Prepare for enabling protected mode

Clean up all testing/playground code to prepare the bootloader to enable
protected mode.

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 1 insertions, 41 deletions

diff --git a/bootloader.asm b/bootloader.asm
index 40bf2b6..bf3afb4 100644
--- a/bootloader.asm
+++ b/bootloader.asm
@@ -27,40 +27,10 @@ step2:
 			; Intel implements a full descending stack
 	sti		; Enable interrupts
 
-
-	mov si, load_msg
-	call print
-
-	; Load sector from disk
-
-	mov ah, 2	; Read sector into memory
-	mov al, 1	; Read 1 sector
-
-	mov ch, 0	; Cylinder number
-	mov cl, 2	; Sector number to start reading from
-
-	mov dh, 0	; Head number
-	;DL		; Drive number (Already set by bios)
-
-	; Sector will be loaded at ES:BX. We already have ES set,
-	; just set the BX to an address after the end of the bootloader. This
-	; avoids the risk of corrupting any data from our bootloader.
-	mov bx, kbuf_sector
-	int 0x13
-
-	; Jump if CF is set
-	jc kload_failure	; On I/O error, CF is set
-
-	; Kernel loaded succesfully (hopefully)
-	mov si, kbuf_sector
-	call print
 	jmp $
 
-kload_failure:
-	mov si, err_msg
-	call print
-	jmp $
 
+; Message Print routines
 print:
 	mov bx, 0
 .loop
@@ -77,16 +47,6 @@ print_char:
 	int	0x10
 	ret
 
-
-; Static data
-	load_msg: db 'Starting bootloader...', 0x0A, 0x0D, 0
-	divzero_msg: db 'Interrupts working properly...', 0x0A, 0x0D, 0
-	err_msg: db 'Failed to load kernel...', 0x0A, 0x0D, 0
-
 ; Fill in to the end and add bootloader signature
 	times 510 - ($ - $$) db 0
 	dw 0xAA55
-
-; This just labels an address after the bootloader. Just makes it easier
-; to refer to the loaded sector from int 0x13.
-kbuf_sector: