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 | ||
12 | firmware-y := $(fw-external-y) $(fw-shipped-y) | |
13 | firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) | |
14 | ||
15 | quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) | |
16 | cmd_mkdir = mkdir -p $@ | |
17 | ||
18 | quiet_cmd_ihex = IHEX $@ | |
19 | cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ | |
20 | ||
21 | quiet_cmd_fwbin = MK_FW $@ | |
22 | cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ | |
23 | FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ | |
24 | firmware/%.gen.S,%,$@))))"; \ | |
25 | ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \ | |
26 | ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \ | |
27 | PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \ | |
28 | echo "/* Generated by firmware/Makefile */" > $@;\ | |
29 | echo " .section .rodata" >>$@;\ | |
30 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
31 | echo "_fw_$${FWSTR}_bin:" >>$@;\ | |
32 | echo " .incbin \"$(2)\"" >>$@;\ | |
33 | echo "_fw_end:" >>$@;\ | |
34 | echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\ | |
35 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
36 | echo "_fw_$${FWSTR}_name:" >>$@;\ | |
37 | echo " .string \"$$FWNAME\"" >>$@;\ | |
38 | echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\ | |
39 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
40 | echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\ | |
41 | echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\ | |
42 | echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@; | |
43 | ||
44 | # One of these files will change, or come into existence, whenever | |
45 | # the configuration changes between 32-bit and 64-bit. The .S files | |
46 | # need to change when that happens. | |
47 | wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \ | |
48 | include/config/ppc32.h include/config/ppc64.h \ | |
49 | include/config/superh32.h include/config/superh64.h \ | |
50 | include/config/x86_32.h include/config/x86_64.h) | |
51 | ||
52 | # Workaround for make < 3.81, where .SECONDEXPANSION doesn't work. | |
53 | # It'll end up depending on these targets, so make them a PHONY rule which | |
54 | # depends on _all_ the directories in $(firmware-dirs), and it'll work out OK. | |
55 | PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%) | |
56 | $(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs) | |
57 | @true | |
58 | ||
59 | # For the $$(dir %) trick, where we need % to be expanded first. | |
60 | .SECONDEXPANSION: | |
61 | ||
62 | $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ | |
63 | | $(objtree)/$$(dir %) | |
64 | $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) | |
65 | $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ | |
66 | include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) | |
67 | $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) | |
68 | ||
69 | # The .o files depend on the binaries directly; the .S files don't. | |
70 | $(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % | |
71 | $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% | |
72 | ||
73 | $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) | |
74 | $(call cmd,ihex) | |
75 | ||
76 | $(firmware-dirs): | |
77 | $(call cmd,mkdir) | |
78 | ||
79 | obj-y := $(patsubst %,%.gen.o, $(firmware-y)) | |
80 | ||
81 | # Remove .S files and binaries created from ihex | |
82 | # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) | |
83 | targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ | |
84 | $(shell find $(obj) -name \*.gen.S 2>/dev/null)) | |
85 | ||
86 | # Without this, built-in.o won't be created when it's empty, and the | |
87 | # final vmlinux link will fail. | |
88 | obj-n := dummy |