Initial commit

src/kernel/main.c

@@ -0,0 +1,79 @@
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include "limine.h"
+#include "graphics.h"
+#include "idt.h"
+#include "ps2.h"
+#include "wm.h"
+#include "io.h"
+#include "memory_manager.h"
+
+// --- Limine Requests ---
+__attribute__((used, section(".requests")))
+static volatile LIMINE_BASE_REVISION(2);
+
+__attribute__((used, section(".requests")))
+static volatile struct limine_framebuffer_request framebuffer_request = {
+    .id = LIMINE_FRAMEBUFFER_REQUEST,
+    .revision = 1
+};
+
+__attribute__((used, section(".requests_start")))
+static volatile struct limine_request *const requests_start_marker[] = {
+    (struct limine_request *)&framebuffer_request,
+    NULL
+};
+
+__attribute__((used, section(".requests_end")))
+static volatile struct limine_request *const requests_end_marker[] = {
+    NULL
+};
+
+static void hcf(void) {
+    asm("cli");
+    for (;;) {
+        asm("hlt");
+    }
+}
+
+// Kernel Entry Point
+void kmain(void) {
+    // 1. Graphics Init
+    if (LIMINE_BASE_REVISION_SUPPORTED == false) {
+        // Warning
+    }
+
+    if (framebuffer_request.response == NULL || framebuffer_request.response->framebuffer_count < 1) {
+        hcf();
+    }
+
+    struct limine_framebuffer *fb = framebuffer_request.response->framebuffers[0];
+    graphics_init(fb);
+
+    // 2. Interrupts Init
+    idt_init();
+    
+    // Register ISRs with correct CS
+    idt_register_interrupts();
+    
+    // Load IDT and Enable Interrupts
+    idt_load();
+
+    // 2.5 Memory Manager Init
+    memory_manager_init();
+
+    // 3. PS/2 Init (Mouse/Keyboard)
+    asm("cli");
+    ps2_init();
+    asm("sti");
+
+    // 4. Window Manager Init (Draws initial desktop)
+    wm_init();
+
+    // 5. Main loop - just wait for interrupts
+    // Timer interrupt will drive the redraw system
+    while (1) {
+        asm("hlt");
+    }
+}