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Rev | Author | Line No. | Line |
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465 | serge | 1 | $Revision: 586 $ |
2 | |||
3 | MEM_WB equ 6 ;write-back memory |
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4 | MEM_WC equ 1 ;write combined memory |
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5 | MEM_UC equ 0 ;uncached memory |
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6 | |||
7 | align 4 |
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8 | proc mem_test |
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9 | |||
10 | mov eax, cr0 |
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11 | and eax, not (CR0_CD+CR0_NW) |
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12 | or eax, CR0_CD ;disable caching |
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13 | mov cr0, eax |
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14 | wbinvd ;invalidate cache |
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15 | |||
16 | xor edi, edi |
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17 | mov ebx, 'TEST' |
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18 | @@: |
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19 | add edi, 0x100000 |
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20 | xchg ebx, dword [edi] |
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21 | cmp dword [edi], 'TEST' |
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22 | xchg ebx, dword [edi] |
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23 | je @b |
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24 | mov [MEM_AMOUNT-OS_BASE], edi |
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25 | |||
26 | and eax, not (CR0_CD+CR0_NW) ;enable caching |
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27 | mov cr0, eax |
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28 | mov eax, edi |
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29 | ret |
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30 | endp |
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31 | |||
32 | align 4 |
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33 | proc init_mem |
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34 | mov eax, [MEM_AMOUNT-OS_BASE] |
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35 | mov [pg_data.mem_amount-OS_BASE], eax |
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36 | |||
37 | shr eax, 12 |
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38 | mov edx, eax |
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39 | mov [pg_data.pages_count-OS_BASE], eax |
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40 | shr eax, 3 |
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41 | mov [pg_data.pagemap_size-OS_BASE], eax |
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42 | |||
513 | serge | 43 | add eax, (sys_pgmap-OS_BASE)+4095 |
44 | and eax, not 4095 |
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45 | mov [tmp_page_tabs], eax |
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46 | |||
465 | serge | 47 | cmp edx, (OS_BASE/4096) |
48 | jbe @F |
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49 | mov edx, (OS_BASE/4096) |
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50 | jmp .set |
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51 | @@: |
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52 | cmp edx, (HEAP_MIN_SIZE/4096) |
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53 | jae .set |
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54 | mov edx, (HEAP_MIN_SIZE/4096) |
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55 | .set: |
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56 | mov [pg_data.kernel_pages-OS_BASE], edx |
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57 | shr edx, 10 |
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58 | mov [pg_data.kernel_tables-OS_BASE], edx |
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59 | |||
60 | xor eax, eax |
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61 | mov edi, sys_pgdir-OS_BASE |
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62 | mov ecx, 4096/4 |
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63 | cld |
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64 | rep stosd |
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65 | |||
66 | mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20) |
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67 | bt [cpu_caps-OS_BASE], CAPS_PSE |
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68 | jnc .no_PSE |
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69 | |||
70 | mov ebx, cr4 |
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71 | or ebx, CR4_PSE |
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72 | mov eax, PG_LARGE+PG_SW |
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73 | mov cr4, ebx |
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513 | serge | 74 | dec [pg_data.kernel_tables-OS_BASE] |
465 | serge | 75 | |
76 | mov [edx], eax |
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77 | add eax, 0x00400000 |
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78 | add edx, 4 |
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79 | |||
80 | mov eax, 0x400000+PG_SW |
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513 | serge | 81 | mov ecx, [tmp_page_tabs] |
82 | sub ecx, 0x400000 |
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83 | shr ecx, 12 ;ecx/=4096 |
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465 | serge | 84 | jmp .map_low |
85 | .no_PSE: |
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86 | mov eax, PG_SW |
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513 | serge | 87 | mov ecx, [tmp_page_tabs] |
88 | shr ecx, 12 |
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465 | serge | 89 | .map_low: |
513 | serge | 90 | mov edi, [tmp_page_tabs] |
465 | serge | 91 | @@: ; |
92 | stosd |
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93 | add eax, 0x1000 |
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94 | dec ecx |
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95 | jnz @B |
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96 | |||
97 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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98 | shl ecx, 10 |
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99 | xor eax, eax |
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100 | rep stosd |
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101 | |||
102 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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513 | serge | 103 | mov eax, [tmp_page_tabs] |
104 | or eax, PG_SW |
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465 | serge | 105 | mov edi, edx |
106 | |||
107 | .map_kernel_tabs: |
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108 | |||
109 | stosd |
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110 | add eax, 0x1000 |
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111 | dec ecx |
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112 | jnz .map_kernel_tabs |
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113 | |||
114 | mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE |
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115 | |||
116 | mov edi, (sys_pgdir-OS_BASE) |
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117 | lea esi, [edi+(OS_BASE shr 20)] |
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519 | serge | 118 | movsd |
119 | movsd |
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465 | serge | 120 | ret |
121 | endp |
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122 | |||
123 | align 4 |
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124 | proc init_page_map |
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125 | |||
126 | mov edi, sys_pgmap-OS_BASE |
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127 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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128 | shr ecx, 2 |
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513 | serge | 129 | or eax, -1 |
130 | cld |
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465 | serge | 131 | rep stosd |
132 | |||
513 | serge | 133 | mov ecx, [tmp_page_tabs] |
465 | serge | 134 | mov edx, [pg_data.pages_count-OS_BASE] |
513 | serge | 135 | shr ecx, 12 |
136 | add ecx, [pg_data.kernel_tables-OS_BASE] |
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465 | serge | 137 | sub edx, ecx |
138 | mov [pg_data.pages_free-OS_BASE], edx |
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139 | |||
513 | serge | 140 | mov edi, sys_pgmap-OS_BASE |
465 | serge | 141 | mov ebx, ecx |
142 | shr ecx, 5 |
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513 | serge | 143 | xor eax, eax |
465 | serge | 144 | rep stosd |
145 | |||
146 | not eax |
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147 | mov ecx, ebx |
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148 | and ecx, 31 |
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149 | shl eax, cl |
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150 | mov [edi], eax |
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151 | add edi, OS_BASE |
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152 | mov [page_start-OS_BASE], edi; |
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153 | |||
154 | mov ebx, sys_pgmap |
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155 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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156 | mov [page_end-OS_BASE], ebx |
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157 | |||
158 | mov [pg_data.pg_mutex-OS_BASE], 0 |
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159 | ret |
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160 | endp |
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161 | |||
162 | align 4 |
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586 | serge | 163 | |
164 | init_BIOS32: |
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165 | mov edi, 0xE0000 |
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166 | .pcibios_nxt: |
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167 | cmp dword[edi], '_32_' ; "magic" word |
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168 | je .BIOS32_found |
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169 | .pcibios_nxt2: |
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170 | add edi, 0x10 |
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171 | cmp edi, 0xFFFF0 |
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172 | je .BIOS32_not_found |
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173 | jmp .pcibios_nxt |
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174 | .BIOS32_found: ; magic word found, check control summ |
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175 | |||
176 | movzx ecx, byte[edi + 9] |
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177 | shl ecx, 4 |
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178 | mov esi, edi |
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179 | xor eax, eax |
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180 | cld ; paranoia |
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181 | @@: lodsb |
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182 | add ah, al |
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183 | loop @b |
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184 | jnz .pcibios_nxt2 ; control summ must be zero |
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185 | ; BIOS32 service found ! |
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186 | mov ebp, [edi + 4] |
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187 | mov [bios32_entry], ebp |
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188 | ; check PCI BIOS present |
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189 | mov eax, '$PCI' |
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190 | xor ebx, ebx |
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191 | push cs ; special for 'ret far' from BIOS |
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192 | call ebp |
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193 | test al, al |
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194 | jnz .PCI_BIOS32_not_found |
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195 | |||
196 | ; здесь создаются дискрипторы для PCI BIOS |
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197 | |||
198 | add ebx, OS_BASE |
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199 | dec ecx |
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200 | mov [(pci_code_32-OS_BASE)], cx ;limit 0-15 |
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201 | mov [(pci_data_32-OS_BASE)], cx ;limit 0-15 |
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202 | |||
203 | mov [(pci_code_32-OS_BASE)+2], bx ;base 0-15 |
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204 | mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15 |
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205 | |||
206 | shr ebx, 16 |
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207 | mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23 |
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208 | mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23 |
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209 | |||
210 | shr ecx, 16 |
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211 | and cl, 0x0F |
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212 | mov ch, bh |
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213 | add cx, D32 |
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214 | mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 & |
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215 | mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31 |
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216 | |||
217 | mov [(pci_bios_entry-OS_BASE)], edx |
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218 | ; jmp .end |
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219 | .PCI_BIOS32_not_found: |
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220 | ; здесь должна заполнятся pci_emu_dat |
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221 | .BIOS32_not_found: |
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222 | .end: |
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223 | |||
224 | |||
225 | align 4 |
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465 | serge | 226 | proc test_cpu |
227 | locals |
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228 | cpu_type dd ? |
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229 | cpu_id dd ? |
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230 | cpu_Intel dd ? |
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231 | cpu_AMD dd ? |
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232 | endl |
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233 | |||
234 | mov [cpu_type], 0 |
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235 | xor eax, eax |
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236 | mov [cpu_caps-OS_BASE], eax |
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237 | mov [cpu_caps+4-OS_BASE], eax |
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238 | |||
239 | pushfd |
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240 | pop eax |
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241 | mov ecx, eax |
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242 | xor eax, 0x40000 |
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243 | push eax |
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244 | popfd |
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245 | pushfd |
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246 | pop eax |
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247 | xor eax, ecx |
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248 | mov [cpu_type], CPU_386 |
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249 | jz .end_cpuid |
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250 | push ecx |
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251 |