0,0 → 1,121 |
/* |
* Copyright (c) 2006 Jakub Vana |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup ia32 |
* @{ |
*/ |
/** |
* @file |
* @brief VESA frame buffer driver. |
*/ |
|
#ifdef CONFIG_FB |
|
#include <genarch/fb/fb.h> |
#include <genarch/fb/visuals.h> |
#include <arch/drivers/vesa.h> |
#include <putchar.h> |
#include <mm/page.h> |
#include <mm/frame.h> |
#include <mm/as.h> |
#include <arch/mm/page.h> |
#include <synch/spinlock.h> |
#include <arch/asm.h> |
#include <arch/types.h> |
#include <memstr.h> |
#include <bitops.h> |
|
uint32_t vesa_ph_addr; |
uint16_t vesa_width; |
uint16_t vesa_height; |
uint16_t vesa_bpp; |
uint16_t vesa_scanline; |
|
uint8_t vesa_red_mask; |
uint8_t vesa_red_pos; |
|
uint8_t vesa_green_mask; |
uint8_t vesa_green_pos; |
|
uint8_t vesa_blue_mask; |
uint8_t vesa_blue_pos; |
|
int vesa_present(void) |
{ |
if ((vesa_width != 0xffff) && (vesa_height != 0xffff)) |
return true; |
|
return false; |
} |
|
void vesa_init(void) |
{ |
unsigned int visual; |
|
switch (vesa_bpp) { |
case 8: |
visual = VISUAL_INDIRECT_8; |
break; |
case 16: |
if ((vesa_red_mask == 5) && (vesa_red_pos == 10) |
&& (vesa_green_mask == 5) && (vesa_green_pos == 5) |
&& (vesa_blue_mask == 5) && (vesa_blue_pos == 0)) |
visual = VISUAL_RGB_5_5_5_LE; |
else |
visual = VISUAL_RGB_5_6_5_LE; |
break; |
case 24: |
visual = VISUAL_BGR_8_8_8; |
break; |
case 32: |
visual = VISUAL_BGR_8_8_8_0; |
break; |
default: |
panic("Unsupported bits per pixel."); |
} |
|
fb_properties_t vesa_props = { |
.addr = vesa_ph_addr, |
.offset = 0, |
.x = vesa_width, |
.y = vesa_height, |
.scan = vesa_scanline, |
.visual = visual, |
}; |
fb_init(&vesa_props); |
} |
|
void vesa_redraw(void) |
{ |
fb_redraw(); |
} |
|
#endif |
|
/** @} |
*/ |