projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| df85b2d7 MT |
2 | # |
| 3 | # kbuild file for firmware/ | |
| 4 | # | |
| 5 | ||
| 6 | # Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a | |
| 7 | # leading /, it's relative to $(srctree). | |
| 8 | fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR)) | |
| 9 | fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) | |
| 10 | ||
| 11 | fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE)) | |
| 12 | ||
| 13 | quiet_cmd_fwbin = MK_FW $@ | |
| 14 | cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ | |
| 15 | FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ | |
| 16 | firmware/%.gen.S,%,$@))))"; \ | |
| 17 | ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \ | |
| 18 | ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \ | |
| 19 | PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \ | |
| 20 | echo "/* Generated by firmware/Makefile */" > $@;\ | |
| 21 | echo " .section .rodata" >>$@;\ | |
| 22 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 23 | echo "_fw_$${FWSTR}_bin:" >>$@;\ | |
| 24 | echo " .incbin \"$(2)\"" >>$@;\ | |
| 25 | echo "_fw_end:" >>$@;\ | |
| 26 | echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\ | |
| 27 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 28 | echo "_fw_$${FWSTR}_name:" >>$@;\ | |
| 29 | echo " .string \"$$FWNAME\"" >>$@;\ | |
| 30 | echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\ | |
| 31 | echo " .p2align $${ASM_ALIGN}" >>$@;\ | |
| 32 | echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\ | |
| 33 | echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\ | |
| 34 | echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@; | |
| 35 | ||
| 36 | # One of these files will change, or come into existence, whenever | |
| 37 | # the configuration changes between 32-bit and 64-bit. The .S files | |
| 38 | # need to change when that happens. | |
| 39 | wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \ | |
| 40 | include/config/ppc32.h include/config/ppc64.h \ | |
| 41 | include/config/superh32.h include/config/superh64.h \ | |
| 42 | include/config/x86_32.h include/config/x86_64.h \ | |
| 43 | firmware/Makefile) | |
| 44 | ||
| 45 | $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ | |
| 46 | include/config/extra/firmware/dir.h | |
| 47 | $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) | |
| 48 | ||
| 49 | # The .o files depend on the binaries directly; the .S files don't. | |
| 50 | $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% | |
| 51 | ||
| 52 | obj-y += $(patsubst %,%.gen.o, $(fw-external-y)) | |
| 53 | ||
| 54 | ifeq ($(KBUILD_SRC),) | |
| 55 | # Makefile.build only creates subdirectories for O= builds, but external | |
| 56 | # firmware might live outside the kernel source tree | |
| 57 | _dummy := $(foreach d,$(addprefix $(obj)/,$(dir $(fw-external-y))), $(shell [ -d $(d) ] || mkdir -p $(d))) | |
| 58 | endif | |
| 59 | ||
| 60 | targets := $(patsubst $(obj)/%,%, \ | |
| 61 | $(shell find $(obj) -name \*.gen.S 2>/dev/null)) |