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Gabriel Kaszewski 8d53fa9ac5 refactor(adapter-riscv): split kmain into boot/, devices/ modules

kmain is now 20 lines — six function calls:

  hardware::init        → BSS, MMU, traps, timer, PLIC, kernel
  loader::load_init     → read init.elf, create process, map ELF
  loader::load_server   → read server ELF, create process, map ELF
  storage_setup         → VirtIO block re-init, shared buffer, phys-info
  gpu_setup             → VirtIO GPU init, framebuffer alloc, phys-info
  caps::grant_all       → endpoints, capability grants

New modules:
  boot/hardware.rs   — hardware init (BSS, MMU, traps, kernel)
  boot/loader.rs     — ELF loading, thread setup, enter_userspace
  boot/caps.rs       — endpoint creation, capability grants
  devices/storage_setup.rs — VirtIO block for storage server
  devices/gpu_setup.rs     — VirtIO GPU for display server

All unsafe contained in hw/, mmu/, trap/. Boot and device
modules call safe wrappers.

2026-10-18 13:19:16 +02:00