That is almost certainly all the cause of my woe.

[netwatch.git] / video / text.c

diff --git a/video/text.c b/video/text.c
index 7197bad4e38fcdaba4ab92eaa398bf672cb972cf..962af0ca0afc65d7587e11f0970336cc4fd15b7f 100644 (file)
--- 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];
 
@@ -11,25 +13,33 @@ 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: buf %08x, (%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];
@@ -61,19 +71,26 @@ 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();
+       
+       outputf("checksum: (%d,%d),(%d,%d)", 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];
@@ -92,5 +109,9 @@ uint32_t text_checksum(int x, int y, int w, int h)
                }
        }
        
+       smram_restore_state(old_state);
+       
+       outputf("checksum: %08x", cksm);
+       
        return cksm;
 }