# osdev **Repository Path**: fgt1t5y/osdev ## Basic Information - **Project Name**: osdev - **Description**: exchange - **Primary Language**: Unknown - **License**: GPL-3.0 - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2021-04-19 - **Last Updated**: 2021-05-14 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # edu OS An operating system based on Brans' Kernel Development Tutorial Click me to see the video demo! Future goals: 1. Userspace, Port Newlib, Multi-process, multi-thread, IPC, write syscalls, etc(process related stuff) 2. Implement a hobby level TCP/IP stack(Ethernet/ARP/DHCP/IP/UDP/TCP with congestion control and everything..) 3. Graphical User Interface(C/S GUI Server, Composite via IPC, now the GUI is in kernel) 4. Write three GUI user apps(Shell, TCP ChatRoom, Text Editor) # Screenshots ![Alt text](/os_screenshots/ss15.png?raw=true "ss15") ![Alt text](/os_screenshots/ss12.png?raw=true "ss12") ![Alt text](/os_screenshots/ss0.png?raw=true "ss0") ![Alt text](/os_screenshots/ss1.png?raw=true "ss1") # How to run and test edu OS kernel ## Preparation(Ubuntu14.04 is a recommended environment for compiling and running edu os) Simpleos use elf-i686-gcc as cross-compiler, please build the cross compiler on your system first. Remember to replace "CC=i686-pc-btos-gcc" in Makefile with your cross compiler. How to build a cross compiler Or, a rewritten/translated version of the above wiki article in Simplified Chinese Link: 环境搭建与交叉编译器 Download password: 7ksb Then, install nasm ``` sudo apt-get install nasm ``` Run the following script to generate 4 hard disk image ``` ./mkext2image.sh ``` Run the following script to setup the tap network device ``` ./setup_tap_device.sh ``` Note: The path of executable qemu-bridge-helper may vary, and so you should manually replace this path in qemu_run.sh, kvm.sh and debug_qemu.sh first. Use this command to find the path of qemu-bridge-helper ``` cd ~ find . -iname qemu-bridge-helper ``` If you would like to run the os in GUI mode, set the constant GUI_MODE (defined in kmain.c) to 1. If you would like to run the os in Network mode, set the constant NETWORK_MODE (defined in kmain.c) to 1. Now run the following script to compile the kernel ``` ./compile.sh ``` And then choose one of the following simulator to boot edu os. QEMU is more recommended. ## QEMU 1. Run sudo apt-get install qemu-system 2. Run ./qemu_run.sh to boot edu os(or ./kvm.sh if your environment supports kvm) ### Debug with QEMU 1. run ./debug_qemu.sh # Plan #### Mem management        0 Higher half loader [✔]        1 physical memory management [✔]        2 paging(virtual memory management) [✔]        3 kmalloc [✔] #### Filesystem        0 PCI Enumerate,R/W [✔]        1 ATA/DMA Driver [✔]        2 Ext2 Filesystem [✔]        3 Virtual Filesystem [✔] #### Graphical Interface        0 vesa driver, 1024 * 768 color(32-bit color)，framebuffer mode [✔]        1 Milestone(try loading and showing a wallpaper from hardisk!) [✔]        2 Windows compositor, support fonts, buttons,and etc [✔]        3 Write a shell []        4 Write a file browser [] #### Miscellaneous        1 Usermode [✔]        1 Multi-tasking/Simple scheduler []        2 Executable loader(elf) [✔]        3 spinlock, mutex, and other pthread primitives []        4 Add more syscalls, like fork/exec, open, read, etc.. []        5 Port newlib []        6 Write or port some baisc utilities such asenv, rm, cp, mkdir, reboot []        7 Real time clock [✔]        9 stadard input/output stuff [] #### Network protocols        0 Send/Recv raw packets [✔]        1 IP [✔]        2 UDP [✔]        3 ARP [✔]        4 DHCP [✔]        5 TCP []        6 HTTP []