Yocto u-boot 自定义命令 [英] Yocto u-boot Custom Commands

问题描述

在 Yocto 设置(目前使用赛灵思的 Petalinux 2016.4)中向 u-boot 添加自定义命令的正确方法是什么?

1. 是否应该通过recipe/patch将相关源文件添加到u-boot源中，以包含在u-boot的编译中?

2. 是否有更好的方法在开发过程中执行此操作以加快周转速度.

3. 代码应该放在哪个文件夹中 - 在 u-boot/board 下或添加到 u-boot/commands 中?

谢谢

解决方案

恕我直言，您有两个选项可以将额外的源代码添加到您的 YP 版本中:

1. 如果您只有少量更改:将补丁添加到您的图层并通过SRC_URI激活"它们.
2. 如果您有更多更改:为您的"U-Boot 版本创建一个单独的 git 分支/存储库.

测试更改的最快方法可能是在某处签出单独的 U-Boot 存储库并使用生成的 SDK.另一种方法可能是使用 devshell [1]

我不是 U-Boot 源代码布局的专家，但我会说这取决于它是哪种类型的命令.如果它是像 date 这样的通用"目录，cmd/ 子目录会是最好的.

如果您正在寻找可以作为工作基础的示例，cmd/misc.c 中的 timer 命令可能是一个好的开始.

[1] http://www.openembedded.org/wiki/Devshell

What is the correct way of adding custom commands to u-boot in a Yocto setup (currently using Petalinux 2016.4 by Xilinx)?

1. Should I add the relevant source files to the u-boot source through a recipe/patch, to be included in the compilation of u-boot?

2. Is there a better way to do this during development to get a faster turn around.

3. In what folder should the code be placed - under u-boot/board or added to u-boot/commands?

Thanks

解决方案

IMHO you have two options for adding the additional sourcecode to your YP build:

1. If you have only a small number of changes: Add the patches to your layer and "activate" them via SRC_URI.
2. If you have more changes: create a separate git branch/repo for "your" U-Boot version.

The fastest way of testing your changes may be to checkout a separate U-Boot repo somewhere and use a generated SDK. Another way may be to use the devshell [1]

I'm not an expert on U-Boot's source layout, but I would say it depends which type of command it is. If it's a "generic" one like date the cmd/ subdirectory would be best.

If you're looking for an example on which you can base your work maybe the timer command in cmd/misc.c would be a good start.

[1] http://www.openembedded.org/wiki/Devshell

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