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Rev | Author | Line No. | Line |
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465 | serge | 1 | $Revision: 513 $ |
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 | |||
74 | bt [cpu_caps-OS_BASE], CAPS_PGE |
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75 | jnc @F |
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76 | |||
77 | or eax, PG_GLOBAL |
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78 | or ebx, CR4_PGE |
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79 | @@: |
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80 | mov cr4, ebx |
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513 | serge | 81 | dec [pg_data.kernel_tables-OS_BASE] |
465 | serge | 82 | |
83 | mov [edx], eax |
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84 | add eax, 0x00400000 |
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85 | add edx, 4 |
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86 | |||
87 | mov eax, 0x400000+PG_SW |
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513 | serge | 88 | mov ecx, [tmp_page_tabs] |
89 | sub ecx, 0x400000 |
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90 | shr ecx, 12 ;ecx/=4096 |
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465 | serge | 91 | jmp .map_low |
92 | .no_PSE: |
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93 | mov eax, PG_SW |
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513 | serge | 94 | mov ecx, [tmp_page_tabs] |
95 | shr ecx, 12 |
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465 | serge | 96 | .map_low: |
513 | serge | 97 | mov edi, [tmp_page_tabs] |
465 | serge | 98 | @@: ; |
99 | stosd |
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100 | add eax, 0x1000 |
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101 | dec ecx |
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102 | jnz @B |
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103 | |||
104 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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105 | shl ecx, 10 |
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106 | xor eax, eax |
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107 | rep stosd |
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108 | |||
109 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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513 | serge | 110 | mov eax, [tmp_page_tabs] |
111 | or eax, PG_SW |
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465 | serge | 112 | mov edi, edx |
113 | |||
114 | .map_kernel_tabs: |
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115 | |||
116 | stosd |
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117 | add eax, 0x1000 |
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118 | dec ecx |
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119 | jnz .map_kernel_tabs |
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120 | |||
121 | mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE |
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122 | |||
123 | mov edi, (sys_pgdir-OS_BASE) |
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124 | lea esi, [edi+(OS_BASE shr 20)] |
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125 | lodsd |
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126 | and eax, not PG_GLOBAL |
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127 | stosd |
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128 | lodsd |
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129 | and eax, not PG_GLOBAL |
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130 | stosd |
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131 | lodsd |
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132 | and eax, not PG_GLOBAL |
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133 | stosd |
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134 | ret |
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135 | endp |
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136 | |||
137 | align 4 |
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138 | proc init_page_map |
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139 | |||
140 | mov edi, sys_pgmap-OS_BASE |
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141 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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142 | shr ecx, 2 |
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513 | serge | 143 | or eax, -1 |
144 | cld |
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465 | serge | 145 | rep stosd |
146 | |||
513 | serge | 147 | mov ecx, [tmp_page_tabs] |
465 | serge | 148 | mov edx, [pg_data.pages_count-OS_BASE] |
513 | serge | 149 | shr ecx, 12 |
150 | add ecx, [pg_data.kernel_tables-OS_BASE] |
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465 | serge | 151 | sub edx, ecx |
152 | mov [pg_data.pages_free-OS_BASE], edx |
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153 | |||
513 | serge | 154 | mov edi, sys_pgmap-OS_BASE |
465 | serge | 155 | mov ebx, ecx |
156 | shr ecx, 5 |
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513 | serge | 157 | xor eax, eax |
465 | serge | 158 | rep stosd |
159 | |||
160 | not eax |
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161 | mov ecx, ebx |
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162 | and ecx, 31 |
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163 | shl eax, cl |
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164 | mov [edi], eax |
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165 | add edi, OS_BASE |
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166 | mov [page_start-OS_BASE], edi; |
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167 | |||
168 | mov ebx, sys_pgmap |
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169 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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170 | mov [page_end-OS_BASE], ebx |
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171 | |||
172 | mov [pg_data.pg_mutex-OS_BASE], 0 |
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173 | ret |
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174 | endp |
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175 | |||
176 | align 4 |
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177 | proc test_cpu |
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178 | locals |
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179 | cpu_type dd ? |
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180 | cpu_id dd ? |
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181 | cpu_Intel dd ? |
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182 | cpu_AMD dd ? |
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183 | endl |
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184 | |||
185 | mov [cpu_type], 0 |
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186 | xor eax, eax |
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187 | mov [cpu_caps-OS_BASE], eax |
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188 | mov [cpu_caps+4-OS_BASE], eax |
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189 | |||
190 | pushfd |
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191 | pop eax |
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192 | mov ecx, eax |
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193 | xor eax, 0x40000 |
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194 | push eax |
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195 | popfd |
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196 | pushfd |
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197 | pop eax |
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198 | xor eax, ecx |
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199 | mov [cpu_type], CPU_386 |
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200 | jz .end_cpuid |
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201 | push ecx |
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202 | popfd |
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203 | |||
204 | mov [cpu_type], CPU_486 |
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205 | mov eax, ecx |
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206 | xor eax, 0x200000 |
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207 | push eax |
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208 | popfd |
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209 | pushfd |
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210 | pop eax |
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211 | xor eax, ecx |
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212 | je .end_cpuid |
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213 | mov [cpu_id], 1 |
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214 | |||
215 | xor eax, eax |
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216 | cpuid |
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217 | |||
218 | mov [cpu_vendor-OS_BASE], ebx |
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219 | mov [cpu_vendor+4-OS_BASE], edx |
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220 | mov [cpu_vendor+8-OS_BASE], ecx |
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221 | cmp ebx, dword [intel_str-OS_BASE] |
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222 | jne .check_AMD |
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223 | cmp edx, dword [intel_str+4-OS_BASE] |
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224 | jne .check_AMD |
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225 | cmp ecx, dword [intel_str+8-OS_BASE] |
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226 | jne .check_AMD |
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227 | mov [cpu_Intel], 1 |
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228 | cmp eax, 1 |
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229 | jl .end_cpuid |
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230 | mov eax, 1 |
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231 | cpuid |
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232 | mov [cpu_sign-OS_BASE], eax |
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233 | mov [cpu_info-OS_BASE], ebx |
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234 | mov [cpu_caps-OS_BASE], edx |
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235 | mov [cpu_caps+4-OS_BASE],ecx |
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236 | |||
237 | shr eax, 8 |
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238 | and eax, 0x0f |
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239 | ret |
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240 | .end_cpuid: |
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241 | mov eax, [cpu_type] |
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242 | ret |
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243 | |||
244 | .check_AMD: |
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245 | cmp ebx, dword [AMD_str-OS_BASE] |
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246 | jne .unknown |
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247 | cmp edx, dword [AMD_str+4-OS_BASE] |
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248 | jne .unknown |
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249 | cmp ecx, dword [AMD_str+8-OS_BASE] |
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250 | jne .unknown |
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251 | mov [cpu_AMD], 1 |
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252 | cmp eax, 1 |
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253 | jl .unknown |
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254 | mov eax, 1 |
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255 | cpuid |
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256 | mov [cpu_sign-OS_BASE], eax |
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257 | mov [cpu_info-OS_BASE], ebx |
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258 | mov [cpu_caps-OS_BASE], edx |
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259 | mov [cpu_caps+4-OS_BASE],ecx |
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260 | shr eax, 8 |
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261 | and eax, 0x0f |
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262 | ret |
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263 | .unknown: |
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264 | mov eax, 1 |
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265 | cpuid |
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266 | mov [cpu_sign-OS_BASE], eax |
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267 | mov [cpu_info-OS_BASE], ebx |
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268 | mov [cpu_caps-OS_BASE], edx |
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269 | mov [cpu_caps+4-OS_BASE],ecx |
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270 | shr eax, 8 |
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271 | and eax, 0x0f |
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272 | ret |
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273 | endp |
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274 |