Minor refactor

bootloader/bios/memory.asm

@@ -1,19 +1,19 @@
 ; SRs to find memory size and leave it as a "note" for the kernel
 
-mmap_probe:		; literally just test the memory boundaries
+; mmap_probe:		; literally just test the memory boundaries
-	push eax
+; 	push eax
-	push ebx
+; 	push ebx
-	push edx
+; 	push edx
-	push ebp
+; 	push ebp
-
+; 
-	mov ebp, esi
+; 	mov ebp, esi
-	add esi, 0x00000ff
+; 	add esi, 0x00000ff
-	and esi, ~0x00000ff
+; 	and esi, ~0x00000ff
-mmap_probe_addr:
+; mmap_probe_addr:
-
+; 
-mmap_probe_done:
+; mmap_probe_done:
-
+
-mmap_e820:
+e820:
 	mov di, 0x8004
 	mov ebx, 0	; Must be 0 
 	mov bp, 0	; entry count
@@ -27,15 +27,17 @@ mmap_e820:
 	int 0x15					; Do the interupt
 
 	; carry flag = (un)supported function
-	jc mmap_e820_fail			; Try probing instead
+	jc e820_fail			; Try probing instead
 
 	cmp eax, edx				; eax should be = 'SMAP'
-	jne mmap_e820_fail			; if not then fail
+	jne e820_fail			; if not then fail
+
+	test ebx, ebx				; no entries
+	je e820_fail
+
 
-	test ebx, ebx
-	je mmap_e820_fail
 
-mmap_e820_fail:
+e820_fail:
 	stc
 	ret
 

bootloader/bootloader.asm

@@ -35,12 +35,12 @@
 ; Switching to PM
 [bits 16]
 pm_preinit:
-	call mmap_e820	; Map the physical memory
+	; Do stats before mode switch
+	call e820				; Map the physical memory
 
+	; PM prep stuff
 	cli						; Switch interupts
-
 	lgdt [gdt_descriptor] 	; Tell the CPU about the GDT
-
 	mov eax, cr0			; Set first bit of the CR0 register
 	or eax, 0x1				; to 1
 	mov cr0, eax			; Update the control register