NXP i.MX 8M Mini 环境的搭建

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NXP i.MX 8M Mini 环境的搭建

记录下如何搭建NXP i.MX 8M 的开发环境。

1. 看文档 / 找资料
不管任何时候，接触任何新的平台或学习新的知识，首先就是看官网提供的文档，或搜索下是否有相关的资料。


找到开发板的文档入口 : Evaluation Kit for the i.MX 8M Mini Applications Processor 详细介绍了开发板的资源以及相关资料下载路径。


详细介绍了各个文档的作用

2. 源码下载
阅读下载的文章中i.MX_Yocto_Project_User’s_Guide.pdf详细介绍了下载源码的步骤。

1. <font size="3" face="微软雅黑">// 下载repo 工具
   
2. curl http://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
   
3. 
   
4. // 下载源码
   
5. mkdir imx-yocto-bsp
   
6. cd imx-yocto-bsp
   
7. repo init -u http://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-rocko -m imx-4.9.88-2.0.0_ga.xml
   
8. repo sync
   
9. 
   
10. </font>

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源码下载过程遇到的错误1 : repo init 提示 fatal: Cannot get http://gerrit.googlesource.com/git-repo/clone.bundle

1. <font size="3" face="微软雅黑">➜  imx-yocto-bsp ./repo init -u http://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-rocko　-m　imx-4.9.88-2.0.0_ga.xml
   
2. fatal: Cannot get http://gerrit.googlesource.com/git-repo/clone.bundle
   
3. fatal: error [Errno 101] Network is unreachable
   
4. fatal: cloning the git-repo repository failed, will remove '.repo/repo'
   
5. 
   
6. // 解决方案：　
   
7. 
   
8. 先单独克隆repo,然后将git-repo里面的repo文件复制到bin目录，在同步源码的工作目录新建.repo文件夹，把git-repo重命名为repo复制到.repo目录下：
   
9. 
   
10. git clone http://gerrit-googlesource.lug.ustc.edu.cn/git-repo
    
11. 
    
12. </font>

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源码下载过程遇到的错误2 : ImportError: cannot import name 'spawn’

1. <font size="3" face="微软雅黑">// 运行错误
   
2. ➜  imx-yocto-bsp bitbake fsl-image-validation-imx
   
3. Traceback (most recent call last):
   
4.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/bin/bitbake", line 31, in <module>
   
5.     import bb
   
6.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/__init__.py", line 79, in <module>
   
7.     from bb import fetch2 as fetch
   
8.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/fetch2/__init__.py", line 1843, in <module>
   
9.     from . import clearcase
   
10.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/fetch2/clearcase.py", line 72, in <module>
    
11.     from   distutils import spawn
    
12. ImportError: cannot import name 'spawn'
    
13. 
    
14. // 解决方案
    
15. 安装sudo apt-get install python3-distutils 之后解决
    
16. 
    
17. </font>

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源码下载过程遇到的错误3 : ERROR: Unable to start bitbake server

1. <font size="3" face="微软雅黑">ERROR: Unable to start bitbake server
   
2. ERROR: Last 10 lines of server log for this session (/home/mike/Work/nxp-imx8/imx-yocto-bsp/bitbake-cookerdaemon.log):
   
3.     self.cooker = bb.cooker.BBCooker(self.configuration, self.featureset)
   
4.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/cooker.py", line 197, in __init__
   
5.     self.initConfigurationData()
   
6.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/cooker.py", line 356, in initConfigurationData
   
7.     self.databuilder.parseBaseConfiguration()
   
8.   File "/home/mike/Work/nxp-imx8/imx-yocto-bsp/sources/poky/bitbake/lib/bb/cookerdata.py", line 316, in parseBaseConfiguration
   
9.     raise bb.BBHandledException
   
10. bb.BBHandledException
    
11. ERROR: The following required tools (as specified by HOSTTOOLS) appear to be unavailable in PATH, please install them in order to proceed:
    
12.   chrpath
    
13.   
    
14. //解决方案
    
15. sudo apt-get install chrpath
    
16. sudo apt-get install texinfo
    
17. 
    
18. </font>

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下载最新代码

1. <font size="3" face="微软雅黑">//查看最新的提交
   
2. http://source.codeaurora.org/external/imx/imx-manifest/?h=imx-linux-rocko
   
3. // 下载最新代码
   
4. To use this manifest repo, the 'repo' tool must be isntalled first.
   
5. --------------------------------------------------------
   
6. $: mkdir ~/bin
   
7. $: curl http://commondatastorage.googleapis.com/git-repo-downloads/repo  > ~/bin/repo
   
8. $: chmod a+x ~/bin/repo
   
9. $: PATH=${PATH}:~/bin
   
10. 
    
11. To excute
    
12. $: mkdir <release>
    
13. $: cd <release>
    
14. $: repo init -u http://source.codeaurora.org/external/imx/fsl-arm-yocto-bsp -b <branch name> [ -m <release manifest>]
    
15. 
    
16. // 下载imx-linux-sumo分支代码
    
17. repo init -u http://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-sumo -m imx-virt-4.14.98-4.11-0.10_ga.xml
    
18. 
    
19. </font>

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2.1 编译
源码的编译主要使用fsl-setup-release.sh脚本完成
DISTRO=fsl-imx-x11 source fsl-setup-release.sh -b build , 详细用法如下

1. <font size="3" face="微软雅黑">DISTRO=<distro name> MACHINE=<machine name> source fsl-setup-release.sh -b <build dir>
   
2. // DISTRO
   
3. DISTRO= <distro configuration name> is the distro, which configures the build environment and it is stored in meta-fsl-
   
4. bsp-release/imx/meta-sdk/conf/distro .
   
5. 
   
6. 对应源码中的 sources/meta-fsl-bsp-release/imx/meta-sdk/conf/distro/fsl-imx-x11.conf，可以看到
   
7. 
   
8. DISTRO = "fsl-imx-x11"
   
9. 
   
10. // MACHINE
    
11. MACHINE= <machine configuration name> is the machine name which points to the configuration file in conf/machine in
    
12. meta-freescale and meta-fsl-bsp-release.
    
13. 
    
14. // 编译输出的目录
    
15. -b <build dir> specifies the name of the build directory created by the fsl-setup-release.sh script.
    
16. </font>

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通过分析 fsl-setup-release.sh 脚本了解的一些信息

1. <font size="3" face="微软雅黑">// MACHINE默认参数为imx6qpsabresd
   
2. if [ -z "$MACHINE" ]; then
   
3.     echo setting to default machine
   
4.     MACHINE='imx6qpsabresd'
   
5. fi</font>

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build 目录中执行 bitbake -k core-image-minimal , -k 代表 : 发生错误后尽可能继续执行。　编译过程持续 2~3 h

2.2 分析output
参考Yocto Project Reference Manual -> 5.2. The Build Directory - build/ 了解编译成功后各个目录含义


build/downloads/ : 下载的源代码，可以通过修改 build/conf/local.conf中的DL_DIR ?= "${TOPDIR}/downloads"改变路径
build/sstate-cache/ : 含共享状态缓存，可以通过修改 build/conf/local.conf中的SSTATE_DIR ?= "${TOPDIR}/sstate-cache"改变路径
build/tmp/ : 构建系统的输出目录。　可以通过修改 build/conf/local.conf中的TMPDIR = “${TOPDIR}/tmp”"改变路径

３. 固件烧录
NXP 固件烧录借助于uuu (Universal Update Utility) mfgtools，全平台覆盖

Uboot 中通过fastboot 进入烧录模式

1. <font size="3" face="微软雅黑">//fastboot devices
   
2. u-boot=> fastboot  devices
   
3. switch to partitions #0, OK
   
4. mmc1(part 0) is current device
   
5. Starting download of 16776232 bytes
   
6. ..........................................................................
   
7. </font>

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PC端通过UUU 进行烧录

1. <font size="3" face="微软雅黑">sudo ./uuu -b emmc_all imx-boot-imx8mmevk-sd.bin-flash_evk sdcard.img
   
2. </font>

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文章出处：CSDN

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