Subversion Repositories HelenOS-historic

Rev

Rev 23 | Rev 120 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 23 Rev 116
Line 26... Line 26...
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
 27 
 */
28 
 
 28 
 
29 
#include <mm/page.h>
 29 
#include <mm/page.h>
30 
#include <arch/mm/page.h>
 30 
#include <arch/mm/page.h>
- 
 
 31 
#include <arch/types.h>
- 
 
 32 
#include <typedefs.h>
31 
 
 33 
 
32 
void page_init(void)
 34 
void page_init(void)
33 
{  
 35 
{  
34 
    page_arch_init();
 36 
    page_arch_init();
35 
    map_page_to_frame(0x0, 0x0, PAGE_NOT_PRESENT, 0);
 37 
    map_page_to_frame(0x0, 0x0, PAGE_NOT_PRESENT, 0);
36 
}
 38 
}
- 
 
 39 
 
- 
 
 40 
/** Map memory structure
- 
 
 41 
 *
- 
 
 42 
 * Identity-map memory structure
- 
 
 43 
 * considering possible crossings
- 
 
 44 
 * of page boundaries.
- 
 
 45 
 *
- 
 
 46 
 * @param s Address of the structure.
- 
 
 47 
 * @param size Size of the structure.
- 
 
 48 
 */
- 
 
 49 
void map_structure(__address s, size_t size)
- 
 
 50 
{
- 
 
 51 
    int i, cnt, length;
- 
 
 52 
 
- 
 
 53 
    /* TODO: implement portable way of computing page address from address */
- 
 
 54 
        length = size + (s - (s & 0xfffff000));
- 
 
 55 
        cnt = length/PAGE_SIZE + (length%PAGE_SIZE>0);
- 
 
 56 
 
- 
 
 57 
        for (i = 0; i < cnt; i++)
- 
 
 58 
                map_page_to_frame(s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE, 0);
- 
 
 59 
 
- 
 
 60 
}