-fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
-
-fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))
-
-quiet_cmd_fwbin = MK_FW $@
- cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \
- FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \
- firmware/%.gen.S,%,$@))))"; \
- ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \
- ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \
- PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \
- echo "/* Generated by firmware/Makefile */" > $@;\
- echo " .section .rodata" >>$@;\
- echo " .p2align $${ASM_ALIGN}" >>$@;\
- echo "_fw_$${FWSTR}_bin:" >>$@;\
- echo " .incbin \"$(2)\"" >>$@;\
- echo "_fw_end:" >>$@;\
- echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\
- echo " .p2align $${ASM_ALIGN}" >>$@;\
- echo "_fw_$${FWSTR}_name:" >>$@;\
- echo " .string \"$$FWNAME\"" >>$@;\
- echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\
- echo " .p2align $${ASM_ALIGN}" >>$@;\
- echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\
- echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\
- echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@;
-
-# One of these files will change, or come into existence, whenever
-# the configuration changes between 32-bit and 64-bit. The .S files
-# need to change when that happens.
-wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \
- include/config/ppc32.h include/config/ppc64.h \
- include/config/superh32.h include/config/superh64.h \
- include/config/x86_32.h include/config/x86_64.h \
- firmware/Makefile)
-
-$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \
- include/config/extra/firmware/dir.h
- $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))
+fwdir := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
+
+obj-y := $(addsuffix .gen.o, $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE)))
+
+FWNAME = $(patsubst $(obj)/%.gen.S,%,$@)
+FWSTR = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME))))
+ASM_WORD = $(if $(CONFIG_64BIT),.quad,.long)
+ASM_ALIGN = $(if $(CONFIG_64BIT),3,2)
+PROGBITS = $(if $(CONFIG_ARM),%,@)progbits
+
+filechk_fwbin = { \
+ echo "/* Generated by $(src)/Makefile */" ;\
+ echo " .section .rodata" ;\
+ echo " .p2align $(ASM_ALIGN)" ;\
+ echo "_fw_$(FWSTR)_bin:" ;\
+ echo " .incbin \"$(fwdir)/$(FWNAME)\"" ;\
+ echo "_fw_end:" ;\
+ echo " .section .rodata.str,\"aMS\",$(PROGBITS),1" ;\
+ echo " .p2align $(ASM_ALIGN)" ;\
+ echo "_fw_$(FWSTR)_name:" ;\
+ echo " .string \"$(FWNAME)\"" ;\
+ echo " .section .builtin_fw,\"a\",$(PROGBITS)" ;\
+ echo " .p2align $(ASM_ALIGN)" ;\
+ echo " $(ASM_WORD) _fw_$(FWSTR)_name" ;\
+ echo " $(ASM_WORD) _fw_$(FWSTR)_bin" ;\
+ echo " $(ASM_WORD) _fw_end - _fw_$(FWSTR)_bin" ;\
+}
+
+$(obj)/%.gen.S: FORCE
+ $(call filechk,fwbin)