S32G Linux fast boot application doc

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S32G Linux fast boot application doc

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S32G Linux fast boot application doc

This doc explain how to optimize the Linux boot time, Contents as follows:

目录
1 默认BSP28 Linux内核的启动时间分析和优化方向 ..... 2
2 UBoot的优化 .............................................................. 3
2.1 缩小Uboot的DTS尺寸 ............................................ 3
2.2 缩小Uboot的尺寸 .................................................... 4
2.3 去掉等待3S输入时间 .............................................. 4
2.4 配合内核修改的Uboot参数 ..................................... 4
2.5 关闭串口调试信息 .................................................. 5
2.6 MMC read的方法来读取内核和DTB ....................... 5
3 Kernal的优化 ............................................................. 5
3.1 DTB中去掉不用的驱动和代码 ................................. 5
3.2 内核中去掉不用的平台与驱动及相关代码 ............... 6
3.3 内核中去掉不用功能,缩小内核大小 ...................... 7
3.4 去掉initramfs支持 ................................................... 7
3.5 关闭调试信息 .......................................................... 7
3.6 提前eMMC驱动加载时间 ........................................ 7
3.7 将Kernel与DTB打包在一起..................................... 8
4 Rootfs+应用程序的优化 ............................................. 8
5 最终全部启动时间比较 ............................................. 12

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Last update:
‎03-22-2022 03:30 AM
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