openwrt/package/linux/linux.mk

   1 #############################################################
   2 #
   3 # Linux kernel target for the OpenWRT project
   4 #
   5 # patches are sorted by numbers
   6 # 000   patch between linux-2.4.29 and linux-mips-cvs
   7 # 0xx   linksys patches
   8 # 1xx   OpenWRT patches (diag,compressed,..)
   9 # 2xx   fixes for 2.4.29 integration (wl driver)
  10 # 3xx   kernel feature patches (squashfs,jffs2 compression,..)
  11 # 4xx   patches needed to integrate feature patches
  12 #
  13 #############################################################
  14
  15 LINUX_FORMAT=zImage
  16 LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  17         -e 's/mipsel/mips/' \
  18         -e 's/powerpc/ppc/' \
  19         -e 's/sh[234]/sh/' \
  20         )
  21
  22 LINUX_SITE=http://www.kernel.org/pub/linux/kernel/v2.4
  23 LINUX_BINARY_DRIVER_SITE=http://openwrt.openbsd-geek.de
  24 LINUX_SOURCE=linux-$(LINUX_VERSION).tar.bz2
  25 LINUX_KCONFIG=./linux.config
  26 LINUX_PATCHES=./kernel-patches
  27 LINUX_KERNEL_SOURCE=./kernel-source
  28 LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/vmlinuz
  29 # Used by pcmcia-cs and others
  30 LINUX_SOURCE_DIR=$(LINUX_DIR)-$(LINUX_VERSION)
  31
  32 # binary driver extracted from linksys firmware GPL sourcetree WRT54GS_3_37_2_1109_US
  33 LINUX_BINARY_WL_DRIVER=kernel-binary-wl.tar.gz
  34 LINUX_BINARY_ET_DRIVER=kernel-binary-et.tar.gz
  35
  36 TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
  37
  38 $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER):
  39         $(WGET) -P $(DL_DIR) $(LINUX_BINARY_DRIVER_SITE)/$(LINUX_BINARY_WL_DRIVER)
  40
  41 $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER):
  42         $(WGET) -P $(DL_DIR) $(LINUX_BINARY_DRIVER_SITE)/$(LINUX_BINARY_ET_DRIVER)
  43
  44 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER)
  45         -mkdir -p $(BUILD_DIR)
  46         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  47         ln -sf $(LINUX_DIR)-$(LINUX_VERSION) $(LINUX_DIR)
  48         # extract wlan and lan binary only driver
  49         zcat $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  50         zcat $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  51         touch $(LINUX_DIR)/.unpacked
  52
  53 $(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
  54         $(PATCH) $(LINUX_DIR) $(LINUX_PATCHES)
  55         # copy kernel source which is maintained in openwrt via cvs
  56         cp -a $(LINUX_KERNEL_SOURCE)/* $(LINUX_DIR)
  57         # copy binary drivers
  58         cp -a $(BUILD_DIR)/wl/*.o $(LINUX_DIR)/drivers/net/wl
  59         cp -a $(BUILD_DIR)/et/*.o $(LINUX_DIR)/drivers/net/et
  60         touch $(LINUX_DIR)/.patched
  61
  62 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  63         -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  64         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  65           $(LINUX_DIR)/Makefile  \
  66           $(LINUX_DIR)/arch/mips/Makefile
  67         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  68         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/version.h
  69         touch $(LINUX_DIR)/.configured
  70
  71 $(LINUX_DIR)/.depend_done:  $(LINUX_DIR)/.configured
  72         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) dep
  73         touch $(LINUX_DIR)/.depend_done
  74
  75 $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  76         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) $(LINUX_FORMAT)
  77         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) modules
  78
  79 $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  80         cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
  81         touch -c $(LINUX_KERNEL)
  82
  83 $(LINUX_DIR)/.modules_done: $(LINUX_KERNEL)
  84         rm -rf $(BUILD_DIR)/modules
  85         $(MAKE) -C $(LINUX_DIR) DEPMOD=true INSTALL_MOD_PATH=$(BUILD_DIR)/modules modules_install
  86         touch $(LINUX_DIR)/.modules_done
  87
  88 $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
  89         mkdir -p $(STAGING_DIR)/include
  90         tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
  91         tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
  92
  93 $(TARGET_MODULES_DIR):
  94         -mkdir -p $(TARGET_MODULES_DIR)
  95         cp $(LINUX_DIR)/drivers/net/wl/wl.o $(TARGET_MODULES_DIR)
  96         cp $(LINUX_DIR)/drivers/net/et/et.o $(TARGET_MODULES_DIR)
  97         cp $(LINUX_DIR)/drivers/net/diag/diag.o $(TARGET_MODULES_DIR)
  98
  99 linux: $(LINUX_DIR)/.modules_done $(TARGET_MODULES_DIR)
 100
 101 linux-source: $(DL_DIR)/$(LINUX_SOURCE)
 102
 103 # This has been renamed so we do _NOT_ by default run this on 'make clean'
 104 linuxclean: clean
 105         rm -f $(LINUX_KERNEL)
 106         -$(MAKE) -C $(LINUX_DIR) clean
 107
 108 linux-dirclean:
 109         rm -f $(BUILD_DIR)/openwrt-kmodules.tar.bz2
 110         rm -rf $(LINUX_DIR)-$(LINUX_VERSION)
 111         rm -rf $(LINUX_DIR)
 112         rm -rf $(BUILD_DIR)/modules
 113