# # kbuild file for firmware/ # # Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a # leading /, it's relative to $(srctree). fwdir := $(subst ",,$(CONFIG_EXTRA_FIRMWARE_DIR)) fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) # There are three cases to care about: # 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should # include the firmware files to include, according to .config # 2. 'make modules_install', which will install firmware for modules, and # _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n # 3. 'make firmware_install', which installs all firmware, unconditionally. # For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be # accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all). # But be aware that the config file might not be included at all. fw-shipped-$(CONFIG_DVB_TTUSB_BUDGET) += ttusb-budget/dspbootcode.bin fw-shipped-$(CONFIG_SMCTR) += tr_smctr.bin fw-shipped-$(CONFIG_SND_KORG1212) += korg/k1212.dsp fw-shipped-$(CONFIG_SND_MAESTRO3) += ess/maestro3_assp_kernel.fw \ ess/maestro3_assp_minisrc.fw fw-shipped-$(CONFIG_SND_YMFPCI) += yamaha/ds1_ctrl.fw yamaha/ds1_dsp.fw \ yamaha/ds1e_ctrl.fw fw-shipped-$(CONFIG_USB_KAWETH) += kaweth/new_code.bin kaweth/trigger_code.bin \ kaweth/new_code_fix.bin \ kaweth/trigger_code_fix.bin fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-) # Directories which we _might_ need to create, so we have a rule for them. firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all)))) quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) cmd_mkdir = mkdir -p $@ quiet_cmd_ihex = IHEX $@ cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ quiet_cmd_ihex2fw = IHEX2FW $@ cmd_ihex2fw = $(objtree)/$(obj)/ihex2fw $< $@ quiet_cmd_h16tofw = H16TOFW $@ cmd_h16tofw = $(objtree)/$(obj)/ihex2fw -w $< $@ 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) # Workaround for make < 3.81, where .SECONDEXPANSION doesn't work. # It'll end up depending on these targets, so make them a PHONY rule which # depends on _all_ the directories in $(firmware-dirs), and it'll work out OK. PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%) $(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs) @true # For the $$(dir %) trick, where we need % to be expanded first. .SECONDEXPANSION: $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ | $(objtree)/$$(dir %) $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) # The .o files depend on the binaries directly; the .S files don't. $(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% # .ihex is used just as a simple way to hold binary files in a source tree # where binaries are frowned upon. They are directly converted with objcopy. $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) $(call cmd,ihex) # .HEX is also Intel HEX, but where the offset and length in each record # is actually meaningful, because the firmware has to be loaded in a certain # order rather than as a single binary blob. Thus, we convert them into our # more compact binary representation of ihex records () $(obj)/%.fw: $(obj)/%.HEX $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %) $(call cmd,ihex2fw) # .H16 is our own modified form of Intel HEX, with 16-bit length for records. $(obj)/%.fw: $(obj)/%.H16 $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %) $(call cmd,h16tofw) $(firmware-dirs): $(call cmd,mkdir) obj-y += $(patsubst %,%.gen.o, $(fw-external-y)) obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y)) # Remove .S files and binaries created from ihex # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ $(shell find $(obj) -name \*.gen.S 2>/dev/null)) # Without this, built-in.o won't be created when it's empty, and the # final vmlinux link will fail. obj-n := dummy hostprogs-y := ihex2fw