Rev 2131 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 2131 | Rev 2307 | ||
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Line 59... | Line 59... | ||
59 | 59 | ||
60 | /* |
60 | /* |
61 | * PA2KA(identity) mapping for all frames until last_frame. |
61 | * PA2KA(identity) mapping for all frames until last_frame. |
62 | */ |
62 | */ |
63 | for (cur = 0; cur < last_frame; cur += FRAME_SIZE) { |
63 | for (cur = 0; cur < last_frame; cur += FRAME_SIZE) { |
64 | flags = PAGE_CACHEABLE; |
64 | flags = PAGE_CACHEABLE | PAGE_WRITE; |
65 | if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size)) |
65 | if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size)) |
66 | flags |= PAGE_GLOBAL; |
66 | flags |= PAGE_GLOBAL; |
67 | page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
67 | page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
68 | } |
68 | } |
69 | 69 | ||
70 | exc_register(14, "page_fault", (iroutine) page_fault); |
70 | exc_register(14, "page_fault", (iroutine) page_fault); |
71 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
71 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
72 | } |
- | |
73 | else { |
72 | } else |
74 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
73 | write_cr3((uintptr_t) AS_KERNEL->genarch.page_table); |
75 | } |
- | |
76 | 74 | ||
77 | paging_on(); |
75 | paging_on(); |
78 | } |
76 | } |
79 | 77 | ||
80 | 78 | ||
Line 84... | Line 82... | ||
84 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
82 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
85 | 83 | ||
86 | uintptr_t virtaddr = PA2KA(last_frame); |
84 | uintptr_t virtaddr = PA2KA(last_frame); |
87 | pfn_t i; |
85 | pfn_t i; |
88 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
86 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
89 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE); |
87 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE); |
90 | 88 | ||
91 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
89 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
92 | 90 | ||
93 | return virtaddr; |
91 | return virtaddr; |
94 | } |
92 | } |