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#############################################################
#
# Linux kernel target for the OpenWRT project
#
# patches are sorted by numbers
# 000 patch between linux-2.4.29 and linux-mips-cvs
# 0xx linksys patches
# 1xx OpenWRT patches (diag,compressed,..)
# 2xx fixes for 2.4.29 integration (wl driver)
# 3xx kernel feature patches (squashfs,jffs2 compression,..)
# 4xx patches needed to integrate feature patches
#
#############################################################
LINUX_FORMAT=zImage
LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
-e 's/mipsel/mips/' \
-e 's/powerpc/ppc/' \
-e 's/sh[234]/sh/' \
)
LINUX_SITE=http://www.kernel.org/pub/linux/kernel/v2.4
LINUX_BINARY_DRIVER_SITE=http://openwrt.openbsd-geek.de
LINUX_SOURCE=linux-$(LINUX_VERSION).tar.bz2
LINUX_KCONFIG=./linux.config
LINUX_PATCHES=./kernel-patches
LINUX_KERNEL_SOURCE=./kernel-source
LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/vmlinuz
# Used by pcmcia-cs and others
LINUX_SOURCE_DIR=$(LINUX_DIR)-$(LINUX_VERSION)
# binary driver extracted from linksys firmware GPL sourcetree WRT54GS_3_37_2_1109_US
LINUX_BINARY_WL_DRIVER=kernel-binary-wl.tar.gz
LINUX_BINARY_ET_DRIVER=kernel-binary-et.tar.gz
TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
$(DL_DIR)/$(LINUX_BINARY_WL_DRIVER):
$(WGET) -P $(DL_DIR) $(LINUX_BINARY_DRIVER_SITE)/$(LINUX_BINARY_WL_DRIVER)
$(DL_DIR)/$(LINUX_BINARY_ET_DRIVER):
$(WGET) -P $(DL_DIR) $(LINUX_BINARY_DRIVER_SITE)/$(LINUX_BINARY_ET_DRIVER)
$(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) $(DL_DIR)/$(LINUX_BINARY_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)
# extract wlan and lan binary only driver
zcat $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
zcat $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(LINUX_DIR)/.unpacked
$(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
$(PATCH) $(LINUX_DIR) $(LINUX_PATCHES)
# copy kernel source which is maintained in openwrt via cvs
cp -a $(LINUX_KERNEL_SOURCE)/* $(LINUX_DIR)
# copy binary drivers
cp -a $(BUILD_DIR)/wl/*.o $(LINUX_DIR)/drivers/net/wl
cp -a $(BUILD_DIR)/et/*.o $(LINUX_DIR)/drivers/net/et
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) $(LINUX_FORMAT)
$(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) modules
$(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
touch -c $(LINUX_KERNEL)
$(LINUX_DIR)/.modules_done: $(LINUX_KERNEL)
rm -rf $(BUILD_DIR)/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)
cp $(LINUX_DIR)/drivers/net/wl/wl.o $(TARGET_MODULES_DIR)
cp $(LINUX_DIR)/drivers/net/et/et.o $(TARGET_MODULES_DIR)
cp $(LINUX_DIR)/drivers/net/diag/diag.o $(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 $(LINUX_KERNEL)
-$(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
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