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1. 目录说明 firmware // 存放开发板升级固件及Linux内核文件 initrd // RamDisk初始化代码 linux-kernel-4.4 // 内核源码及编译教程 linux-rootfs // 根文件系统制作教程及SDL集成教程,里面包含一些必须的文件 rock-tool // 这是升级包制作工具,制作教程参照rockchip/linux-rootfs/05_制作升级包镜像.txt tools // 这里面就是烧录开发板的工具,主要是upgrade_tool,用法参照tools/Linux_Upgrade_Tool_v1.2/linux_upgrade_tool_v1.16_help.pdf 2. 刷机 如果只是刷机,只需要用做好的固件(在firmware目录下),按照linux-rootfs/06_烧录镜像到开发板.txt里面的步骤操作即可。 3. 完全从零制作固件 这涉及到的内容就比较多,包括编译内核和做成根文件系统,以及集成驱动、硬件解码、SDL集成等等。 内核编译请参照:rockchip/linux-kernel-4.4/01_内核编译.txt,或者直接使用firmware/linux-boot里面的即可,linux-boot_lvds.img支持lcd屏,linux-boot_vga.img支持vga,二选其一。 根文件系统的做成请参照linux-rootfs目录下面的01到07步骤,依次按照教程操作即可。如下: 《01_制作纯净ubuntu16.04根文件系统.txt》 《02_增加驱动及硬件解码支持.txt》 《03_配置开发板开机自动登录.txt》 《04_SDL集成到根文件系统.txt》 // 此部分可根据需要决定是否执行 《05_制作升级包镜像并烧录.txt》 《06_烧录镜像到开发板.txt》 《07_单独烧录Linux内核.txt》 4. 关于SDL安装说明 SDL可以集成到系统固件里面,让开机自动启动,制作根文件系统时,请执行《04_SDL集成到根文件系统.txt》教程;开发板系统启动后,如果需要更新SDL,请将SDL的可执行文件覆盖到/opt/sdl_bin目录下。 当然也可以跟固件分开,单独安装,制作根文件系统时,请略过《04_SDL集成到根文件系统.txt》,然后通过U盘或者ssh,将SDL的可执行文件复制到开发板,以root权限运行即可。
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