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 $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  17         -e 's/mipsel/mips/' \
  18         -e 's/powerpc/ppc/' \
  19         -e 's/sh[234]/sh/' \
  20         )
  21
  22 LINUX_BINARY_DRIVER_SITE=http://openwrt.openbsd-geek.de
  23 LINUX_SOURCE=linux-$(LINUX_VERSION).tar.bz2
  24 LINUX_KCONFIG=./linux.config
  25 LINUX_PATCHES=./kernel-patches
  26 LINUX_KERNEL_SOURCE=./kernel-source
  27 LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/vmlinuz
  28 # Used by pcmcia-cs and others
  29 LINUX_SOURCE_DIR=$(LINUX_DIR)-$(LINUX_VERSION)
  30
  31 # binary driver extracted from linksys firmware GPL sourcetree WRT54GS_3_37_2_1109_US
  32 LINUX_BINARY_WL_DRIVER=kernel-binary-wl-0.1.tar.gz
  33 LINUX_BINARY_ET_DRIVER=kernel-binary-et-0.2.tar.gz
  34
  35 TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
  36
  37 $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER):
  38         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_BINARY_WL_DRIVER) x $(LINUX_BINARY_DRIVER_SITE)
  39
  40 $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER):
  41         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_BINARY_ET_DRIVER) x $(LINUX_BINARY_DRIVER_SITE)
  42
  43 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE) $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER)
  44         -mkdir -p $(BUILD_DIR)
  45         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  46         ln -sf $(LINUX_DIR)-$(LINUX_VERSION) $(LINUX_DIR)
  47         # extract wlan and lan binary only driver
  48         zcat $(DL_DIR)/$(LINUX_BINARY_WL_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  49         zcat $(DL_DIR)/$(LINUX_BINARY_ET_DRIVER) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  50         touch $(LINUX_DIR)/.unpacked
  51
  52 $(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
  53         $(PATCH) $(LINUX_DIR) $(LINUX_PATCHES)
  54         # copy kernel source which is maintained in openwrt via cvs
  55         cp -a $(LINUX_KERNEL_SOURCE)/* $(LINUX_DIR)
  56         # copy binary drivers
  57         cp -a $(BUILD_DIR)/wl/*.o $(LINUX_DIR)/drivers/net/wl
  58         cp -a $(BUILD_DIR)/et/*.o $(LINUX_DIR)/drivers/net/et
  59         touch $(LINUX_DIR)/.patched
  60
  61 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  62         -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  63         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  64           $(LINUX_DIR)/Makefile  \
  65           $(LINUX_DIR)/arch/mips/Makefile
  66         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  67         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/version.h
  68         touch $(LINUX_DIR)/.configured
  69
  70 $(LINUX_DIR)/.depend_done:  $(LINUX_DIR)/.configured
  71         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) dep
  72         touch $(LINUX_DIR)/.depend_done
  73
  74 $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  75         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) $(LINUX_FORMAT)
  76         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) modules
  77
  78 $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  79         cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
  80         touch -c $(LINUX_KERNEL)
  81
  82 $(LINUX_DIR)/.modules_done: $(LINUX_KERNEL)
  83         rm -rf $(BUILD_DIR)/modules
  84         $(MAKE) -C $(LINUX_DIR) DEPMOD=true INSTALL_MOD_PATH=$(BUILD_DIR)/modules modules_install
  85         touch $(LINUX_DIR)/.modules_done
  86
  87 $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
  88         mkdir -p $(STAGING_DIR)/include
  89         tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
  90         tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
  91
  92 $(TARGET_MODULES_DIR):
  93         -mkdir -p $(TARGET_MODULES_DIR)
  94         cp $(LINUX_DIR)/drivers/net/wl/wl.o $(TARGET_MODULES_DIR)
  95         cp $(LINUX_DIR)/drivers/net/et/et.o $(TARGET_MODULES_DIR)
  96         cp $(LINUX_DIR)/drivers/net/diag/diag.o $(TARGET_MODULES_DIR)
  97
  98 linux: $(LINUX_DIR)/.modules_done $(TARGET_MODULES_DIR)
  99
 100 linux-source: $(DL_DIR)/$(LINUX_SOURCE)
 101
 102 # This has been renamed so we do _NOT_ by default run this on 'make clean'
 103 linuxclean: clean
 104         rm -f $(LINUX_KERNEL)
 105         -$(MAKE) -C $(LINUX_DIR) clean
 106
 107 linux-dirclean:
 108         rm -f $(BUILD_DIR)/openwrt-kmodules.tar.bz2
 109         rm -rf $(LINUX_DIR)-$(LINUX_VERSION)
 110         rm -rf $(LINUX_DIR)
 111         rm -rf $(BUILD_DIR)/modules
 112