#include <agnix/agnix.h>#include <agnix/init.h>#include <agnix/memory.h>#include <asm/paging.h>#include <asm/cpu_ops.h>#include <agnix/console.h>Include dependency graph for pgmap.c:
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Defines | |
| #define | DEBUG_MEM 0 |
| #define | MOD_NAME "MEM: " |
Functions | |
| pte_s * | pte_ptr (struct pde_s *pde) |
| int | remap_page_tables (u32 pd_addr, u32 from, u32 to, u32 len) |
| int | remap_kpage_tables (u32 from, u32 to, u32 len) |
| int | page_tables_init (struct main_memory_s *mem) |
Variables | |
| main_memory_s | main_memory |
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Definition at line 53 of file pgmap.c. References MOD_NAME, printk(), and pte_ptr(). Referenced by bootmem_init_dh(). 00054 {
00055 struct pde_s *pde;
00056 struct pte_s *pte;
00057 u32 page_start;
00058 u32 page_end;
00059 u32 page_len;
00060 u32 page_count;
00061 int i, j;
00062
00063 #if DEBUG_MEM
00064 printk(MOD_NAME "Initializing page tables\n");
00065 #endif
00066
00067 page_count = 0;
00068 page_start = 0;
00069 page_end = (mem->mem_size) >> 2; // KB >> 2 == pages
00070 page_len = page_end - page_start;
00071
00072 pde = (struct pde_s *)mem->pdbr;
00073 pde += pde_offset(PAGE_OFFSET);
00074
00075 #if DEBUG_MEM
00076 printk(MOD_NAME "page count = %d\n", page_len);
00077 #endif
00078
00079 __cli();
00080
00081 // write_cr4(read_cr4() | 0x10);
00082
00083 for (i = pde_offset(PAGE_OFFSET); i < PDE_PER_PD; i++) {
00084
00085 // pde->pte_addr = (page_count << PAGE_SHIFT);
00086 // set_pde(pde, make_pde_phys(pde->pte_addr, PDE_FLAG_P | PDE_FLAG_RW | PDE_FLAG_PS));
00087 // pde++;
00088 // page_count += 1024;
00089 //
00090 pte = pte_ptr(pde);
00091 for (j = 0; j < PTE_PER_PT; j++) {
00092
00093 set_pte(pte, make_pte_phys(page_count << PAGE_SHIFT, (PTE_FLAG_P | PTE_FLAG_RW | PTE_FLAG_A | PTE_FLAG_D)));
00094
00095 if (++page_count >= page_len)
00096 break;
00097
00098 pte++;
00099 }
00100
00101 if (page_count >= page_len)
00102 break;
00103
00104 pde++;
00105 }
00106
00107
00108 #if DEBUG_MEM
00109 printk(MOD_NAME "Loading cr3 (phys_addr=%x) ... ", virt_to_phys(mem->pdbr));
00110 #endif
00111
00112 load_cr3(mem->pdbr);
00113
00114 #if DEBUG_MEM
00115 printk("ok\n");
00116 #endif
00117
00118 return 0;
00119 }
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Definition at line 26 of file pgmap.c. References get_free_pages(). Referenced by page_tables_init(). 00027 {
00028 struct pte_s *pte;
00029
00030 if (!pte_address(pde)) {
00031 pte = (struct pte_s *)get_free_pages(0);
00032 pde->pte_addr = virt_to_phys((u32)pte);
00033 set_pde(pde, make_pde_phys(pde->pte_addr, PDE_FLAG_P | PDE_FLAG_RW));
00034 } else {
00035 pte = phys_to_virt(pte_address(pde));
00036 }
00037
00038 return pte;
00039 }
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Definition at line 48 of file pgmap.c. References main_memory, and remap_page_tables(). 00049 {
00050 return remap_page_tables(main_memory.pdbr, from, to, len);
00051 }
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Definition at line 41 of file pgmap.c. Referenced by remap_kpage_tables(). 00042 {
00043
00044
00045 return 0;
00046 }
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