1# SPDX-License-Identifier: GPL-2.0 2 3# Create $(fwdir) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a 4# leading /, it's relative to $(srctree). 5fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR)) 6fwdir := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) 7 8obj-y := $(addsuffix .gen.o, $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))) 9 10FWNAME = $(patsubst $(obj)/%.gen.S,%,$@) 11FWSTR = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME)))) 12ASM_WORD = $(if $(CONFIG_64BIT),.quad,.long) 13ASM_ALIGN = $(if $(CONFIG_64BIT),3,2) 14PROGBITS = $(if $(CONFIG_ARM),%,@)progbits 15 16filechk_fwbin = \ 17 echo "/* Generated by $(src)/Makefile */" ;\ 18 echo " .section .rodata" ;\ 19 echo " .p2align $(ASM_ALIGN)" ;\ 20 echo "_fw_$(FWSTR)_bin:" ;\ 21 echo " .incbin \"$(fwdir)/$(FWNAME)\"" ;\ 22 echo "_fw_end:" ;\ 23 echo " .section .rodata.str,\"aMS\",$(PROGBITS),1" ;\ 24 echo " .p2align $(ASM_ALIGN)" ;\ 25 echo "_fw_$(FWSTR)_name:" ;\ 26 echo " .string \"$(FWNAME)\"" ;\ 27 echo " .section .builtin_fw,\"a\",$(PROGBITS)" ;\ 28 echo " .p2align $(ASM_ALIGN)" ;\ 29 echo " $(ASM_WORD) _fw_$(FWSTR)_name" ;\ 30 echo " $(ASM_WORD) _fw_$(FWSTR)_bin" ;\ 31 echo " $(ASM_WORD) _fw_end - _fw_$(FWSTR)_bin" 32 33$(obj)/%.gen.S: FORCE 34 $(call filechk,fwbin) 35 36# The .o files depend on the binaries directly; the .S files don't. 37$(addprefix $(obj)/, $(obj-y)): $(obj)/%.gen.o: $(fwdir)/% 38 39targets := $(patsubst $(obj)/%,%, \ 40 $(shell find $(obj) -name \*.gen.S 2>/dev/null)) 41