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2009-02-05 Vesa Jääskeläinen <chaac@nic.fi>

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Fixes problem when running vbetest command as reported by 
	Vladimir Serbinenko <phcoder@gmail.com>.

	* (grub_vbe_set_video_mode): Fixed problem with text modes.
This commit is contained in:
chaac 2009-02-05 18:28:58 +00:00
parent 3143cc1c5f
commit 38a0f8e7b5
2 changed files with 45 additions and 25 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2009-02-05 Vesa Jääskeläinen <chaac@nic.fi>
Fixes problem when running vbetest command as reported by
Vladimir Serbinenko <phcoder@gmail.com>.
* (grub_vbe_set_video_mode): Fixed problem with text modes.
2009-02-04 Felix Zielcke <fzielcke@z-51.de>
util/getroot.c (grub_util_get_grub_dev): Add support for /dev/mdNpN and

63
video/i386/pc/vbe.c
View file

@ -206,36 +206,49 @@ grub_vbe_set_video_mode (grub_uint32_t mode,
framebuffer.bytes_per_scan_line = active_mode_info.bytes_per_scan_line;
}
/* Calculate bytes_per_pixel value. */
switch(active_mode_info.bits_per_pixel)
/* Check whether mode is text mode or graphics mode. */
if (active_mode_info.memory_model == GRUB_VBE_MEMORY_MODEL_TEXT)
{
case 32: framebuffer.bytes_per_pixel = 4; break;
case 24: framebuffer.bytes_per_pixel = 3; break;
case 16: framebuffer.bytes_per_pixel = 2; break;
case 15: framebuffer.bytes_per_pixel = 2; break;
case 8: framebuffer.bytes_per_pixel = 1; break;
default:
grub_vbe_bios_set_mode (old_mode, 0);
return grub_error (GRUB_ERR_BAD_DEVICE,
"cannot set VBE mode %x",
mode);
break;
/* Text mode. */
/* No special action needed for text mode as it is not supported for
graphical support. */
}
/* If video mode is in indexed color, setup default VGA palette. */
if (framebuffer.index_color_mode)
else
{
struct grub_vbe_palette_data *palette
= (struct grub_vbe_palette_data *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
/* Graphics mode. */
/* Make sure that the BIOS can reach the palette. */
grub_memcpy (palette, vga_colors, sizeof (vga_colors));
status = grub_vbe_bios_set_palette_data (sizeof (vga_colors)
/ sizeof (struct grub_vbe_palette_data),
0,
palette);
/* Calculate bytes_per_pixel value. */
switch(active_mode_info.bits_per_pixel)
{
case 32: framebuffer.bytes_per_pixel = 4; break;
case 24: framebuffer.bytes_per_pixel = 3; break;
case 16: framebuffer.bytes_per_pixel = 2; break;
case 15: framebuffer.bytes_per_pixel = 2; break;
case 8: framebuffer.bytes_per_pixel = 1; break;
default:
grub_vbe_bios_set_mode (old_mode, 0);
return grub_error (GRUB_ERR_BAD_DEVICE,
"cannot set VBE mode %x",
mode);
break;
}
/* Just ignore the status. */
/* If video mode is in indexed color, setup default VGA palette. */
if (framebuffer.index_color_mode)
{
struct grub_vbe_palette_data *palette
= (struct grub_vbe_palette_data *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
/* Make sure that the BIOS can reach the palette. */
grub_memcpy (palette, vga_colors, sizeof (vga_colors));
status = grub_vbe_bios_set_palette_data (sizeof (vga_colors)
/ sizeof (struct grub_vbe_palette_data),
0,
palette);
/* Just ignore the status. */
}
}
/* Copy mode info for caller. */