blob: d3d7578e2c451b99845be50c1b8877f66000e251 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001# SPDX-License-Identifier: GPL-2.0
Markus Trippelsdorfdf85b2d2017-09-16 11:01:16 +02002#
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).
8fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR))
9fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
10
11fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))
12
13quiet_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 */" > $@;\
21 echo " .section .rodata" >>$@;\
Jari Ruusu8d9fd1f2020-01-12 15:00:53 +020022 echo " .p2align 4" >>$@;\
Markus Trippelsdorfdf85b2d2017-09-16 11:01:16 +020023 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.
39wordsize_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
52obj-y += $(patsubst %,%.gen.o, $(fw-external-y))
53
54ifeq ($(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)))
58endif
59
60targets := $(patsubst $(obj)/%,%, \
61 $(shell find $(obj) -name \*.gen.S 2>/dev/null))