binman: Add a way to enable debugging from the build
When the build fails due to something wrong in binman it is sometimes
useful to get a full backtrace showing the location of the failure. Add
a BINMAN_DEBUG environment variable to support this along with some
documentation.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/Makefile b/Makefile
index 552687d..aeb1c14 100644
--- a/Makefile
+++ b/Makefile
@@ -1048,9 +1048,11 @@
# binman
# ---------------------------------------------------------------------------
+# Use 'make BINMAN_DEBUG=1' to enable debugging
quiet_cmd_binman = BINMAN $@
-cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
- -I . -I $(srctree)/board/$(BOARDDIR) $<
+cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \
+ -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
+ $(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $<
OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
diff --git a/tools/binman/README b/tools/binman/README
index b64dedf..04ed2b79 100644
--- a/tools/binman/README
+++ b/tools/binman/README
@@ -723,6 +723,12 @@
the DTC environment variable. This can be useful when the system dtc is too
old.
+To enable a full backtrace and other debugging features in binman, pass
+BINMAN_DEBUG=1 to your build:
+
+ make sandbox_defconfig
+ make BINMAN_DEBUG=1
+
History / Credits
-----------------