Rev 1287 | Rev 1292 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1287 | Rev 1289 | ||
---|---|---|---|
Line 30... | Line 30... | ||
30 | 30 | ||
31 | #include <genarch/fb/fb.h> |
31 | #include <genarch/fb/fb.h> |
32 | #include <arch/vesa.h> |
32 | #include <arch/vesa.h> |
33 | #include <putchar.h> |
33 | #include <putchar.h> |
34 | #include <mm/page.h> |
34 | #include <mm/page.h> |
- | 35 | #include <mm/frame.h> |
|
35 | #include <mm/as.h> |
36 | #include <mm/as.h> |
36 | #include <arch/mm/page.h> |
37 | #include <arch/mm/page.h> |
37 | #include <synch/spinlock.h> |
38 | #include <synch/spinlock.h> |
38 | #include <arch/types.h> |
39 | #include <arch/types.h> |
39 | #include <arch/asm.h> |
40 | #include <arch/asm.h> |
Line 52... | Line 53... | ||
52 | if(vesa_height!=0xffff) return true; |
53 | if(vesa_height!=0xffff) return true; |
53 | return false; |
54 | return false; |
54 | } |
55 | } |
55 | 56 | ||
56 | 57 | ||
- | 58 | static __u32 log2(__u32 x) |
|
- | 59 | { |
|
- | 60 | __u32 l=2; |
|
- | 61 | if(x<=PAGE_SIZE) return PAGE_WIDTH+1; |
|
- | 62 | ||
- | 63 | x--; |
|
- | 64 | while(x>>=1) l++; |
|
- | 65 | return l; |
|
- | 66 | } |
|
- | 67 | ||
57 | void vesa_init(void) |
68 | void vesa_init(void) |
58 | { |
69 | { |
59 | int a; |
70 | int a; |
60 | 71 | ||
- | 72 | __address videoram_lin_addr; |
|
- | 73 | ||
- | 74 | videoram_lin_addr=PA2KA(PFN2ADDR(frame_alloc( log2(vesa_scanline*vesa_height) -FRAME_WIDTH,FRAME_KA))); |
|
61 | /* Map videoram */ |
75 | /* Map videoram */ |
62 | for(a=0;a<((vesa_scanline*vesa_height+PAGE_SIZE-1)>>PAGE_WIDTH);a++) |
76 | for(a=0;a<((vesa_scanline*vesa_height+PAGE_SIZE-1)>>PAGE_WIDTH);a++) |
63 | page_mapping_insert(AS_KERNEL, VIDEORAM_LIN_ADDR+a*4096, vesa_ph_addr+a*4096, PAGE_NOT_CACHEABLE); |
77 | page_mapping_insert(AS_KERNEL, videoram_lin_addr+a*4096, vesa_ph_addr+a*4096, PAGE_NOT_CACHEABLE); |
64 | 78 | ||
65 | fb_init( VIDEORAM_LIN_ADDR,vesa_width,vesa_height,vesa_bpp,vesa_scanline); |
79 | fb_init( videoram_lin_addr,vesa_width,vesa_height,vesa_bpp,vesa_scanline); |
66 | putchar('\n'); |
80 | putchar('\n'); |
67 | } |
81 | } |
68 | 82 | ||
69 | #endif |
83 | #endif |
70 | 84 |