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| Rev 793 | Rev 825 | ||
|---|---|---|---|
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| 43 | #include <interrupt.h> |
43 | #include <interrupt.h> |
| 44 | 44 | ||
| 45 | void page_arch_init(void) |
45 | void page_arch_init(void) |
| 46 | { |
46 | { |
| 47 | __address cur; |
47 | __address cur; |
| - | 48 | int flags; |
|
| 48 | 49 | ||
| 49 | if (config.cpu_active == 1) { |
50 | if (config.cpu_active == 1) { |
| 50 | page_mapping_operations = &pt_mapping_operations; |
51 | page_mapping_operations = &pt_mapping_operations; |
| 51 | 52 | ||
| 52 | /* |
53 | /* |
| 53 | * PA2KA(identity) mapping for all frames until last_frame. |
54 | * PA2KA(identity) mapping for all frames until last_frame. |
| 54 | */ |
55 | */ |
| 55 | for (cur = 0; cur < last_frame; cur += FRAME_SIZE) |
56 | for (cur = 0; cur < last_frame; cur += FRAME_SIZE) { |
| - | 57 | flags = PAGE_CACHEABLE; |
|
| - | 58 | if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size)) |
|
| - | 59 | flags |= PAGE_GLOBAL; |
|
| 56 | page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, PAGE_CACHEABLE); |
60 | page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
| - | 61 | } |
|
| 57 | 62 | ||
| 58 | exc_register(14, "page_fault", page_fault); |
63 | exc_register(14, "page_fault", page_fault); |
| 59 | write_cr3((__address) AS_KERNEL->page_table); |
64 | write_cr3((__address) AS_KERNEL->page_table); |
| 60 | } |
65 | } |
| 61 | else { |
66 | else { |