修改build-dir/conf/local.conf配置文件
bitbake命令单独编译u-boot:
$ bitbake -c compile -f u-boot-imx
$ bitbake -c deploy -f u-boot-imx //部署编译生成的u-boot镜像到deploy
bitbake命令单独编译kernel:
bitbake -c compile -f linux-imx //编译内核
bitbake -c deploy -f linux-imx //部署内核镜像到deploy目录