Blaizzy
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nativ
Nativ is a native macOS app that lets you run AI models locally on Apple silicon, offering chat, model management, performance analytics, and an OpenAI/Anthropic-compatible API server.
AI 仓库情报摘要
FR-AI / ANALYSIS为什么值得关注
它展示了仅用 Swift 从零构建完整操作系统内核和用户空间的可行性，无需任何 Apple 框架或 Linux，包括 SMP、自定义文件系统、网络栈和完整 GUI 桌面环境。
适合谁使用
- 对基于 Swift 的内核感兴趣的 OS 开发者
- 探索系统编程的 Swift 爱好者
- 寻找动手项目的嵌入式系统学习者
- 希望拥有自包含 OS 学习平台的爱好者
典型使用场景
- 学习使用 Swift 进行 OS 内核开发
- 实验自定义文件系统和调度算法
- 为教育目的构建简单 GUI 桌面环境
- 测试裸机网络和设备驱动
项目优势
- 完全自定义的 Swift 代码，从引导到 GUI，无外部依赖
- 真正的 SMP，支持 4 核抢占式调度
- 持久化文件系统（SwiftFS）带有元数据日志
- 完整的网络栈，包括 ARP/IPv4/ICMP/UDP 和 DNS 解析
使用前须知
- 目前仅支持 QEMU virt（Pi 5 配置），不支持真实硬件
- 用户空间和驱动仅在 cpu0 上运行；EL0 用户进程和跨核 TLB 刷新为未来工作
- Unicode 支持仅限于 ASCII，尚无 TCP
README 快速开始
SwiftOS
A real operating system written entirely in Swift — a bare-metal aarch64
kernel (Embedded Swift, no stdlib runtime) with a Linux-feel GUI desktop
running on top. Boots on QEMU's virt machine configured to match a
Raspberry Pi 5 (8 GB): Cortex-A76, 4 cores, 8 GiB RAM. No Linux, and in
the kernel/userland no Apple frameworks at all: every driver, the scheduler,
the filesystem, the window manager, the shell, and the renderer are our own
Swift.
SwiftOS kernel 1.0.0-aarch64 (Embedded Swift, bare metal)
[boot] exception level EL1
[boot] heap 248 MB
[boot] heap self-test ok
[mmu] identity map on, caches enabled
[gic] timer irq 30 at 100 Hz
[fb] ramfb 1280x800 @ 0x0000000044804000
[blk] virtio-blk (slot 29): 65536 sectors (32 MiB)
[disk] persistent storage online
[sched] scheduler up: main + idle + kworker, quantum 50 ms
[input] virtio tablet (slot 30)
[input] virtio keyboard (slot 31)
[boot] login session started — compositor running
Features
Kernel
- Device-tree machine discovery (FDT parser): RAM size, CPUs, GIC, UART, fw_cfg, virtio-mmio slots, PSCI method — no hardcoded platform addresses
- Boot at EL2→EL1, FP/SIMD bring-up on all 4 cores, PL011 UART console
- Real SMP: all 4 cores schedule threads off a global run queue
(baton-locked context switch, per-core 100 Hz ticks and idles, cross-core
kill/reap, Linux-style %CPU —
smpdemo 3shows ~300% across cores) - Panic broadcast: any core's panic halts the others via IPI
- MMU + caches identity-mapping the full 8 GiB, 1 GiB kernel heap
- MMU + caches (identity map), page-bitmap physical allocator + boundary-tag
heap backing the Swift runtime's
posix_memalign/free - GICv2 + ARM generic timer (100 Hz tick), full exception vector table
- Preemptive round-robin kernel threads (50 ms quantum, context switch in the timer IRQ) with real per-thread CPU accounting
- Scheduled EL0 user processes (
urun): real user-mode threads with per-process L2/L3 page tables, SVC syscall ABI, preemption and migration across cores (per-core page-table pairs + switch-time TLB flush), containment on faults, kill/reap with full teardown - virtio-blk storage + SwiftFS, our own filesystem — now with a metadata journal (sector-level redo log, mount-time replay): verified consistent after SIGKILL mid-write, three cycles
- Networking: virtio-net
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