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#############################################################
# $Id$
#
# Linux kernel target for the OpenWRT project
#
# patches are sorted by numbers
# 000 patch between linux-2.4.xx and linux-mips-cvs
# 0xx linksys patches
# 1xx OpenWRT patches (diag,compressed,..)
# 2xx fixes for wl driver integration
# 3xx kernel feature patches (squashfs,jffs2 compression,..)
# 4xx patches needed to integrate feature patches
#
#############################################################
LINUX_FORMAT=zImage
LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
-e 's/mipsel/mips/' \
-e 's/powerpc/ppc/' \
-e 's/sh[234]/sh/' \
)
LINUX_BINARY_DRIVER_SITE=http://openwrt.openbsd-geek.de
LINUX_SOURCE=linux-$(LINUX_VERSION).tar.bz2
LINUX_KCONFIG=./linux.config
LINUX_PATCHES=./kernel-patches
LINUX_KERNEL_SOURCE=./kernel-source
LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/piggy
# Used by pcmcia-cs and others
LINUX_SOURCE_DIR=$(LINUX_DIR)-$(LINUX_VERSION)
# proprietary driver extracted from linksys firmware GPL sourcetree WRT54GS_3_37_2_1109_US
LINUX_BINARY_WL_DRIVER=kernel-binary-wl-0.2.tar.gz
LINUX_BINARY_WL_MD5SUM=ab2a6d39ccb550e494bbeccf1b0e228f
LINUX_ET_DRIVER=kernel-source-et-0.6.tar.gz
LINUX_ET_MD5SUM=b7883403d3c1ce7b73c362db621c6f00
TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
$(DL_DIR)/$(LINUX_BINARY_WL_DRIVER):
$(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_BINARY_WL_DRIVER) $(LINUX_BINARY_WL_MD5SUM) $(LINUX_BINARY_DRIVER_SITE)
$(DL_DIR)/$(LINUX_ET_DRIVER):
$(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_ET_DRIVER) $(LINUX_ET_MD5SUM) $(LINUX_BINARY_DRIVER_SITE)
$(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) $(DL_DIR)/$(LINUX_ET_DRIVER)
-mkdir -p $(BUILD_DIR)
bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
ln -sf $(LINUX_DIR)-$(LINUX_VERSION) $(LINUX_DIR)
zcat $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
zcat $(DL_DIR)/$(LINUX_ET_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(LINUX_DIR)/.unpacked
$(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
# copy kernel source which is maintained in openwrt via cvs
cp -a $(LINUX_KERNEL_SOURCE)/* $(LINUX_DIR)
# copy binary wlan driver
cp -a $(BUILD_DIR)/wl/*.o $(LINUX_DIR)/drivers/net/wl
# copy proprietary et source
cp -a $(BUILD_DIR)/et/* $(LINUX_DIR)/drivers/net/et
cp -a $(BUILD_DIR)/et/*.h $(LINUX_DIR)/include/
$(PATCH) $(LINUX_DIR) $(LINUX_PATCHES)
$(SED) 's/@expr length/@-expr length/' $(LINUX_DIR)/Makefile
touch $(LINUX_DIR)/.patched
$(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
-cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
$(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
$(LINUX_DIR)/Makefile \
$(LINUX_DIR)/arch/mips/Makefile
$(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
$(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/version.h
touch $(LINUX_DIR)/.configured
$(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
$(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) dep
touch $(LINUX_DIR)/.depend_done
$(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
$(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) CFLAGS_KERNEL="-fno-delayed-branch " $(LINUX_FORMAT)
$(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
cp -fa $< $@
touch -c $(LINUX_KERNEL)
$(LINUX_IMAGE): $(LINUX_KERNEL)
cat $^ | $(BUILD_DIR)/lzma/lzma e -si -so -eos > $@ || (rm -f $@ && false)
$(LINUX_DIR)/.modules_done: $(LINUX_KERNEL) $(LINUX_IMAGE)
rm -rf $(BUILD_DIR)/modules
$(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) CFLAGS_KERNEL="-fno-delayed-branch " modules
$(MAKE) -C $(LINUX_DIR) DEPMOD=true INSTALL_MOD_PATH=$(BUILD_DIR)/modules modules_install
touch $(LINUX_DIR)/.modules_done
$(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
mkdir -p $(STAGING_DIR)/include
tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
$(TARGET_MODULES_DIR):
-mkdir -p $(TARGET_MODULES_DIR)
linux: $(LINUX_DIR)/.modules_done $(TARGET_MODULES_DIR)
linux-source: $(DL_DIR)/$(LINUX_SOURCE)
# This has been renamed so we do _NOT_ by default run this on 'make clean'
linuxclean: clean
rm -f $(LINUX_KERNEL) $(LINUX_IMAGE)
-$(MAKE) -C $(LINUX_DIR) clean
linux-dirclean:
rm -f $(BUILD_DIR)/openwrt-kmodules.tar.bz2
rm -rf $(LINUX_DIR)-$(LINUX_VERSION)
rm -rf $(LINUX_DIR)
rm -rf $(BUILD_DIR)/modules
rm -rf $(BUILD_DIR)/wl
rm -rf $(BUILD_DIR)/et
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