.. vim: syntax=rst

yocto构建 imx8Mmini 镜像
==============================

**关键词：** yocto 构建 imx8mmini官方镜像


**主要内容：**


**文档参考：**

**最新文档** https://taotaodiy-yocto.readthedocs.io/en/latest/yocto/project-imx8Mmini.html

.. image:: image/yocto/yocto-taotaodiy.jpeg
	:alt: yocto-taotaodiy
	:align: center

更新repo工具
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mkdir ~/bin (this step may not be needed if the bin folder already exists)
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
export PATH=~/bin:$PATH

yocto 构建
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$ mkdir imx-yocto-bsp
$ cd imx-yocto-bsp
$ repo init -u https://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-zeus -m imx-5.4.47-2.2.0.xml
$ repo sync
以上步骤，生成的文件夹在服务器/home/yening/ebf_repo/imx-yocto-bsp路径下

$DISTRO=fsl-imx-wayland MACHINE=imx8mmevk source imx-setup-release.sh -b imx8mmevk_wayland
$bitbake fsl-image-validation-imx

问题1
------------------------------
如何烧录

uuu 工具

uuu -b emmc bootloader Write bootloader to emmc
uuu -b emmc_all bootloader rootfs.sdcard Write rootfs to emmc
uuu -b emmc_all bootloader rootfs.sdcard.bz2/* Decompress rootfs and write - rootfs to emmc
uuu -b sd bootloader Write bootloader to sd card
uuu -b sd_all bootloader rootfs.sdcard Write rootfs to sd card
uuu -b sd_all bootloader rootfs.sdcard.bz2/* Decompress rootfs and write - rootfs to sd card
uuu -b qspi qspi_bootloader write bootloader to qspi
uuu -b qspi qspi_bootloader m4image write m4image to qpsi
uuu -b spl bootloader Download SPL and uboot

uuu -b emmc_all imx-boot-imx8mmevk-sd.bin-flash_evk fsl-image-validation-imx-imx8mmevk-20210709022132.rootfs.wic.bz2

uuu -b emmc_all imx-boot-imx8mmevk-sd.bin-flash_evk imx-image-core-lubancat-8mini-20210710060704.rootfs.wic.bz2

uuu -b emmc_all imx-boot-lubancat-8mini-sd.bin-flash_evk  imx-image-core-lubancat-8mini-20210710060704.rootfs.wic.bz2

问题2
------------------------------
ERROR: No space left on device or exceeds fs.inotify.max_user_watches?

inode 用光了


vim /etc/sysctl.conf   添加下面参数
#Inotify监听文件数达到上限
fs.inotify.max_user_watches = 99999999

立即生效
sysctl -p /etc/sysctl.conf 


问题3
------------------------------
单独编译u-boot

cd imx-yocto-bsp
source setup-environment build-xwayland
bitbake -c cleansstate u-boot
bitbake -c compile u-boot -f
bitbake -c deploy u-boot
bitbake imx-image-full

imx8Mmini/imx-yocto-bsp/imx8mmevk_wayland/tmp/deploy/images/imx8mmevk/imx-boot 快捷方式 指向 下面的文件
imx-yocto-bsp/imx8mmevk_wayland/tmp/deploy/images/imx8mmevk/imx-boot-imx8mmevk-sd.bin-flash_evk

使用UUU工具烧录


yocto 修改
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
添加层 meta-ebf 由 imx-yocto-bsp/sources/meta-imx 复制得到

添加 脚本 ebf-setup-release.sh

添加硬件 lubancat-6ul lubancat-8mini
imx-yocto-bsp/sources/meta-lubancat/meta-bsp/conf/machine/lubancat-6ul
imx-yocto-bsp/sources/meta-lubancat/meta-bsp/conf/machine/lubancat-8mini

添加镜像
imx-yocto-bsp/sources/meta-lubancat/meta-sdk/recipes-fsl/images/lubancat-carp-console.bb
imx-yocto-bsp/sources/meta-lubancat/meta-sdk/recipes-fsl/images/lubancat-carp-qt.bb

DISTRO=fsl-imx-wayland MACHINE=lubancat-8mini source lubancat-setup-release.sh -b lubancat_8mini_wayland
DISTRO=fsl-imx-wayland MACHINE=lubancat-8mini source lubancat-setup-release.sh -b lubancat_8mini_linuxfb
DISTRO=fsl-imx-wayland MACHINE=lubancat-8mini source lubancat-setup-release.sh -b lubancat_8mini_eglfs

bitbake lubancat-yocto-console
bitbake lubancat-yocto-qt