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Rev | Author | Line No. | Line |
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750 | victor | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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983 | diamond | 3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
750 | victor | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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593 | mikedld | 7 | |
465 | serge | 8 | $Revision: 2142 $ |
9 | |||
593 | mikedld | 10 | |
465 | serge | 11 | MEM_WB equ 6 ;write-back memory |
12 | MEM_WC equ 1 ;write combined memory |
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13 | MEM_UC equ 0 ;uncached memory |
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14 | |||
15 | align 4 |
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16 | proc mem_test |
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1103 | diamond | 17 | ; if we have BIOS with fn E820, skip the test |
18 | cmp dword [BOOT_VAR-OS_BASE + 0x9100], 0 |
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19 | jnz .ret |
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465 | serge | 20 | |
21 | mov eax, cr0 |
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22 | and eax, not (CR0_CD+CR0_NW) |
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23 | or eax, CR0_CD ;disable caching |
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24 | mov cr0, eax |
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25 | wbinvd ;invalidate cache |
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26 | |||
27 | xor edi, edi |
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28 | mov ebx, 'TEST' |
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29 | @@: |
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30 | add edi, 0x100000 |
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31 | xchg ebx, dword [edi] |
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32 | cmp dword [edi], 'TEST' |
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33 | xchg ebx, dword [edi] |
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34 | je @b |
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35 | |||
36 | and eax, not (CR0_CD+CR0_NW) ;enable caching |
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37 | mov cr0, eax |
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1103 | diamond | 38 | inc dword [BOOT_VAR-OS_BASE + 0x9100] |
39 | xor eax, eax |
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40 | mov [BOOT_VAR-OS_BASE + 0x9104], eax |
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41 | mov [BOOT_VAR-OS_BASE + 0x9108], eax |
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42 | mov [BOOT_VAR-OS_BASE + 0x910C], edi |
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43 | mov [BOOT_VAR-OS_BASE + 0x9110], eax |
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44 | .ret: |
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465 | serge | 45 | ret |
46 | endp |
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47 | |||
48 | align 4 |
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49 | proc init_mem |
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1103 | diamond | 50 | ; calculate maximum allocatable address and number of allocatable pages |
51 | mov edi, BOOT_VAR-OS_BASE + 0x9104 |
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52 | mov ecx, [edi-4] |
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53 | xor esi, esi ; esi will hold total amount of memory |
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54 | xor edx, edx ; edx will hold maximum allocatable address |
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55 | .calcmax: |
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56 | ; round all to pages |
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57 | mov eax, [edi] |
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58 | test eax, 0xFFF |
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59 | jz @f |
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60 | neg eax |
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61 | and eax, 0xFFF |
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62 | add [edi], eax |
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63 | adc dword [edi+4], 0 |
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64 | sub [edi+8], eax |
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65 | sbb dword [edi+12], 0 |
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66 | jc .unusable |
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67 | @@: |
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68 | and dword [edi+8], not 0xFFF |
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69 | jz .unusable |
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70 | ; ignore memory after 4 Gb |
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71 | cmp dword [edi+4], 0 |
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72 | jnz .unusable |
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73 | mov eax, [edi] |
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74 | cmp dword [edi+12], 0 |
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75 | jnz .overflow |
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76 | add eax, [edi+8] |
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77 | jnc @f |
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78 | .overflow: |
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79 | mov eax, 0xFFFFF000 |
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80 | @@: |
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81 | cmp edx, eax |
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82 | jae @f |
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83 | mov edx, eax |
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84 | @@: |
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85 | sub eax, [edi] |
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86 | mov [edi+8], eax |
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87 | add esi, eax |
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88 | jmp .usable |
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89 | .unusable: |
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90 | and dword [edi+8], 0 |
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91 | .usable: |
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92 | add edi, 20 |
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93 | loop .calcmax |
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94 | .calculated: |
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95 | mov [MEM_AMOUNT-OS_BASE], esi |
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96 | mov [pg_data.mem_amount-OS_BASE], esi |
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97 | shr esi, 12 |
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98 | mov [pg_data.pages_count-OS_BASE], esi |
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465 | serge | 99 | |
1103 | diamond | 100 | shr edx, 12 |
101 | add edx, 31 |
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102 | and edx, not 31 |
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103 | shr edx, 3 |
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104 | mov [pg_data.pagemap_size-OS_BASE], edx |
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465 | serge | 105 | |
1103 | diamond | 106 | add edx, (sys_pgmap-OS_BASE)+4095 |
107 | and edx, not 4095 |
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108 | mov [tmp_page_tabs], edx |
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513 | serge | 109 | |
1130 | diamond | 110 | mov edx, esi |
1131 | diamond | 111 | and edx, -1024 |
1130 | diamond | 112 | cmp edx, (OS_BASE/4096) |
113 | jbe @F |
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114 | mov edx, (OS_BASE/4096) |
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115 | jmp .set |
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116 | @@: |
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1332 | diamond | 117 | cmp edx, (HEAP_BASE-OS_BASE+HEAP_MIN_SIZE)/4096 |
1130 | diamond | 118 | jae .set |
1332 | diamond | 119 | mov edx, (HEAP_BASE-OS_BASE+HEAP_MIN_SIZE)/4096 |
1130 | diamond | 120 | .set: |
465 | serge | 121 | mov [pg_data.kernel_pages-OS_BASE], edx |
122 | shr edx, 10 |
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123 | mov [pg_data.kernel_tables-OS_BASE], edx |
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124 | |||
125 | xor eax, eax |
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126 | mov edi, sys_pgdir-OS_BASE |
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127 | mov ecx, 4096/4 |
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128 | cld |
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129 | rep stosd |
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130 | |||
131 | mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20) |
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1455 | art_zh | 132 | bt [cpu_caps-OS_BASE], CAPS_PSE |
133 | jnc .no_PSE |
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465 | serge | 134 | |
135 | mov ebx, cr4 |
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136 | or ebx, CR4_PSE |
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137 | mov eax, PG_LARGE+PG_SW |
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138 | mov cr4, ebx |
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513 | serge | 139 | dec [pg_data.kernel_tables-OS_BASE] |
465 | serge | 140 | |
141 | mov [edx], eax |
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142 | add edx, 4 |
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143 | |||
1451 | art_zh | 144 | mov edi, [tmp_page_tabs] |
1455 | art_zh | 145 | jmp .map_kernel_heap ; new kernel fits to the first 4Mb - nothing to do with ".map_low" |
146 | .no_PSE: |
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147 | mov eax, PG_SW |
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148 | mov ecx, [tmp_page_tabs] |
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149 | shr ecx, 12 |
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150 | .map_low: |
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151 | mov edi, [tmp_page_tabs] |
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152 | @@: ; |
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153 | stosd |
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154 | add eax, 0x1000 |
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155 | dec ecx |
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156 | jnz @B |
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157 | |||
158 | .map_kernel_heap: |
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465 | serge | 159 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
160 | shl ecx, 10 |
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161 | xor eax, eax |
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162 | rep stosd |
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163 | |||
164 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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513 | serge | 165 | mov eax, [tmp_page_tabs] |
1451 | art_zh | 166 | or eax, PG_SW |
465 | serge | 167 | mov edi, edx |
1455 | art_zh | 168 | |
465 | serge | 169 | .map_kernel_tabs: |
170 | stosd |
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171 | add eax, 0x1000 |
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172 | dec ecx |
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173 | jnz .map_kernel_tabs |
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174 | |||
175 | mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE |
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176 | |||
177 | mov edi, (sys_pgdir-OS_BASE) |
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178 | lea esi, [edi+(OS_BASE shr 20)] |
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519 | serge | 179 | movsd |
180 | movsd |
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465 | serge | 181 | ret |
182 | endp |
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183 | |||
184 | align 4 |
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185 | proc init_page_map |
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1103 | diamond | 186 | ; mark all memory as unavailable |
465 | serge | 187 | mov edi, sys_pgmap-OS_BASE |
188 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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189 | shr ecx, 2 |
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1103 | diamond | 190 | xor eax, eax |
513 | serge | 191 | cld |
465 | serge | 192 | rep stosd |
193 | |||
1103 | diamond | 194 | ; scan through memory map and mark free areas as available |
195 | mov ebx, BOOT_VAR-OS_BASE + 0x9104 |
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196 | mov edx, [ebx-4] |
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197 | .scanmap: |
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198 | mov ecx, [ebx+8] |
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199 | shr ecx, 12 ; ecx = number of pages |
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200 | jz .next |
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201 | mov edi, [ebx] |
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202 | shr edi, 12 ; edi = first page |
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203 | mov eax, edi |
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204 | shr edi, 5 |
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1331 | diamond | 205 | shl edi, 2 |
1103 | diamond | 206 | add edi, sys_pgmap-OS_BASE |
207 | and eax, 31 |
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208 | jz .startok |
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1331 | diamond | 209 | add ecx, eax |
210 | sub ecx, 32 |
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1103 | diamond | 211 | jbe .onedword |
212 | push ecx |
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213 | mov ecx, eax |
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1331 | diamond | 214 | or eax, -1 |
1103 | diamond | 215 | shl eax, cl |
216 | or [edi], eax |
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217 | add edi, 4 |
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218 | pop ecx |
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219 | .startok: |
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220 | push ecx |
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221 | shr ecx, 5 |
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222 | or eax, -1 |
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223 | rep stosd |
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224 | pop ecx |
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225 | and ecx, 31 |
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1331 | diamond | 226 | neg eax |
1103 | diamond | 227 | shl eax, cl |
1331 | diamond | 228 | dec eax |
1103 | diamond | 229 | or [edi], eax |
230 | jmp .next |
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231 | .onedword: |
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1331 | diamond | 232 | add ecx, 32 |
233 | sub ecx, eax |
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1103 | diamond | 234 | @@: |
235 | bts [edi], eax |
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1331 | diamond | 236 | inc eax |
1103 | diamond | 237 | loop @b |
238 | .next: |
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239 | add ebx, 20 |
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240 | dec edx |
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241 | jnz .scanmap |
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242 | |||
243 | ; mark kernel memory as allocated (unavailable) |
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1455 | art_zh | 244 | mov ecx, [tmp_page_tabs] |
465 | serge | 245 | mov edx, [pg_data.pages_count-OS_BASE] |
1455 | art_zh | 246 | shr ecx, 12 |
247 | add ecx, [pg_data.kernel_tables-OS_BASE] |
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465 | serge | 248 | sub edx, ecx |
249 | mov [pg_data.pages_free-OS_BASE], edx |
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250 | |||
513 | serge | 251 | mov edi, sys_pgmap-OS_BASE |
465 | serge | 252 | mov ebx, ecx |
253 | shr ecx, 5 |
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513 | serge | 254 | xor eax, eax |
465 | serge | 255 | rep stosd |
256 | |||
257 | not eax |
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258 | mov ecx, ebx |
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259 | and ecx, 31 |
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260 | shl eax, cl |
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1103 | diamond | 261 | and [edi], eax |
465 | serge | 262 | add edi, OS_BASE |
263 | mov [page_start-OS_BASE], edi; |
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264 | |||
265 | mov ebx, sys_pgmap |
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266 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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267 | mov [page_end-OS_BASE], ebx |
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268 | |||
269 | ret |
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270 | endp |
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271 | |||
272 | align 4 |
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586 | serge | 273 | |
274 | init_BIOS32: |
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275 | mov edi, 0xE0000 |
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276 | .pcibios_nxt: |
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277 | cmp dword[edi], '_32_' ; "magic" word |
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278 | je .BIOS32_found |
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279 | .pcibios_nxt2: |
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280 | add edi, 0x10 |
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281 | cmp edi, 0xFFFF0 |
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282 | je .BIOS32_not_found |
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283 | jmp .pcibios_nxt |
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284 | .BIOS32_found: ; magic word found, check control summ |
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285 | |||
286 | movzx ecx, byte[edi + 9] |
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287 | shl ecx, 4 |
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288 | mov esi, edi |
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289 | xor eax, eax |
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290 | cld ; paranoia |
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291 | @@: lodsb |
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292 | add ah, al |
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293 | loop @b |
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294 | jnz .pcibios_nxt2 ; control summ must be zero |
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295 | ; BIOS32 service found ! |
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296 | mov ebp, [edi + 4] |
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297 | mov [bios32_entry], ebp |
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298 | ; check PCI BIOS present |
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299 | mov eax, '$PCI' |
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300 | xor ebx, ebx |
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301 | push cs ; special for 'ret far' from BIOS |
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302 | call ebp |
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303 | test al, al |
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304 | jnz .PCI_BIOS32_not_found |
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305 | |||
306 | ; здесь создаются дискрипторы для PCI BIOS |
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307 | |||
308 | add ebx, OS_BASE |
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309 | dec ecx |
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310 | mov [(pci_code_32-OS_BASE)], cx ;limit 0-15 |
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311 | mov [(pci_data_32-OS_BASE)], cx ;limit 0-15 |
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312 | |||
313 | mov [(pci_code_32-OS_BASE)+2], bx ;base 0-15 |
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314 | mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15 |
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315 | |||
316 | shr ebx, 16 |
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317 | mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23 |
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318 | mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23 |
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319 | |||
320 | shr ecx, 16 |
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321 | and cl, 0x0F |
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322 | mov ch, bh |
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323 | add cx, D32 |
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324 | mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 & |
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325 | mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31 |
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326 | |||
327 | mov [(pci_bios_entry-OS_BASE)], edx |
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328 | ; jmp .end |
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329 | .PCI_BIOS32_not_found: |
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330 | ; здесь должна заполнятся pci_emu_dat |
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331 | .BIOS32_not_found: |
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332 | .end: |
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756 | Ghost | 333 | ret |
586 | serge | 334 | |
335 | align 4 |
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465 | serge | 336 | proc test_cpu |
337 | locals |
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338 | cpu_type dd ? |
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339 | cpu_id dd ? |
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340 | cpu_Intel dd ? |
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341 | cpu_AMD dd ? |
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342 | endl |
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343 | |||
344 | xor eax, eax |
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942 | Lrz | 345 | mov [cpu_type], eax |
465 | serge | 346 | mov [cpu_caps-OS_BASE], eax |
347 | mov [cpu_caps+4-OS_BASE], eax |
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348 | |||
349 | pushfd |
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350 | pop eax |
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351 | mov ecx, eax |
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352 | xor eax, 0x40000 |
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353 | push eax |
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354 | popfd |
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355 | pushfd |
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356 | pop eax |
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357 | xor eax, ecx |
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358 | mov [cpu_type], CPU_386 |
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359 | jz .end_cpuid |
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360 | push ecx |
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361 | popfd |
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362 | |||
363 | mov [cpu_type], CPU_486 |
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364 | mov eax, ecx |
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365 | xor eax, 0x200000 |
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366 | push eax |
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367 | popfd |
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368 | pushfd |
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369 | pop eax |
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370 | xor eax, ecx |
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371 | je .end_cpuid |
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372 | mov [cpu_id], 1 |
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373 | |||
374 | xor eax, eax |
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375 | cpuid |
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376 | |||
377 | mov [cpu_vendor-OS_BASE], ebx |
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378 | mov [cpu_vendor+4-OS_BASE], edx |
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379 | mov [cpu_vendor+8-OS_BASE], ecx |
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380 | cmp ebx, dword [intel_str-OS_BASE] |
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381 | jne .check_AMD |
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382 | cmp edx, dword [intel_str+4-OS_BASE] |
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383 | jne .check_AMD |
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384 | cmp ecx, dword [intel_str+8-OS_BASE] |
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385 | jne .check_AMD |
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386 | mov [cpu_Intel], 1 |
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387 | cmp eax, 1 |
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388 | jl .end_cpuid |
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389 | mov eax, 1 |
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390 | cpuid |
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391 | mov [cpu_sign-OS_BASE], eax |
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392 | mov [cpu_info-OS_BASE], ebx |
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393 | mov [cpu_caps-OS_BASE], edx |
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394 | mov [cpu_caps+4-OS_BASE],ecx |
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395 | |||
396 | shr eax, 8 |
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397 | and eax, 0x0f |
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398 | ret |
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399 | .end_cpuid: |
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400 | mov eax, [cpu_type] |
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401 | ret |
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402 | |||
403 | .check_AMD: |
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404 | cmp ebx, dword [AMD_str-OS_BASE] |
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405 | jne .unknown |
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406 | cmp edx, dword [AMD_str+4-OS_BASE] |
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407 | jne .unknown |
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408 | cmp ecx, dword [AMD_str+8-OS_BASE] |
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409 | jne .unknown |
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410 | mov [cpu_AMD], 1 |
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411 | cmp eax, 1 |
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412 | jl .unknown |
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413 | mov eax, 1 |
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414 | cpuid |
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415 | mov [cpu_sign-OS_BASE], eax |
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416 | mov [cpu_info-OS_BASE], ebx |
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417 | mov [cpu_caps-OS_BASE], edx |
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418 | mov [cpu_caps+4-OS_BASE],ecx |
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419 | shr eax, 8 |
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420 | and eax, 0x0f |
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421 | ret |
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422 | .unknown: |
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423 | mov eax, 1 |
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424 | cpuid |
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425 | mov [cpu_sign-OS_BASE], eax |
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426 | mov [cpu_info-OS_BASE], ebx |
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427 | mov [cpu_caps-OS_BASE], edx |
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428 | mov [cpu_caps+4-OS_BASE],ecx |
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429 | shr eax, 8 |
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430 | and eax, 0x0f |
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431 | ret |
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432 | endp |
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433 |