This command enables factory image generation for Cameo boards. On
upgrade the vendor firmware will check the size of the provided image
and if a specific string is located at the end of the binary.
cameo-factory will generate an image that the vendor firmware accepts.
Tested on a D-Link DIR-825 C1 with vendor firmwares 3.01 and 3.04.
Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
mv $@.new $@
endef
+# blow up binary to given size and put a given string at its end:
+# cameo-factory <size[k]> <string>
+define Build/cameo-factory
+ factory_stamp=$(word 2,$(1)); \
+ ((reduced_size=$(subst k,*1024,$(word 1,$(1)))-$${#factory_stamp})); \
+ ( \
+ dd if=$@ bs=$$reduced_size conv=sync; \
+ echo -n $$factory_stamp; \
+ ) > $@.new && \
+ mv $@.new $@
+endef
+
define Build/eva-image
$(STAGING_DIR_HOST)/bin/lzma2eva $(KERNEL_LOADADDR) $(KERNEL_LOADADDR) $@ $@.new
mv $@.new $@