From 4d2acfbfdf68257e846aaa355edd10fc35ba0feb Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 23 May 2008 13:58:12 +0100 Subject: firmware: Add CONFIG_EXTRA_FIRMWARE option This allows arbitrary firmware files to be included in the static kernel where the firmware loader can find them without requiring userspace to be alive. (Updated and CONFIG_EXTRA_FIRMWARE_DIR added with lots of help from Johannes Berg). Signed-off-by: David Woodhouse Signed-off-by: Johannes Berg --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 6315424a00b9..f398cffa6c07 100644 --- a/Makefile +++ b/Makefile @@ -450,7 +450,7 @@ scripts: scripts_basic include/config/auto.conf # Objects we will link into vmlinux / subdirs we need to visit init-y := init/ -drivers-y := drivers/ sound/ +drivers-y := drivers/ sound/ firmware/ net-y := net/ libs-y := lib/ core-y := usr/ -- cgit v1.2.3 From 88ecf814c47f577248751ddbe9626d98aeef5783 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 29 May 2008 11:01:51 +0300 Subject: firmware: Add firmware installation to modules_install, add firmware_install For 'make modules_install', install any firmware required by the modules which are being installed. Also add a 'make firmware_install' target which doesn't depend on the configuration, but installs _all_ available in-kernel-tree firmware into $(INSTALL_FW_PATH), which defaults to /lib/firmware. This is intended for distributors to make arch-independent (and config-independent) packages containing firmware. Signed-off-by: David Woodhouse --- Makefile | 13 +++++++++++++ firmware/Makefile | 24 +++++++++++++++++------- scripts/Makefile.fwinst | 45 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 75 insertions(+), 7 deletions(-) create mode 100644 scripts/Makefile.fwinst (limited to 'Makefile') diff --git a/Makefile b/Makefile index f398cffa6c07..bd2aa14f1e77 100644 --- a/Makefile +++ b/Makefile @@ -994,6 +994,16 @@ PHONY += depend dep depend dep: @echo '*** Warning: make $@ is unnecessary now.' +# --------------------------------------------------------------------------- +# Firmware install +INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware +export INSTALL_FW_PATH + +PHONY += firmware_install +firmware_install: FORCE + @mkdir -p $(objtree)/firmware + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install + # --------------------------------------------------------------------------- # Kernel headers INSTALL_HDR_PATH=$(objtree)/usr @@ -1080,6 +1090,7 @@ _modinst_: # boot script depmod is the master version. PHONY += _modinst_post _modinst_post: _modinst_ + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst $(call cmd,depmod) else # CONFIG_MODULES @@ -1197,6 +1208,8 @@ help: @echo '* vmlinux - Build the bare kernel' @echo '* modules - Build all modules' @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' + @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' + @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' @echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[ois] - Build specified target only' @echo ' dir/file.ko - Build module including final link' diff --git a/firmware/Makefile b/firmware/Makefile index cc25f5600d5d..3742feeb066f 100644 --- a/firmware/Makefile +++ b/firmware/Makefile @@ -9,13 +9,22 @@ fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) -# If CONFIG_FIRMWARE_IN_KERNEL is not set, then don't include any firmware -ifneq ($(CONFIG_FIRMWARE_IN_KERNEL),y) -fw-shipped-y := -endif +# There are three cases to care about: +# 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should +# include the firmware files to include, according to .config +# 2. 'make modules_install', which will install firmware for modules, and +# _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n +# 3. 'make firmware_install', which installs all firmware, unconditionally. -firmware-y := $(fw-external-y) $(fw-shipped-y) -firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) +# For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be +# accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all). +# But be aware that the config file might not be included at all. + + +fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-) + +# Directories which we _might_ need to create, so we have a rule for them. +firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all)))) quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) cmd_mkdir = mkdir -p $@ @@ -81,7 +90,8 @@ $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) $(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-)) diff --git a/scripts/Makefile.fwinst b/scripts/Makefile.fwinst new file mode 100644 index 000000000000..1c030087037f --- /dev/null +++ b/scripts/Makefile.fwinst @@ -0,0 +1,45 @@ +# ========================================================================== +# Installing firmware +# +# We don't include the .config, so all firmware files are in $(fw-shipped-) +# rather than in $(fw-shipped-y) or $(fw-shipped-n). +# ========================================================================== + +INSTALL := install + +# For modules_install installing firmware, we want to see .config +# But for firmware_install, we don't care, but don't want to require it. +-include $(objtree)/.config + +include scripts/Kbuild.include +include $(srctree)/$(obj)/Makefile + +include scripts/Makefile.host + +mod-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-m)) + +# If CONFIG_FIRMWARE_IN_KERNEL isn't set, then install the +# firmware for in-kernel drivers too. +ifndef CONFIG_FIRMWARE_IN_KERNEL +mod-fw += $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-y)) +endif + +installed-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-all)) +installed-fw-dirs := $(sort $(dir $(installed-fw))) $(INSTALL_FW_PATH)/. + +quiet_cmd_install = INSTALL $(subst $(srctree)/,,$@) + cmd_install = $(INSTALL) -m0644 $< $@ + +$(installed-fw-dirs): + $(call cmd,mkdir) + +$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% | $(INSTALL_FW_PATH)/$$(dir %)/ + $(call cmd,install) + +.PHONY: __fw_install __fw_modinst FORCE + +__fw_install: $(installed-fw) +__fw_modinst: $(mod-fw) + + +FORCE: -- cgit v1.2.3