1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/arch/x86/multiboot.cpp b/kernel/arch/x86/multiboot.cpp
new file mode 100644
index 0000000..9f3eedb
--- /dev/null
+++ b/kernel/arch/x86/multiboot.cpp
@@ -0,0 +1,30 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "multiboot.h"
+#include <arch/i386/tmtty.h>
+
+// gets the memory map and stuff
+extern "C" void multiboot_main(multiboot_info_t* mbd, uint32_t magic) {
+    terminal_initialize();
+    //printf("multiboot struc addr: %x\n", mbd);
+    if (magic != MULTIBOOT_BOOTLOADER_MAGIC) {
+        printf("Invalid multiboot magic number\n");
+        abort();
+    }
+
+    // checks bit 6 to see if there's a valid memory map
+    if (!(mbd->flags >> 6 & 0x1)) {
+        printf("Invalid GRUB memory map\n");
+        abort();
+    }
+
+    // loop through memory map and display the values
+    for (int i = 0; i < mbd->mmap_length; i += sizeof(multiboot_memory_map_t)) {
+        multiboot_memory_map_t* mmmt = (multiboot_memory_map_t*)(mbd->mmap_addr + i);
+
+        printf("Start Addr: 0x%lx | Length: 0x%lx | Size: 0x%x | Type: %d\n", 
+        mmmt->addr, mmmt->len, mmmt->size, mmmt->type);
+        //printf("%lx,%x,%x,%d\n", mmmt->size, mmmt->size, mmmt->size, mmmt->size);
+    }
+}
+\ No newline at end of file