| menu "Kernel" |
| |
| config BR2_LINUX_KERNEL |
| bool "Linux Kernel" |
| help |
| Enable this option if you want to build a Linux kernel for |
| your embedded device |
| |
| if BR2_LINUX_KERNEL |
| |
| # |
| # Version selection. We provide the choice between: |
| # |
| # 1. A single fairly recent stable kernel version |
| # 2. In case an internal toolchain has been built, the same kernel |
| # version as the kernel headers |
| # 3. A custom stable version |
| # 4. A custom tarball |
| # |
| choice |
| prompt "Kernel version" |
| default BR2_LINUX_KERNEL_3_2 |
| |
| config BR2_LINUX_KERNEL_3_2 |
| bool "3.2.6" |
| |
| config BR2_LINUX_KERNEL_SAME_AS_HEADERS |
| bool "Same as toolchain kernel headers" |
| depends on BR2_TOOLCHAIN_BUILDROOT |
| help |
| This option will re-use the same kernel sources as the one |
| that have been used for the kernel headers of the |
| cross-compiling toolchain. Having the same version for the |
| kernel running on the system and for the kernel headers is |
| not a requirement, but using the same version allows to |
| download only one tarball of the kernel sources. |
| |
| config BR2_LINUX_KERNEL_CUSTOM_VERSION |
| bool "Custom version" |
| help |
| This option allows to use a specific 2.6.x or 2.6.x.y |
| official versions, as available on kernel.org |
| |
| config BR2_LINUX_KERNEL_CUSTOM_TARBALL |
| bool "Custom tarball" |
| help |
| This option allows to specify the http or ftp location of a |
| specific kernel source tarball |
| |
| config BR2_LINUX_KERNEL_CUSTOM_GIT |
| bool "Custom Git tree" |
| help |
| This option allows Buildroot to get the Linux kernel source |
| code from a Git repository. |
| |
| endchoice |
| |
| config BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE |
| string "Kernel version" |
| depends on BR2_LINUX_KERNEL_CUSTOM_VERSION |
| |
| config BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION |
| string "URL of custom kernel tarball" |
| depends on BR2_LINUX_KERNEL_CUSTOM_TARBALL |
| |
| config BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL |
| string "URL of custom Git repository" |
| depends on BR2_LINUX_KERNEL_CUSTOM_GIT |
| |
| config BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION |
| string "Custom Git version" |
| depends on BR2_LINUX_KERNEL_CUSTOM_GIT |
| |
| config BR2_LINUX_KERNEL_VERSION |
| string |
| default "3.2.6" if BR2_LINUX_KERNEL_3_2 |
| default BR2_DEFAULT_KERNEL_HEADERS if BR2_LINUX_KERNEL_SAME_AS_HEADERS |
| default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE if BR2_LINUX_KERNEL_CUSTOM_VERSION |
| default "custom" if BR2_LINUX_KERNEL_CUSTOM_TARBALL |
| default $BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION if BR2_LINUX_KERNEL_CUSTOM_GIT |
| |
| # |
| # Patch selection |
| # |
| |
| config BR2_LINUX_KERNEL_PATCH |
| string "Custom kernel patches" |
| help |
| A space-separated list of patches to apply to the |
| kernel. Each patch can be described as an URL, a local file |
| path, or a directory. In the case of a directory, all files |
| matching linux-*.patch in the directory will be applied. |
| |
| # |
| # Configuration selection |
| # |
| |
| choice |
| prompt "Kernel configuration" |
| default BR2_LINUX_KERNEL_USE_DEFCONFIG |
| |
| config BR2_LINUX_KERNEL_USE_DEFCONFIG |
| bool "Using a defconfig" |
| |
| config BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG |
| bool "Using a custom config file" |
| |
| endchoice |
| |
| config BR2_LINUX_KERNEL_DEFCONFIG |
| string "Defconfig name" |
| depends on BR2_LINUX_KERNEL_USE_DEFCONFIG |
| help |
| Name of the defconfig file to use, without the trailing |
| _defconfig |
| |
| config BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE |
| string "Configuration file path" |
| depends on BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG |
| help |
| Path to the kernel configuration file |
| |
| # |
| # Binary format |
| # |
| |
| choice |
| prompt "Kernel binary format" |
| |
| config BR2_LINUX_KERNEL_UIMAGE |
| bool "uImage" |
| depends on BR2_arc || BR2_arm || BR2_armeb || BR2_bfin || BR2_powerpc || BR2_avr32 || BR2_sh || BR2_sh64 |
| |
| config BR2_LINUX_KERNEL_BZIMAGE |
| bool "bzImage" |
| depends on BR2_i386 || BR2_x86_64 |
| |
| config BR2_LINUX_KERNEL_ZIMAGE |
| bool "zImage" |
| depends on BR2_arm || BR2_armeb || BR2_powerpc || BR2_sparc || BR2_sh || BR2_sh64 || BR2_xtensa |
| |
| config BR2_LINUX_KERNEL_APPENDED_ZIMAGE |
| bool "zImage with appended DT" |
| depends on BR2_arm || BR2_armeb |
| select BR2_LINUX_KERNEL_DTS_SUPPORT |
| select BR2_LINUX_KERNEL_APPENDED_DTB |
| |
| |
| config BR2_LINUX_KERNEL_VMLINUX_BIN |
| bool "vmlinux.bin" |
| depends on BR2_mips || BR2_mipsel || BR2_sh || BR2_sh64 |
| |
| config BR2_LINUX_KERNEL_VMLINUX |
| bool "vmlinux" |
| |
| config BR2_LINUX_KERNEL_VMLINUZ |
| bool "vmlinuz" |
| depends on BR2_mips || BR2_mipsel |
| |
| config BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM |
| bool "custom target" |
| help |
| For certain cases a board-specific target image must be |
| used. For example, on powerPC where the OpenFirmware |
| description is attached in a board-specific kernel image |
| target like 'cuImage.mpc8379_rdb'. |
| |
| Select this option and specify the make target in "Kernel |
| image target name". |
| |
| endchoice |
| |
| config BR2_LINUX_KERNEL_IMAGE_TARGET_NAME |
| string "Kernel image target name" |
| depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM |
| help |
| Specify the kernel make target to build the kernel that you |
| need. |
| |
| config BR2_LINUX_KERNEL_DTS_SUPPORT |
| bool "Build a Device Tree Blob (DTB)" |
| help |
| Compile one or more device tree sources into device tree blobs. |
| Select the dts files to compile in the options below. |
| |
| if BR2_LINUX_KERNEL_DTS_SUPPORT |
| |
| # We have mainly three cases when it comes to device tree support: |
| # 1) We don't want any support at all. Then the ..DTS_SUPPORT |
| # variable won't be set |
| # 2) (removed) |
| # 3) We want device tree support, but the kernel requires us to |
| # build the device tree blob separately. In this case, some |
| # more logic will be needed. |
| |
| config BR2_LINUX_KERNEL_APPENDED_DTB |
| bool |
| |
| choice |
| prompt "Device tree source" |
| default BR2_LINUX_KERNEL_USE_INTREE_DTS |
| |
| config BR2_LINUX_KERNEL_USE_INTREE_DTS |
| bool "Use a device tree present in the kernel." |
| help |
| Use a device tree source distributed with |
| the kernel sources. The dts files are located |
| in the arch/<arch>/boot/dts folder. |
| |
| config BR2_LINUX_KERNEL_USE_CUSTOM_DTS |
| bool "Use a custom device tree file" |
| help |
| Use a custom device tree file, i.e, a device |
| tree file that does not belong to the kernel |
| source tree. |
| endchoice |
| |
| config BR2_LINUX_KERNEL_INTREE_DTS_NAME |
| string "Device Tree Source file names" |
| depends on BR2_LINUX_KERNEL_USE_INTREE_DTS |
| help |
| Name of the device tree source file, without |
| the trailing .dts. You can provide a list of |
| dts files to build, separated by spaces. |
| |
| config BR2_LINUX_KERNEL_CUSTOM_DTS_PATH |
| string "Device Tree Source file paths" |
| depends on BR2_LINUX_KERNEL_USE_CUSTOM_DTS |
| help |
| Path to the device tree source files. You can |
| provide a list of dts paths to copy and build, |
| separated by spaces. |
| |
| endif |
| |
| config BR2_LINUX_KERNEL_INSTALL_TARGET |
| bool "Install kernel image to /boot in target" |
| depends on !BR2_TARGET_ROOTFS_INITRAMFS |
| help |
| Select this option to have the kernel image installed to |
| /boot in the target root filesystem, as is typically done on |
| x86/x86_64 systems. |
| |
| Note that this option also installs the Device Tree Blobs to |
| /boot if DTBs have been generated by the kernel build |
| process. |
| |
| # Linux extensions |
| source "linux/Config.ext.in" |
| |
| endif # BR2_LINUX_KERNEL |
| |
| endmenu |
