openwrt/package/linux/linux.mk

   1 #############################################################
   2 #
   3 # Linux kernel targets
   4 #
   5 # Note:  If you have any patches to apply, create the directory
   6 # sources/kernel-patches and put your patches in there and number
   7 # them in the order you wish to apply them...  i.e.
   8 #
   9 #   sources/kernel-patches/001-my-special-stuff.bz2
  10 #   sources/kernel-patches/003-gcc-Os.bz2
  11 #   sources/kernel-patches/004_no-warnings.bz2
  12 #   sources/kernel-patches/030-lowlatency-mini.bz2
  13 #   sources/kernel-patches/031-lowlatency-fixes-5.bz2
  14 #   sources/kernel-patches/099-shutup.bz2
  15 #   etc...
  16 #
  17 # these patches will all be applied by the patch-kernel.sh
  18 # script (which will also abort the build if it finds rejects)
  19 #  -Erik
  20 #
  21 #############################################################
  22 ifneq ($(filter $(TARGETS),linux),)
  23
  24 LINUX_FORMAT=zImage
  25 LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  26         -e 's/mipsel/mips/' \
  27         -e 's/powerpc/ppc/' \
  28         -e 's/sh[234]/sh/' \
  29         )
  30
  31 LINUX_VERSION=2.4.29
  32 LINUX_CVS_DATE="2005-01-30"
  33 LINUX_CVS_BRANCH=linux_2_4
  34 LINUX_DIR=$(BUILD_DIR)/linux
  35 LINUX_SITE=ftp.linux-mips.org
  36 LINUX_KCONFIG=package/linux/linux.config
  37 LINUX_KERNEL=$(BUILD_DIR)/buildroot-kernel
  38 LINUX_BINLOC=arch/$(LINUX_KARCH)/brcm-boards/bcm947xx/compressed/vmlinuz
  39 # Used by pcmcia-cs and others
  40 LINUX_SOURCE_DIR=$(LINUX_DIR)
  41
  42 # kernel stuff extracted from linksys firmware GPL sourcetree
  43 # WRT54GS_3_37_2_1109_US (shared,include,wl,et)
  44 LINKSYS_KERNEL_TGZ=linksys-kernel.tar.gz
  45
  46 TARGET_MODULES_DIR=$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)
  47
  48 $(DL_DIR)/linux.tar.bz2:
  49         -mkdir -p $(DL_DIR)
  50         (cd $(DL_DIR); cvs -d :pserver:cvs:cvs@$(LINUX_SITE):/home/cvs login)
  51         (cd $(DL_DIR); cvs -z3 -d :pserver:cvs:cvs@$(LINUX_SITE):/home/cvs co -D $(LINUX_CVS_DATE) -r$(LINUX_CVS_BRANCH) linux)
  52         (cd $(DL_DIR); tar jcvf linux.tar.bz2 linux && rm -rf linux)
  53
  54 $(DL_DIR)/$(LINKSYS_KERNEL_TGZ):
  55         $(WGET) -P $(DL_DIR) $(LINKSYS_TGZ_SITE)/$(LINKSYS_KERNEL_TGZ)
  56
  57 $(LINUX_DIR)/.unpacked: $(DL_DIR)/linux.tar.bz2 $(DL_DIR)/$(LINKSYS_KERNEL_TGZ)
  58         -mkdir -p $(BUILD_DIR)
  59         (cd $(BUILD_DIR); tar jxvf $(DL_DIR)/linux.tar.bz2)
  60         -mkdir -p $(TOOL_BUILD_DIR)
  61         -(cd $(TOOL_BUILD_DIR); ln -sf $(BUILD_DIR)/linux linux)
  62         toolchain/patch-kernel.sh $(LINUX_DIR) package/linux/kernel-patches
  63         -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  64         # extract linksys binary kernel stuff and include/shared files
  65         zcat $(DL_DIR)/$(LINKSYS_KERNEL_TGZ) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
  66         touch $(LINUX_DIR)/.unpacked
  67
  68 $(LINUX_KCONFIG):
  69         @if [ ! -f "$(LINUX_KCONFIG)" ] ; then \
  70                 echo ""; \
  71                 echo "You should create a .config for your kernel"; \
  72                 echo "and install it as $(LINUX_KCONFIG)"; \
  73                 echo ""; \
  74                 sleep 5; \
  75         fi;
  76
  77 $(LINUX_DIR)/.configured:  $(LINUX_DIR)/.unpacked  $(LINUX_KCONFIG)
  78         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" $(LINUX_DIR)/Makefile
  79         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" $(LINUX_DIR)/arch/mips/Makefile
  80         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  81         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/version.h
  82         touch $(LINUX_DIR)/.configured
  83
  84 $(LINUX_DIR)/.depend_done:  $(LINUX_DIR)/.configured
  85         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) dep
  86         touch $(LINUX_DIR)/.depend_done
  87
  88 $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  89         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) $(LINUX_FORMAT)
  90         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) modules
  91
  92 $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  93         cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
  94         touch -c $(LINUX_KERNEL)
  95
  96 $(LINUX_DIR)/.modules_done: $(LINUX_KERNEL)
  97         rm -rf $(BUILD_DIR)/modules
  98         $(MAKE) -C $(LINUX_DIR) DEPMOD=true INSTALL_MOD_PATH=$(BUILD_DIR)/modules modules_install
  99         tar -C $(BUILD_DIR)/modules/lib -cjf openwrt-kmodules.tar.bz2 modules
 100         touch $(LINUX_DIR)/.modules_done
 101
 102
 103 $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
 104         mkdir -p $(STAGING_DIR)/include
 105         tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
 106         tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
 107
 108 linux: $(LINUX_DIR)/.modules_done $(TARGET_MODULES_DIR)
 109
 110 $(TARGET_MODULES_DIR):
 111         -mkdir -p $(TARGET_MODULES_DIR)
 112         cp $(LINUX_DIR)/drivers/net/wl/wl.o $(TARGET_MODULES_DIR)
 113         cp $(LINUX_DIR)/drivers/net/et/et.o $(TARGET_MODULES_DIR)
 114         cp $(LINUX_DIR)/drivers/net/diag/diag.o $(TARGET_MODULES_DIR)
 115
 116 linux-source: $(DL_DIR)/$(LINUX_SOURCE)
 117
 118 # This has been renamed so we do _NOT_ by default run this on 'make clean'
 119 linuxclean: clean
 120         rm -f $(LINUX_KERNEL)
 121         -$(MAKE) -C $(LINUX_DIR) clean
 122
 123 linux-dirclean:
 124         rm -rf $(LINUX_DIR)
 125
 126 linux-headers: $(LINUX_DIR)/.configured
 127
 128 endif