectors is an integral number of sectors per
         # track or mcopy will complain. Sectors are 512 bytes, and we