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 $(LINUX_DIR):
  23         mkdir -p $@
  24
  25 $(PACKAGE_DIR):
  26         mkdir -p $@
  27
  28 $(DL_DIR)/$(LINUX_SOURCE):
  29         -mkdir -p $(DL_DIR)
  30         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
  31
  32 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  33         -mkdir -p $(KERNEL_BUILD_DIR)
  34         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS) -
  35         touch $@
  36
  37 ifeq ($(KERNEL),2.4)
  38 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  39         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  40           $(LINUX_DIR)/Makefile  \
  41           $(LINUX_DIR)/arch/*/Makefile
  42         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  43         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
  44         touch $@
  45
  46 $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  47         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
  48         touch $@
  49
  50 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.depend_done
  51 else
  52 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  53         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
  54         touch $@
  55 endif
  56
  57 ramdisk-config: $(LINUX_DIR)/.configured FORCE
  58         mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  59         grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  60 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  61         echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
  62         echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
  63         echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
  64         mkdir -p $(BUILD_DIR)/root/etc/init.d
  65         $(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
  66 else
  67         rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
  68         echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  69 endif
  70
  71 $(LINUX_DIR)/vmlinux: $(STAMP_DIR)/.linux-compile pkg-install ramdisk-config
  72         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH)
  73
  74 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
  75         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $< $@
  76         touch -c $(LINUX_KERNEL)
  77
  78 $(LINUX_DIR)/.modules_done:
  79         rm -rf $(KERNEL_BUILD_DIR)/modules
  80         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH="$(TARGET_PATH)" modules
  81         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) DEPMOD=true INSTALL_MOD_PATH=$(KERNEL_BUILD_DIR)/modules modules_install
  82         touch $(LINUX_DIR)/.modules_done
  83
  84 modules: $(LINUX_DIR)/.modules_done
  85 packages: $(TARGETS)
  86
  87 $(STAMP_DIR)/.linux-compile:
  88         @$(MAKE) modules
  89         @$(MAKE) packages
  90         ln -sf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
  91         touch $@
  92
  93 $(KERNEL_IPKG):
  94         rm -rf $(KERNEL_IDIR)
  95         mkdir -p $(KERNEL_IDIR)/etc
  96         $(SCRIPT_DIR)/make-ipkg-dir.sh $(KERNEL_IDIR) ../control/kernel.control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
  97         if [ -f ./config/$(BOARD).modules ]; then \
  98                 cp ./config/$(BOARD).modules $(KERNEL_IDIR)/etc/modules; \
  99         fi
 100         $(IPKG_BUILD) $(KERNEL_IDIR) $(KERNEL_BUILD_DIR)
 101
 102 $(TOPDIR)/.kernel.mk:
 103         echo "BOARD:=$(BOARD)" > $@
 104         echo "LINUX_VERSION:=$(LINUX_VERSION)" >> $@
 105         echo "LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
 106
 107 pkg-install: FORCE
 108         @for pkg in $(INSTALL_TARGETS); do \
 109                 $(IPKG) install $$pkg || echo; \
 110         done
 111
 112 source: $(DL_DIR)/$(LINUX_SOURCE)
 113 prepare: $(LINUX_DIR)/.configured
 114         @mkdir -p $(STAMP_DIR) $(PACKAGE_DIR)
 115
 116 compile: prepare $(STAMP_DIR)/.linux-compile
 117
 118 install: compile $(LINUX_KERNEL)
 119
 120 mostlyclean: FORCE
 121         rm -f $(STAMP_DIR)/.linux-compile
 122         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.modules_done
 123         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.drivers-unpacked
 124         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 125         rm -f $(LINUX_KERNEL)
 126
 127 rebuild: FORCE
 128         -$(MAKE) mostlyclean
 129         if [ -f $(LINUX_KERNEL) ]; then \
 130                 $(MAKE) clean; \
 131         fi
 132         $(MAKE) compile $(MAKE_TRACE)
 133
 134 clean: FORCE
 135         rm -f $(STAMP_DIR)/.linux-compile
 136         rm -rf $(KERNEL_BUILD_DIR)
 137         rm -f $(TARGETS)
 138