ccaa10c509
THE CROSSING - COMPLETE ======================== Successfully transitioned from Physical to Virtual addressing using Sv39 page tables. The kernel now operates in a fully virtualized address space with identity mapping (VA=PA). ARCHITECTURE ------------ 1. Sv39 Page Table Infrastructure (hal/mm.zig): - 3-level page tables (512 entries per level) - 4KB pages with proper PTE bit packing - Bump allocator for page table allocation - map_page/map_range for flexible mapping 2. Kernel Identity Map: - DRAM: 0x80000000-0x88000000 (RWX) - UART: 0x10000000 (RW) - VirtIO MMIO: 0x10001000-0x10009000 (RW) - VirtIO PCI: 0x30000000-0x40000000 (RW) - VirtIO BARs: 0x40000000-0x50000000 (RW) - PLIC: 0x0c000000-0x0c400000 (RW) 3. Boot Sequence Integration: - mm_init(): Initialize page allocator - mm_enable_kernel_paging(): Build identity map, activate SATP - Transparent transition - no code changes required THE MOMENT OF TRUTH ------------------- [MM] Building Sv39 Page Tables... [MM] Activating Identity Map... [MM] ✓ Virtual Memory Active. Reality is Virtual. System continued operation seamlessly: ✓ VirtIO Block initialized ✓ SFS filesystem mounted ✓ GPU probe completed ✓ All MMIO regions accessible STRATEGIC ACHIEVEMENT --------------------- This is the foundation for The Glass Cage (Phase 31.3). We can now create restricted page tables for worker fibers, enforcing true memory isolation without MMU context switches. Files: - core/rumpk/hal/mm.zig: Complete Sv39 implementation - core/rumpk/core/kernel.nim: Boot integration - src/nexus/builder/kernel.nim: Build system integration Next: Phase 31.3 - Worker Isolation (Restricted Page Tables) Build: Validated on RISC-V (rumpk-riscv64.elf) Status: Production-ready - The Sovereign ascends to Virtual Reality |
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|---|---|---|
| .. | ||
| fs | ||
| include | ||
| ion | ||
| loader | ||
| README.md | ||
| channel.nim | ||
| cstubs.c | ||
| fiber.nim | ||
| invariant.nim | ||
| ion.nim | ||
| kernel.nim | ||
| loader.nim | ||
| loader.zig | ||
| overrides.c | ||
| panicoverride.nim | ||
| re-symbol.txt | ||
| ring.nim | ||
| watchdog.nim | ||
README.md
Rumpk Core (L1)
Language: Nim
Purpose: Architecture-agnostic kernel logic
Module Index
| File | Purpose |
|---|---|
kernel.nim |
Main Orchestrator (kmain) |
ion.nim |
ION Control Plane & Channel API |
fiber.nim |
Cooperative fiber abstraction |
watchdog.nim |
Autonomous Immune System (Healer) |
ring.nim |
Lock-free Sovereign ring buffers |
panicoverride.nim |
Freestanding panic handler |
Architecture Independence
This folder contains no architecture-specific code. All platform-specific
details are handled by the HAL layer (../hal/).
Compile-time architecture selection uses Nim's when defined():
when defined(amd64):
const CONTEXT_SIZE = 56
elif defined(arm64):
const CONTEXT_SIZE = 96
elif defined(riscv64):
const CONTEXT_SIZE = 112
Dependencies
- Imports
console_write,rumpk_haltfrom HAL (Zig L0) - Imports
cpu_switch_tofrom arch-specific assembly - Uses
mm:arcmemory management (no GC)
Build
Built via ../build.sh [aarch64|x86_64|riscv64]