kern

annotate README @ 40:710739e33da8

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- now read_rtc doesn't try to read weekday as it's probably wrong anyway, and doesn't set yearday either - mktime now fixes yearday and weekday - moved init_timer and init_rtc just before enabling the interrupts in main
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 12 Jun 2011 15:45:21 +0300
parents ebe5e0e44a9d
children b4264d173aae
rev   line source
nuclear@4 1 Article 1 source code
nuclear@4 2 ---------------------
nuclear@1 3 Author: John Tsiombikas <nuclear@member.fsf.org>
nuclear@4 4
nuclear@4 5 License: GNU GPL v3 or any later version published by the free software
nuclear@4 6 foundation. See COPYING for details.
nuclear@4 7
nuclear@4 8 About
nuclear@4 9 -----
nuclear@4 10 This is the supplemental source code for the first part of the introduction to
nuclear@4 11 kernel development articles. It deals with booting up from a multiboot-compliant
nuclear@4 12 boot loader and using the VGA for text output.
nuclear@4 13
nuclear@4 14 Compiling & Running
nuclear@4 15 -------------------
nuclear@4 16 To compile kernel image (kernel.elf) just type make (or gmake, if your default
nuclear@4 17 make tool is not GNU make). A script called "run" is supplied that will use qemu
nuclear@4 18 to run the kernel in a virtual machine.
nuclear@4 19
nuclear@4 20 If you wish to boot up the kernel on your computer you need a multiboot
nuclear@4 21 compliant boot loader like GRUB. Since you probably already have GRUB installed
nuclear@4 22 if you're running a GNU/Linux distribution, just add an entry to the GRUB config
nuclear@4 23 file (commonly /boot/grub/menu.lst) similar to this one and reboot:
nuclear@4 24
nuclear@4 25 title My kernel
nuclear@4 26 root (hdX,Y) # where X is the disk number and Y the partition (first being 0)
nuclear@4 27 kernel /path/to/kernel_code/kernel.elf # change this to the actual path
nuclear@4 28
nuclear@4 29 In case you are using GRUB 2 instead of the original GRUB, you'll have to
nuclear@4 30 consult the documentation on how to modify the above into the GRUB 2 syntax.
nuclear@4 31
nuclear@4 32 Disclaimer
nuclear@4 33 ----------
nuclear@4 34 All programs contain bugs, and this sample code will undoubtedly have its share.
nuclear@4 35 Running buggy kernel code on the real machine is very dangerous and may result
nuclear@4 36 in data loss or even damage to your computer in extreme cases. The author
nuclear@4 37 assumes no responsibility for any such eventuality. Run this code on your
nuclear@4 38 computer at your own risk.
nuclear@4 39
nuclear@4 40 Contact
nuclear@4 41 -------
nuclear@4 42 For any comments or suggestions regarding the articles or this supplemental
nuclear@4 43 code, please contact me at nuclear@member.fsf.org