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README
Apache-2.0

文档版本 v0.1 基于 NXOS develop 分支

如果您在文档中发现了问题或者想参与文档的编写,可以在文档仓库提出 issuse 或者提交 pr : nxos-doc

文档目录

NXOS(即Next XBook Operating System)是一个跨平台的简洁、高性能、高稳定性的支持多核的混合内核,它将应用于桌面操作系统、服务器操作系统、移动终端操作系统等领域。

我们以简洁、高效、稳定为核心,用比较简洁高效的方式去实现一些功能,去掉一些复杂冗余的功能,化繁为简。

NXOS 是一个分时多进程/多线程(也支持实时优先级),支持 MMU 的现代操作系统,它和 Linux 内核, WindowsNT 内核是同一个数量级的。

NXOS 采用混合内核架构,即宏内核和微内核相结合。这样可以减小内核代码,增加功能可扩展性,功能模块是独立的进程,添加和删除模块就是进程的创建和关闭。

目标

NXOS 的初期目标是运行在一些高性能的嵌入式设备上,比如手机终端,游戏掌机等。后期目标是能够作为服务器使用,甚至是作为桌面操作系统使用。

内核就只负责基础功能的支持,平台移植和驱动的移植,具体如何使用,可以根据用户态的 sdk 和服务,应用程序去构建应用。

功能

NXOS 支持 SMP 多核,多架构,多平台。

功能 描述
物理内存管理 buddy伙伴算法
虚拟内存管理 heapCache算法
线程管理 以线程为最小调度单元
SMP多核调度 支持线程绑定核,处理器均衡负载
支持中断管理 中断管理框架,以及延迟中断队列机制
支持定时器 基于ticks实现的定时器,基于线性链表实现
支持虚拟地址 在MMU的基础上对内核和进程进行隔离
支持进程 可以运行用户态的程序
支持串口输入输出 可以通过串口输出调试,也可以通过串口输入按键
支持vfs 虚拟文件系统,目前支持cpio只读文件系统实现
支持gdb调试内核 qemu平台支持gdb调试,并搭配了vscode图形化调试
彩色日志输出 支持配置日志输出时间,格式,名称,颜色,消息等级等
其他功能正在开发中,敬请期待! ...

平台支持

ARCH PLATFORM STATUS
x86 i386 DONE
riscv64 qemu DONE
riscv64 k210 DONE
riscv64 d1 DONE
riscv64 hifive unmached DONE
x86-64 amd64 TODO
arm64 qemu TODO
arm32 qemu TODO
loongArch qemu TODO

许可协议

NXOS采用 Apache-2.0 开源协议,可以自由的复制和修改代码,只需要保留版权说明即可,无潜在的商业风险。

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