From dee639968b8e4c6c1806c0246d893606fcfcde87 Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Sat, 4 Feb 2023 19:18:25 +0000
Subject: [PATCH] x86_64: remove vga functions from start_32 and start_64

---
 arch/x86_64/start_32.S |  5 ----
 arch/x86_64/start_64.S | 61 ------------------------------------------
 2 files changed, 66 deletions(-)

diff --git a/arch/x86_64/start_32.S b/arch/x86_64/start_32.S
index 49a02f3..aafd37a 100644
--- a/arch/x86_64/start_32.S
+++ b/arch/x86_64/start_32.S
@@ -283,11 +283,6 @@ _start:
 	cpuid
 	btl $3, %edx
 
-	mov $0xb8000, %eax
-	movb $76, (%eax)
-	inc %eax
-	movb $0xF, (%eax)
-
 	call init_page_tables
 	call long_mode_switch		# calls start_64, does not return
 
diff --git a/arch/x86_64/start_64.S b/arch/x86_64/start_64.S
index 87adb24..ed6a365 100644
--- a/arch/x86_64/start_64.S
+++ b/arch/x86_64/start_64.S
@@ -4,71 +4,10 @@
 
 .section .boot.rodata, "a", @progbits
 
-/*******
-  ERROR MESSAGE STRINGS
- *******/
-kernel_identifier:
-    .asciz "    Socks kernel version " BUILD_ID "    "
-
-
-.section .boot.text, "ax", @progbits
-
-vga_clear:
-	mov $0xb8000, %rdi		# VGA buffer
-	mov $1000, %rcx			# 4,000 bytes to clear = 2,000 words
-	mov $0x0700, %rax
-
-	rep stosw
-
-	ret
-
-# prints a block message showing the kernel name and version number
-# starting at cell 2x1 on the VGA display
-print_kernel_identifier:
-	/* line 1: empty padding line */
-	mov $kernel_identifier, %rsi
-	mov $0xb80a4, %rdi
-
-1:
-	movw $0x7000, (%rdi)		# black text on white background.
-	add $0x02, %rdi
-	inc %rsi
-	cmpb $0, (%rsi)
-	jne 1b
-
-	/* line 2: kernel identiifer */
-	mov $kernel_identifier, %rsi
-	mov $0xb8144, %rdi
-
-2:
-	movsb
-	movb $0x70, (%rdi)		# black text on white background
-	inc %rdi
-	cmpb $0, (%rsi)
-	jne 2b
-
-
-	/* line 3: empty padding line */
-	mov $kernel_identifier, %rsi
-	mov $0xb81e4, %rdi
-
-3:
-	movw $0x7000, (%rdi)		# black text on white background.
-	add $0x02, %rdi
-	inc %rsi
-	cmpb $0, (%rsi)
-	jne 3b
-	ret
-
-
 .global start_64
 .type start_64, @function
 start_64:
-	call vga_clear
-
 	pop %rax
-	call print_kernel_identifier
-
 	call kernel_init
 
 	cli