target/linux/kernel.mk

   1 LINUX_SOURCE:=$(LINUX_NAME).tar.bz2
   2 LINUX_SITE=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
   3            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
   4            http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
   5            http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)
   6
   7 KERNEL_IDIR:=$(LINUX_BUILD_DIR)/kernel-ipkg
   8
   9 $(TARGETS): $(PACKAGE_DIR)
  10
  11 $(LINUX_DIR):
  12         mkdir -p $@
  13
  14 $(PACKAGE_DIR):
  15         mkdir -p $@
  16
  17 $(DL_DIR)/$(LINUX_SOURCE):
  18         -mkdir -p $(DL_DIR)
  19         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
  20
  21 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  22         -mkdir -p $(LINUX_BUILD_DIR)
  23         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(LINUX_BUILD_DIR) $(TAR_OPTIONS) -
  24         touch $@
  25
  26 ifeq ($(KERNEL),2.4)
  27 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  28         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  29           $(LINUX_DIR)/Makefile  \
  30           $(LINUX_DIR)/arch/*/Makefile
  31         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  32         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
  33         touch $@
  34
  35 $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  36         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
  37         touch $@
  38
  39 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.depend_done
  40 else
  41 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  42         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
  43         touch $@
  44 endif
  45
  46 ramdisk-config: $(LINUX_DIR)/.configured FORCE
  47         mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  48         grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  49 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  50         echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
  51         echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
  52         echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
  53         mkdir -p $(BUILD_DIR)/root/etc/init.d
  54         $(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
  55 else
  56         rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
  57         echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  58 endif
  59
  60 $(LINUX_DIR)/vmlinux: $(STAMP_DIR)/.linux-compile pkg-install ramdisk-config
  61         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH)
  62
  63 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
  64         $(TARGET_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $< $@
  65         touch -c $(LINUX_KERNEL)
  66
  67 $(LINUX_DIR)/.modules_done:
  68         rm -rf $(LINUX_BUILD_DIR)/modules
  69         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH="$(TARGET_PATH)" modules
  70         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" DEPMOD=true INSTALL_MOD_PATH=$(LINUX_BUILD_DIR)/modules modules_install
  71         touch $(LINUX_DIR)/.modules_done
  72
  73 $(STAMP_DIR)/.linux-compile:
  74         @$(MAKE) $(LINUX_DIR)/.modules_done $(TARGETS) $(KERNEL_IPKG)
  75         ln -sf $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
  76         touch $@
  77
  78 $(KERNEL_IPKG):
  79         rm -rf $(KERNEL_IDIR)
  80         mkdir -p $(KERNEL_IDIR)/etc
  81         $(SCRIPT_DIR)/make-ipkg-dir.sh $(KERNEL_IDIR) ../control/kernel.control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
  82         if [ -f ./config/$(BOARD).modules ]; then \
  83                 cp ./config/$(BOARD).modules $(KERNEL_IDIR)/etc/modules; \
  84         fi
  85         $(IPKG_BUILD) $(KERNEL_IDIR) $(LINUX_BUILD_DIR)
  86
  87 $(BUILD_DIR)/kernel.mk: $(LINUX_DIR) FORCE
  88         echo "BOARD:=$(BOARD)" > $@
  89         echo "LINUX_NAME:=$(LINUX_NAME)" >> $@
  90         echo "LINUX_VERSION:=$(LINUX_VERSION)" >> $@
  91         echo "LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
  92
  93 pkg-install: FORCE
  94         @{ [ "$(INSTALL_TARGETS)" != "" ] && $(IPKG) install $(INSTALL_TARGETS) || true; }
  95
  96 source: $(DL_DIR)/$(LINUX_SOURCE)
  97 prepare: $(BUILD_DIR)/kernel.mk
  98         @mkdir -p $(STAMP_DIR) $(PACKAGE_DIR)
  99         @$(MAKE) $(LINUX_DIR)/.configured
 100
 101 compile: prepare $(STAMP_DIR)/.linux-compile
 102
 103 install: compile $(LINUX_KERNEL)
 104
 105 mostlyclean: FORCE
 106         rm -f $(STAMP_DIR)/.linux-compile
 107         rm -f $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION)/.modules_done
 108         rm -f $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION)/.drivers-unpacked
 109         $(MAKE) -C $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 110         rm -f $(LINUX_KERNEL)
 111
 112 rebuild: FORCE
 113         -$(MAKE) mostlyclean
 114         if [ -f $(LINUX_KERNEL) ]; then \
 115                 $(MAKE) clean; \
 116         fi
 117         $(MAKE) compile $(MAKE_TRACE)
 118
 119 clean: FORCE
 120         rm -f $(STAMP_DIR)/.linux-compile
 121         rm -rf $(LINUX_BUILD_DIR)
 122         rm -f $(TARGETS)