u-boot: fix mainline not providing a nand target

Our downstream U-Boot provides a u-boot-nand.imx target prepending the
binary with a 1k block for easier flashing while the mainline U-Boot
does not.

Mimic the behaviour in a do_compile_append.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/recipes-bsp/u-boot-mainline/u-boot_%.bbappend b/recipes-bsp/u-boot-mainline/u-boot_%.bbappend
new file mode 100644
index 0000000..996f4e9
--- /dev/null
+++ b/recipes-bsp/u-boot-mainline/u-boot_%.bbappend
@@ -0,0 +1,14 @@
+# U-Boot is flashed 1k into a NAND block, create a binary which prepends
+# U-boot with 1k of zeros to ease flashing
+
+nand_padding () {
+    dd bs=1024 count=1 if=/dev/zero | cat - u-boot.imx > u-boot-nand.imx
+}
+
+do_compile_append_colibri-imx6ull () {
+    nand_padding
+}
+
+do_compile_append_colibri-imx7 () {
+    nand_padding
+}