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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>
This commit is contained in:
Simon Glass 2018-11-06 15:21:31 -07:00
parent 048c6e8956
commit a3c005506a
2 changed files with 10 additions and 2 deletions
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6
Makefile
View File

@ -1048,9 +1048,11 @@ u-boot.ldr: u-boot
# 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

6
tools/binman/README
View File

@ -723,6 +723,12 @@ If you need to specify a particular device-tree compiler to use, you can define
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
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