image_types_fsl.bbclass: Add U-Boot SPL support

If the SPL_BINARY value is not empty, then the class will use
an alternative code path for copying U-Boot on the SD card.
u-boot.img is used (not .imx), and the SPL binary is prepended.
With empty SPL_BINARY values, the behavior is just like before.

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/classes/image_types_fsl.bbclass b/classes/image_types_fsl.bbclass
index 7fd6a29..443abf7 100644
--- a/classes/image_types_fsl.bbclass
+++ b/classes/image_types_fsl.bbclass
@@ -115,7 +115,12 @@ generate_imx_sdcard () {
                 exit 1
                 ;;
                 u-boot)
-                dd if=${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.${UBOOT_SUFFIX_SDCARD} of=${SDCARD} conv=notrunc seek=2 skip=${UBOOT_PADDING} bs=512
+                if [ -n "${SPL_BINARY}" ]; then
+                        dd if=${DEPLOY_DIR_IMAGE}/${SPL_BINARY} of=${SDCARD} conv=notrunc seek=2 bs=512
+                        dd if=${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.${UBOOT_SUFFIX_SDCARD} of=${SDCARD} conv=notrunc seek=42 bs=1K
+                else
+                        dd if=${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.${UBOOT_SUFFIX_SDCARD} of=${SDCARD} conv=notrunc seek=2 skip=${UBOOT_PADDING} bs=512
+                fi
                 ;;
                 barebox)
                 dd if=${DEPLOY_DIR_IMAGE}/barebox-${MACHINE}.bin of=${SDCARD} conv=notrunc seek=1 skip=1 bs=512