X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/66cd7e8220e0f7dbb0e43f44f6aab60194548ad0..c1cc31ac5cc581f2142c15794ef7c6cfaa3ec6d9:/video/text.c

diff --git a/video/text.c b/video/text.c
index 7197bad..a25c8aa 100644
--- a/video/text.c
+++ b/video/text.c
@@ -3,6 +3,8 @@
 #include <paging.h>
 #include <minilib.h>
 #include <stdint.h>
+#include <output.h>
+#include <smram.h>
 
 static unsigned char _font[256 * 32];
 
@@ -11,29 +13,37 @@ static unsigned char _font[256 * 32];
 void text_init()
 {
 	unsigned char oldread;
+	smram_state_t old_state = smram_save_state();
 	outb(0x3CE, 0x05 /* Mode register */);
 	outb(0x3CF, inb(0x3CF) & ~(0x10 /* Odd/even */));
 	outb(0x3CE, 0x04 /* Read register */);
 	oldread = inb(0x3CF);
 	outb(0x3CF, 0x02 /* Font plane */);
+	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
 	memcpy(_font, p2v(0xB8000), sizeof(_font));
+	smram_restore_state(old_state);
 	outb(0x3CF, oldread);
 }
 
 void text_render(char *buf, int x, int y, int w, int h)
 {
-	unsigned char *video = p2v(0xB8000);
+	unsigned char *video = (unsigned char *)0xB8000;
 	unsigned int textx = x / 9;
 	unsigned int texty = y / 14;
 	unsigned int cx, cy;
 	unsigned char ch, at, font;
+	smram_state_t old_state = smram_save_state();
 	
+	outputf("text_render: (%d,%d),(%d,%d)", buf, x, y, w, h);
+	
+	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
 	for (cy = y; cy < (y + h); cy++)
 	{
+		cx = x;
 		texty = cy / 14;
 		textx = cx / 9;
-		ch = video[texty * 50 + textx * 2];
-		at = video[texty * 50 + textx * 2 + 1];
+		ch = video[texty * 160 + textx * 2];
+		at = video[texty * 160 + textx * 2 + 1];
 		font = _font[ch * 32 + cy % 14];
 		for (cx = x; cx < (x + w); cx++)
 		{
@@ -41,8 +51,8 @@ void text_render(char *buf, int x, int y, int w, int h)
 			if (pos == 0)
 			{
 				textx = cx / 9;
-				ch = video[texty * 50 + textx * 2];
-				at = video[texty * 50 + textx * 2 + 1];
+				ch = video[texty * 160 + textx * 2];
+				at = video[texty * 160 + textx * 2 + 1];
 				font = _font[ch * 32 + cy % 14];
 			}
 			/* XXX always BGR888 */
@@ -61,36 +71,30 @@ void text_render(char *buf, int x, int y, int w, int h)
 			*(buf++) = 0;
 		}
 	}
+	smram_restore_state(old_state);
 }
 
 uint32_t text_checksum(int x, int y, int w, int h)
 {
-	unsigned char *video = p2v(0xB8000);
+	unsigned char *video = (unsigned char *)0xB8000;
 	unsigned int textx = x / 9;
 	unsigned int texty = y / 14;
 	int cx, cy;
 	unsigned char ch, at;
 	uint32_t cksm = 0;
+	smram_state_t old_state = smram_save_state();
+	
+	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
 	
 	for (cy = y; cy < (y + h); cy++)
 	{
+		cx = x;
 		texty = cy / 14;
 		textx = cx / 9;
-		ch = video[texty * 50 + textx * 2];
-		at = video[texty * 50 + textx * 2 + 1];
-		for (cx = x; cx < (x + w); cx++)
-		{
-			unsigned int pos = cx % 9;
-			if (pos == 0)
-			{
-				textx = cx / 9;
-				ch = video[texty * 50 + textx * 2];
-				at = video[texty * 50 + textx * 2 + 1];
-			}
-			
-			cksm += ch + (at << 16);
-		}
+		cksm ^= crc32(video + texty * 160 + textx * 2, (w / 9 + 1) * 2);	/* Err on the side of 'too many'. */
 	}
 	
+	smram_restore_state(old_state);
+	
 	return cksm;
 }