projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d2acfbf DW |
1 | # |
| 2 | # kbuild file for firmware/ | |
| 3 | # | |
| 4 | ||
| 5 | # Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a | |
| 6 | # leading /, it's relative to $(srctree). | |
| 7 | fwdir := $(subst ",,$(CONFIG_EXTRA_FIRMWARE_DIR)) | |
| 8 | fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) | |
| 9 | ||
| 10 | fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) | |
| 11 | ||
| 88ecf814 DW |
12 | # There are three cases to care about: |
| 13 | # 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should | |
| 14 | # include the firmware files to include, according to .config | |
| 15 | # 2. 'make modules_install', which will install firmware for modules, and | |
| 16 | # _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n | |
| 17 | # 3. 'make firmware_install', which installs all firmware, unconditionally. | |
| d172e7f5 | 18 | |
| 88ecf814 DW |
19 | # For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be |
| 20 | # accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all). | |
| 21 | # But be aware that the config file might not be included at all. | |
| 22 | ||
| 23 | ||
| 24 | fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-) | |
| 25 | ||
| 26 | # Directories which we _might_ need to create, so we have a rule for them. | |
| 27 | firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all)))) | |
| 4d2acfbf DW |
28 | |
| 29 | quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) | |
| 30 | cmd_mkdir = mkdir -p $@ | |
| 31 | ||
| 32 | quiet_cmd_ihex = IHEX $@ | |
| 33 | cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ | |
| 34 | ||
| 35 | quiet_cmd_fwbin = MK_FW $@ | |
| 36 | cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ | |
| 37 | FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ | |
| 38 | firmware/%.gen.S,%,$@))))"; \ | |
| 39 | ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \ | |
| 40 | ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \ | |
| 41 | PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \ | |
| 42 | echo "/* Generated by firmware/Makefile */" > $@;\ | |
| 43 | echo " .section .rodata" >>$@;\ | |
| 44 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 45 | echo "_fw_$${FWSTR}_bin:" >>$@;\ | |
| 46 | echo " .incbin \"$(2)\"" >>$@;\ | |
| 47 | echo "_fw_end:" >>$@;\ | |
| 48 | echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\ | |
| 49 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 50 | echo "_fw_$${FWSTR}_name:" >>$@;\ | |
| 51 | echo " .string \"$$FWNAME\"" >>$@;\ | |
| 52 | echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\ | |
| 53 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 54 | echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\ | |
| 55 | echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\ | |
| 56 | echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@; | |
| 57 | ||
| 58 | # One of these files will change, or come into existence, whenever | |
| 59 | # the configuration changes between 32-bit and 64-bit. The .S files | |
| 60 | # need to change when that happens. | |
| 61 | wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \ | |
| 62 | include/config/ppc32.h include/config/ppc64.h \ | |
| 63 | include/config/superh32.h include/config/superh64.h \ | |
| 64 | include/config/x86_32.h include/config/x86_64.h) | |
| 65 | ||
| 66 | # Workaround for make < 3.81, where .SECONDEXPANSION doesn't work. | |
| 67 | # It'll end up depending on these targets, so make them a PHONY rule which | |
| 68 | # depends on _all_ the directories in $(firmware-dirs), and it'll work out OK. | |
| 69 | PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%) | |
| 70 | $(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs) | |
| 71 | @true | |
| 72 | ||
| 73 | # For the $$(dir %) trick, where we need % to be expanded first. | |
| 74 | .SECONDEXPANSION: | |
| 75 | ||
| 76 | $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ | |
| 77 | | $(objtree)/$$(dir %) | |
| 78 | $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) | |
| 79 | $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ | |
| 80 | include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) | |
| 81 | $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) | |
| 82 | ||
| 83 | # The .o files depend on the binaries directly; the .S files don't. | |
| 84 | $(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % | |
| 85 | $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% | |
| 86 | ||
| 87 | $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) | |
| 88 | $(call cmd,ihex) | |
| 89 | ||
| 90 | $(firmware-dirs): | |
| 91 | $(call cmd,mkdir) | |
| 92 | ||
| 88ecf814 DW |
93 | obj-y += $(patsubst %,%.gen.o, $(fw-external-y)) |
| 94 | obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y)) | |
| 4d2acfbf DW |
95 | |
| 96 | # Remove .S files and binaries created from ihex | |
| 97 | # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) | |
| 98 | targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ | |
| 99 | $(shell find $(obj) -name \*.gen.S 2>/dev/null)) | |
| 100 | ||
| 101 | # Without this, built-in.o won't be created when it's empty, and the | |
| 102 | # final vmlinux link will fail. | |
| 103 | obj-n := dummy |