# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1495991329 -7200
# Node ID 8486ec92869e722b0df07751b8f3a0d73a30e69d
# Parent  ea2ae1af65d5962444d4b03cb687912bb8e57026
Moved the framebuffer copying routine into a separate function.

diff -r ea2ae1af65d5 -r 8486ec92869e display.c
--- a/display.c	Sun May 28 19:03:58 2017 +0200
+++ b/display.c	Sun May 28 19:08:49 2017 +0200
@@ -21,6 +21,22 @@
 #include "mips.h"
 #include "vga.h"
 
+void init_framebuffer(uint32_t *data)
+{
+	uint32_t *addr = (uint32_t *) KSEG1_BASE;
+	uint16_t x, y;
+
+	for (y = 0; y < LINE_COUNT; y++)
+	{
+		for (x = 0; x < LINE_LENGTH; x += 4)
+		{
+			*addr = *data;
+			addr++;
+			data++;
+		}
+	}
+}
+
 void init_framebuffer_with_pattern()
 {
 	uint32_t *addr = (uint32_t *) KSEG1_BASE;
diff -r ea2ae1af65d5 -r 8486ec92869e vga.S
--- a/vga.S	Sun May 28 19:03:58 2017 +0200
+++ b/vga.S	Sun May 28 19:08:49 2017 +0200
@@ -54,6 +54,7 @@
 
 .text
 .globl _start
+.extern init_framebuffer
 .extern init_framebuffer_with_pattern
 
 _start:
@@ -114,7 +115,8 @@
 
 	/* Initialise framebuffer. */
 
-	jal init_framebuffer_with_pattern
+	la $a0, screendata
+	jal init_framebuffer
 	nop
 
 	sync
@@ -556,27 +558,6 @@
 
 
 
-/* Framebuffer initialisation. */
-
-init_framebuffer:
-	li $v0, KSEG1_BASE
-	la $v1, screendata
-	li $t8, SCREEN_SIZE
-
-_init_fb_loop:
-	lw $t9, 0($v1)
-	sw $t9, 0($v0)
-	addiu $v0, $v0, 4
-	addiu $v1, $v1, 4
-	addiu $t8, $t8, -4
-	bnez $t8, _init_fb_loop
-	nop
-
-	jr $ra
-	nop
-
-
-
 /* Utilities. */
 
 handle_error_level: