binman: Allow external binaries to be missing
Sometimes it is useful to build an image even though external binaries are
not present. This allows the build system to continue to function without
these files, albeit not producing valid images.
U-Boot does with with ATF (ARM Trusted Firmware) today.
Add a new flag to binman to request this behaviour.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/tools/binman/README.entries b/tools/binman/README.entries
index 46f6ab1..f45f514 100644
--- a/tools/binman/README.entries
+++ b/tools/binman/README.entries
@@ -48,6 +48,9 @@
Note: This should not be used by itself. It is normally used as a parent
class by other entry types.
+If the file providing this blob is missing, binman can optionally ignore it
+and produce a broken image with a warning.
+
See 'blob' for Properties / Entry arguments.