Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 1 | ############################################################################### |
| 2 | # |
| 3 | # Linux kernel 2.6 target |
| 4 | # |
| 5 | ############################################################################### |
| 6 | LINUX26_VERSION=$(call qstrip,$(BR2_LINUX_KERNEL_VERSION)) |
| 7 | |
| 8 | # Compute LINUX26_SOURCE and LINUX26_SITE from the configuration |
| 9 | ifeq ($(LINUX26_VERSION),custom) |
| 10 | LINUX26_TARBALL:=$(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION)) |
| 11 | LINUX26_SITE:=$(dir $(LINUX26_TARBALL)) |
| 12 | LINUX26_SOURCE:=$(notdir $(LINUX26_TARBALL)) |
| 13 | else |
| 14 | LINUX26_SOURCE:=linux-$(LINUX26_VERSION).tar.bz2 |
| 15 | LINUX26_SITE:=$(BR2_KERNEL_MIRROR)/linux/kernel/v2.6/ |
| 16 | endif |
| 17 | |
| 18 | LINUX26_DIR:=$(BUILD_DIR)/linux-$(LINUX26_VERSION) |
| 19 | LINUX26_PATCH=$(call qstrip,$(BR2_LINUX_KERNEL_PATCH)) |
| 20 | |
| 21 | LINUX26_MAKE_FLAGS = \ |
| 22 | HOSTCC="$(HOSTCC)" \ |
| 23 | HOSTCFLAGS="$(HOSTCFLAGS)" \ |
| 24 | ARCH=$(KERNEL_ARCH) \ |
| 25 | INSTALL_MOD_PATH=$(TARGET_DIR) \ |
| 26 | CROSS_COMPILE=$(TARGET_CROSS) \ |
| 27 | LDFLAGS="$(TARGET_LDFLAGS)" \ |
| 28 | LZMA="$(LZMA)" |
| 29 | |
| 30 | # Get the real Linux version, which tells us where kernel modules are |
| 31 | # going to be installed in the target filesystem. |
| 32 | LINUX26_VERSION_PROBED = $(shell $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(LINUX26_DIR) --no-print-directory -s kernelrelease) |
| 33 | |
| 34 | ifeq ($(BR2_LINUX_KERNEL_UIMAGE),y) |
| 35 | LINUX26_IMAGE_NAME=uImage |
| 36 | LINUX26_DEPENDENCIES+=$(MKIMAGE) |
| 37 | else ifeq ($(BR2_LINUX_KERNEL_BZIMAGE),y) |
| 38 | LINUX26_IMAGE_NAME=bzImage |
| 39 | else ifeq ($(BR2_LINUX_KERNEL_ZIMAGE),y) |
| 40 | LINUX26_IMAGE_NAME=zImage |
Thomas Petazzoni | b626dc0 | 2010-09-01 15:26:24 +0200 | [diff] [blame^] | 41 | else ifeq ($(BR2_LINUX_KERNEL_VMLINUX_BIN),y) |
Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 42 | LINUX26_IMAGE_NAME=vmlinux.bin |
| 43 | endif |
| 44 | |
| 45 | LINUX26_IMAGE_PATH=$(LINUX26_DIR)/arch/$(KERNEL_ARCH)/boot/$(LINUX26_IMAGE_NAME) |
| 46 | |
| 47 | # Download |
| 48 | $(LINUX26_DIR)/.stamp_downloaded: |
| 49 | @$(call MESSAGE,"Downloading kernel") |
| 50 | $(call DOWNLOAD,$(LINUX26_SITE),$(LINUX26_SOURCE)) |
| 51 | ifneq ($(filter ftp://% http://%,$(LINUX26_PATCH)),) |
| 52 | $(call DOWNLOAD,$(dir $(LINUX26_PATCH)),$(notdir $(LINUX26_PATCH))) |
| 53 | endif |
| 54 | mkdir -p $(@D) |
| 55 | touch $@ |
| 56 | |
| 57 | # Extraction |
| 58 | $(LINUX26_DIR)/.stamp_extracted: $(LINUX26_DIR)/.stamp_downloaded |
| 59 | @$(call MESSAGE,"Extracting kernel") |
| 60 | mkdir -p $(@D) |
| 61 | $(Q)$(INFLATE$(suffix $(LINUX26_SOURCE))) $(DL_DIR)/$(LINUX26_SOURCE) | \ |
| 62 | tar -C $(@D) $(TAR_STRIP_COMPONENTS)=1 $(TAR_OPTIONS) - |
| 63 | $(Q)touch $@ |
| 64 | |
| 65 | # Patch |
| 66 | $(LINUX26_DIR)/.stamp_patched: $(LINUX26_DIR)/.stamp_extracted |
| 67 | @$(call MESSAGE,"Patching kernel") |
| 68 | ifneq ($(LINUX26_PATCH),) |
| 69 | ifneq ($(filter ftp://% http://%,$(LINUX26_PATCH)),) |
| 70 | toolchain/patch-kernel.sh $(@D) $(DL_DIR) $(notdir $(LINUX26_PATCH)) |
| 71 | else ifeq ($(shell test -d $(LINUX26_PATCH) && echo "dir"),dir) |
| 72 | toolchain/patch-kernel.sh $(@D) $(LINUX26_PATCH) linux-\*.patch |
| 73 | else |
| 74 | toolchain/patch-kernel.sh $(@D) $(dir $(LINUX26_PATCH)) $(notdir $(LINUX26_PATCH)) |
| 75 | endif |
| 76 | endif |
| 77 | $(Q)touch $@ |
| 78 | |
| 79 | |
| 80 | # Configuration |
| 81 | $(LINUX26_DIR)/.stamp_configured: $(LINUX26_DIR)/.stamp_patched |
| 82 | @$(call MESSAGE,"Configuring kernel") |
| 83 | ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y) |
| 84 | $(TARGET_MAKE_ENV) $(MAKE1) $(LINUX26_MAKE_FLAGS) -C $(@D) $(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig |
| 85 | else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y) |
| 86 | cp $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE) $(@D)/.config |
| 87 | endif |
Thomas Petazzoni | 100c09a | 2010-06-08 13:56:19 +0200 | [diff] [blame] | 88 | ifeq ($(BR2_ARM_EABI),y) |
| 89 | $(call KCONFIG_ENABLE_OPT,CONFIG_AEABI,$(@D)/.config) |
| 90 | else |
| 91 | $(call KCONFIG_DISABLE_OPT,CONFIG_AEABI,$(@D)/.config) |
| 92 | endif |
| 93 | ifeq ($(BR2_INET_IPV6),y) |
| 94 | $(call KCONFIG_ENABLE_OPT,CONFIG_IPV6,$(@D)/.config) |
| 95 | else |
| 96 | $(call KCONFIG_DISABLE_OPT,CONFIG_IPV6,$(@D)/.config) |
| 97 | endif |
Thomas Petazzoni | f507921 | 2010-06-13 19:19:38 +0200 | [diff] [blame] | 98 | ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y) |
| 99 | # As the kernel gets compiled before root filesystems are |
| 100 | # built, we create a fake initramfs file list. It'll be |
| 101 | # replaced later by the real list, and the kernel will be |
| 102 | # rebuilt using the linux26-rebuild-with-initramfs target. |
| 103 | touch $(BINARIES_DIR)/rootfs.initramfs |
| 104 | $(call KCONFIG_ENABLE_OPT,CONFIG_BLK_DEV_INITRD,$(@D)/.config) |
| 105 | $(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_SOURCE,\"$(BINARIES_DIR)/rootfs.initramfs\",$(@D)/.config) |
| 106 | $(call KCONFIG_ENABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_GZIP,$(@D)/.config) |
Thomas Petazzoni | f507921 | 2010-06-13 19:19:38 +0200 | [diff] [blame] | 107 | endif |
Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 108 | $(TARGET_MAKE_ENV) $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(@D) oldconfig |
| 109 | $(Q)touch $@ |
| 110 | |
Thomas Petazzoni | 4944e8c | 2010-06-13 19:18:34 +0200 | [diff] [blame] | 111 | # Compilation. We make sure the kernel gets rebuilt when the |
| 112 | # configuration has changed. |
| 113 | $(LINUX26_DIR)/.stamp_compiled: $(LINUX26_DIR)/.stamp_configured $(LINUX26_DIR)/.config |
Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 114 | @$(call MESSAGE,"Compiling kernel") |
| 115 | $(TARGET_MAKE_ENV) $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(@D) $(LINUX26_IMAGE_NAME) |
| 116 | @if [ $(shell grep -c "CONFIG_MODULES=y" $(LINUX26_DIR)/.config) != 0 ] ; then \ |
| 117 | $(TARGET_MAKE_ENV) $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(@D) modules ; \ |
| 118 | fi |
| 119 | $(Q)touch $@ |
| 120 | |
| 121 | # Installation |
| 122 | $(LINUX26_DIR)/.stamp_installed: $(LINUX26_DIR)/.stamp_compiled |
| 123 | @$(call MESSAGE,"Installing kernel") |
| 124 | cp $(LINUX26_IMAGE_PATH) $(BINARIES_DIR) |
| 125 | # Install modules and remove symbolic links pointing to build |
| 126 | # directories, not relevant on the target |
| 127 | @if [ $(shell grep -c "CONFIG_MODULES=y" $(LINUX26_DIR)/.config) != 0 ] ; then \ |
| 128 | $(TARGET_MAKE_ENV) $(MAKE1) $(LINUX26_MAKE_FLAGS) -C $(@D) \ |
| 129 | INSTALL_MOD_PATH=$(TARGET_DIR) modules_install ; \ |
| 130 | rm -f $(TARGET_DIR)/lib/modules/$(LINUX26_VERSION_PROBED)/build ; \ |
| 131 | rm -f $(TARGET_DIR)/lib/modules/$(LINUX26_VERSION_PROBED)/source ; \ |
| 132 | fi |
| 133 | $(Q)touch $@ |
| 134 | |
Thomas Petazzoni | dc4d564 | 2010-06-05 21:26:18 +0200 | [diff] [blame] | 135 | linux26: host-module-init-tools $(LINUX26_DEPENDENCIES) $(LINUX26_DIR)/.stamp_installed |
Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 136 | |
Peter Korsgaard | c9ff327 | 2010-07-20 08:45:45 +0200 | [diff] [blame] | 137 | linux26-menuconfig linux26-xconfig linux26-gconfig: host-sed dirs $(LINUX26_DIR)/.stamp_configured |
Thomas Petazzoni | 4944e8c | 2010-06-13 19:18:34 +0200 | [diff] [blame] | 138 | $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(LINUX26_DIR) $(subst linux26-,,$@) |
| 139 | |
Thomas Petazzoni | f507921 | 2010-06-13 19:19:38 +0200 | [diff] [blame] | 140 | # Support for rebuilding the kernel after the initramfs file list has |
| 141 | # been generated in $(BINARIES_DIR)/rootfs.initramfs. |
| 142 | $(LINUX26_DIR)/.stamp_initramfs_rebuilt: $(LINUX26_DIR)/.stamp_installed $(BINARIES_DIR)/rootfs.initramfs |
| 143 | @$(call MESSAGE,"Rebuilding kernel with initramfs") |
| 144 | # Remove the previously generated initramfs which was empty, |
| 145 | # to make sure the kernel will actually regenerate it. |
| 146 | $(RM) -f $(@D)/usr/initramfs_data.cpio.* |
| 147 | # Build the kernel. |
| 148 | $(TARGET_MAKE_ENV) $(MAKE) $(LINUX26_MAKE_FLAGS) -C $(@D) $(LINUX26_IMAGE_NAME) |
| 149 | # Copy the kernel image to its final destination |
| 150 | cp $(LINUX26_IMAGE_PATH) $(BINARIES_DIR) |
| 151 | $(Q)touch $@ |
| 152 | |
| 153 | # The initramfs building code must make sure this target gets called |
| 154 | # after it generated the initramfs list of files. |
| 155 | linux26-rebuild-with-initramfs: $(LINUX26_DIR)/.stamp_initramfs_rebuilt |
| 156 | |
Thomas Petazzoni | 487e21c | 2010-04-03 18:46:46 +0200 | [diff] [blame] | 157 | ifeq ($(BR2_LINUX_KERNEL),y) |
| 158 | TARGETS+=linux26 |
| 159 | endif |
Thomas Petazzoni | af5dc83 | 2010-07-29 15:40:28 +0200 | [diff] [blame] | 160 | |
| 161 | # Checks to give errors that the user can understand |
Peter Korsgaard | 3e5e39a | 2010-09-28 14:43:25 +0200 | [diff] [blame] | 162 | ifeq ($(filter source,$(MAKECMDGOALS)),) |
Thomas Petazzoni | af5dc83 | 2010-07-29 15:40:28 +0200 | [diff] [blame] | 163 | ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y) |
| 164 | ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG)),) |
| 165 | $(error No kernel defconfig name specified, check your BR2_LINUX_KERNEL_DEFCONFIG setting) |
| 166 | endif |
| 167 | endif |
| 168 | |
| 169 | ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y) |
| 170 | ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)),) |
| 171 | $(error No kernel configuration file specified, check your BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE setting) |
| 172 | endif |
Peter Korsgaard | 3e5e39a | 2010-09-28 14:43:25 +0200 | [diff] [blame] | 173 | endif |
| 174 | |
| 175 | endif |