2 # kbuild file for firmware/
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))
10 fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE
))
12 # There are three cases to care about:
13 # 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should
14 # include the firmware files to include, according to .config
15 # 2. 'make modules_install', which will install firmware for modules, and
16 # _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n
17 # 3. 'make firmware_install', which installs all firmware, unconditionally.
19 # For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be
20 # accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all).
21 # But be aware that the config file might not be included at all.
23 fw-shipped-
$(CONFIG_SND_KORG1212
) += korg
/k1212.dsp
24 fw-shipped-
$(CONFIG_SND_MAESTRO3
) += ess
/maestro3_assp_kernel.fw \
25 ess
/maestro3_assp_minisrc.fw
26 fw-shipped-
$(CONFIG_SND_YMFPCI
) += yamaha
/ds1_ctrl.fw yamaha
/ds1_dsp.fw \
29 fw-shipped-all
:= $(fw-shipped-y
) $(fw-shipped-m
) $(fw-shipped-
)
31 # Directories which we _might_ need to create, so we have a rule for them.
32 firmware-dirs
:= $(sort $(patsubst %,$(objtree
)/$(obj
)/%/,$(dir $(fw-external-y
) $(fw-shipped-all
))))
34 quiet_cmd_mkdir
= MKDIR
$(patsubst $(objtree
)/%,%,$@
)
35 cmd_mkdir
= mkdir
-p
$@
37 quiet_cmd_ihex
= IHEX
$@
38 cmd_ihex
= $(OBJCOPY
) -Iihex
-Obinary
$< $@
40 quiet_cmd_ihex2fw
= IHEX2FW
$@
41 cmd_ihex2fw
= $(objtree
)/$(obj
)/ihex2fw
$< $@
43 quiet_cmd_h16tofw
= H16TOFW
$@
44 cmd_h16tofw
= $(objtree
)/$(obj
)/ihex2fw
-w
$< $@
46 quiet_cmd_fwbin
= MK_FW
$@
47 cmd_fwbin
= FWNAME
="$(patsubst firmware/%.gen.S,%,$@)"; \
48 FWSTR
="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \
49 firmware/%.gen.S,%,$@))))"; \
50 ASM_WORD
=$(if
$(CONFIG_64BIT
),.quad
,.long
); \
51 ASM_ALIGN
=$(if
$(CONFIG_64BIT
),3,2); \
52 PROGBITS
=$(if
$(CONFIG_ARM
),%,@
)progbits
; \
53 echo
"/* Generated by firmware/Makefile */" > $@
;\
54 echo
" .section .rodata" >>$@
;\
55 echo
" .p2align $${ASM_ALIGN}" >>$@
;\
56 echo
"_fw_$${FWSTR}_bin:" >>$@
;\
57 echo
" .incbin \"$(2)\"" >>$@
;\
58 echo
"_fw_end:" >>$@
;\
59 echo
" .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@
;\
60 echo
" .p2align $${ASM_ALIGN}" >>$@
;\
61 echo
"_fw_$${FWSTR}_name:" >>$@
;\
62 echo
" .string \"$$FWNAME\"" >>$@
;\
63 echo
" .section .builtin_fw,\"a\",$${PROGBITS}" >>$@
;\
64 echo
" .p2align $${ASM_ALIGN}" >>$@
;\
65 echo
" $${ASM_WORD} _fw_$${FWSTR}_name" >>$@
;\
66 echo
" $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@
;\
67 echo
" $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@
;
69 # One of these files will change, or come into existence, whenever
70 # the configuration changes between 32-bit and 64-bit. The .S files
71 # need to change when that happens.
72 wordsize_deps
:= $(wildcard include/config
/64bit.h
include/config
/32bit.h \
73 include/config
/ppc32.h
include/config
/ppc64.h \
74 include/config
/superh32.h
include/config
/superh64.h \
75 include/config
/x86_32.h
include/config
/x86_64.h
)
77 # Workaround for make < 3.81, where .SECONDEXPANSION doesn't work.
78 # It'll end up depending on these targets, so make them a PHONY rule which
79 # depends on _all_ the directories in $(firmware-dirs), and it'll work out OK.
80 PHONY
+= $(objtree
)/$$(%) $(objtree
)/$(obj
)/$$(%)
81 $(objtree
)/$$(%) $(objtree
)/$(obj
)/$$(%): $(firmware-dirs
)
84 # For the $$(dir %) trick, where we need % to be expanded first.
87 $(patsubst %,$(obj
)/%.gen.S
, $(fw-shipped-y
)): %: $(wordsize_deps
) \
88 |
$(objtree
)/$$(dir %)
89 $(call cmd
,fwbin
,$(patsubst %.gen.S
,%,$@
))
90 $(patsubst %,$(obj
)/%.gen.S
, $(fw-external-y
)): %: $(wordsize_deps
) \
91 include/config
/builtin
/firmware
/dir.h |
$(objtree
)/$$(dir %)
92 $(call cmd
,fwbin
,$(fwabs
)/$(patsubst $(obj
)/%.gen.S
,%,$@
))
94 # The .o files depend on the binaries directly; the .S files don't.
95 $(patsubst %,$(obj
)/%.gen.o
, $(fw-shipped-y
)): %.gen.o
: %
96 $(patsubst %,$(obj
)/%.gen.o
, $(fw-external-y
)): $(obj
)/%.gen.o
: $(fwdir
)/%
98 # .ihex is used just as a simple way to hold binary files in a source tree
99 # where binaries are frowned upon. They are directly converted with objcopy.
100 $(obj
)/%: $(obj
)/%.ihex |
$(objtree
)/$(obj
)/$$(dir %)
103 # .HEX is also Intel HEX, but where the offset and length in each record
104 # is actually meaningful, because the firmware has to be loaded in a certain
105 # order rather than as a single binary blob. Thus, we convert them into our
106 # more compact binary representation of ihex records (<linux/ihex.h>)
107 $(obj
)/%.fw
: $(obj
)/%.HEX
$(obj
)/ihex2fw |
$(objtree
)/$(obj
)/$$(dir %)
110 # .H16 is our own modified form of Intel HEX, with 16-bit length for records.
111 $(obj
)/%.fw
: $(obj
)/%.H16
$(obj
)/ihex2fw |
$(objtree
)/$(obj
)/$$(dir %)
117 obj-y
+= $(patsubst %,%.gen.o
, $(fw-external-y
))
118 obj-
$(CONFIG_FIRMWARE_IN_KERNEL
) += $(patsubst %,%.gen.o
, $(fw-shipped-y
))
120 # Remove .S files and binaries created from ihex
121 # (during 'make clean' .config isn't included so they're all in $(fw-shipped-))
122 targets
:= $(fw-shipped-
) $(patsubst $(obj
)/%,%, \
123 $(shell find
$(obj
) -name \
*.gen.S
2>/dev
/null
))
125 # Without this, built-in.o won't be created when it's empty, and the
126 # final vmlinux link will fail.
129 hostprogs-y
:= ihex2fw