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 <David.Woodhouse@intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index f398cffa6c07..bd2aa14f1e77 100644
--- a/Makefile
+++ b/Makefile
@@ -995,6 +995,16 @@ 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
 export INSTALL_HDR_PATH
@@ -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'