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diff --git a/docs/buildroot.html b/docs/buildroot.html index 8293c8fec..9d6e835f6 100644 --- a/docs/buildroot.html +++ b/docs/buildroot.html @@ -578,87 +578,42 @@ $(ZLIB_DIR)/libz.a: $(ZLIB_DIR)/.configured <h2 id="board_support"> Creating your own board support</h2> - <p>Creating your own board support in Buildroot allows you to have - a convenient place to store your project's target filesystem skeleton - and configuration files for Buildroot, Busybox, uClibc, and the kernel. - - <p>Follow these steps to integrate your board in Buildroot:</p> - - <ol> - <li>Create a new directory in <code>target/device/</code> named - after your company or organization</li> - - <li>Add a line <code>source - "target/device/yourcompany/Config.in"</code> in - <code>target/device/Config.in</code> so that your board appears - in the configuration system</li> - - <li>In <code>target/device/yourcompany/</code>, create a - directory for your project. This way, you'll be able to store - several of your company's projects inside Buildroot.</li> - - <li>Create a <code>target/device/yourcompany/Config.in</code> - file that looks like the following: - -<pre> -menuconfig BR2_TARGET_COMPANY - bool "Company projects" - -if BR2_TARGET_COMPANY - -config BR2_TARGET_COMPANY_PROJECT_FOOBAR - bool "Support for Company project Foobar" - help - This option enables support for Company project Foobar - -endif -</pre> - - Of course, you should customize the different values to match your - company/organization and your project. This file will create a - menu entry that contains the different projects of your - company/organization.</li> - - <li>Create a <code>target/device/yourcompany/Makefile.in</code> - file that looks like the following: - -<pre> -ifeq ($(BR2_TARGET_COMPANY_PROJECT_FOOBAR),y) -include target/device/yourcompany/project-foobar/Makefile.in -endif -</pre> - - </li> - - <li>Create the - <code>target/device/yourcompany/project-foobar/Makefile.in</code> - file. It is recommended that you define a - <code>BOARD_PATH</code> variable set to - <code>target/device/yourcompany/project-foobar</code> as it - will simplify further definitions. Then, the file might define - one or more of the following variables: - <ul> - <li><code>TARGET_SKELETON</code> to a directory that contains - the target skeleton for your project. If this variable is - defined, this target skeleton will be used instead of the - default one. If defined, the convention is to define it to - <code>$(BOARD_PATH)/target_skeleton</code> so that the target - skeleton is stored in the board specific directory.</li> - </ul> - </li> - - <li>In the - <code>target/device/yourcompany/project-foobar/</code> - directory you can store configuration files for the kernel, - Busybox or uClibc. - - You can furthermore create one or more preconfigured configuration - files, referencing those files. These config files are named - <code>something_defconfig</code> and are stored in the toplevel - <code>configs/</code> directory. Your users will then be able - to run <code>make something_defconfig</code> and get the right - configuration for your project</li> - </ol> + <p>Creating your own board support in Buildroot allows users of a + particular hardware platform to easily build a system that is + known to work.</p> + + <p>To do so, you need to create a normal Buildroot configuration + that builds a basic system for the hardware: toolchain, kernel, + bootloader, filesystem and a simple Busybox-only userspace. No + specific package should be selected: the configuration should be + as minimal as possible, and should only build a working basic + Busybox system for the target platform. You can of course use more + complicated configurations for your internal projects, but the + Buildroot project will only integrate basic board + configurations. This is because package selections are highly + application-specific.</p> + + <p>Once you have a known working configuration, run <code>make + savedefconfig</code>. This will generate a + minimal <code>defconfig</code> file at the root of the Buildroot + source tree. Move this file into the <code>configs/</code> + directory, and rename it <code>MYBOARD_defconfig</code>.</p> + + <p>It is recommended to use as much as possible upstream versions + of the Linux kernel and bootloaders, and to use as much as + possible default kernel and bootloader configurations. If they are + incorrect for your platform, we encourage you to send fixes to the + corresponding upstream projects.</p> + + <p>However, in the mean time, you may want to store kernel or + bootloader configuration or patches specific to your target + platform. To do so, create a + directory <code>board/MANUFACTURER</code> and a + subdirectory <code>board/MANUFACTURER/BOARDNAME</code> (after + replacing, of course, MANUFACTURER and BOARDNAME with the + appropriate values, in lower case letters). You can then store + your patches and configurations in these directories, and + reference them from the main Buildroot configuration.</p> <h2 id="using_toolchain">Using the generated toolchain outside Buildroot</h2> |