add initial dmb fw. improve makefile infrastructure.

firmware/Makefile

@@ -1,11 +1,33 @@
-DIRS = lib fw
+FW_DIRS          = $(wildcard fw_*)
+COMMON_DIRS      = lib
+PROJECT_DEFAULT  = atlys
+PROJECT_NAME    ?= $(PROJECT_DEFAULT)
+PROJECT_DIR      = fw_$(PROJECT_NAME)
+DIRS             = $(COMMON_DIRS) $(PROJECT_DIR) 
 
-all:
-	@for dir in $(DIRS); do \
-		$(MAKE) -C $$dir || exit 1; \
-	done
+##### PRINT ###################################
+PW=\033[1m\033[0m
+GR=\E[40;32m
+WH=\E[40;37m
+B=\033[1m
+pr_info = "$(B) $(GR)[$(1)]\t $(WH)$(2)$(PW)"
 
-clean:
-	@for dir in $(DIRS); do \
-		$(MAKE) -C $$dir clean || exit 1; \
-	done
+##### BUILD RULES #############################
+.PHONY: help build clean build_all distclean
+
+help:
+	@echo -e "$$ make PROJECT_NAME=<top-file> <rule>" 
+	@echo -e "\tprojects (*=default) .. : $(shell echo $(FW_DIRS) | sed 's/fw_//g' | sed 's/$(PROJECT_DEFAULT)/\*$(PROJECT_DEFAULT)/')"
+	@echo -e "\trule .................. : help build clean build_all distclean"
+
+build: $(DIRS)
+	@$(foreach dir,$^, echo -e $(call pr_info,MK,Building $(dir)); $(MAKE) -C $(dir) || exit 1;)
+
+clean: $(DIRS)
+	@$(foreach dir,$^, echo -e $(call pr_info,MK,Cleaning $(dir)); $(MAKE) -C $(dir) clean || exit 1;)
+
+build_all: $(COMMON_DIRS) $(FW_DIRS)
+	@$(foreach dir,$^, echo -e $(call pr_info,MK,Building $(dir)); $(MAKE) -C $(dir) || exit 1;)
+
+distclean: $(COMMON_DIRS) $(FW_DIRS)
+	@$(foreach dir,$^, echo -e $(call pr_info,MK,Cleaning $(dir)); $(MAKE) -C $(dir) clean || exit 1;)