rs-dos/rsnix/src/uefi.rs, branch qemu

v0.5.5: crash reports go to a dedicated CRASHLOG USB stick

2026-08-02T13:21:34Z

The fault handler now writes crash.log to the volume labeled CRASHLOG (label-selected via fat::crash_vol), falling back to slot 0. On real hardware the boot USB may be unwritable, so a second stick labeled CRASHLOG survives the write; the shell auto-prints the previous crash report from it at next boot (read_crash_log resolves /disk//crash.log through the FAT path, since Disk nodes hold no cached children). - fat.rs: volume_label() + crash_vol() (no allocation) - fs.rs: write_crash_log targets crash_vol(); read_crash_log prefers the CRASHLOG disk node; drop now-unused first_disk() - mkdisk.sh: --label option - test-fault.sh: boots with a dedicated CRASHLOG stick (mkfs -F 32 -n CRASHLOG), verifies crash.log lands there and NOT on the ESP

rsnix v0.5.1: force the GUI canvas to 800x600 via GOP SetMode

2026-08-01T19:30:48Z

The kernel used to inherit whatever GOP mode the firmware picked (QEMU/OVMF gave 1280x800). Now every surface derives from a fixed 800x600 canvas: - uefi: typed EfiGopQueryMode/SetMode/GetMode fn pointers in GraphicsOutputProtocol (were raw *mut c_void, never called). - gop::select_gop_mode: scan the mode list for an exact 800x600 (32-bit BGR/RGB only, the driver assumes 4 Bpp), SetMode it; fall back to the smallest mode that fits the canvas, then to the firmware's choice. SetMode may move both the mode info pointer and the framebuffer base, so both are re-read after the switch. Boot log: 'gop: mode 3 selected — 800x600 (was 1280x800)'. - tests: relative assertions are resolution-agnostic; test-gfx and test-mouse had a boot-log race (shell line prints before the cursor task line) — now wait for the cursor line instead of grepping once. All four suites pass at 800x600. 0 build warnings.

style: rustfmt field alignment in RuntimeServices

2026-07-31T14:04:41Z

power: proper shutdown via UEFI ResetSystem (ACPI S5)

2026-07-31T14:01:46Z

- uefi.rs: full EFI_RUNTIME_SERVICES layout with reset_system at index 10 (spec order); EfiResetSystem type + RESET_* constants - power.rs: stash the runtime-services table pre-EBS; poweroff() calls ResetSystem(EfiResetShutdown) — still callable after ExitBootServices because we never call SetVirtualAddressMap, so the pointers keep working with physical addresses; falls back to the hlt loop - shell: 'poweroff' and 'exit' shut the machine down (QEMU exits), 'halt' keeps the plain hlt loop

rsnix: memory management — free-list heap, bitmap pages, paging adoption

2026-07-31T13:51:28Z

- uefi.rs: full EfiMemoryType constants (0-14) + memory_type_name(); fix MEMORY_TYPE_LOADER_DATA from 6 to 2 per the UEFI spec - memory.rs: replace the bump allocator with a first-fit free-list heap (splitting, coalescing, 8-byte back-pointer for alignment-safe free); add a bitmap physical page allocator (heap region reserved, page-0 guard, aligned runs); grow the heap from the page allocator on demand - paging.rs: identity page-table helpers — adopt_tables() rebuilds the firmware map into our own tables (OVMF maps its tables read-only, so the firmware tree can't be modified in place) and switches CR3; map_page/unmap_page/is_mapped with 2 MB/1 GB large-page splitting - main.rs: boot self-tests for heap, pages, and paging

restructure: rsnix kernel + shell crate + rsdos entry point

2026-07-31T00:58:31Z

Architecture: rs-dos/ (workspace root, was raisernics/) ├── rsnix/ — kernel lib crate (uefi, serial, gop, ps2, interrupts, memory) ├── shell/ — shell lib crate (prompt, commands, line input) ├── rsdos/ — binary crate (efi_main, init, panic handler) └── rsboot/ — future git submodule No functional changes — boots to shell prompt identically. Version auto-pulled from Cargo.toml via env!("CARGO_PKG_VERSION").