diff options
Diffstat (limited to 'linux/firmware/Makefile')
-rw-r--r-- | linux/firmware/Makefile | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/linux/firmware/Makefile b/linux/firmware/Makefile index e69461f93..e2841d35d 100644 --- a/linux/firmware/Makefile +++ b/linux/firmware/Makefile @@ -9,8 +9,26 @@ fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) -firmware-y := $(fw-external-y) $(fw-shipped-y) -firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) +# There are three cases to care about: +# 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should +# include the firmware files to include, according to .config +# 2. 'make modules_install', which will install firmware for modules, and +# _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n +# 3. 'make firmware_install', which installs all firmware, unconditionally. + +# For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be +# accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all). +# But be aware that the config file might not be included at all. + +fw-shipped-$(CONFIG_DVB_TTUSB_BUDGET) += ttusb-budget/dspbootcode.bin +fw-shipped-$(CONFIG_USB_DABUSB) += dabusb/firmware.fw dabusb/bitstream.bin +fw-shipped-$(CONFIG_USB_VICAM) += vicam/firmware.fw +fw-shipped-$(CONFIG_VIDEO_CPIA2) += cpia2/stv0672_vp4.bin + +fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-) + +# Directories which we _might_ need to create, so we have a rule for them. +firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all)))) quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) cmd_mkdir = mkdir -p $@ @@ -18,6 +36,12 @@ quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) quiet_cmd_ihex = IHEX $@ cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ +quiet_cmd_ihex2fw = IHEX2FW $@ + cmd_ihex2fw = $(objtree)/$(obj)/ihex2fw $< $@ + +quiet_cmd_h16tofw = H16TOFW $@ + cmd_h16tofw = $(objtree)/$(obj)/ihex2fw -w $< $@ + quiet_cmd_fwbin = MK_FW $@ cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ @@ -63,20 +87,34 @@ $(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ | $(objtree)/$$(dir %) $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) $(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ - include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) + include/config/extra/firmware/dir.h | $(objtree)/$$(dir %) $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) # The .o files depend on the binaries directly; the .S files don't. $(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% +# .ihex is used just as a simple way to hold binary files in a source tree +# where binaries are frowned upon. They are directly converted with objcopy. $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) $(call cmd,ihex) +# .HEX is also Intel HEX, but where the offset and length in each record +# is actually meaningful, because the firmware has to be loaded in a certain +# order rather than as a single binary blob. Thus, we convert them into our +# more compact binary representation of ihex records (<linux/ihex.h>) +$(obj)/%.fw: $(obj)/%.HEX $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %) + $(call cmd,ihex2fw) + +# .H16 is our own modified form of Intel HEX, with 16-bit length for records. +$(obj)/%.fw: $(obj)/%.H16 $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %) + $(call cmd,h16tofw) + $(firmware-dirs): $(call cmd,mkdir) -obj-y := $(patsubst %,%.gen.o, $(firmware-y)) +obj-y += $(patsubst %,%.gen.o, $(fw-external-y)) +obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y)) # Remove .S files and binaries created from ihex # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) @@ -86,3 +124,5 @@ targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ # Without this, built-in.o won't be created when it's empty, and the # final vmlinux link will fail. obj-n := dummy + +hostprogs-y := ihex2fw |