编译可以直接在RAM下运行的镜像Image

一.前置条件：

# 创建目录保存已经生成的Image,flash-cn10ka.img  rootfs.tar文件
mkdir -p  /home/byzoro/work/ipbu/SDK-12.23.10
cp /home/byzoro/work/cn10ka-switches-release-output/images/Image   /home/byzoro/work/ipbu/SDK-12.23.10/Image-SDK12.23.10-kernel_only
cp /home/byzoro/work/cn10ka-switches-release-output/images/flash-cn10ka.img   /home/byzoro/work/ipbu/SDK-12.23.10/flash-cn10ka.img
cp /home/byzoro/work/cn10ka-switches-release-output/images/rootfs.tar   /home/byzoro/work/ipbu/SDK-12.23.10/rootfs.tar

$ cd /home/ipbu/SDK-12.23.10/
$ bzip2 rootfs.tar  #压缩成bz模式


# 清理已经构建的内容，重新设置config,构建带ramdisk的Image
在xx_output目录下：
make clean; make menuconfig

二.修改config配置，编译出带ramdisk的Image

在xx_output目录下： make clean; make menuconfig

输入Y表示选择，然后会出现✳，接着选择compression方法

设置压缩方法为xz,按空格确认

保存退出，然后在cn10ka-switches-release-output目录下：

sudo make

修改报错

注意在make过程中会报错config缺少分隔符，修改以下两个文件：

这是由于cpss-SDK12.23.10源码的config文件注释符号多了/,需要把/去掉。

vi /home/byzoro/work/cn10ka-switches-release-output/build/cpss-SDK12.23.10/.config

修改 vi /home/byzoro/work/cn10ka-switches-release-output/build/cpss-SDK12.23.10/cpssEnabler/mainExtDrv/src/gtExtDrv/linuxNoKernelModule/drivers/_Makefile

Generated FIT image successfully
INFO: cmd: "mkdir -p "/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp"" (stderr):
INFO: cmd: "rm -rf "/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp"/*" (stderr):
INFO: cmd: "mkdir -p "/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp"" (stderr):
INFO: cmd: "cp -a "/home/byzoro/work/cn10ka-switches-release-output/target" "/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp/root"" (stderr):
INFO: cmd: "find '/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp/root' -depth -type d -printf '%P\0' | xargs -0 -I {} touch -r '/home/byzoro/work/cn10ka-switches-release-output/target/{}' '/home/byzoro/work/cn10ka-switches-release-output/build/genimage.tmp/root/{}'" (stderr):
INFO: cmd: "mkdir -p "/home/byzoro/work/cn10ka-switches-release-output/images"" (stderr):
INFO: vfat(boot.vfat): cmd: "dd if=/dev/zero of="/home/byzoro/work/cn10ka-switches-release-output/images/boot.vfat" seek=959447040 count=0 bs=1 2>/dev/null" (stderr):
INFO: vfat(boot.vfat): cmd: "mkdosfs   '/home/byzoro/work/cn10ka-switches-release-output/images/boot.vfat'" (stderr):
INFO: vfat(boot.vfat): adding file 'Image' as 'Image' ...
INFO: vfat(boot.vfat): cmd: "MTOOLS_SKIP_CHECK=1 mcopy -sp -i '/home/byzoro/work/cn10ka-switches-release-output/images/boot.vfat' '/home/byzoro/work/cn10ka-switches-release-output/images/Image' '::'" (stderr):
INFO: hdimage(hdimage.img): adding partition 'boot' (in MBR) from 'boot.vfat' ...
INFO: hdimage(hdimage.img): adding partition 'rootfs' (in MBR) from 'rootfs.ext4' ...
INFO: hdimage(hdimage.img): adding partition '[MBR]' ...
INFO: hdimage(hdimage.img): writing MBR

注意现在生成的Image的大小是大于300MB的。

构建成功之后把Image，复制并命名为Image-SDK12.23.10-ramdisk

cp cn10ka-switches-release-output/images/Image ipbu/SDK-12.23.10/Image-SDK12.23.10-ramdisk

三.在开发板的内存中运行Image-ramdisk

注意：不要使用dhcp

1.确认开发板和tftp服务器的连通性。

printenv serverip

ping 192.168.2.2

crb106s> ping 192.168.2.2
Waiting for RPM0 LMAC3 link status... SGMII [1G]
Using rvu_pf#3 device
host 192.168.2.2 is alive

2.从tftp服务器上下载Image-ramdisk镜像

tftpboot $loadaddr /var/lib/tftpboot/Image-SDK12.23.10-ramdisk

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• 本文作者： CoderSong
• 本文链接： https://jack-song-gif.github.io/2024/03/19/编译可以直接在RAM下运行的镜像Image/
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