new OS

kernel/kmain.c

@@ -0,0 +1,53 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include "io.h"
+#include "serial.h"
+#include "terminal.h"
+#include "idt.h"
+#include "paging.h"
+#include "memmap.h"
+
+#define LPT1 0x378
+
+void lpt_write(char c) {
+    while ((inb(LPT1 + 1) & 0x80) == 0); // Wait for ready
+    outb(LPT1, c);
+}
+
+void kmain(void) {
+    terminal_initialize();
+    terminal_write("Welcome to ClassicOS\n");
+
+    serial_init();
+    serial_write("Serial port initialized.\n");
+
+    lpt_write('L'); // Send 'L' to LPT1 to test
+
+    terminal_write("Initializing IDT...\n");
+    idt_init();
+    serial_write("IDT initialized.\n");
+
+    terminal_write("Enabling paging...\n");
+    paging_init();
+    serial_write("Paging initialized.\n");
+
+    terminal_write("Getting memory map...\n");
+    memory_map_entry_t mmap[32];
+    uint32_t mmap_size = get_memory_map(mmap, 32);
+    serial_write("Memory map retrieved.\n");
+
+    terminal_write("Memory Regions:\n");
+    for (uint32_t i = 0; i < mmap_size; i++) {
+        terminal_write(" - Region: ");
+        // You would format and print base/length/type here
+        // (e.g., with a basic itoa and print_hex helper)
+        serial_write("Memory region entry\n");
+    }
+
+    terminal_write("System initialized. Halting.\n");
+
+    // Halt CPU in loop
+    while (1) {
+        asm volatile("hlt");
+    }
+}