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| Rev 2131 | Rev 2307 | ||
|---|---|---|---|
| Line 81... | Line 81... | ||
| 81 | 81 | ||
| 82 | void page_arch_init(void) |
82 | void page_arch_init(void) |
| 83 | { |
83 | { |
| 84 | uintptr_t cur; |
84 | uintptr_t cur; |
| 85 | int i; |
85 | int i; |
| 86 | int identity_flags = PAGE_CACHEABLE | PAGE_EXEC | PAGE_GLOBAL; |
86 | int identity_flags = PAGE_CACHEABLE | PAGE_EXEC | PAGE_GLOBAL | PAGE_WRITE; |
| 87 | 87 | ||
| 88 | if (config.cpu_active == 1) { |
88 | if (config.cpu_active == 1) { |
| 89 | page_mapping_operations = &pt_mapping_operations; |
89 | page_mapping_operations = &pt_mapping_operations; |
| 90 | 90 | ||
| 91 | /* |
91 | /* |
| Line 110... | Line 110... | ||
| 110 | page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags); |
110 | page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags); |
| 111 | } |
111 | } |
| 112 | 112 | ||
| 113 | exc_register(14, "page_fault", (iroutine) page_fault); |
113 | exc_register(14, "page_fault", (iroutine) page_fault); |
| 114 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
114 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
| 115 | } |
- | |
| 116 | else { |
115 | } else |
| 117 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
116 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
| 118 | } |
- | |
| 119 | } |
117 | } |
| 120 | 118 | ||
| 121 | 119 | ||
| 122 | /** Identity page mapper |
120 | /** Identity page mapper |
| 123 | * |
121 | * |
| Line 206... | Line 204... | ||
| 206 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
204 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
| 207 | 205 | ||
| 208 | uintptr_t virtaddr = PA2KA(last_frame); |
206 | uintptr_t virtaddr = PA2KA(last_frame); |
| 209 | pfn_t i; |
207 | pfn_t i; |
| 210 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
208 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
| 211 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE); |
209 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE); |
| 212 | 210 | ||
| 213 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
211 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
| 214 | 212 | ||
| 215 | return virtaddr; |
213 | return virtaddr; |
| 216 | } |
214 | } |