imx-base.inc: Provide a default value for SPL_BINARYtopic/fix-spl-binary

This fixes the build case when machine does not use SPL and does not set
it. We couldn't use dynamic expansion or we trigger a recursive
expansion so we opted to use an utility function to do the proper logic.

Fixes: f98059fe ("imx-base.inc: Allow use of SPL_BINARY variable inside wic images")
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 6 insertions, 0 deletions

diff --git a/conf/machine/include/utilities.inc b/conf/machine/include/utilities.inc
index e9695bde..f11b588b 100644
--- a/conf/machine/include/utilities.inc
+++ b/conf/machine/include/utilities.inc
@@ -20,3 +20,9 @@ def make_dtb_boot_files(d):
         return os.path.basename(dtb)
 
     return ' '.join([transform(dtb) for dtb in alldtbs.split() if dtb])
+
+def get_spl_binary(d):
+    imx_default_bootloader = d.get('IMX_DEFAULT_BOOTLOADER')
+    spl_binary = d.getVar("SPL_BINARY_pn-%s" % imx_default_bootloader)
+
+    return spl_binary or ""