0,0 → 1,87 |
/* |
* 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. |
*/ |
|
#ifdef CONFIG_FB |
|
#include <genarch/fb/fb.h> |
#include <arch/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 <typedefs.h> |
#include <memstr.h> |
#include <bitops.h> |
#include <sysinfo/sysinfo.h> |
|
__u32 vesa_ph_addr; |
__u16 vesa_width; |
__u16 vesa_height; |
__u16 vesa_bpp; |
__u16 vesa_scanline; |
|
int vesa_present(void) |
{ |
if (vesa_width != 0xffff) |
return true; |
if (vesa_height != 0xffff) |
return true; |
return false; |
} |
|
static count_t vesa_frame_order(void) |
{ |
__u32 x = vesa_scanline*vesa_height; |
if (x <= FRAME_SIZE) |
return 0; |
|
return (fnzb32(x - 1) + 1) - FRAME_WIDTH; |
} |
|
void vesa_init(void) |
{ |
int a; |
__address vram_lin_addr; |
|
vram_lin_addr = PA2KA(PFN2ADDR(frame_alloc(vesa_frame_order(), FRAME_KA))); |
/* Map videoram */ |
for (a = 0; a < ((vesa_scanline * vesa_height + PAGE_SIZE - 1) >> PAGE_WIDTH); a++) |
page_mapping_insert(AS_KERNEL, vram_lin_addr + a*PAGE_SIZE, vesa_ph_addr + a*FRAME_SIZE, |
PAGE_NOT_CACHEABLE); |
|
fb_init(vram_lin_addr, vesa_width, vesa_height, vesa_bpp, vesa_scanline); |
|
fb_register(); |
sysinfo_set_item_val("fb.address.physical", NULL, vesa_ph_addr); |
} |
|
#endif |