Add top-level Makefile + @fincs 's linker script fixes

Makefile

@@ -0,0 +1,29 @@
+ifneq ($(strip $(shell firmtool -v 2>&1 | grep usage)),)
+$(error "Please install firmtool v1.1 or greater")
+endif
+
+NAME		:=	$(notdir $(CURDIR))
+REVISION	:=	$(shell git describe --tags --match v[0-9]* --abbrev=8 | sed 's/-[0-9]*-g/-/')
+
+SUBFOLDERS	:=	sysmodules arm11 arm9 k11_extension
+
+.PHONY:	all release clean $(SUBFOLDERS)
+
+all:		boot.firm
+
+release:	$(NAME)$(REVISION).zip
+
+clean:
+	@$(foreach dir, $(SUBFOLDERS), $(MAKE) -C $(dir) clean &&) true
+	@rm -rf *.firm *.zip
+
+$(NAME)$(REVISION).zip:	boot.firm exception_dump_parser
+	@zip -r $@ $^ -x "*.DS_Store*" "*__MACOSX*"
+
+boot.firm:	$(SUBFOLDERS)
+	@firmtool build $@ -D sysmodules/sysmodules.bin arm11/arm11.elf arm9/arm9.elf k11_extension/k11_extension.elf \
+	-A 0x18180000 0x18000000 -C XDMA XDMA NDMA XDMA
+	@echo built... $(notdir $@)
+
+$(SUBFOLDERS):
+	@$(MAKE) -C $@ all