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Embrace extreme minimalism - cut everything unnecessary

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Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2025-12-28 17:48:51 +00:00
parent 9a2ec2c753
commit 012327c7e7
6 changed files with 477 additions and 207 deletions
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70
kernel/src/main.c
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@@ -1,8 +1,9 @@
/*
* MetalOS Kernel - Main Entry Point
*
* Minimal kernel implementation for running QT6 applications.
* Only implements what's absolutely necessary.
* EXTREME MINIMAL kernel - only what's needed for QT6 Hello World.
* No scheduler, no process management, no filesystem, no nothing.
* Just: boot -> init GPU -> init input -> run app.
*/
#include "kernel/kernel.h"
@@ -11,6 +12,9 @@
/*
* Kernel main entry point
* Called by bootloader with boot information
*
* This is it. The entire OS. No scheduler, no processes, no filesystem.
* Just set up hardware and jump to the QT6 app.
*/
void kernel_main(BootInfo* boot_info) {
// Initialize basic console output using framebuffer
@@ -22,41 +26,55 @@ void kernel_main(BootInfo* boot_info) {
);
console_clear();
console_print("MetalOS Kernel v0.1.0\n");
console_print("=====================\n\n");
console_print("MetalOS v0.1 - MINIMAL\n");
console_print("======================\n\n");
console_print("Initializing minimal kernel...\n");
// TODO: Set up minimal page tables (identity mapped or simple offset)
console_print("[ ] Memory (identity map)\n");
// TODO: Initialize memory management
console_print("[ ] Memory management\n");
// TODO: Set up IDT with only interrupts we need:
// - Keyboard/mouse (USB or PS/2)
// - Timer (for QT event loop)
// - GPU (if needed)
// That's it! Maybe 5 interrupt handlers total.
console_print("[ ] Interrupts (minimal)\n");
// TODO: Initialize interrupt handling
console_print("[ ] Interrupt handling\n");
// TODO: Simple memory allocator (bump allocator is fine)
console_print("[ ] Heap (bump allocator)\n");
// TODO: Initialize PCI bus
console_print("[ ] PCI enumeration\n");
// TODO: Find RX 6600 GPU via PCI (hardcode vendor/device ID)
console_print("[ ] PCI (find GPU only)\n");
// TODO: Initialize GPU driver
console_print("[ ] GPU driver (Radeon RX 6600)\n");
// TODO: Initialize GPU - minimal
// - Enable BAR
// - Init display pipeline
// - Set up framebuffer at 1920x1080 (hardcoded)
console_print("[ ] GPU (RX 6600, 1920x1080)\n");
// TODO: Initialize input devices
console_print("[ ] Input devices\n");
// TODO: Initialize input
// Try PS/2 first (simpler!)
// Fall back to minimal USB XHCI if needed
console_print("[ ] Input (PS/2 or USB)\n");
// TODO: Setup system calls
console_print("[ ] System call interface\n");
// TODO: Jump directly to QT6 Hello World app
// No shell, no init, no fork/exec
// Just: jump to application entry point
console_print("[ ] Jump to QT6 app\n");
// TODO: Load and run QT6 hello world application directly (no shell/init)
console_print("[ ] Loading QT6 Hello World application...\n");
console_print("\nBooting app...\n");
console_print("\nKernel initialization complete.\n");
console_print("Booting directly into application (no shell)...\n");
// TODO: Replace this with jump to QT6 app
// For now, halt
console_print("ERROR: App not linked yet\n");
// TODO: Jump to QT6 hello world application entry point
// The application will run full-screen until exit
// No shell, no command line - just the one app
// Halt - in real implementation, we'd start the application
while(1) {
__asm__ volatile("hlt");
}
}
/*
* That's the entire kernel. No scheduler. No processes. No filesystem.
* Just boot, initialize hardware, run app.
*
* Total kernel size target: < 100 KB
*/