openwrt/include/kernel-build.mk

   1 #
   2 # Copyright (C) 2006 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7 -include $(INCLUDE_DIR)/modules-$(KERNEL).mk
   8
   9 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  10 LINUX_SITE=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
  11            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
  12            http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
  13            http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)
  14
  15 KERNEL_IDIR:=$(KERNEL_BUILD_DIR)/kernel-ipkg
  16 KERNEL_IPKG:=$(KERNEL_BUILD_DIR)/kernel_$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)_$(ARCH).ipk
  17 TARGETS += $(KERNEL_IPKG)
  18 INSTALL_TARGETS += $(KERNEL_IPKG)
  19
  20 $(TARGETS): $(PACKAGE_DIR)
  21
  22 $(PACKAGE_DIR):
  23         mkdir -p $@
  24
  25 $(DL_DIR)/$(LINUX_SOURCE):
  26         -mkdir -p $(DL_DIR)
  27         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
  28
  29 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  30         -mkdir -p $(KERNEL_BUILD_DIR)
  31         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS) -
  32         touch $@
  33
  34 ifeq ($(KERNEL),2.4)
  35 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  36         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  37         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
  38         touch $@
  39
  40 $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  41         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
  42         touch $@
  43
  44 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.depend_done
  45 else
  46 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  47         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
  48         touch $@
  49 endif
  50
  51 ramdisk-config: $(LINUX_DIR)/.configured FORCE
  52         mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  53         grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  54 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  55         echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
  56         echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
  57         echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
  58         mkdir -p $(BUILD_DIR)/root/etc/init.d
  59         $(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
  60         $(CP) ../generic-2.6/files/postinit $(BUILD_DIR)/root/
  61 else
  62         rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
  63         echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  64 endif
  65
  66 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.linux-compile pkg-install ramdisk-config
  67         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) $(KERNELNAME)
  68
  69 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
  70         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $< $@
  71         touch -c $(LINUX_KERNEL)
  72
  73 $(LINUX_DIR)/.modules_done:
  74         rm -rf $(KERNEL_BUILD_DIR)/modules
  75         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) modules
  76         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) DEPMOD=true INSTALL_MOD_PATH=$(KERNEL_BUILD_DIR)/modules modules_install
  77         touch $(LINUX_DIR)/.modules_done
  78
  79 modules: $(LINUX_DIR)/.modules_done
  80 packages: $(TARGETS)
  81
  82 $(LINUX_DIR)/.linux-compile:
  83         @rm -f $(BUILD_DIR)/linux
  84         ln -sf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
  85         @$(MAKE) modules
  86         @$(MAKE) packages
  87         touch $@
  88
  89 $(KERNEL_IPKG):
  90         rm -rf $(KERNEL_IDIR)
  91         mkdir -p $(KERNEL_IDIR)/etc
  92         $(SCRIPT_DIR)/make-ipkg-dir.sh $(KERNEL_IDIR) ../control/kernel.control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
  93         if [ -f ./config/$(BOARD).modules ]; then \
  94                 cp ./config/$(BOARD).modules $(KERNEL_IDIR)/etc/modules; \
  95         fi
  96         $(IPKG_BUILD) $(KERNEL_IDIR) $(KERNEL_BUILD_DIR)
  97
  98 $(TOPDIR)/.kernel.mk: $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL)/Makefile
  99         echo "CONFIG_BOARD:=$(BOARD)" > $@
 100         echo "CONFIG_KERNEL:=$(KERNEL)" >> $@
 101         echo "CONFIG_LINUX_VERSION:=$(LINUX_VERSION)" >> $@
 102         echo "CONFIG_LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
 103
 104 pkg-install: FORCE
 105         @for pkg in $(INSTALL_TARGETS); do \
 106                 $(IPKG) install $$pkg || echo; \
 107         done
 108
 109 download: $(DL_DIR)/$(LINUX_SOURCE)
 110 prepare: $(LINUX_DIR)/.configured
 111         @mkdir -p $(LINUX_DIR) $(PACKAGE_DIR)
 112
 113 compile: prepare $(LINUX_DIR)/.linux-compile
 114
 115 install: compile $(LINUX_KERNEL)
 116
 117 mostlyclean: FORCE
 118         rm -f $(LINUX_DIR)/.linux-compile
 119         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.modules_done
 120         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.drivers-unpacked
 121         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 122         rm -f $(LINUX_KERNEL)
 123
 124 rebuild: FORCE
 125         -$(MAKE) mostlyclean
 126         if [ -f $(LINUX_KERNEL) ]; then \
 127                 $(MAKE) clean; \
 128         fi
 129         $(MAKE) compile $(MAKE_TRACE)
 130
 131 clean: FORCE
 132         rm -f $(STAMP_DIR)/.linux-compile
 133         rm -rf $(KERNEL_BUILD_DIR)
 134         rm -f $(TARGETS)
 135