package/linux/linux.mk

   1 #############################################################
   2 # $Id$
   3 #
   4 # Linux kernel target for the OpenWRT project
   5 #
   6 # patches are sorted by numbers
   7 # 000   patch between linux-2.4.xx and linux-mips-cvs
   8 # 0xx   linksys patches
   9 # 1xx   OpenWRT patches (diag,compressed,..)
  10 # 2xx   fixes for wl driver integration
  11 # 3xx   kernel feature patches (squashfs,jffs2 compression,..)
  12 # 4xx   patches needed to integrate feature patches
  13 #
  14 #############################################################
  15
  16 LINUX_FORMAT=zImage
  17 LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  18         -e 's/mipsel/mips/' \
  19         -e 's/powerpc/ppc/' \
  20         -e 's/sh[234]/sh/' \
  21         )
  22
  23 LINUX_BINARY_DRIVER_SITE=http://openwrt.openbsd-geek.de
  24 LINUX_SOURCE=linux-$(LINUX_VERSION).tar.bz2
  25 LINUX_KCONFIG=./linux.config
  26 LINUX_PATCHES=./kernel-patches
  27 LINUX_KERNEL_SOURCE=./kernel-source
  28 LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/piggy
  29 # Used by pcmcia-cs and others
  30 LINUX_SOURCE_DIR=$(LINUX_DIR)-$(LINUX_VERSION)
  31
  32 # proprietary driver extracted from linksys firmware GPL sourcetree WRT54GS_3_37_2_1109_US
  33 LINUX_BINARY_WL_DRIVER=kernel-binary-wl-0.2.tar.gz
  34 LINUX_BINARY_WL_MD5SUM=ab2a6d39ccb550e494bbeccf1b0e228f
  35 LINUX_ET_DRIVER=kernel-source-et-0.6.tar.gz
  36 LINUX_ET_MD5SUM=b7883403d3c1ce7b73c362db621c6f00
  37
  38 TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
  39
  40 $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER):
  41         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_BINARY_WL_DRIVER) $(LINUX_BINARY_WL_MD5SUM) $(LINUX_BINARY_DRIVER_SITE)
  42
  43 $(DL_DIR)/$(LINUX_ET_DRIVER):
  44         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_ET_DRIVER) $(LINUX_ET_MD5SUM) $(LINUX_BINARY_DRIVER_SITE)
  45
  46 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) $(DL_DIR)/$(LINUX_ET_DRIVER)
  47         -mkdir -p $(BUILD_DIR)
  48         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  49         ln -sf $(LINUX_DIR)-$(LINUX_VERSION) $(LINUX_DIR)
  50         zcat $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  51         zcat $(DL_DIR)/$(LINUX_ET_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  52         touch $(LINUX_DIR)/.unpacked
  53
  54 $(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
  55         # copy kernel source which is maintained in openwrt via cvs
  56         cp -a $(LINUX_KERNEL_SOURCE)/* $(LINUX_DIR)
  57         # copy binary wlan driver
  58         cp -a $(BUILD_DIR)/wl/*.o $(LINUX_DIR)/drivers/net/wl
  59         # copy proprietary et source
  60         cp -a $(BUILD_DIR)/et/* $(LINUX_DIR)/drivers/net/et
  61         cp -a $(BUILD_DIR)/et/*.h $(LINUX_DIR)/include/
  62         $(PATCH) $(LINUX_DIR) $(LINUX_PATCHES)
  63         $(SED) 's/@expr length/@-expr length/' $(LINUX_DIR)/Makefile
  64         touch $(LINUX_DIR)/.patched
  65
  66 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  67         -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  68         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  69           $(LINUX_DIR)/Makefile  \
  70           $(LINUX_DIR)/arch/mips/Makefile
  71         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  72         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/version.h
  73         touch $(LINUX_DIR)/.configured
  74
  75 $(LINUX_DIR)/.depend_done:  $(LINUX_DIR)/.configured
  76         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) dep
  77         touch $(LINUX_DIR)/.depend_done
  78
  79 $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  80         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) CFLAGS_KERNEL="-fno-delayed-branch " $(LINUX_FORMAT)
  81
  82 $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  83         cp -fa $< $@
  84         touch -c $(LINUX_KERNEL)
  85
  86 $(LINUX_IMAGE): $(LINUX_KERNEL)
  87         cat $^ | $(BUILD_DIR)/lzma/lzma e -si -so -eos > $@ || (rm -f $@ && false)
  88
  89 $(LINUX_DIR)/.modules_done: $(LINUX_KERNEL) $(LINUX_IMAGE)
  90         rm -rf $(BUILD_DIR)/modules
  91         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) CFLAGS_KERNEL="-fno-delayed-branch " modules
  92         $(MAKE) -C $(LINUX_DIR) DEPMOD=true INSTALL_MOD_PATH=$(BUILD_DIR)/modules modules_install
  93         touch $(LINUX_DIR)/.modules_done
  94
  95 $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
  96         mkdir -p $(STAGING_DIR)/include
  97         tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
  98         tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
  99
 100 $(TARGET_MODULES_DIR):
 101         -mkdir -p $(TARGET_MODULES_DIR)
 102
 103 linux: $(LINUX_DIR)/.modules_done $(TARGET_MODULES_DIR)
 104
 105 linux-source: $(DL_DIR)/$(LINUX_SOURCE)
 106
 107 # This has been renamed so we do _NOT_ by default run this on 'make clean'
 108 linuxclean: clean
 109         rm -f $(LINUX_KERNEL) $(LINUX_IMAGE)
 110         -$(MAKE) -C $(LINUX_DIR) clean
 111
 112 linux-dirclean:
 113         rm -f $(BUILD_DIR)/openwrt-kmodules.tar.bz2
 114         rm -rf $(LINUX_DIR)-$(LINUX_VERSION)
 115         rm -rf $(LINUX_DIR)
 116         rm -rf $(BUILD_DIR)/modules
 117         rm -rf $(BUILD_DIR)/wl
 118         rm -rf $(BUILD_DIR)/et
 119