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| Rev 113 | Rev 115 | ||
|---|---|---|---|
| Line 67... | Line 67... | ||
| 67 | map_page_to_frame(i * PAGE_SIZE, i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba)); |
67 | map_page_to_frame(i * PAGE_SIZE, i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba)); |
| 68 | map_page_to_frame(PA2KA(i * PAGE_SIZE), i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba)); |
68 | map_page_to_frame(PA2KA(i * PAGE_SIZE), i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba)); |
| 69 | } |
69 | } |
| 70 | 70 | ||
| 71 | trap_register(14, page_fault); |
71 | trap_register(14, page_fault); |
| 72 | cpu_write_dba(KA2PA(dba)); |
72 | write_cr3(KA2PA(dba)); |
| 73 | } |
73 | } |
| 74 | else { |
74 | else { |
| 75 | /* |
75 | /* |
| 76 | * Application processors need to create their own view of the |
76 | * Application processors need to create their own view of the |
| 77 | * virtual address space. Because of that, each AP copies |
77 | * virtual address space. Because of that, each AP copies |
| Line 79... | Line 79... | ||
| 79 | * processor and adjusts it to fulfill its needs. |
79 | * processor and adjusts it to fulfill its needs. |
| 80 | */ |
80 | */ |
| 81 | 81 | ||
| 82 | dba = frame_alloc(FRAME_KA | FRAME_PANIC); |
82 | dba = frame_alloc(FRAME_KA | FRAME_PANIC); |
| 83 | memcopy(bootstrap_dba, dba, PAGE_SIZE); |
83 | memcopy(bootstrap_dba, dba, PAGE_SIZE); |
| 84 | cpu_write_dba(KA2PA(dba)); |
84 | write_cr3(KA2PA(dba)); |
| 85 | } |
85 | } |
| 86 | 86 | ||
| 87 | paging_on(); |
87 | paging_on(); |
| 88 | } |
88 | } |
| 89 | 89 | ||
| Line 105... | Line 105... | ||
| 105 | struct page_specifier *pd, *pt; |
105 | struct page_specifier *pd, *pt; |
| 106 | __address dba, newpt; |
106 | __address dba, newpt; |
| 107 | int pde, pte; |
107 | int pde, pte; |
| 108 | 108 | ||
| 109 | if (root) dba = root; |
109 | if (root) dba = root; |
| 110 | else dba = cpu_read_dba(); |
110 | else dba = read_cr3(); |
| 111 | 111 | ||
| 112 | pde = page >> 22; /* page directory entry */ |
112 | pde = page >> 22; /* page directory entry */ |
| 113 | pte = (page >> 12) & 0x3ff; /* page table entry */ |
113 | pte = (page >> 12) & 0x3ff; /* page table entry */ |
| 114 | 114 | ||
| 115 | pd = (struct page_specifier *) PA2KA(dba); |
115 | pd = (struct page_specifier *) PA2KA(dba); |