system.cc (12483:fd8c7ada2fb9) system.cc (12484:be3fa5e27fb5)
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * Copyright (c) 2018 TU Dresden
4 * All rights reserved.
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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159 initDesc.d = 0; // operand size
160 initDesc.g = 1; // granularity
161 initDesc.s = 1; // system segment
162 initDesc.limitHigh = 0xF;
163 initDesc.limitLow = 0xFFFF;
164 initDesc.baseHigh = 0x0;
165 initDesc.baseLow = 0x0;
166
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * Copyright (c) 2018 TU Dresden
4 * All rights reserved.
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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159 initDesc.d = 0; // operand size
160 initDesc.g = 1; // granularity
161 initDesc.s = 1; // system segment
162 initDesc.limitHigh = 0xF;
163 initDesc.limitLow = 0xFFFF;
164 initDesc.baseHigh = 0x0;
165 initDesc.baseLow = 0x0;
166
167 //64 bit code segment
167 // 64 bit code segment
168 SegDescriptor csDesc = initDesc;
169 csDesc.type.codeOrData = 1;
170 csDesc.dpl = 0;
168 SegDescriptor csDesc = initDesc;
169 csDesc.type.codeOrData = 1;
170 csDesc.dpl = 0;
171 //Because we're dealing with a pointer and I don't think it's
172 //guaranteed that there isn't anything in a nonvirtual class between
173 //it's beginning in memory and it's actual data, we'll use an
174 //intermediary.
171 // Because we're dealing with a pointer and I don't think it's
172 // guaranteed that there isn't anything in a nonvirtual class between
173 // it's beginning in memory and it's actual data, we'll use an
174 // intermediary.
175 uint64_t csDescVal = csDesc;
176 physProxy.writeBlob(GDTBase + numGDTEntries * 8,
177 (uint8_t *)(&csDescVal), 8);
178
179 numGDTEntries++;
180
181 SegSelector cs = 0;
182 cs.si = numGDTEntries - 1;
183
184 tc->setMiscReg(MISCREG_CS, (MiscReg)cs);
185
175 uint64_t csDescVal = csDesc;
176 physProxy.writeBlob(GDTBase + numGDTEntries * 8,
177 (uint8_t *)(&csDescVal), 8);
178
179 numGDTEntries++;
180
181 SegSelector cs = 0;
182 cs.si = numGDTEntries - 1;
183
184 tc->setMiscReg(MISCREG_CS, (MiscReg)cs);
185
186 //32 bit data segment
186 // 32 bit data segment
187 SegDescriptor dsDesc = initDesc;
188 uint64_t dsDescVal = dsDesc;
189 physProxy.writeBlob(GDTBase + numGDTEntries * 8,
190 (uint8_t *)(&dsDescVal), 8);
191
192 numGDTEntries++;
193
194 SegSelector ds = 0;

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270 base += pageSize;
271 }
272 }
273
274 /*
275 * Transition from real mode all the way up to Long mode
276 */
277 CR0 cr0 = tc->readMiscRegNoEffect(MISCREG_CR0);
187 SegDescriptor dsDesc = initDesc;
188 uint64_t dsDescVal = dsDesc;
189 physProxy.writeBlob(GDTBase + numGDTEntries * 8,
190 (uint8_t *)(&dsDescVal), 8);
191
192 numGDTEntries++;
193
194 SegSelector ds = 0;

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270 base += pageSize;
271 }
272 }
273
274 /*
275 * Transition from real mode all the way up to Long mode
276 */
277 CR0 cr0 = tc->readMiscRegNoEffect(MISCREG_CR0);
278 //Turn off paging.
278 // Turn off paging.
279 cr0.pg = 0;
280 tc->setMiscReg(MISCREG_CR0, cr0);
279 cr0.pg = 0;
280 tc->setMiscReg(MISCREG_CR0, cr0);
281 //Turn on protected mode.
281 // Turn on protected mode.
282 cr0.pe = 1;
283 tc->setMiscReg(MISCREG_CR0, cr0);
284
285 CR4 cr4 = tc->readMiscRegNoEffect(MISCREG_CR4);
282 cr0.pe = 1;
283 tc->setMiscReg(MISCREG_CR0, cr0);
284
285 CR4 cr4 = tc->readMiscRegNoEffect(MISCREG_CR4);
286 //Turn on pae.
286 // Turn on pae.
287 cr4.pae = 1;
288 tc->setMiscReg(MISCREG_CR4, cr4);
289
287 cr4.pae = 1;
288 tc->setMiscReg(MISCREG_CR4, cr4);
289
290 //Point to the page tables.
290 // Point to the page tables.
291 tc->setMiscReg(MISCREG_CR3, PageMapLevel4);
292
293 Efer efer = tc->readMiscRegNoEffect(MISCREG_EFER);
291 tc->setMiscReg(MISCREG_CR3, PageMapLevel4);
292
293 Efer efer = tc->readMiscRegNoEffect(MISCREG_EFER);
294 //Enable long mode.
294 // Enable long mode.
295 efer.lme = 1;
296 tc->setMiscReg(MISCREG_EFER, efer);
297
295 efer.lme = 1;
296 tc->setMiscReg(MISCREG_EFER, efer);
297
298 //Start using longmode segments.
298 // Start using longmode segments.
299 installSegDesc(tc, SEGMENT_REG_CS, csDesc, true);
300 installSegDesc(tc, SEGMENT_REG_DS, dsDesc, true);
301 installSegDesc(tc, SEGMENT_REG_ES, dsDesc, true);
302 installSegDesc(tc, SEGMENT_REG_FS, dsDesc, true);
303 installSegDesc(tc, SEGMENT_REG_GS, dsDesc, true);
304 installSegDesc(tc, SEGMENT_REG_SS, dsDesc, true);
305
299 installSegDesc(tc, SEGMENT_REG_CS, csDesc, true);
300 installSegDesc(tc, SEGMENT_REG_DS, dsDesc, true);
301 installSegDesc(tc, SEGMENT_REG_ES, dsDesc, true);
302 installSegDesc(tc, SEGMENT_REG_FS, dsDesc, true);
303 installSegDesc(tc, SEGMENT_REG_GS, dsDesc, true);
304 installSegDesc(tc, SEGMENT_REG_SS, dsDesc, true);
305
306 //Activate long mode.
306 // Activate long mode.
307 cr0.pg = 1;
308 tc->setMiscReg(MISCREG_CR0, cr0);
309
310 tc->pcState(tc->getSystemPtr()->kernelEntry);
311
312 // We should now be in long mode. Yay!
313
314 Addr ebdaPos = 0xF0000;
315 Addr fixed, table;
316
307 cr0.pg = 1;
308 tc->setMiscReg(MISCREG_CR0, cr0);
309
310 tc->pcState(tc->getSystemPtr()->kernelEntry);
311
312 // We should now be in long mode. Yay!
313
314 Addr ebdaPos = 0xF0000;
315 Addr fixed, table;
316
317 //Write out the SMBios/DMI table
317 // Write out the SMBios/DMI table.
318 writeOutSMBiosTable(ebdaPos, fixed, table);
319 ebdaPos += (fixed + table);
320 ebdaPos = roundUp(ebdaPos, 16);
321
318 writeOutSMBiosTable(ebdaPos, fixed, table);
319 ebdaPos += (fixed + table);
320 ebdaPos = roundUp(ebdaPos, 16);
321
322 //Write out the Intel MP Specification configuration table
322 // Write out the Intel MP Specification configuration table.
323 writeOutMPTable(ebdaPos, fixed, table);
324 ebdaPos += (fixed + table);
325}
326
327void
328X86System::writeOutSMBiosTable(Addr header,
329 Addr &headerSize, Addr &structSize, Addr table)
330{
331 // If the table location isn't specified, just put it after the header.
323 writeOutMPTable(ebdaPos, fixed, table);
324 ebdaPos += (fixed + table);
325}
326
327void
328X86System::writeOutSMBiosTable(Addr header,
329 Addr &headerSize, Addr &structSize, Addr table)
330{
331 // If the table location isn't specified, just put it after the header.
332 // The header size as of the 2.5 SMBios specification is 0x1F bytes
332 // The header size as of the 2.5 SMBios specification is 0x1F bytes.
333 if (!table)
334 table = header + 0x1F;
335 smbiosTable->setTableAddr(table);
336
337 smbiosTable->writeOut(physProxy, header, headerSize, structSize);
338
339 // Do some bounds checking to make sure we at least didn't step on
340 // ourselves.

--- 41 unchanged lines hidden --- 		333 if (!table)
334 table = header + 0x1F;
335 smbiosTable->setTableAddr(table);
336
337 smbiosTable->writeOut(physProxy, header, headerSize, structSize);
338
339 // Do some bounds checking to make sure we at least didn't step on
340 // ourselves.

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