sdcard_image bbclass: default to 4GiB, but use 2GiB for beaglebone

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/classes/sdcard_image.bbclass b/classes/sdcard_image.bbclass
index be7ab3b9..41891fe5 100644
--- a/classes/sdcard_image.bbclass
+++ b/classes/sdcard_image.bbclass
@@ -12,6 +12,10 @@ LOOPDEV ?= "/dev/loop1"
 LOOPDEV_BOOT ?= "/dev/loop2"
 LOOPDEV_FS ?= "/dev/loop3"
 
+# Default to 4GiB images, but use 2GiB images for beaglebone
+SDIMG_SIZE ?= "444" 
+SDIMG_SIZE_beaglebone = "222"
+
 IMAGE_CMD_sdimg () {
         SDIMG=${WORKDIR}/sd.img
 
@@ -29,7 +33,7 @@ IMAGE_CMD_sdimg () {
 
         # If an SD image is already present, reuse and reformat it
         if [ ! -e ${SDIMG} ] ; then
-                dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=222
+                dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE}
         fi
 
         ${LOSETUP} ${LOOPDEV} ${SDIMG}