DevFwCommon.cpp@ 44760

Last change on this file since 44760 was 44752, checked in by vboxsync, 12 years ago
DMI: update Processor Information table (tyoe 4): do not refer to non-existent Cache Information table (type 7) handles since we do not provide them.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 43.8 KB

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1	/* $Id: DevFwCommon.cpp 44752 2013-02-19 13:37:25Z vboxsync $ */
2	/** @file
3	* FwCommon - Shared firmware code (used by DevPcBios & DevEFI).
4	*/
5
6	/*
7	* Copyright (C) 2009-2012 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_DEV
22	#include <VBox/vmm/pdmdev.h>
23
24	#include <VBox/log.h>
25	#include <VBox/err.h>
26	#include <VBox/param.h>
27
28	#include <iprt/asm.h>
29	#include <iprt/assert.h>
30	#include <iprt/buildconfig.h>
31	#include <iprt/file.h>
32	#include <iprt/mem.h>
33	#include <iprt/string.h>
34	#include <iprt/uuid.h>
35	#include <iprt/system.h>
36
37	#include "VBoxDD.h"
38	#include "VBoxDD2.h"
39	#include "DevFwCommon.h"
40
41
42	/*******************************************************************************
43	* Defined Constants And Macros *
44	*******************************************************************************/
45
46	/*
47	* Default DMI data (legacy).
48	* Don't change this information otherwise Windows guests might demand re-activation!
49	*/
50
51	/* type 0 -- DMI BIOS information */
52	static const int32_t s_iDefDmiBIOSReleaseMajor = 0;
53	static const int32_t s_iDefDmiBIOSReleaseMinor = 0;
54	static const int32_t s_iDefDmiBIOSFirmwareMajor = 0;
55	static const int32_t s_iDefDmiBIOSFirmwareMinor = 0;
56	static const char *s_szDefDmiBIOSVendor = "innotek GmbH";
57	static const char *s_szDefDmiBIOSVersion = "VirtualBox";
58	static const char *s_szDefDmiBIOSReleaseDate = "12/01/2006";
59	/* type 1 -- DMI system information */
60	static const char *s_szDefDmiSystemVendor = "innotek GmbH";
61	static const char *s_szDefDmiSystemProduct = "VirtualBox";
62	static const char *s_szDefDmiSystemVersion = "1.2";
63	static const char *s_szDefDmiSystemSerial = "0";
64	static const char *s_szDefDmiSystemSKU = "";
65	static const char *s_szDefDmiSystemFamily = "Virtual Machine";
66	/* type 2 -- DMI board information */
67	static const char *s_szDefDmiBoardVendor = "Oracle Corporation";
68	static const char *s_szDefDmiBoardProduct = "VirtualBox";
69	static const char *s_szDefDmiBoardVersion = "1.2";
70	static const char *s_szDefDmiBoardSerial = "0";
71	static const char *s_szDefDmiBoardAssetTag = "";
72	static const char *s_szDefDmiBoardLocInChass = "";
73	static const int32_t s_iDefDmiBoardBoardType = 0x0A; /* Motherboard */
74	/* type 3 -- DMI chassis information */
75	static const char *s_szDefDmiChassisVendor = "Oracle Corporation";
76	static const char *s_szDefDmiChassisVersion = "";
77	static const char *s_szDefDmiChassisSerial = "";
78	static const char *s_szDefDmiChassisAssetTag = "";
79	/* type 4 -- DMI processor information */
80	static const char *s_szDefDmiProcManufacturer = "GenuineIntel";
81	static const char *s_szDefDmiProcVersion = "Pentium(R) III";
82
83	static char g_szHostDmiSystemProduct[64];
84	static char g_szHostDmiSystemVersion[64];
85
86
87	/*******************************************************************************
88	* Structures and Typedefs *
89	*******************************************************************************/
90	#pragma pack(1)
91
92	typedef struct SMBIOSHDR
93	{
94	uint8_t au8Signature[4];
95	uint8_t u8Checksum;
96	uint8_t u8Eps;
97	uint8_t u8VersionMajor;
98	uint8_t u8VersionMinor;
99	uint16_t u16MaxStructureSize;
100	uint8_t u8EntryPointRevision;
101	uint8_t u8Pad[5];
102	} *SMBIOSHDRPTR;
103	AssertCompileSize(SMBIOSHDR, 16);
104
105	typedef struct DMIMAINHDR
106	{
107	uint8_t au8Signature[5];
108	uint8_t u8Checksum;
109	uint16_t u16TablesLength;
110	uint32_t u32TableBase;
111	uint16_t u16TableEntries;
112	uint8_t u8TableVersion;
113	} *DMIMAINHDRPTR;
114	AssertCompileSize(DMIMAINHDR, 15);
115
116	/** DMI header */
117	typedef struct DMIHDR
118	{
119	uint8_t u8Type;
120	uint8_t u8Length;
121	uint16_t u16Handle;
122	} *PDMIHDR;
123	AssertCompileSize(DMIHDR, 4);
124
125	/** DMI BIOS information (Type 0) */
126	typedef struct DMIBIOSINF
127	{
128	DMIHDR header;
129	uint8_t u8Vendor;
130	uint8_t u8Version;
131	uint16_t u16Start;
132	uint8_t u8Release;
133	uint8_t u8ROMSize;
134	uint64_t u64Characteristics;
135	uint8_t u8CharacteristicsByte1;
136	uint8_t u8CharacteristicsByte2;
137	uint8_t u8ReleaseMajor;
138	uint8_t u8ReleaseMinor;
139	uint8_t u8FirmwareMajor;
140	uint8_t u8FirmwareMinor;
141	} *PDMIBIOSINF;
142	AssertCompileSize(DMIBIOSINF, 0x18);
143
144	/** DMI system information (Type 1) */
145	typedef struct DMISYSTEMINF
146	{
147	DMIHDR header;
148	uint8_t u8Manufacturer;
149	uint8_t u8ProductName;
150	uint8_t u8Version;
151	uint8_t u8SerialNumber;
152	uint8_t au8Uuid[16];
153	uint8_t u8WakeupType;
154	uint8_t u8SKUNumber;
155	uint8_t u8Family;
156	} *PDMISYSTEMINF;
157	AssertCompileSize(DMISYSTEMINF, 0x1b);
158
159	/** DMI board (or module) information (Type 2) */
160	typedef struct DMIBOARDINF
161	{
162	DMIHDR header;
163	uint8_t u8Manufacturer;
164	uint8_t u8Product;
165	uint8_t u8Version;
166	uint8_t u8SerialNumber;
167	uint8_t u8AssetTag;
168	uint8_t u8FeatureFlags;
169	uint8_t u8LocationInChass;
170	uint16_t u16ChassisHandle;
171	uint8_t u8BoardType;
172	uint8_t u8cObjectHandles;
173	} *PDMIBOARDINF;
174	AssertCompileSize(DMIBOARDINF, 0x0f);
175
176	/** DMI system enclosure or chassis type (Type 3) */
177	typedef struct DMICHASSIS
178	{
179	DMIHDR header;
180	uint8_t u8Manufacturer;
181	uint8_t u8Type;
182	uint8_t u8Version;
183	uint8_t u8SerialNumber;
184	uint8_t u8AssetTag;
185	uint8_t u8BootupState;
186	uint8_t u8PowerSupplyState;
187	uint8_t u8ThermalState;
188	uint8_t u8SecurityStatus;
189	/* v2.3+, currently not supported */
190	uint32_t u32OEMdefined;
191	uint8_t u8Height;
192	uint8_t u8NumPowerChords;
193	uint8_t u8ContElems;
194	uint8_t u8ContElemRecLen;
195	} *PDMICHASSIS;
196	AssertCompileSize(DMICHASSIS, 0x15);
197
198	/** DMI processor information (Type 4) */
199	typedef struct DMIPROCESSORINF
200	{
201	DMIHDR header;
202	uint8_t u8SocketDesignation;
203	uint8_t u8ProcessorType;
204	uint8_t u8ProcessorFamily;
205	uint8_t u8ProcessorManufacturer;
206	uint64_t u64ProcessorID;
207	uint8_t u8ProcessorVersion;
208	uint8_t u8Voltage;
209	uint16_t u16ExternalClock;
210	uint16_t u16MaxSpeed;
211	uint16_t u16CurrentSpeed;
212	uint8_t u8Status;
213	uint8_t u8ProcessorUpgrade;
214	/* v2.1+ */
215	uint16_t u16L1CacheHandle;
216	uint16_t u16L2CacheHandle;
217	uint16_t u16L3CacheHandle;
218	/* v2.3+ */
219	uint8_t u8SerialNumber;
220	uint8_t u8AssetTag;
221	uint8_t u8PartNumber;
222	/* v2.5+ */
223	uint8_t u8CoreCount;
224	uint8_t u8CoreEnabled;
225	uint8_t u8ThreadCount;
226	uint16_t u16ProcessorCharacteristics;
227	/* v2.6+ */
228	uint16_t u16ProcessorFamily2;
229	} *PDMIPROCESSORINF;
230	AssertCompileSize(DMIPROCESSORINF, 0x2a);
231
232	/** DMI OEM strings (Type 11) */
233	typedef struct DMIOEMSTRINGS
234	{
235	DMIHDR header;
236	uint8_t u8Count;
237	uint8_t u8VBoxVersion;
238	uint8_t u8VBoxRevision;
239	} *PDMIOEMSTRINGS;
240	AssertCompileSize(DMIOEMSTRINGS, 0x7);
241
242	/** Physical memory array (Type 16) */
243	typedef struct DMIRAMARRAY
244	{
245	DMIHDR header;
246	uint8_t u8Location;
247	uint8_t u8Use;
248	uint8_t u8MemErrorCorrection;
249	uint32_t u32MaxCapacity;
250	uint16_t u16MemErrorHandle;
251	uint16_t u16NumberOfMemDevices;
252	} *PDMIRAMARRAY;
253	AssertCompileSize(DMIRAMARRAY, 15);
254
255	/** DMI Memory Device (Type 17) */
256	typedef struct DMIMEMORYDEV
257	{
258	DMIHDR header;
259	uint16_t u16PhysMemArrayHandle;
260	uint16_t u16MemErrHandle;
261	uint16_t u16TotalWidth;
262	uint16_t u16DataWidth;
263	uint16_t u16Size;
264	uint8_t u8FormFactor;
265	uint8_t u8DeviceSet;
266	uint8_t u8DeviceLocator;
267	uint8_t u8BankLocator;
268	uint8_t u8MemoryType;
269	uint16_t u16TypeDetail;
270	uint16_t u16Speed;
271	uint8_t u8Manufacturer;
272	uint8_t u8SerialNumber;
273	uint8_t u8AssetTag;
274	uint8_t u8PartNumber;
275	/* v2.6+ */
276	uint8_t u8Attributes;
277	} *PDMIMEMORYDEV;
278	AssertCompileSize(DMIMEMORYDEV, 28);
279
280	/** MPS floating pointer structure */
281	typedef struct MPSFLOATPTR
282	{
283	uint8_t au8Signature[4];
284	uint32_t u32MPSAddr;
285	uint8_t u8Length;
286	uint8_t u8SpecRev;
287	uint8_t u8Checksum;
288	uint8_t au8Feature[5];
289	} *PMPSFLOATPTR;
290	AssertCompileSize(MPSFLOATPTR, 16);
291
292	/** MPS config table header */
293	typedef struct MPSCFGTBLHEADER
294	{
295	uint8_t au8Signature[4];
296	uint16_t u16Length;
297	uint8_t u8SpecRev;
298	uint8_t u8Checksum;
299	uint8_t au8OemId[8];
300	uint8_t au8ProductId[12];
301	uint32_t u32OemTablePtr;
302	uint16_t u16OemTableSize;
303	uint16_t u16EntryCount;
304	uint32_t u32AddrLocalApic;
305	uint16_t u16ExtTableLength;
306	uint8_t u8ExtTableChecksum;
307	uint8_t u8Reserved;
308	} *PMPSCFGTBLHEADER;
309	AssertCompileSize(MPSCFGTBLHEADER, 0x2c);
310
311	/** MPS processor entry */
312	typedef struct MPSPROCENTRY
313	{
314	uint8_t u8EntryType;
315	uint8_t u8LocalApicId;
316	uint8_t u8LocalApicVersion;
317	uint8_t u8CPUFlags;
318	uint32_t u32CPUSignature;
319	uint32_t u32CPUFeatureFlags;
320	uint32_t u32Reserved[2];
321	} *PMPSPROCENTRY;
322	AssertCompileSize(MPSPROCENTRY, 20);
323
324	/** MPS bus entry */
325	typedef struct MPSBUSENTRY
326	{
327	uint8_t u8EntryType;
328	uint8_t u8BusId;
329	uint8_t au8BusTypeStr[6];
330	} *PMPSBUSENTRY;
331	AssertCompileSize(MPSBUSENTRY, 8);
332
333	/** MPS I/O-APIC entry */
334	typedef struct MPSIOAPICENTRY
335	{
336	uint8_t u8EntryType;
337	uint8_t u8Id;
338	uint8_t u8Version;
339	uint8_t u8Flags;
340	uint32_t u32Addr;
341	} *PMPSIOAPICENTRY;
342	AssertCompileSize(MPSIOAPICENTRY, 8);
343
344	/** MPS I/O-Interrupt entry */
345	typedef struct MPSIOINTERRUPTENTRY
346	{
347	uint8_t u8EntryType;
348	uint8_t u8Type;
349	uint16_t u16Flags;
350	uint8_t u8SrcBusId;
351	uint8_t u8SrcBusIrq;
352	uint8_t u8DstIOAPICId;
353	uint8_t u8DstIOAPICInt;
354	} *PMPSIOIRQENTRY;
355	AssertCompileSize(MPSIOINTERRUPTENTRY, 8);
356
357	#pragma pack()
358
359
360	/**
361	* Calculate a simple checksum for the MPS table.
362	*
363	* @param data data
364	* @param len size of data
365	*/
366	static uint8_t fwCommonChecksum(const uint8_t * const au8Data, uint32_t u32Length)
367	{
368	uint8_t u8Sum = 0;
369	for (size_t i = 0; i < u32Length; ++i)
370	u8Sum += au8Data[i];
371	return -u8Sum;
372	}
373
374	#if 0 /* unused */
375	static bool fwCommonChecksumOk(const uint8_t * const au8Data, uint32_t u32Length)
376	{
377	uint8_t u8Sum = 0;
378	for (size_t i = 0; i < u32Length; i++)
379	u8Sum += au8Data[i];
380	return (u8Sum == 0);
381	}
382	#endif
383
384	/**
385	* Try fetch the DMI strings from the system.
386	*/
387	static void fwCommonUseHostDMIStrings(void)
388	{
389	int rc;
390
391	rc = RTSystemQueryDmiString(RTSYSDMISTR_PRODUCT_NAME,
392	g_szHostDmiSystemProduct, sizeof(g_szHostDmiSystemProduct));
393	if (RT_SUCCESS(rc))
394	{
395	s_szDefDmiSystemProduct = g_szHostDmiSystemProduct;
396	LogRel(("DMI: Using DmiSystemProduct from host: %s\n", g_szHostDmiSystemProduct));
397	}
398
399	rc = RTSystemQueryDmiString(RTSYSDMISTR_PRODUCT_VERSION,
400	g_szHostDmiSystemVersion, sizeof(g_szHostDmiSystemVersion));
401	if (RT_SUCCESS(rc))
402	{
403	s_szDefDmiSystemVersion = g_szHostDmiSystemVersion;
404	LogRel(("DMI: Using DmiSystemVersion from host: %s\n", g_szHostDmiSystemVersion));
405	}
406	}
407
408	/**
409	* Construct the DMI table.
410	*
411	* @returns VBox status code.
412	* @param pDevIns The device instance.
413	* @param pTable Where to create the DMI table.
414	* @param cbMax The maximum size of the DMI table.
415	* @param pUuid Pointer to the UUID to use if the DmiUuid
416	* configuration string isn't present.
417	* @param pCfg The handle to our config node.
418	*/
419	int FwCommonPlantDMITable(PPDMDEVINS pDevIns, uint8_t pTable, unsigned cbMax, PCRTUUID pUuid, PCFGMNODE pCfg, uint16_t cCpus, uint16_t pcbDmiTables)
420	{
421	#define CHECKSIZE(cbWant) \
422	{ \
423	size_t cbNeed = (size_t)(pszStr + cbWant - (char )pTable) + 5; / +1 for strtab terminator +4 for end-of-table entry */ \
424	if (cbNeed > cbMax) \
425	{ \
426	if (fHideErrors) \
427	{ \
428	LogRel(("One of the DMI strings is too long -- using default DMI data!\n")); \
429	continue; \
430	} \
431	return PDMDevHlpVMSetError(pDevIns, VERR_TOO_MUCH_DATA, RT_SRC_POS, \
432	N_("One of the DMI strings is too long. Check all bios/Dmi* configuration entries. At least %zu bytes are needed but there is no space for more than %d bytes"), cbNeed, cbMax); \
433	} \
434	}
435
436	#define READCFGSTRDEF(variable, name, default_value) \
437	{ \
438	if (fForceDefault) \
439	pszTmp = default_value; \
440	else \
441	{ \
442	rc = CFGMR3QueryStringDef(pCfg, name, szBuf, sizeof(szBuf), default_value); \
443	if (RT_FAILURE(rc)) \
444	{ \
445	if (fHideErrors) \
446	{ \
447	LogRel(("Configuration error: Querying \"" name "\" as a string failed -- using default DMI data!\n")); \
448	continue; \
449	} \
450	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, \
451	N_("Configuration error: Querying \"" name "\" as a string failed")); \
452	} \
453	else if (!strcmp(szBuf, "<EMPTY>")) \
454	pszTmp = ""; \
455	else \
456	pszTmp = szBuf; \
457	} \
458	if (!pszTmp[0]) \
459	variable = 0; /* empty string */ \
460	else \
461	{ \
462	variable = iStrNr++; \
463	size_t cStr = strlen(pszTmp) + 1; \
464	CHECKSIZE(cStr); \
465	memcpy(pszStr, pszTmp, cStr); \
466	pszStr += cStr ; \
467	} \
468	}
469
470	#define READCFGSTR(variable, name) \
471	READCFGSTRDEF(variable, # name, s_szDef ## name)
472
473	#define READCFGINT(variable, name) \
474	{ \
475	if (fForceDefault) \
476	variable = s_iDef ## name; \
477	else \
478	{ \
479	rc = CFGMR3QueryS32Def(pCfg, # name, & variable, s_iDef ## name); \
480	if (RT_FAILURE(rc)) \
481	{ \
482	if (fHideErrors) \
483	{ \
484	LogRel(("Configuration error: Querying \"" # name "\" as an int failed -- using default DMI data!\n")); \
485	continue; \
486	} \
487	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, \
488	N_("Configuration error: Querying \"" # name "\" as an int failed")); \
489	} \
490	} \
491	}
492
493	#define START_STRUCT(tbl) \
494	pszStr = (char *)(tbl + 1); \
495	iStrNr = 1;
496
497	#define TERM_STRUCT \
498	{ \
499	pszStr++ = '\0'; / terminate set of text strings */ \
500	if (iStrNr == 1) \
501	pszStr++ = '\0'; / terminate a structure without strings */ \
502	}
503
504	bool fForceDefault = false;
505	#ifdef VBOX_BIOS_DMI_FALLBACK
506	/*
507	* There will be two passes. If an error occurs during the first pass, a
508	* message will be written to the release log and we fall back to default
509	* DMI data and start a second pass.
510	*/
511	bool fHideErrors = true;
512	#else
513	/*
514	* There will be one pass, every error is fatal and will prevent the VM
515	* from starting.
516	*/
517	bool fHideErrors = false;
518	#endif
519
520	uint8_t fDmiUseHostInfo;
521	int rc = CFGMR3QueryU8Def(pCfg, "DmiUseHostInfo", &fDmiUseHostInfo, 0);
522	if (RT_FAILURE (rc))
523	return PDMDEV_SET_ERROR(pDevIns, rc,
524	N_("Configuration error: Failed to read \"DmiUseHostInfo\""));
525
526	/* Sync up with host default DMI values */
527	if (fDmiUseHostInfo)
528	fwCommonUseHostDMIStrings();
529
530	uint8_t fDmiExposeMemoryTable;
531	rc = CFGMR3QueryU8Def(pCfg, "DmiExposeMemoryTable", &fDmiExposeMemoryTable, 0);
532	if (RT_FAILURE (rc))
533	return PDMDEV_SET_ERROR(pDevIns, rc,
534	N_("Configuration error: Failed to read \"DmiExposeMemoryTable\""));
535	uint8_t fDmiExposeProcessorInf;
536	rc = CFGMR3QueryU8Def(pCfg, "DmiExposeProcInf", &fDmiExposeProcessorInf, 0);
537	if (RT_FAILURE (rc))
538	return PDMDEV_SET_ERROR(pDevIns, rc,
539	N_("Configuration error: Failed to read \"DmiExposeProcInf\""));
540
541	for (;; fForceDefault = true, fHideErrors = false)
542	{
543	int iStrNr;
544	char szBuf[256];
545	char pszStr = (char )pTable;
546	char szDmiSystemUuid[64];
547	char *pszDmiSystemUuid;
548	const char *pszTmp;
549
550	if (fForceDefault)
551	pszDmiSystemUuid = NULL;
552	else
553	{
554	rc = CFGMR3QueryString(pCfg, "DmiSystemUuid", szDmiSystemUuid, sizeof(szDmiSystemUuid));
555	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
556	pszDmiSystemUuid = NULL;
557	else if (RT_FAILURE(rc))
558	{
559	if (fHideErrors)
560	{
561	LogRel(("Configuration error: Querying \"DmiSystemUuid\" as a string failed, using default DMI data\n"));
562	continue;
563	}
564	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
565	N_("Configuration error: Querying \"DmiSystemUuid\" as a string failed"));
566	}
567	else
568	pszDmiSystemUuid = szDmiSystemUuid;
569	}
570
571	/*********************************
572	* DMI BIOS information (Type 0) *
573	*********************************/
574	PDMIBIOSINF pBIOSInf = (PDMIBIOSINF)pszStr;
575	CHECKSIZE(sizeof(*pBIOSInf));
576
577	pszStr = (char *)&pBIOSInf->u8ReleaseMajor;
578	pBIOSInf->header.u8Length = RT_OFFSETOF(DMIBIOSINF, u8ReleaseMajor);
579
580	/* don't set these fields by default for legacy compatibility */
581	int iDmiBIOSReleaseMajor, iDmiBIOSReleaseMinor;
582	READCFGINT(iDmiBIOSReleaseMajor, DmiBIOSReleaseMajor);
583	READCFGINT(iDmiBIOSReleaseMinor, DmiBIOSReleaseMinor);
584	if (iDmiBIOSReleaseMajor != 0 \|\| iDmiBIOSReleaseMinor != 0)
585	{
586	pszStr = (char *)&pBIOSInf->u8FirmwareMajor;
587	pBIOSInf->header.u8Length = RT_OFFSETOF(DMIBIOSINF, u8FirmwareMajor);
588	pBIOSInf->u8ReleaseMajor = iDmiBIOSReleaseMajor;
589	pBIOSInf->u8ReleaseMinor = iDmiBIOSReleaseMinor;
590
591	int iDmiBIOSFirmwareMajor, iDmiBIOSFirmwareMinor;
592	READCFGINT(iDmiBIOSFirmwareMajor, DmiBIOSFirmwareMajor);
593	READCFGINT(iDmiBIOSFirmwareMinor, DmiBIOSFirmwareMinor);
594	if (iDmiBIOSFirmwareMajor != 0 \|\| iDmiBIOSFirmwareMinor != 0)
595	{
596	pszStr = (char *)(pBIOSInf + 1);
597	pBIOSInf->header.u8Length = sizeof(DMIBIOSINF);
598	pBIOSInf->u8FirmwareMajor = iDmiBIOSFirmwareMajor;
599	pBIOSInf->u8FirmwareMinor = iDmiBIOSFirmwareMinor;
600	}
601	}
602
603	iStrNr = 1;
604	pBIOSInf->header.u8Type = 0; /* BIOS Information */
605	pBIOSInf->header.u16Handle = 0x0000;
606	READCFGSTR(pBIOSInf->u8Vendor, DmiBIOSVendor);
607	READCFGSTR(pBIOSInf->u8Version, DmiBIOSVersion);
608	pBIOSInf->u16Start = 0xE000;
609	READCFGSTR(pBIOSInf->u8Release, DmiBIOSReleaseDate);
610	pBIOSInf->u8ROMSize = 1; /* 128K */
611	pBIOSInf->u64Characteristics = RT_BIT(4) /* ISA is supported */
612	\| RT_BIT(7) /* PCI is supported */
613	\| RT_BIT(15) /* Boot from CD is supported */
614	\| RT_BIT(16) /* Selectable Boot is supported */
615	\| RT_BIT(27) /* Int 9h, 8042 Keyboard services supported */
616	\| RT_BIT(30) /* Int 10h, CGA/Mono Video Services supported */
617	/* any more?? */
618	;
619	pBIOSInf->u8CharacteristicsByte1 = RT_BIT(0) /* ACPI is supported */
620	/* any more?? */
621	;
622	pBIOSInf->u8CharacteristicsByte2 = 0
623	/* any more?? */
624	;
625	TERM_STRUCT;
626
627	/***********************************
628	* DMI system information (Type 1) *
629	***********************************/
630	PDMISYSTEMINF pSystemInf = (PDMISYSTEMINF)pszStr;
631	CHECKSIZE(sizeof(*pSystemInf));
632	START_STRUCT(pSystemInf);
633	pSystemInf->header.u8Type = 1; /* System Information */
634	pSystemInf->header.u8Length = sizeof(*pSystemInf);
635	pSystemInf->header.u16Handle = 0x0001;
636	READCFGSTR(pSystemInf->u8Manufacturer, DmiSystemVendor);
637	READCFGSTR(pSystemInf->u8ProductName, DmiSystemProduct);
638	READCFGSTR(pSystemInf->u8Version, DmiSystemVersion);
639	READCFGSTR(pSystemInf->u8SerialNumber, DmiSystemSerial);
640
641	RTUUID uuid;
642	if (pszDmiSystemUuid)
643	{
644	rc = RTUuidFromStr(&uuid, pszDmiSystemUuid);
645	if (RT_FAILURE(rc))
646	{
647	if (fHideErrors)
648	{
649	LogRel(("Configuration error: Invalid UUID for DMI tables specified, using default DMI data\n"));
650	continue;
651	}
652	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
653	N_("Configuration error: Invalid UUID for DMI tables specified"));
654	}
655	uuid.Gen.u32TimeLow = RT_H2BE_U32(uuid.Gen.u32TimeLow);
656	uuid.Gen.u16TimeMid = RT_H2BE_U16(uuid.Gen.u16TimeMid);
657	uuid.Gen.u16TimeHiAndVersion = RT_H2BE_U16(uuid.Gen.u16TimeHiAndVersion);
658	pUuid = &uuid;
659	}
660	memcpy(pSystemInf->au8Uuid, pUuid, sizeof(RTUUID));
661
662	pSystemInf->u8WakeupType = 6; /* Power Switch */
663	READCFGSTR(pSystemInf->u8SKUNumber, DmiSystemSKU);
664	READCFGSTR(pSystemInf->u8Family, DmiSystemFamily);
665	TERM_STRUCT;
666
667	/**********************************
668	* DMI board information (Type 2) *
669	**********************************/
670	PDMIBOARDINF pBoardInf = (PDMIBOARDINF)pszStr;
671	CHECKSIZE(sizeof(*pBoardInf));
672	START_STRUCT(pBoardInf);
673	int iDmiBoardBoardType;
674	pBoardInf->header.u8Type = 2; /* Board Information */
675	pBoardInf->header.u8Length = sizeof(*pBoardInf);
676	pBoardInf->header.u16Handle = 0x0008;
677	READCFGSTR(pBoardInf->u8Manufacturer, DmiBoardVendor);
678	READCFGSTR(pBoardInf->u8Product, DmiBoardProduct);
679	READCFGSTR(pBoardInf->u8Version, DmiBoardVersion);
680	READCFGSTR(pBoardInf->u8SerialNumber, DmiBoardSerial);
681	READCFGSTR(pBoardInf->u8AssetTag, DmiBoardAssetTag);
682	pBoardInf->u8FeatureFlags = RT_BIT(0) /* hosting board, e.g. motherboard */
683	;
684	READCFGSTR(pBoardInf->u8LocationInChass, DmiBoardLocInChass);
685	pBoardInf->u16ChassisHandle = 0x0003; /* see type 3 */
686	READCFGINT(iDmiBoardBoardType, DmiBoardBoardType);
687	pBoardInf->u8BoardType = iDmiBoardBoardType;
688	pBoardInf->u8cObjectHandles = 0;
689
690	TERM_STRUCT;
691
692	/********************************************
693	* DMI System Enclosure or Chassis (Type 3) *
694	********************************************/
695	PDMICHASSIS pChassis = (PDMICHASSIS)pszStr;
696	CHECKSIZE(sizeof(*pChassis));
697	pszStr = (char*)&pChassis->u32OEMdefined;
698	iStrNr = 1;
699	#ifdef VBOX_WITH_DMI_CHASSIS
700	pChassis->header.u8Type = 3; /* System Enclosure or Chassis */
701	#else
702	pChassis->header.u8Type = 0x7e; /* inactive */
703	#endif
704	pChassis->header.u8Length = RT_OFFSETOF(DMICHASSIS, u32OEMdefined);
705	pChassis->header.u16Handle = 0x0003;
706	READCFGSTR(pChassis->u8Manufacturer, DmiChassisVendor);
707	pChassis->u8Type = 0x01; /* ''other'', no chassis lock present */
708	READCFGSTR(pChassis->u8Version, DmiChassisVersion);
709	READCFGSTR(pChassis->u8SerialNumber, DmiChassisSerial);
710	READCFGSTR(pChassis->u8AssetTag, DmiChassisAssetTag);
711	pChassis->u8BootupState = 0x03; /* safe */
712	pChassis->u8PowerSupplyState = 0x03; /* safe */
713	pChassis->u8ThermalState = 0x03; /* safe */
714	pChassis->u8SecurityStatus = 0x03; /* none XXX */
715	# if 0
716	/* v2.3+, currently not supported */
717	pChassis->u32OEMdefined = 0;
718	pChassis->u8Height = 0; /* unspecified */
719	pChassis->u8NumPowerChords = 0; /* unspecified */
720	pChassis->u8ContElems = 0; /* no contained elements */
721	pChassis->u8ContElemRecLen = 0; /* no contained elements */
722	# endif
723	TERM_STRUCT;
724
725	/**************************************
726	* DMI Processor Information (Type 4) *
727	**************************************/
728
729	/*
730	* This is just a dummy processor. Should we expose the real guest CPU features
731	* here? Accessing this information at this point is difficult.
732	*/
733	char szSocket[32];
734	PDMIPROCESSORINF pProcessorInf = (PDMIPROCESSORINF)pszStr;
735	CHECKSIZE(sizeof(*pProcessorInf));
736	START_STRUCT(pProcessorInf);
737	if (fDmiExposeProcessorInf)
738	pProcessorInf->header.u8Type = 4; /* Processor Information */
739	else
740	pProcessorInf->header.u8Type = 126; /* inactive structure */
741	pProcessorInf->header.u8Length = sizeof(*pProcessorInf);
742	pProcessorInf->header.u16Handle = 0x0007;
743	RTStrPrintf(szSocket, sizeof(szSocket), "Socket #%u", 0);
744	pProcessorInf->u8SocketDesignation = iStrNr++;
745	{
746	size_t cStr = strlen(szSocket) + 1;
747	CHECKSIZE(cStr);
748	memcpy(pszStr, szSocket, cStr);
749	pszStr += cStr;
750	}
751	pProcessorInf->u8ProcessorType = 0x03; /* Central Processor */
752	pProcessorInf->u8ProcessorFamily = 0xB1; /* Pentium III with Intel SpeedStep(TM) */
753	READCFGSTR(pProcessorInf->u8ProcessorManufacturer, DmiProcManufacturer);
754
755	pProcessorInf->u64ProcessorID = UINT64_C(0x0FEBFBFF00010676);
756	/* Ext Family ID = 0
757	* Ext Model ID = 2
758	* Processor Type = 0
759	* Family ID = 6
760	* Model = 7
761	* Stepping = 6
762	* Features: FPU, VME, DE, PSE, TSC, MSR, PAE, MCE, CX8,
763	* APIC, SEP, MTRR, PGE, MCA, CMOV, PAT, PSE-36,
764	* CFLSH, DS, ACPI, MMX, FXSR, SSE, SSE2, SS */
765	READCFGSTR(pProcessorInf->u8ProcessorVersion, DmiProcVersion);
766	pProcessorInf->u8Voltage = 0x02; /* 3.3V */
767	pProcessorInf->u16ExternalClock = 0x00; /* unknown */
768	pProcessorInf->u16MaxSpeed = 3000; /* 3GHz */
769	pProcessorInf->u16CurrentSpeed = 3000; /* 3GHz */
770	pProcessorInf->u8Status = RT_BIT(6) /* CPU socket populated */
771	\| RT_BIT(0) /* CPU enabled */
772	;
773	pProcessorInf->u8ProcessorUpgrade = 0x04; /* ZIF Socket */
774	pProcessorInf->u16L1CacheHandle = 0xFFFF; /* not specified */
775	pProcessorInf->u16L2CacheHandle = 0xFFFF; /* not specified */
776	pProcessorInf->u16L3CacheHandle = 0xFFFF; /* not specified */
777	pProcessorInf->u8SerialNumber = 0; /* not specified */
778	pProcessorInf->u8AssetTag = 0; /* not specified */
779	pProcessorInf->u8PartNumber = 0; /* not specified */
780	pProcessorInf->u8CoreCount = cCpus; /* */
781	pProcessorInf->u8CoreEnabled = cCpus;
782	pProcessorInf->u8ThreadCount = 1;
783	pProcessorInf->u16ProcessorCharacteristics
784	= RT_BIT(2); /* 64-bit capable */
785	pProcessorInf->u16ProcessorFamily2 = 0;
786	TERM_STRUCT;
787
788	/***************************************
789	* DMI Physical Memory Array (Type 16) *
790	***************************************/
791	uint64_t u64RamSize;
792	rc = CFGMR3QueryU64(pCfg, "RamSize", &u64RamSize);
793	if (RT_FAILURE (rc))
794	return PDMDEV_SET_ERROR(pDevIns, rc,
795	N_("Configuration error: Failed to read \"RamSize\""));
796
797	PDMIRAMARRAY pMemArray = (PDMIRAMARRAY)pszStr;
798	CHECKSIZE(sizeof(*pMemArray));
799	START_STRUCT(pMemArray);
800	if (fDmiExposeMemoryTable)
801	pMemArray->header.u8Type = 16; /* Physical Memory Array */
802	else
803	pMemArray->header.u8Type = 126; /* inactive structure */
804	pMemArray->header.u8Length = sizeof(*pMemArray);
805	pMemArray->header.u16Handle = 0x0005;
806	pMemArray->u8Location = 0x03; /* Motherboard */
807	pMemArray->u8Use = 0x03; /* System memory */
808	pMemArray->u8MemErrorCorrection = 0x01; /* Other */
809	pMemArray->u32MaxCapacity = (uint32_t)(u64RamSize / _1K); /* RAM size in K */
810	pMemArray->u16MemErrorHandle = 0xfffe; /* No error info structure */
811	pMemArray->u16NumberOfMemDevices = 1;
812	TERM_STRUCT;
813
814	/***************************************
815	* DMI Memory Device (Type 17) *
816	***************************************/
817	PDMIMEMORYDEV pMemDev = (PDMIMEMORYDEV)pszStr;
818	CHECKSIZE(sizeof(*pMemDev));
819	START_STRUCT(pMemDev);
820	if (fDmiExposeMemoryTable)
821	pMemDev->header.u8Type = 17; /* Memory Device */
822	else
823	pMemDev->header.u8Type = 126; /* inactive structure */
824	pMemDev->header.u8Length = sizeof(*pMemDev);
825	pMemDev->header.u16Handle = 0x0006;
826	pMemDev->u16PhysMemArrayHandle = 0x0005; /* handle of array we belong to */
827	pMemDev->u16MemErrHandle = 0xfffe; /* system doesn't provide this information */
828	pMemDev->u16TotalWidth = 0xffff; /* Unknown */
829	pMemDev->u16DataWidth = 0xffff; /* Unknown */
830	int16_t u16RamSizeM = (uint16_t)(u64RamSize / _1M);
831	if (u16RamSizeM == 0)
832	u16RamSizeM = 0x400; /* 1G */
833	pMemDev->u16Size = u16RamSizeM; /* RAM size */
834	pMemDev->u8FormFactor = 0x09; /* DIMM */
835	pMemDev->u8DeviceSet = 0x00; /* Not part of a device set */
836	READCFGSTRDEF(pMemDev->u8DeviceLocator, " ", "DIMM 0");
837	READCFGSTRDEF(pMemDev->u8BankLocator, " ", "Bank 0");
838	pMemDev->u8MemoryType = 0x03; /* DRAM */
839	pMemDev->u16TypeDetail = 0; /* Nothing special */
840	pMemDev->u16Speed = 1600; /* Unknown, shall be speed in MHz */
841	READCFGSTR(pMemDev->u8Manufacturer, DmiSystemVendor);
842	READCFGSTRDEF(pMemDev->u8SerialNumber, " ", "00000000");
843	READCFGSTRDEF(pMemDev->u8AssetTag, " ", "00000000");
844	READCFGSTRDEF(pMemDev->u8PartNumber, " ", "00000000");
845	pMemDev->u8Attributes = 0; /* Unknown */
846	TERM_STRUCT;
847
848	/*****************************
849	* DMI OEM strings (Type 11) *
850	*****************************/
851	PDMIOEMSTRINGS pOEMStrings = (PDMIOEMSTRINGS)pszStr;
852	CHECKSIZE(sizeof(*pOEMStrings));
853	START_STRUCT(pOEMStrings);
854	#ifdef VBOX_WITH_DMI_OEMSTRINGS
855	pOEMStrings->header.u8Type = 0xb; /* OEM Strings */
856	#else
857	pOEMStrings->header.u8Type = 126; /* inactive structure */
858	#endif
859	pOEMStrings->header.u8Length = sizeof(*pOEMStrings);
860	pOEMStrings->header.u16Handle = 0x0002;
861	pOEMStrings->u8Count = 2;
862
863	char szTmp[64];
864	RTStrPrintf(szTmp, sizeof(szTmp), "vboxVer_%u.%u.%u",
865	RTBldCfgVersionMajor(), RTBldCfgVersionMinor(), RTBldCfgVersionBuild());
866	READCFGSTRDEF(pOEMStrings->u8VBoxVersion, "DmiOEMVBoxVer", szTmp);
867	RTStrPrintf(szTmp, sizeof(szTmp), "vboxRev_%u", RTBldCfgRevision());
868	READCFGSTRDEF(pOEMStrings->u8VBoxRevision, "DmiOEMVBoxRev", szTmp);
869	TERM_STRUCT;
870
871	/* End-of-table marker - includes padding to account for fixed table size. */
872	PDMIHDR pEndOfTable = (PDMIHDR)pszStr;
873	pszStr = (char *)(pEndOfTable + 1);
874	pEndOfTable->u8Type = 0x7f;
875
876	pEndOfTable->u8Length = sizeof(*pEndOfTable);
877	pEndOfTable->u16Handle = 0xFEFF;
878	*pcbDmiTables = ((uintptr_t)pszStr - (uintptr_t)pTable) + 2;
879
880	/* If more fields are added here, fix the size check in READCFGSTR */
881
882	/* Success! */
883	break;
884	}
885
886	#undef READCFGSTR
887	#undef READCFGINT
888	#undef CHECKSIZE
889	return VINF_SUCCESS;
890	}
891
892	/**
893	* Construct the SMBIOS and DMI headers table pointer at VM construction and
894	* reset.
895	*
896	* @param pDevIns The device instance data.
897	*/
898	void FwCommonPlantSmbiosAndDmiHdrs(PPDMDEVINS pDevIns, uint16_t cbDmiTables)
899	{
900	struct
901	{
902	struct SMBIOSHDR smbios;
903	struct DMIMAINHDR dmi;
904	}
905	aBiosHeaders =
906	{
907	// The SMBIOS header
908	{
909	{ 0x5f, 0x53, 0x4d, 0x5f}, // "_SM_" signature
910	0x00, // checksum
911	0x1f, // EPS length, defined by standard
912	VBOX_SMBIOS_MAJOR_VER, // SMBIOS major version
913	VBOX_SMBIOS_MINOR_VER, // SMBIOS minor version
914	VBOX_SMBIOS_MAXSS, // Maximum structure size
915	0x00, // Entry point revision
916	{ 0x00, 0x00, 0x00, 0x00, 0x00 } // padding
917	},
918	// The DMI header
919	{
920	{ 0x5f, 0x44, 0x4d, 0x49, 0x5f }, // "_DMI_" signature
921	0x00, // checksum
922	0, // DMI tables length
923	VBOX_DMI_TABLE_BASE, // DMI tables base
924	VBOX_DMI_TABLE_ENTR, // DMI tables entries
925	VBOX_DMI_TABLE_VER, // DMI version
926	}
927	};
928
929	aBiosHeaders.dmi.u16TablesLength = cbDmiTables;
930	aBiosHeaders.smbios.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.smbios, sizeof(aBiosHeaders.smbios));
931	aBiosHeaders.dmi.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.dmi, sizeof(aBiosHeaders.dmi));
932
933	PDMDevHlpPhysWrite(pDevIns, 0xfe300, &aBiosHeaders, sizeof(aBiosHeaders));
934	}
935	AssertCompile(VBOX_DMI_TABLE_ENTR == 9);
936
937	/**
938	* Construct the MPS table for implanting as a ROM page.
939	*
940	* Only applicable if IOAPIC is active!
941	*
942	* See ``MultiProcessor Specification Version 1.4 (May 1997)'':
943	* ``1.3 Scope
944	* ...
945	* The hardware required to implement the MP specification is kept to a
946	* minimum, as follows:
947	* * One or more processors that are Intel architecture instruction set
948	* compatible, such as the CPUs in the Intel486 or Pentium processor
949	* family.
950	* * One or more APICs, such as the Intel 82489DX Advanced Programmable
951	* Interrupt Controller or the integrated APIC, such as that on the
952	* Intel Pentium 735\\90 and 815\\100 processors, together with a discrete
953	* I/O APIC unit.''
954	* and later:
955	* ``4.3.3 I/O APIC Entries
956	* The configuration table contains one or more entries for I/O APICs.
957	* ...
958	* I/O APIC FLAGS: EN 3:0 1 If zero, this I/O APIC is unusable, and the
959	* operating system should not attempt to access
960	* this I/O APIC.
961	* At least one I/O APIC must be enabled.''
962	*
963	* @param pDevIns The device instance data.
964	* @param pTable Where to write the table.
965	* @param cbMax The maximum size of the MPS table.
966	* @param cCpus The number of guest CPUs.
967	*/
968	void FwCommonPlantMpsTable(PPDMDEVINS pDevIns, uint8_t *pTable, unsigned cbMax, uint16_t cCpus)
969	{
970	/* configuration table */
971	PMPSCFGTBLHEADER pCfgTab = (MPSCFGTBLHEADER*)pTable;
972	memcpy(pCfgTab->au8Signature, "PCMP", 4);
973	pCfgTab->u8SpecRev = 4; /* 1.4 */
974	memcpy(pCfgTab->au8OemId, "VBOXCPU ", 8);
975	memcpy(pCfgTab->au8ProductId, "VirtualBox ", 12);
976	pCfgTab->u32OemTablePtr = 0;
977	pCfgTab->u16OemTableSize = 0;
978	pCfgTab->u16EntryCount = 0; /* Incremented as we go. */
979	pCfgTab->u32AddrLocalApic = 0xfee00000;
980	pCfgTab->u16ExtTableLength = 0;
981	pCfgTab->u8ExtTableChecksum = 0;
982	pCfgTab->u8Reserved = 0;
983
984	uint32_t u32Eax, u32Ebx, u32Ecx, u32Edx;
985	uint32_t u32CPUSignature = 0x0520; /* default: Pentium 100 */
986	uint32_t u32FeatureFlags = 0x0001; /* default: FPU */
987	PDMDevHlpGetCpuId(pDevIns, 0, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
988	if (u32Eax >= 1)
989	{
990	PDMDevHlpGetCpuId(pDevIns, 1, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
991	u32CPUSignature = u32Eax & 0xfff;
992	/* Local APIC will be enabled later so override it here. Since we provide
993	* an MP table we have an IOAPIC and therefore a Local APIC. */
994	u32FeatureFlags = u32Edx \| X86_CPUID_FEATURE_EDX_APIC;
995	}
996	/* Construct MPS table for each VCPU. */
997	PMPSPROCENTRY pProcEntry = (PMPSPROCENTRY)(pCfgTab+1);
998	for (int i = 0; i < cCpus; i++)
999	{
1000	pProcEntry->u8EntryType = 0; /* processor entry */
1001	pProcEntry->u8LocalApicId = i;
1002	pProcEntry->u8LocalApicVersion = 0x14;
1003	pProcEntry->u8CPUFlags = (i == 0 ? 2 /* bootstrap processor / : 0 / application processor /) \| 1 / enabled */;
1004	pProcEntry->u32CPUSignature = u32CPUSignature;
1005	pProcEntry->u32CPUFeatureFlags = u32FeatureFlags;
1006	pProcEntry->u32Reserved[0] =
1007	pProcEntry->u32Reserved[1] = 0;
1008	pProcEntry++;
1009	pCfgTab->u16EntryCount++;
1010	}
1011
1012	uint32_t iBusIdIsa = 0;
1013	uint32_t iBusIdPci0 = 1;
1014
1015	/* ISA bus */
1016	PMPSBUSENTRY pBusEntry = (PMPSBUSENTRY)pProcEntry;
1017	pBusEntry->u8EntryType = 1; /* bus entry */
1018	pBusEntry->u8BusId = iBusIdIsa; /* this ID is referenced by the interrupt entries */
1019	memcpy(pBusEntry->au8BusTypeStr, "ISA ", 6);
1020	pBusEntry++;
1021	pCfgTab->u16EntryCount++;
1022
1023	/* PCI bus */
1024	pBusEntry->u8EntryType = 1; /* bus entry */
1025	pBusEntry->u8BusId = iBusIdPci0; /* this ID can be referenced by the interrupt entries */
1026	memcpy(pBusEntry->au8BusTypeStr, "PCI ", 6);
1027	pCfgTab->u16EntryCount++;
1028
1029
1030	/* I/O-APIC.
1031	* MP spec: "The configuration table contains one or more entries for I/O APICs.
1032	* ... At least one I/O APIC must be enabled." */
1033	PMPSIOAPICENTRY pIOAPICEntry = (PMPSIOAPICENTRY)(pBusEntry+1);
1034	uint16_t iApicId = 0;
1035	pIOAPICEntry->u8EntryType = 2; /* I/O-APIC entry */
1036	pIOAPICEntry->u8Id = iApicId; /* this ID is referenced by the interrupt entries */
1037	pIOAPICEntry->u8Version = 0x11;
1038	pIOAPICEntry->u8Flags = 1 /* enable */;
1039	pIOAPICEntry->u32Addr = 0xfec00000;
1040	pCfgTab->u16EntryCount++;
1041
1042	/* Interrupt tables */
1043	/* Bus vectors */
1044	/* Note: The PIC is currently not routed to the I/O APIC. Therefore we skip
1045	* pin 0 on the I/O APIC.
1046	*/
1047	PMPSIOIRQENTRY pIrqEntry = (PMPSIOIRQENTRY)(pIOAPICEntry+1);
1048	for (int iPin = 1; iPin < 16; iPin++, pIrqEntry++)
1049	{
1050	pIrqEntry->u8EntryType = 3; /* I/O interrupt entry */
1051	/*
1052	* 0 - INT, vectored interrupt,
1053	* 3 - ExtINT, vectored interrupt provided by PIC
1054	* As we emulate system with both APIC and PIC, it's needed for their coexistence.
1055	*/
1056	pIrqEntry->u8Type = (iPin == 0) ? 3 : 0;
1057	pIrqEntry->u16Flags = 0; /* polarity of APIC I/O input signal = conforms to bus,
1058	trigger mode = conforms to bus */
1059	pIrqEntry->u8SrcBusId = iBusIdIsa; /* ISA bus */
1060	/* IRQ0 mapped to pin 2, other are identity mapped */
1061	/* If changing, also update PDMIsaSetIrq() and MADT */
1062	pIrqEntry->u8SrcBusIrq = (iPin == 2) ? 0 : iPin; /* IRQ on the bus */
1063	pIrqEntry->u8DstIOAPICId = iApicId; /* destination IO-APIC */
1064	pIrqEntry->u8DstIOAPICInt = iPin; /* pin on destination IO-APIC */
1065	pCfgTab->u16EntryCount++;
1066	}
1067	/* Local delivery */
1068	pIrqEntry->u8EntryType = 4; /* Local interrupt entry */
1069	pIrqEntry->u8Type = 3; /* ExtINT */
1070	pIrqEntry->u16Flags = (1 << 2) \| 1; /* active-high, edge-triggered */
1071	pIrqEntry->u8SrcBusId = iBusIdIsa;
1072	pIrqEntry->u8SrcBusIrq = 0;
1073	pIrqEntry->u8DstIOAPICId = 0xff;
1074	pIrqEntry->u8DstIOAPICInt = 0;
1075	pIrqEntry++;
1076	pCfgTab->u16EntryCount++;
1077	pIrqEntry->u8EntryType = 4; /* Local interrupt entry */
1078	pIrqEntry->u8Type = 1; /* NMI */
1079	pIrqEntry->u16Flags = (1 << 2) \| 1; /* active-high, edge-triggered */
1080	pIrqEntry->u8SrcBusId = iBusIdIsa;
1081	pIrqEntry->u8SrcBusIrq = 0;
1082	pIrqEntry->u8DstIOAPICId = 0xff;
1083	pIrqEntry->u8DstIOAPICInt = 1;
1084	pIrqEntry++;
1085	pCfgTab->u16EntryCount++;
1086
1087	pCfgTab->u16Length = (uint8_t*)pIrqEntry - pTable;
1088	pCfgTab->u8Checksum = fwCommonChecksum(pTable, pCfgTab->u16Length);
1089
1090	AssertMsg(pCfgTab->u16Length < cbMax,
1091	("VBOX_MPS_TABLE_SIZE=%d, maximum allowed size is %d",
1092	pCfgTab->u16Length, cbMax));
1093	}
1094
1095	/**
1096	* Construct the MPS table pointer at VM construction and reset.
1097	*
1098	* Only applicable if IOAPIC is active!
1099	*
1100	* @param pDevIns The device instance data.
1101	*/
1102	void FwCommonPlantMpsFloatPtr(PPDMDEVINS pDevIns)
1103	{
1104	MPSFLOATPTR floatPtr;
1105	floatPtr.au8Signature[0] = '_';
1106	floatPtr.au8Signature[1] = 'M';
1107	floatPtr.au8Signature[2] = 'P';
1108	floatPtr.au8Signature[3] = '_';
1109	floatPtr.u32MPSAddr = VBOX_MPS_TABLE_BASE;
1110	floatPtr.u8Length = 1; /* structure size in paragraphs */
1111	floatPtr.u8SpecRev = 4; /* MPS revision 1.4 */
1112	floatPtr.u8Checksum = 0;
1113	floatPtr.au8Feature[0] = 0;
1114	floatPtr.au8Feature[1] = 0;
1115	floatPtr.au8Feature[2] = 0;
1116	floatPtr.au8Feature[3] = 0;
1117	floatPtr.au8Feature[4] = 0;
1118	floatPtr.u8Checksum = fwCommonChecksum((uint8_t*)&floatPtr, 16);
1119	PDMDevHlpPhysWrite(pDevIns, 0x9fff0, &floatPtr, 16);
1120	}

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source: vbox/trunk/src/VBox/Devices/PC/DevFwCommon.cpp@ 44760

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