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. 不再支持 vga 图形模式。
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yaya committed Aug 20, 2015
1 parent 88ca23c commit 0259a72
Showing 1 changed file with 39 additions and 18 deletions.
57 changes: 39 additions & 18 deletions stage2/graphics.c
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@@ -1,4 +1,4 @@
/* graphics.c - graphics mode support for GRUB */
/* graphics.c - graphics mode support for GRUB */
/* Implemented as a terminal type by Jeremy Katz <katzj@redhat.com> based
* on a patch by Paulo César Pereira de Andrade <pcpa@conectiva.com.br>
*/
Expand Down Expand Up @@ -39,6 +39,7 @@ extern unsigned long graphics_inited;
char splashimage[128];

#define VSHADOW VSHADOW1
#if 0
/* 8x16 dot array, total chars = 80*30. plano size = 80*30*16 = 38400 bytes */
/* 8x16 dot array, total chars = 100*37. plano size = 800*600/8 = 60000 bytes */
static unsigned char *VSHADOW1 = (unsigned char *)0x3A0000; //unsigned char VSHADOW1[60000];
Expand All @@ -49,7 +50,7 @@ static unsigned char *VSHADOW8 = (unsigned char *)0x3CBF20; //unsigned char VSHA
* scroll and the like */
//static unsigned short text[80 * 30];
static unsigned long *text = (unsigned long *)0x3FC000; // length in bytes = 100*37*4 = 0x39D0

#endif
//extern unsigned long splashimage_loaded;

/* constants to define the viewable area */
Expand Down Expand Up @@ -83,7 +84,7 @@ static void graphics_scroll (void);
void SetPixel (unsigned long x, unsigned long y, unsigned long color);
void XorPixel (unsigned long x, unsigned long y, unsigned long color);
static int read_image (void);
static void graphics_cursor (int set);
//static void graphics_cursor (int set);
static void vbe_cursor (int set);
void rectangle(int left, int top, int length, int width, int line);
extern void (*graphics_CURSOR) (int set);
Expand All @@ -93,7 +94,7 @@ static inline void outb(unsigned short port, unsigned char val)
{
__asm __volatile ("outb %0,%1"::"a" (val), "d" (port));
}

#if 0
static void MapMask(int value) {
outb(0x3c4, 2);
outb(0x3c5, value);
Expand All @@ -104,7 +105,7 @@ static void BitMask(int value) {
outb(0x3ce, 8);
outb(0x3cf, value);
}

#endif
extern void memmove_forward_SSE (void *dst, const void *src, unsigned int len);

#if 0
Expand Down Expand Up @@ -266,7 +267,7 @@ static inline void * _memcpy_forward(void *dst, const void *src, unsigned int le
}
#endif
#endif

#if 0
static inline void _memset(void *dst, unsigned char data, unsigned int len)
{
int r0,r1,r2,r3;
Expand All @@ -280,7 +281,7 @@ static inline void _memset(void *dst, unsigned char data, unsigned int len)
:"0"(len),"1"(dst),"2"(data)
:"memory");
}

#endif
void SetPixel (unsigned long x, unsigned long y, unsigned long color)
{
unsigned char *lfb;
Expand Down Expand Up @@ -333,8 +334,8 @@ void XorPixel (unsigned long x, unsigned long y, unsigned long color)
int
graphics_init (void)
{
if (! graphics_CURSOR)
graphics_CURSOR = (void *)&graphics_cursor;
// if (! graphics_CURSOR)
// graphics_CURSOR = (void *)&graphics_cursor;

if (! graphics_inited)
{
Expand Down Expand Up @@ -371,6 +372,7 @@ graphics_init (void)
//graphics_inited = 1;
//return 1;
}
#if 0
else
{
unsigned long tmp_mode;
Expand Down Expand Up @@ -437,6 +439,14 @@ graphics_init (void)
plano_size = (800 * 600) / 8;
}
}
#endif
success:
current_term->chars_per_line = x1 = 100;
current_term->max_lines = y1 = 37;
xpixels = 800;
ypixels = 600;
plano_size = (800 * 600) / 8;

menu_border.disp_ul = 0x14;
menu_border.disp_ur = 0x15;
menu_border.disp_ll = 0x16;
Expand Down Expand Up @@ -688,7 +698,8 @@ graphics_putchar (unsigned int ch, unsigned int max_width)
{ fontx = 0; check_scroll (); }

if (graphics_mode <= 0xFF)
goto vga;
// goto vga;
return 0;

/* VBE */

Expand Down Expand Up @@ -798,7 +809,7 @@ graphics_putchar (unsigned int ch, unsigned int max_width)
return print_unicode (max_width);

//////////////////////////////////////////////////////////////////////////////

#if 0
vga:
if ((char)ch == '\n')
{
Expand Down Expand Up @@ -831,6 +842,7 @@ graphics_putchar (unsigned int ch, unsigned int max_width)
graphics_CURSOR(1);
}
return 1;
#endif
}

/* get the current location of the cursor */
Expand All @@ -856,14 +868,16 @@ graphics_gotoxy (int x, int y)
void
graphics_cls (void)
{
int i;
unsigned char *mem, *s1, *s2, *s4, *s8;
// int i;
// unsigned char *mem, *s1, *s2, *s4, *s8;
unsigned char *mem,*s1;

fontx = 0;
fonty = 0;

if (graphics_mode <= 0xFF)
goto vga;
// goto vga;
return;

/* VBE */
#if 0
Expand Down Expand Up @@ -904,7 +918,7 @@ graphics_cls (void)
if (cursor_state & 1)
graphics_CURSOR(1);
return;

#if 0
vga:
mem = (unsigned char*)VIDEOMEM;

Expand Down Expand Up @@ -953,7 +967,7 @@ graphics_cls (void)
memmove_forward_SSE (mem, s8, plano_size);

MapMask(15);
#endif
}

static int read_image_bmp(int type)
Expand Down Expand Up @@ -1847,7 +1861,7 @@ read_image_jpg(int type)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////



#if 0
/* Read in the splashscreen image and set the palette up appropriately.
* Format of splashscreen is an xpm (can be gzipped) with 16 colors and
* 640x480. */
Expand Down Expand Up @@ -1996,6 +2010,7 @@ read_image_xpm (int type)

return 1;
}
#endif
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
unsigned long rr, gg, bb;
unsigned long pixel_shift(unsigned long color)
Expand Down Expand Up @@ -2039,6 +2054,8 @@ static int read_image()
*splashimage = 1;
if (graphics_mode < 0xFF)
{
return 0;
#if 0
unsigned char *s1;
unsigned char *s2;
unsigned char *s4;
Expand All @@ -2052,6 +2069,7 @@ static int read_image()
((long *)s1)[i] = ((long *)s2)[i] = ((long *)s4)[i] = ((long *)s8)[i] = 0;
graphics_set_palette( 0, background);
graphics_set_palette(15, foreground);
#endif
}
return 1;
}
Expand All @@ -2066,10 +2084,12 @@ static int read_image()
{
splashimage_loaded |= read_image_bmp(graphics_mode > 0xFF);
}
#if 0
else if (grub_memcmp(buf, "/* XPM */\n", 10) == 0) /* XPM */
{
splashimage_loaded |= read_image_xpm(graphics_mode > 0xFF);
}
#endif
else if (*(unsigned short*)buf == 0xD8FF)
{
splashimage_loaded |= read_image_jpg(graphics_mode > 0xFF);
Expand Down Expand Up @@ -2211,6 +2231,7 @@ vbe_cursor (int set)
#endif
}

#if 0
static unsigned char chr[16 << 2];
static unsigned char mask[16];

Expand Down Expand Up @@ -2315,5 +2336,5 @@ graphics_cursor (int set)

MapMask(15);
}

#endif
#endif /* SUPPORT_GRAPHICS */

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