Initializing own stack and moar multiboot stuff

- Not relying on Grub/Multiboot setting up stack for us
- Preparing Multiboot headers so one day we can has graphical mode

start32.asm

@@ -1,17 +1,27 @@
-	format elf
-	use32
+format elf
+use32
 
 MULTIBOOT_PAGE_ALIGN	    equ (1 shl 0)
 MULTIBOOT_MEMORY_INFO	    equ (1 shl 1)
+MULTIBOOT_VIDEO_REQUEST		equ (0 shl 2)
 MULTIBOOT_AOUT_KLUDGE	    equ (1 shl 16)
 MULTIBOOT_HEADER_MAGIC	    equ 0x1BADB002
-MULTIBOOT_HEADER_FLAGS	    equ MULTIBOOT_PAGE_ALIGN or MULTIBOOT_MEMORY_INFO
+MULTIBOOT_HEADER_FLAGS	    equ MULTIBOOT_PAGE_ALIGN or MULTIBOOT_MEMORY_INFO or MULTIBOOT_VIDEO_REQUEST
 MULTIBOOT_CHECKSUM          equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
 
 .multiboot: align 4
 	dd MULTIBOOT_HEADER_MAGIC
 	dd MULTIBOOT_HEADER_FLAGS
 	dd MULTIBOOT_CHECKSUM
+; 	dd 0	; header address
+; 	dd 0	; load address
+; 	dd 0	; load end address
+; 	dd 0	; bss end address
+; 	dd 0	; entry address
+; 	dd 0	; video mode_type (0:fb, 1:txt) (set flags[2]!)
+; 	dd 1024			; video width
+; 	dd 768			; video height
+; 	dd 32			; video depth
 
 section '.bss' writable align 16
 	stack_bottom:
@@ -26,15 +36,15 @@ disable_cursor:
 	pushf
 	push eax
 	push edx
-  
+
 	mov dx, 0x3D4
 	mov al, 0xA	; low cursor shape register
 	out dx, al
-  
+
 	inc dx
 	mov al, 0x20	; bits 6-7 unused, bit 5 disables the cursor, bits 0-4 control the cursor shape
 	out dx, al
-  
+
 	pop edx
 	pop eax
 	popf
@@ -42,14 +52,13 @@ disable_cursor:
 
 _start:
 	; Setup stack
-	;mov esp, stack_top
+	mov esp, stack_top
 
 	; Call the main kernel function.
 	call disable_cursor
 	call kmain
 
 
-
 @@:
 	cli
 	hlt