Gabriel Kaszewski
38f20cc3c4
Complete microkernel boot pipeline: adapter loads only init + storage + display from disk. Init bootstraps all other servers by reading binaries from the storage server via IPC, parsing ELF, creating processes, mapping pages, and spawning threads. New syscalls: - CreateEndpoint: userspace endpoint creation with full capability grant - DebugPutchar: debug output to UART from userspace - MapPage: cross-process page mapping (init loads binaries into children) - SpawnThreadIn: spawn thread in another process via capability Key fixes: - Per-process L1 page tables for VPN[2]=0 (prevents cross-process corruption) - Separate kernel_pt from page_tables[0] (init pid=0 overwrote kernel PT ref) - Thread Running state set in switch_to_next (syscalls rejected without it) - Pending IPC results applied during context switch - SIE disabled during boot (timer can't preempt into unready processes) - User heap VA starts at 0x40000 (avoids shared buffer at 0x30000) - RequestPages maps at user VAs via per-process heap allocator VirtIO GPU: - Adapter probes for GPU device, initializes resource/scanout/backing - Display server writes to mapped framebuffer, flushes via GPU virtqueue - 640x480 BGRA framebuffer with transfer-to-host and resource-flush Storage server: - Userspace VirtIO block driver using pre-mapped MMIO and DMA pages - FAT16 filesystem reader serving file-read requests via IPC - Shared buffer protocol: init writes filename, storage writes file data Echo app for IPC testing (adapter-loaded echo proved the pipeline end-to-end).
34 lines
1.2 KiB
Rust
34 lines
1.2 KiB
Rust
#![no_std]
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use domain::memory::MemoryRegion;
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use types::{
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address::{EntryPoint, PhysicalAddress, StackPointer, VirtualAddress},
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bounded::PageCount,
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id::{CoreId, IrqId, ProcessId},
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permission::PermissionSet,
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time::{Ticks, TimerDuration},
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};
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pub trait Platform {
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fn configure_protection(&mut self, process: ProcessId, regions: &[MemoryRegion]);
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fn enable_user_mode(&mut self, entry: EntryPoint, stack: StackPointer) -> !;
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fn set_timer(&mut self, duration: TimerDuration);
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fn current_ticks(&self) -> Ticks;
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fn mask_irq(&mut self, irq: IrqId);
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fn unmask_irq(&mut self, irq: IrqId);
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fn send_ipi(&mut self, target: CoreId);
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fn core_id(&self) -> CoreId;
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fn num_cores(&self) -> u8;
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fn map_shared(
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&mut self,
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process: ProcessId,
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base: PhysicalAddress,
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size: PageCount,
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permissions: PermissionSet,
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);
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fn halt(&self) -> !;
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fn debug_putchar(&self, byte: u8);
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fn translate_va(&self, process: ProcessId, va: VirtualAddress) -> Option<PhysicalAddress>;
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fn map_user_page(&mut self, process: ProcessId, va: VirtualAddress, pa: PhysicalAddress, writable: bool, executable: bool);
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}
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