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mengning edited this page Aug 5, 2013 · 8 revisions

Welcome to the mykernel!

It is a platform to write your own OS kernel,its based on Linux Kernel 3.9.4 source code.

  • Set up this platform

    • install QEMU and download Linux Kernel 3.9.4 source code
    • cd linux-3.9.4
    • patch -p1 < ../mykernel_for_linux3.9.4sc.patch
    • make allnoconfig
    • make
    • qemu -kernel arch/x86/boot/bzImage 从qemu窗口中您可以看到my_start_kernel在执行,同时my_timer_handler时钟中断处理程序周期性执行。
    • cd mykernel 您可以看到qemu窗口输出的内容的代码mymain.c和myinterrupt.c
    • 当前有一个CPU执行C代码的上下文环境,同时具有中断处理程序的上下文环境,我们初始化好了系统环境。
    • 您只要在mymain.c基础上继续写进程描述PCB和进程链表管理等代码,在myinterrupt.c的基础上完成进程切换代码,一个可运行的小OS kernel就完成了。
    • start to write your own OS kernel,injoy it!
  • mykernel patch generated by this command:

    • diff -Naur linux-3.9.4 linux-3.9.4.new/ > mykernel_for_linux3.9.4sc.patch

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