linux/firmware/Makefile
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   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).
   7fwdir := $(subst ",,$(CONFIG_EXTRA_FIRMWARE_DIR))
   8fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
   9
  10fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE))
  11
  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.
  18
  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 $(fw-shipped-all).
  21# But be aware that the config file might not be included at all.
  22
  23fw-shipped-$(CONFIG_ATARI_DSP56K) += dsp56k/bootstrap.bin
  24fw-shipped-$(CONFIG_ATM_AMBASSADOR) += atmsar11.fw
  25fw-shipped-$(CONFIG_CASSINI) += sun/cassini.bin
  26fw-shipped-$(CONFIG_COMPUTONE) += intelliport2.bin
  27fw-shipped-$(CONFIG_DVB_TTUSB_BUDGET) += ttusb-budget/dspbootcode.bin
  28fw-shipped-$(CONFIG_SMCTR) += tr_smctr.bin
  29fw-shipped-$(CONFIG_SND_KORG1212) += korg/k1212.dsp
  30fw-shipped-$(CONFIG_SND_MAESTRO3) += ess/maestro3_assp_kernel.fw \
  31                                     ess/maestro3_assp_minisrc.fw
  32fw-shipped-$(CONFIG_SND_SB16_CSP) += sb16/mulaw_main.csp sb16/alaw_main.csp \
  33                                     sb16/ima_adpcm_init.csp \
  34                                     sb16/ima_adpcm_playback.csp \
  35                                     sb16/ima_adpcm_capture.csp
  36fw-shipped-$(CONFIG_SND_YMFPCI) += yamaha/ds1_ctrl.fw yamaha/ds1_dsp.fw \
  37                                   yamaha/ds1e_ctrl.fw
  38fw-shipped-$(CONFIG_USB_DABUSB) += dabusb/firmware.fw dabusb/bitstream.bin
  39fw-shipped-$(CONFIG_USB_EMI26) += emi26/loader.fw emi26/firmware.fw \
  40                                  emi26/bitstream.fw
  41fw-shipped-$(CONFIG_USB_EMI62) += emi62/loader.fw emi62/bitstream.fw \
  42                                  emi62/spdif.fw emi62/midi.fw
  43fw-shipped-$(CONFIG_USB_KAWETH) += kaweth/new_code.bin kaweth/trigger_code.bin \
  44                                   kaweth/new_code_fix.bin \
  45                                   kaweth/trigger_code_fix.bin
  46ifdef CONFIG_FIRMWARE_IN_KERNEL
  47fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_MPR) += keyspan/mpr.fw
  48fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA18X) += keyspan/usa18x.fw
  49fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA19) += keyspan/usa19.fw
  50fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA19QI) += keyspan/usa19qi.fw
  51fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA19QW) += keyspan/usa19qw.fw
  52fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA19W) += keyspan/usa19w.fw
  53fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA28) += keyspan/usa28.fw
  54fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA28XA) += keyspan/usa28xa.fw
  55fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA28XB) += keyspan/usa28xb.fw
  56fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA28X) += keyspan/usa28x.fw
  57fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA49W) += keyspan/usa49w.fw
  58fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_USA49WLC) += keyspan/usa49wlc.fw
  59else
  60fw-shipped- += keyspan/mpr.fw keyspan/usa18x.fw keyspan/usa19.fw        \
  61        keyspan/usa19qi.fw keyspan/usa19qw.fw keyspan/usa19w.fw         \
  62        keyspan/usa28.fw keyspan/usa28xa.fw keyspan/usa28xb.fw          \
  63        keyspan/usa28x.fw keyspan/usa49w.fw keyspan/usa49wlc.fw
  64endif
  65fw-shipped-$(CONFIG_USB_SERIAL_TI) += ti_3410.fw ti_5052.fw
  66fw-shipped-$(CONFIG_USB_SERIAL_EDGEPORT) += edgeport/boot.fw edgeport/boot2.fw \
  67                                            edgeport/down.fw edgeport/down2.fw
  68fw-shipped-$(CONFIG_USB_SERIAL_EDGEPORT_TI) += edgeport/down3.bin
  69fw-shipped-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat_loader.fw whiteheat.fw \
  70                                           # whiteheat_loader_debug.fw
  71fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += keyspan_pda/keyspan_pda.fw
  72fw-shipped-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda/xircom_pgs.fw
  73fw-shipped-$(CONFIG_USB_VICAM) += vicam/firmware.fw
  74fw-shipped-$(CONFIG_VIDEO_CPIA2) += cpia2/stv0672_vp4.bin
  75
  76fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-)
  77
  78# Directories which we _might_ need to create, so we have a rule for them.
  79firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all))))
  80
  81quiet_cmd_mkdir = MKDIR   $(patsubst $(objtree)/%,%,$@)
  82      cmd_mkdir = mkdir -p $@
  83
  84quiet_cmd_ihex  = IHEX    $@
  85      cmd_ihex  = $(OBJCOPY) -Iihex -Obinary $< $@
  86
  87quiet_cmd_ihex2fw  = IHEX2FW $@
  88      cmd_ihex2fw  = $(objtree)/$(obj)/ihex2fw $< $@
  89
  90quiet_cmd_h16tofw  = H16TOFW $@
  91      cmd_h16tofw  = $(objtree)/$(obj)/ihex2fw -w $< $@
  92
  93quiet_cmd_fwbin = MK_FW   $@
  94      cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)";                \
  95                  FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst      \
  96                                firmware/%.gen.S,%,$@))))";                  \
  97                  ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long);                \
  98                  ASM_ALIGN=$(if $(CONFIG_64BIT),3,2);                       \
  99                  PROGBITS=$(if $(CONFIG_ARM),%,@)progbits;                  \
 100                  echo "/* Generated by firmware/Makefile */"           > $@;\
 101                  echo "    .section .rodata"                           >>$@;\
 102                  echo "    .p2align $${ASM_ALIGN}"                     >>$@;\
 103                  echo "_fw_$${FWSTR}_bin:"                             >>$@;\
 104                  echo "    .incbin \"$(2)\""                           >>$@;\
 105                  echo "_fw_end:"                                       >>$@;\
 106                  echo "   .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\
 107                  echo "    .p2align $${ASM_ALIGN}"                     >>$@;\
 108                  echo "_fw_$${FWSTR}_name:"                            >>$@;\
 109                  echo "    .string \"$$FWNAME\""                       >>$@;\
 110                  echo "    .section .builtin_fw,\"a\",$${PROGBITS}"    >>$@;\
 111                  echo "    .p2align $${ASM_ALIGN}"                     >>$@;\
 112                  echo "    $${ASM_WORD} _fw_$${FWSTR}_name"            >>$@;\
 113                  echo "    $${ASM_WORD} _fw_$${FWSTR}_bin"             >>$@;\
 114                  echo "    $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin"   >>$@;
 115
 116# One of these files will change, or come into existence, whenever
 117# the configuration changes between 32-bit and 64-bit. The .S files
 118# need to change when that happens.
 119wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \
 120                include/config/ppc32.h include/config/ppc64.h \
 121                include/config/superh32.h include/config/superh64.h \
 122                include/config/x86_32.h include/config/x86_64.h)
 123
 124# Workaround for make < 3.81, where .SECONDEXPANSION doesn't work.
 125# It'll end up depending on these targets, so make them a PHONY rule which
 126# depends on _all_ the directories in $(firmware-dirs), and it'll work out OK.
 127PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%)
 128$(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs)
 129        @true
 130
 131# For the $$(dir %) trick, where we need % to be expanded first.
 132.SECONDEXPANSION:
 133
 134$(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \
 135                | $(objtree)/$$(dir %)
 136        $(call cmd,fwbin,$(patsubst %.gen.S,%,$@))
 137$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \
 138                include/config/extra/firmware/dir.h | $(objtree)/$$(dir %)
 139        $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))
 140
 141# The .o files depend on the binaries directly; the .S files don't.
 142$(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: %
 143$(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/%
 144
 145# .ihex is used just as a simple way to hold binary files in a source tree
 146# where binaries are frowned upon. They are directly converted with objcopy.
 147$(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %)
 148        $(call cmd,ihex)
 149
 150# Don't depend on ihex2fw if we're installing and it already exists.
 151# Putting it after | in the dependencies doesn't seem sufficient when
 152# we're installing after a cross-compile, because ihex2fw has dependencies
 153# on stuff like /usr/lib/gcc/ppc64-redhat-linux/4.3.0/include/stddef.h and 
 154# thus wants to be rebuilt. Which it can't be, if the prebuilt kernel tree
 155# is exported read-only for someone to run 'make install'.
 156ifeq ($(INSTALL):$(wildcard $(obj)/ihex2fw),install:$(obj)/ihex2fw)
 157ihex2fw_dep :=
 158else
 159ihex2fw_dep := $(obj)/ihex2fw
 160endif
 161
 162# .HEX is also Intel HEX, but where the offset and length in each record
 163# is actually meaningful, because the firmware has to be loaded in a certain
 164# order rather than as a single binary blob. Thus, we convert them into our
 165# more compact binary representation of ihex records (<linux/ihex.h>)
 166$(obj)/%.fw: $(obj)/%.HEX $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
 167        $(call cmd,ihex2fw)
 168
 169# .H16 is our own modified form of Intel HEX, with 16-bit length for records.
 170$(obj)/%.fw: $(obj)/%.H16 $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
 171        $(call cmd,h16tofw)
 172
 173$(firmware-dirs):
 174        $(call cmd,mkdir)
 175
 176obj-y                            += $(patsubst %,%.gen.o, $(fw-external-y))
 177obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y))
 178
 179# Remove .S files and binaries created from ihex
 180# (during 'make clean' .config isn't included so they're all in $(fw-shipped-))
 181targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \
 182                                $(shell find $(obj) -name \*.gen.S 2>/dev/null))
 183
 184# Without this, built-in.o won't be created when it's empty, and the
 185# final vmlinux link will fail.
 186obj-n := dummy
 187
 188hostprogs-y := ihex2fw
 189