projects / GitHub / mt8127 / android_kernel_alcatel_ttab.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 | ||
| d172e7f5 DW |
12 | # If CONFIG_FIRMWARE_IN_KERNEL is not set, then don't include any firmware |
| 13 | ifneq ($(CONFIG_FIRMWARE_IN_KERNEL),y) | |
| 14 | fw-shipped-y := | |
| 15 | endif | |
| 16 | ||
| 4d2acfbf DW |
17 | firmware-y := $(fw-external-y) $(fw-shipped-y) |
| 18 | firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) | |
| 19 | ||
| 20 | quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) | |
| 21 | cmd_mkdir = mkdir -p $@ | |
| 22 | ||
| 23 | quiet_cmd_ihex = IHEX $@ | |
| 24 | cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ | |
| 25 | ||
| 26 | quiet_cmd_fwbin = MK_FW $@ | |
| 27 | cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ | |
| 28 | FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ | |
| 29 | firmware/%.gen.S,%,$@))))"; \ | |
| 30 | ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \ | |
| 31 | ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \ | |
| 32 | PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \ | |
| 33 | echo "/* Generated by firmware/Makefile */" > $@;\ | |
| 34 | echo " .section .rodata" >>$@;\ | |
| 35 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 36 | echo "_fw_$${FWSTR}_bin:" >>$@;\ | |
| 37 | echo " .incbin \"$(2)\"" >>$@;\ | |
| 38 | echo "_fw_end:" >>$@;\ | |
| 39 | echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\ | |
| 40 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 41 | echo "_fw_$${FWSTR}_name:" >>$@;\ | |
| 42 | echo " .string \"$$FWNAME\"" >>$@;\ | |
| 43 | echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\ | |
| 44 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 45 | echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\ | |
| 46 | echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\ | |
| 47 | echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@; | |
| 48 | ||
| 49 | # One of these files will change, or come into existence, whenever | |
| 50 | # the configuration changes between 32-bit and 64-bit. The .S files | |
| 51 | # need to change when that happens. | |
| 52 | wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \ | |
| 53 | include/config/ppc32.h include/config/ppc64.h \ | |
| 54 | include/config/superh32.h include/config/superh64.h \ | |
| 55 | include/config/x86_32.h include/config/x86_64.h) | |
| 56 | ||
| 57 | # Workaround for make < 3.81, where .SECONDEXPANSION doesn't work. | |
| 58 | # It'll end up depending on these targets, so make them a PHONY rule which | |
| 59 | # depends on _all_ the directories in $(firmware-dirs), and it'll work out OK. | |
| 60 | PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%) | |
| 61 | $(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs) | |
| 62 | @true | |
| 63 | ||
| 64 | # For the $$(dir %) trick, where we need % to be expanded first. | |
| 65 | .SECONDEXPANSION: | |
| 66 | ||
| 67 | $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ | |
| 68 | | $(objtree)/$$(dir %) | |
| 69 | $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) | |
| 70 | $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ | |
| 71 | include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) | |
| 72 | $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) | |
| 73 | ||
| 74 | # The .o files depend on the binaries directly; the .S files don't. | |
| 75 | $(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % | |
| 76 | $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% | |
| 77 | ||
| 78 | $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) | |
| 79 | $(call cmd,ihex) | |
| 80 | ||
| 81 | $(firmware-dirs): | |
| 82 | $(call cmd,mkdir) | |
| 83 | ||
| 84 | obj-y := $(patsubst %,%.gen.o, $(firmware-y)) | |
| 85 | ||
| 86 | # Remove .S files and binaries created from ihex | |
| 87 | # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) | |
| 88 | targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ | |
| 89 | $(shell find $(obj) -name \*.gen.S 2>/dev/null)) | |
| 90 | ||
| 91 | # Without this, built-in.o won't be created when it's empty, and the | |
| 92 | # final vmlinux link will fail. | |
| 93 | obj-n := dummy |