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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/arch/ia32/src/drivers/vesa.c @ 1288

  → /kernel/trunk/arch/ia32/src/drivers/vesa.c @ 1289

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1288 → Rev 1289

/kernel/trunk/arch/ia32/src/drivers/vesa.c
32,6 → 32,7
#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>
54,15 → 55,28
}
static __u32 log2(__u32 x)
{
__u32 l=2;
if(x<=PAGE_SIZE) return PAGE_WIDTH+1;
x--;
while(x>>=1) l++;
return l;
}
void vesa_init(void)
{
int a;
__address videoram_lin_addr;
videoram_lin_addr=PA2KA(PFN2ADDR(frame_alloc( log2(vesa_scanline*vesa_height) -FRAME_WIDTH,FRAME_KA)));
/* Map videoram */
for(a=0;a<((vesa_scanline*vesa_height+PAGE_SIZE-1)>>PAGE_WIDTH);a++)
page_mapping_insert(AS_KERNEL, VIDEORAM_LIN_ADDR+a*4096, vesa_ph_addr+a*4096, PAGE_NOT_CACHEABLE);
page_mapping_insert(AS_KERNEL, videoram_lin_addr+a*4096, vesa_ph_addr+a*4096, PAGE_NOT_CACHEABLE);
fb_init( VIDEORAM_LIN_ADDR,vesa_width,vesa_height,vesa_bpp,vesa_scanline);
fb_init( videoram_lin_addr,vesa_width,vesa_height,vesa_bpp,vesa_scanline);
putchar('\n');
}