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[netwatch.git] / video / text.c

diff --git a/video/text.c b/video/text.c
index d710cee9d5ef6eb5a26e24a75f26262972f40aef..4f26b8ed8ec80098fc5eceb1f83c31a6aedcace5 100644 (file)
--- a/video/text.c
+++ b/video/text.c
@@ -1,3 +1,13 @@
+/* text.c
+ * Text console checksum and rendering functions
+ * NetWatch system management mode administration console
+ *
+ * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
+ * This program is free software; you can redistribute and/or modify it under
+ * the terms found in the file LICENSE in the root of this source tree.
+ *
+ */
+
 #include <io.h>
 #include <text.h>
 #include <paging.h>
@@ -38,6 +48,12 @@ void text_init()
        unsigned char oldread;
 
        smram_state_t old_state = smram_save_state();
+       outb(0x3CE, 0x06 /* Miscellaneous */);
+       outb(0x3CF, 0x0C);
+       outb(0x3C4, 0x04 /* Seq memory mode */);
+       outb(0x3C5, inb(0x3C5) | 0x04);
+       outb(0x3CE, 0x05 /* Mode */);
+       outb(0x3CF, inb(0x3CF) & ~0x10);
        outb(0x3CE, 0x04 /* Read register */);
        oldread = inb(0x3CF);
        outb(0x3CF, 0x02 /* Font plane */);
@@ -47,13 +63,19 @@ void text_init()
        smram_restore_state(old_state);
 
        outb(0x3CF, oldread);
+       outb(0x3CE, 0x06 /* Miscellaneous */);
+       outb(0x3CF, 0x0E);
+       outb(0x3CE, 0x05 /* Mode */);
+       outb(0x3CF, inb(0x3CF) | 0x10);
+       outb(0x3C4, 0x04 /* Seq memory mode */);
+       outb(0x3C5, inb(0x3C5) & ~0x04);
 }
 
 void text_render(char *buf, int x, int y, int w, int h)
 {
        unsigned char *video = (unsigned char *)vga_base();
        unsigned int textx = x / 9;
-       unsigned int texty = y / 14;
+       unsigned int texty = y / 16;
        unsigned int cx, cy;
        unsigned char ch, at, font;
        smram_state_t old_state = smram_save_state();
@@ -64,20 +86,20 @@ void text_render(char *buf, int x, int y, int w, int h)
        for (cy = y; cy < (y + h); cy++)
        {
                cx = x;
-               texty = cy / 14;
+               texty = cy / 16;
                textx = cx / 9;
                ch = video[texty * 160 + textx * 2];
                at = video[texty * 160 + textx * 2 + 1];
-               font = _font[ch * 32 + cy % 14];
+               font = _font[ch * 32 + cy % 16];
                for (cx = x; cx < (x + w); cx++)
                {
-                       unsigned int pos = cx % 9;
+                       unsigned int pos = cx % 8;
                        if (pos == 0)
                        {
-                               textx = cx / 9;
+                               textx = cx / 8;
                                ch = video[texty * 160 + textx * 2];
                                at = video[texty * 160 + textx * 2 + 1];
-                               font = _font[ch * 32 + cy % 14];
+                               font = _font[ch * 32 + cy % 16];
                        }
                        /* XXX always BGR888 */
                        if (pos == 8)   /* 9th pixel is cloned */
@@ -101,8 +123,8 @@ void text_render(char *buf, int x, int y, int w, int h)
 uint32_t text_checksum(int x, int y, int w, int h)
 {
        unsigned char *video = (unsigned char *)vga_base();
-       unsigned int textx = x / 9;
-       unsigned int texty = y / 14;
+       unsigned int textx = x / 8;
+       unsigned int texty = y / 16;
        int cx, cy;
        uint32_t cksm = 0;
        smram_state_t old_state = smram_save_state();
@@ -112,9 +134,9 @@ uint32_t text_checksum(int x, int y, int w, int h)
        for (cy = y; cy < (y + h); cy++)
        {
                cx = x;
-               texty = cy / 14;
-               textx = cx / 9;
-               cksm = crc32(video + texty * 160 + textx * 2, (w / 9) * 2 + 2, cksm);   /* Err on the side of 'too many'. */
+               texty = cy / 16;
+               textx = cx / 8;
+               cksm = crc32(video + texty * 160 + textx * 2, (w / 8) * 2 + 2, cksm);   /* Err on the side of 'too many'. */
        }
        
        smram_restore_state(old_state);