DevPcBios.cpp@ 12969

Last change on this file since 12969 was 12649, checked in by vboxsync, 16 years ago
DevPcBios: CMOS layout.
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1	/* $Id: DevPcBios.cpp 12649 2008-09-22 13:40:23Z vboxsync $ */
2	/** @file
3	* PC BIOS Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2008 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_DEV_PC_BIOS
26	#include <VBox/pdmdev.h>
27	#include <VBox/mm.h>
28
29	#include <VBox/log.h>
30	#include <iprt/assert.h>
31	#include <iprt/alloc.h>
32	#include <iprt/file.h>
33	#include <iprt/string.h>
34	#include <iprt/uuid.h>
35	#include <VBox/err.h>
36	#include <VBox/param.h>
37
38	#include "../Builtins.h"
39	#include "../Builtins2.h"
40	#include "DevPcBios.h"
41
42
43	/** @page pg_devbios_cmos_assign CMOS Assignments (BIOS)
44	*
45	* The BIOS uses a CMOS to store configuration data.
46	* It is currently used as follows:
47	*
48	* @verbatim
49	Base memory:
50	0x15
51	0x16
52	Extended memory:
53	0x17
54	0x18
55	0x30
56	0x31
57	Amount of memory above 16M:
58	0x34
59	0x35
60	Boot device (BOCHS bios specific):
61	0x3d
62	0x38
63	0x3c
64	PXE debug:
65	0x3f
66	Floppy drive type:
67	0x10
68	Equipment byte:
69	0x14
70	First HDD:
71	0x19
72	0x1e - 0x25
73	Second HDD:
74	0x1a
75	0x26 - 0x2d
76	Third HDD:
77	0x67 - 0x6e
78	Fourth HDD:
79	0x70 - 0x77
80	Extended:
81	0x12
82	First Sata HDD:
83	0x40 - 0x47
84	Second Sata HDD:
85	0x48 - 0x4f
86	Third Sata HDD:
87	0x50 - 0x57
88	Fourth Sata HDD:
89	0x58 - 0x5f
90	Number of CPUs:
91	0x60
92	RAM above 4G (in 64M units):
93	0x61 - 0x63
94	@endverbatim
95	*
96	* @todo Mark which bits are compatible with which BIOSes and
97	* which are our own definitions.
98	*
99	* @todo r=bird: Is the 0x61 - 0x63 range defined by AMI,
100	* PHOENIX or AWARD? If not I'd say 64MB units is a bit
101	* too big, besides it forces unnecessary math stuff onto
102	* the BIOS.
103	* nike: The way how values encoded are defined by Bochs/QEmu BIOS,
104	* although for them position in CMOS is different:
105	* 0x5b - 0x5c: RAM above 4G
106	* 0x5f: number of CPUs
107	* Unfortunately for us those positions in our CMOS are already taken
108	* by 4th SATA drive configuration.
109	*
110	*/
111
112
113	/*******************************************************************************
114	* Structures and Typedefs *
115	*******************************************************************************/
116
117	/**
118	* The boot device.
119	*/
120	typedef enum DEVPCBIOSBOOT
121	{
122	DEVPCBIOSBOOT_NONE,
123	DEVPCBIOSBOOT_FLOPPY,
124	DEVPCBIOSBOOT_HD,
125	DEVPCBIOSBOOT_DVD,
126	DEVPCBIOSBOOT_LAN
127	} DEVPCBIOSBOOT;
128
129	/**
130	* PC Bios instance data structure.
131	*/
132	typedef struct DEVPCBIOS
133	{
134	/** Pointer back to the device instance. */
135	PPDMDEVINS pDevIns;
136
137	/** Boot devices (ordered). */
138	DEVPCBIOSBOOT aenmBootDevice[4];
139	/** Ram Size (in bytes). */
140	uint64_t cbRam;
141	/** Bochs shutdown index. */
142	uint32_t iShutdown;
143	/** Floppy device. */
144	char *pszFDDevice;
145	/** Harddisk device. */
146	char *pszHDDevice;
147	/** Sata harddisk device. */
148	char *pszSataDevice;
149	/** LUN of the four harddisks which are emulated as IDE. */
150	uint32_t iSataHDLUN[4];
151	/** Bios message buffer. */
152	char szMsg[256];
153	/** Bios message buffer index. */
154	uint32_t iMsg;
155	/** The system BIOS ROM data. */
156	uint8_t *pu8PcBios;
157	/** The size of the system BIOS ROM. */
158	uint64_t cbPcBios;
159	/** The name of the BIOS ROM file. */
160	char *pszPcBiosFile;
161	/** The LAN boot ROM data. */
162	uint8_t *pu8LanBoot;
163	/** The name of the LAN boot ROM file. */
164	char *pszLanBootFile;
165	/** The DMI tables. */
166	uint8_t au8DMIPage[0x1000];
167	/** The boot countdown (in seconds). */
168	uint8_t uBootDelay;
169	/** I/O-APIC enabled? */
170	uint8_t u8IOAPIC;
171	/** PXE debug logging enabled? */
172	uint8_t u8PXEDebug;
173	/** Number of logical CPUs in guest */
174	uint16_t cCpus;
175	} DEVPCBIOS, *PDEVPCBIOS;
176
177	#pragma pack(1)
178
179	/** DMI header */
180	typedef struct DMIHDR
181	{
182	uint8_t u8Type;
183	uint8_t u8Length;
184	uint16_t u16Handle;
185	} *PDMIHDR;
186	AssertCompileSize(DMIHDR, 4);
187
188	/** DMI BIOS information */
189	typedef struct DMIBIOSINF
190	{
191	DMIHDR header;
192	uint8_t u8Vendor;
193	uint8_t u8Version;
194	uint16_t u16Start;
195	uint8_t u8Release;
196	uint8_t u8ROMSize;
197	uint64_t u64Characteristics;
198	uint8_t u8CharacteristicsByte1;
199	uint8_t u8CharacteristicsByte2;
200	uint8_t u8ReleaseMajor;
201	uint8_t u8ReleaseMinor;
202	uint8_t u8FirmwareMajor;
203	uint8_t u8FirmwareMinor;
204	} *PDMIBIOSINF;
205	AssertCompileSize(DMIBIOSINF, 0x18);
206
207	/** DMI system information */
208	typedef struct DMISYSTEMINF
209	{
210	DMIHDR header;
211	uint8_t u8Manufacturer;
212	uint8_t u8ProductName;
213	uint8_t u8Version;
214	uint8_t u8SerialNumber;
215	uint8_t au8Uuid[16];
216	uint8_t u8WakeupType;
217	uint8_t u8SKUNumber;
218	uint8_t u8Family;
219	} *PDMISYSTEMINF;
220	AssertCompileSize(DMISYSTEMINF, 0x1b);
221
222	/** MPS floating pointer structure */
223	typedef struct MPSFLOATPTR
224	{
225	uint8_t au8Signature[4];
226	uint32_t u32MPSAddr;
227	uint8_t u8Length;
228	uint8_t u8SpecRev;
229	uint8_t u8Checksum;
230	uint8_t au8Feature[5];
231	} *PMPSFLOATPTR;
232	AssertCompileSize(MPSFLOATPTR, 16);
233
234	/** MPS config table header */
235	typedef struct MPSCFGTBLHEADER
236	{
237	uint8_t au8Signature[4];
238	uint16_t u16Length;
239	uint8_t u8SpecRev;
240	uint8_t u8Checksum;
241	uint8_t au8OemId[8];
242	uint8_t au8ProductId[12];
243	uint32_t u32OemTablePtr;
244	uint16_t u16OemTableSize;
245	uint16_t u16EntryCount;
246	uint32_t u32AddrLocalApic;
247	uint16_t u16ExtTableLength;
248	uint8_t u8ExtTableChecksxum;
249	uint8_t u8Reserved;
250	} *PMPSCFGTBLHEADER;
251	AssertCompileSize(MPSCFGTBLHEADER, 0x2c);
252
253	/** MPS processor entry */
254	typedef struct MPSPROCENTRY
255	{
256	uint8_t u8EntryType;
257	uint8_t u8LocalApicId;
258	uint8_t u8LocalApicVersion;
259	uint8_t u8CPUFlags;
260	uint32_t u32CPUSignature;
261	uint32_t u32CPUFeatureFlags;
262	uint32_t u32Reserved[2];
263	} *PMPSPROCENTRY;
264	AssertCompileSize(MPSPROCENTRY, 20);
265
266	/** MPS bus entry */
267	typedef struct MPSBUSENTRY
268	{
269	uint8_t u8EntryType;
270	uint8_t u8BusId;
271	uint8_t au8BusTypeStr[6];
272	} *PMPSBUSENTRY;
273	AssertCompileSize(MPSBUSENTRY, 8);
274
275	/** MPS I/O-APIC entry */
276	typedef struct MPSIOAPICENTRY
277	{
278	uint8_t u8EntryType;
279	uint8_t u8Id;
280	uint8_t u8Version;
281	uint8_t u8Flags;
282	uint32_t u32Addr;
283	} *PMPSIOAPICENTRY;
284	AssertCompileSize(MPSIOAPICENTRY, 8);
285
286	/** MPS I/O-Interrupt entry */
287	typedef struct MPSIOINTERRUPTENTRY
288	{
289	uint8_t u8EntryType;
290	uint8_t u8Type;
291	uint16_t u16Flags;
292	uint8_t u8SrcBusId;
293	uint8_t u8SrcBusIrq;
294	uint8_t u8DstIOAPICId;
295	uint8_t u8DstIOAPICInt;
296	} *PMPSIOIRQENTRY;
297	AssertCompileSize(MPSIOINTERRUPTENTRY, 8);
298
299	#pragma pack()
300
301	/* Attempt to guess the LCHS disk geometry from the MS-DOS master boot
302	* record (partition table). */
303	static int biosGuessDiskLCHS(PPDMIBLOCK pBlock, PPDMMEDIAGEOMETRY pLCHSGeometry)
304	{
305	uint8_t aMBR[512], *p;
306	int rc;
307	uint32_t iEndHead, iEndSector, cLCHSCylinders, cLCHSHeads, cLCHSSectors;
308
309	if (!pBlock)
310	return VERR_INVALID_PARAMETER;
311	rc = pBlock->pfnRead(pBlock, 0, aMBR, sizeof(aMBR));
312	if (RT_FAILURE(rc))
313	return rc;
314	/* Test MBR magic number. */
315	if (aMBR[510] != 0x55 \|\| aMBR[511] != 0xaa)
316	return VERR_INVALID_PARAMETER;
317	for (uint32_t i = 0; i < 4; i++)
318	{
319	/* Figure out the start of a partition table entry. */
320	p = &aMBR[0x1be + i * 16];
321	iEndHead = p[5];
322	iEndSector = p[6] & 63;
323	if ((p[12] \| p[13] \| p[14] \| p[15]) && iEndSector & iEndHead)
324	{
325	/* Assumption: partition terminates on a cylinder boundary. */
326	cLCHSHeads = iEndHead + 1;
327	cLCHSSectors = iEndSector;
328	cLCHSCylinders = RT_MIN(1024, pBlock->pfnGetSize(pBlock) / (512 * cLCHSHeads * cLCHSSectors));
329	if (cLCHSCylinders >= 1)
330	{
331	pLCHSGeometry->cCylinders = cLCHSCylinders;
332	pLCHSGeometry->cHeads = cLCHSHeads;
333	pLCHSGeometry->cSectors = cLCHSSectors;
334	Log(("%s: LCHS=%d %d %d\n", __FUNCTION__, cLCHSCylinders, cLCHSHeads, cLCHSSectors));
335	return VINF_SUCCESS;
336	}
337	}
338	}
339	return VERR_INVALID_PARAMETER;
340	}
341
342
343	/**
344	* Write to CMOS memory.
345	* This is used by the init complete code.
346	*/
347	static void pcbiosCmosWrite(PPDMDEVINS pDevIns, int off, uint32_t u32Val)
348	{
349	Assert(off < 128);
350	Assert(u32Val < 256);
351
352	#if 1
353	int rc = PDMDevHlpCMOSWrite(pDevIns, off, u32Val);
354	AssertRC(rc);
355	#else
356	PVM pVM = PDMDevHlpGetVM(pDevIns);
357	IOMIOPortWrite(pVM, 0x70, off, 1);
358	IOMIOPortWrite(pVM, 0x71, u32Val, 1);
359	IOMIOPortWrite(pVM, 0x70, 0, 1);
360	#endif
361	}
362
363	/* -=-=-=-=-=-=- based on code from pc.c -=-=-=-=-=-=- */
364
365	/**
366	* Initializes the CMOS data for one harddisk.
367	*/
368	static void pcbiosCmosInitHardDisk(PPDMDEVINS pDevIns, int offType, int offInfo, PCPDMMEDIAGEOMETRY pLCHSGeometry)
369	{
370	Log2(("%s: offInfo=%#x: LCHS=%d/%d/%d\n", __FUNCTION__, offInfo, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
371	if (offType)
372	pcbiosCmosWrite(pDevIns, offType, 48);
373	/* Cylinders low */
374	pcbiosCmosWrite(pDevIns, offInfo + 0, RT_MIN(pLCHSGeometry->cCylinders, 1024) & 0xff);
375	/* Cylinders high */
376	pcbiosCmosWrite(pDevIns, offInfo + 1, RT_MIN(pLCHSGeometry->cCylinders, 1024) >> 8);
377	/* Heads */
378	pcbiosCmosWrite(pDevIns, offInfo + 2, pLCHSGeometry->cHeads);
379	/* Landing zone low */
380	pcbiosCmosWrite(pDevIns, offInfo + 3, 0xff);
381	/* Landing zone high */
382	pcbiosCmosWrite(pDevIns, offInfo + 4, 0xff);
383	/* Write precomp low */
384	pcbiosCmosWrite(pDevIns, offInfo + 5, 0xff);
385	/* Write precomp high */
386	pcbiosCmosWrite(pDevIns, offInfo + 6, 0xff);
387	/* Sectors */
388	pcbiosCmosWrite(pDevIns, offInfo + 7, pLCHSGeometry->cSectors);
389	}
390
391	/**
392	* Set logical CHS geometry for a hard disk
393	*
394	* @returns VBox status code.
395	* @param pBase Base interface for the device.
396	* @param pHardDisk The hard disk.
397	* @param pLCHSGeometry Where to store the geometry settings.
398	*/
399	static int setLogicalDiskGeometry(PPDMIBASE pBase, PPDMIBLOCKBIOS pHardDisk, PPDMMEDIAGEOMETRY pLCHSGeometry)
400	{
401	PDMMEDIAGEOMETRY LCHSGeometry;
402	int rc = VINF_SUCCESS;
403
404	rc = pHardDisk->pfnGetLCHSGeometry(pHardDisk, &LCHSGeometry);
405	if ( rc == VERR_PDM_GEOMETRY_NOT_SET
406	\|\| LCHSGeometry.cCylinders == 0
407	\|\| LCHSGeometry.cCylinders > 1024
408	\|\| LCHSGeometry.cHeads == 0
409	\|\| LCHSGeometry.cHeads > 255
410	\|\| LCHSGeometry.cSectors == 0
411	\|\| LCHSGeometry.cSectors > 63)
412	{
413	PPDMIBLOCK pBlock;
414	pBlock = (PPDMIBLOCK)pBase->pfnQueryInterface(pBase, PDMINTERFACE_BLOCK);
415	/* No LCHS geometry, autodetect and set. */
416	rc = biosGuessDiskLCHS(pBlock, &LCHSGeometry);
417	if (RT_FAILURE(rc))
418	{
419	/* Try if PCHS geometry works, otherwise fall back. */
420	rc = pHardDisk->pfnGetPCHSGeometry(pHardDisk, &LCHSGeometry);
421	}
422	if ( RT_FAILURE(rc)
423	\|\| LCHSGeometry.cCylinders == 0
424	\|\| LCHSGeometry.cCylinders > 1024
425	\|\| LCHSGeometry.cHeads == 0
426	\|\| LCHSGeometry.cHeads > 16
427	\|\| LCHSGeometry.cSectors == 0
428	\|\| LCHSGeometry.cSectors > 63)
429	{
430	uint64_t cSectors = pBlock->pfnGetSize(pBlock) / 512;
431	if (cSectors / 16 / 63 <= 1024)
432	{
433	LCHSGeometry.cCylinders = RT_MAX(cSectors / 16 / 63, 1);
434	LCHSGeometry.cHeads = 16;
435	}
436	else if (cSectors / 32 / 63 <= 1024)
437	{
438	LCHSGeometry.cCylinders = RT_MAX(cSectors / 32 / 63, 1);
439	LCHSGeometry.cHeads = 32;
440	}
441	else if (cSectors / 64 / 63 <= 1024)
442	{
443	LCHSGeometry.cCylinders = cSectors / 64 / 63;
444	LCHSGeometry.cHeads = 64;
445	}
446	else if (cSectors / 128 / 63 <= 1024)
447	{
448	LCHSGeometry.cCylinders = cSectors / 128 / 63;
449	LCHSGeometry.cHeads = 128;
450	}
451	else
452	{
453	LCHSGeometry.cCylinders = RT_MIN(cSectors / 255 / 63, 1024);
454	LCHSGeometry.cHeads = 255;
455	}
456	LCHSGeometry.cSectors = 63;
457
458	}
459	rc = pHardDisk->pfnSetLCHSGeometry(pHardDisk, &LCHSGeometry);
460	if (rc == VERR_VDI_IMAGE_READ_ONLY)
461	{
462	LogRel(("DevPcBios: ATA failed to update LCHS geometry\n"));
463	rc = VINF_SUCCESS;
464	}
465	}
466
467	*pLCHSGeometry = LCHSGeometry;
468
469	return rc;
470	}
471
472	/**
473	* Get BIOS boot code from enmBootDevice in order
474	*
475	* @todo r=bird: This is a rather silly function since the conversion is 1:1.
476	*/
477	static uint8_t getBiosBootCode(PDEVPCBIOS pThis, unsigned iOrder)
478	{
479	switch (pThis->aenmBootDevice[iOrder])
480	{
481	case DEVPCBIOSBOOT_NONE:
482	return 0;
483	case DEVPCBIOSBOOT_FLOPPY:
484	return 1;
485	case DEVPCBIOSBOOT_HD:
486	return 2;
487	case DEVPCBIOSBOOT_DVD:
488	return 3;
489	case DEVPCBIOSBOOT_LAN:
490	return 4;
491	default:
492	AssertMsgFailed(("aenmBootDevice[%d]=%d\n", iOrder, pThis->aenmBootDevice[iOrder]));
493	return 0;
494	}
495	}
496
497
498	/**
499	* Init complete notification.
500	* This routine will write information needed by the bios to the CMOS.
501	*
502	* @returns VBOX status code.
503	* @param pDevIns The device instance.
504	* @see http://www.brl.ntt.co.jp/people/takehiko/interrupt/CMOS.LST.txt for
505	* a description of standard and non-standard CMOS registers.
506	*/
507	static DECLCALLBACK(int) pcbiosInitComplete(PPDMDEVINS pDevIns)
508	{
509	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
510	uint32_t u32;
511	unsigned i;
512	PVM pVM = PDMDevHlpGetVM(pDevIns);
513	PPDMIBLOCKBIOS apHDs[4] = {0};
514	PPDMIBLOCKBIOS apFDs[2] = {0};
515	AssertRelease(pVM);
516	LogFlow(("pcbiosInitComplete:\n"));
517
518	/*
519	* Memory sizes.
520	*/
521	#ifdef VBOX_WITH_MORE_THAN_4GB
522	uint64_t cKBRam = pThis->cbRam / _1K;
523	uint64_t cKBAbove4GB = 0;
524	uint32_t cKBBelow4GB = cKBRam;
525	AssertRelease(cKBBelow4GB == cKBRam);
526	if (cKBRam > UINT32_C(0xe0000000)) /** @todo this limit must be picked up from CFGM and coordinated with MM/PGM! */
527	{
528	cKBAbove4GB = cKBRam - UINT32_C(0xe0000000);
529	cKBBelow4GB = UINT32_C(0xe0000000);
530	}
531	else
532	{
533	cKBAbove4GB = 0;
534	cKBBelow4GB = cKBRam;
535	}
536
537	/* base memory. */
538	u32 = cKBBelow4GB > 640 ? 640 : cKBBelow4GB;
539	pcbiosCmosWrite(pDevIns, 0x15, u32 & 0xff); /* 15h - Base Memory in K, Low Byte */
540	pcbiosCmosWrite(pDevIns, 0x16, u32 >> 8); /* 16h - Base Memory in K, High Byte */
541
542	/* Extended memory, up to 65MB */
543	u32 = cKBBelow4GB >= 65 * _1K ? 0xffff : (cKBBelow4GB - _1K);
544	pcbiosCmosWrite(pDevIns, 0x17, u32 & 0xff); /* 17h - Extended Memory in K, Low Byte */
545	pcbiosCmosWrite(pDevIns, 0x18, u32 >> 8); /* 18h - Extended Memory in K, High Byte */
546	pcbiosCmosWrite(pDevIns, 0x30, u32 & 0xff); /* 30h - Extended Memory in K, Low Byte */
547	pcbiosCmosWrite(pDevIns, 0x31, u32 >> 8); /* 31h - Extended Memory in K, High Byte */
548
549	/* Bochs BIOS specific? Anyway, it's the amount of memory above 16MB */
550	if (cKBBelow4GB > 16 * _1K)
551	{
552	u32 = (uint32_t)( (cKBBelow4GB - 16 * _1K) / 64 );
553	u32 = RT_MIN(u32, 0xffff);
554	}
555	else
556	u32 = 0;
557	pcbiosCmosWrite(pDevIns, 0x34, u32 & 0xff);
558	pcbiosCmosWrite(pDevIns, 0x35, u32 >> 8);
559
560	/* RAM above 4G, in 64MB units (needs discussing, see comments and @todos elsewhere). */
561	pcbiosCmosWrite(pDevIns, 0x61, cKBAbove4GB >> 16);
562	pcbiosCmosWrite(pDevIns, 0x62, cKBAbove4GB >> 24);
563	pcbiosCmosWrite(pDevIns, 0x63, cKBAbove4GB >> 32);
564
565	#else /* old code. */
566	/* base memory. */
567	u32 = pThis->cbRam > 640 ? 640 : (uint32_t)pThis->cbRam / _1K; /* <-- this test is wrong, but it doesn't matter since we never assign less than 1MB */
568	pcbiosCmosWrite(pDevIns, 0x15, u32 & 0xff); /* 15h - Base Memory in K, Low Byte */
569	pcbiosCmosWrite(pDevIns, 0x16, u32 >> 8); /* 16h - Base Memory in K, High Byte */
570
571	/* Extended memory, up to 65MB */
572	u32 = pThis->cbRam >= 65 * _1M ? 0xffff : ((uint32_t)pThis->cbRam - _1M) / _1K;
573	pcbiosCmosWrite(pDevIns, 0x17, u32 & 0xff); /* 17h - Extended Memory in K, Low Byte */
574	pcbiosCmosWrite(pDevIns, 0x18, u32 >> 8); /* 18h - Extended Memory in K, High Byte */
575	pcbiosCmosWrite(pDevIns, 0x30, u32 & 0xff); /* 30h - Extended Memory in K, Low Byte */
576	pcbiosCmosWrite(pDevIns, 0x31, u32 >> 8); /* 31h - Extended Memory in K, High Byte */
577
578	/* Bochs BIOS specific? Anyway, it's the amount of memory above 16MB */
579	if (pThis->cbRam > 16 * _1M)
580	{
581	u32 = (uint32_t)( (pThis->cbRam - 16 * _1M) / _64K );
582	u32 = RT_MIN(u32, 0xffff);
583	}
584	else
585	u32 = 0;
586	pcbiosCmosWrite(pDevIns, 0x34, u32 & 0xff);
587	pcbiosCmosWrite(pDevIns, 0x35, u32 >> 8);
588	#endif /* old code */
589
590	/*
591	* Number of CPUs.
592	*/
593	pcbiosCmosWrite(pDevIns, 0x60, pThis->cCpus & 0xff);
594
595	/*
596	* Bochs BIOS specifics - boot device.
597	* We do both new and old (ami-style) settings.
598	* See rombios.c line ~7215 (int19_function).
599	*/
600
601	uint8_t reg3d = getBiosBootCode(pThis, 0) \| (getBiosBootCode(pThis, 1) << 4);
602	uint8_t reg38 = /* pcbiosCmosRead(pDevIns, 0x38) \| */ getBiosBootCode(pThis, 2) << 4;
603	/* This is an extension. Bochs BIOS normally supports only 3 boot devices. */
604	uint8_t reg3c = getBiosBootCode(pThis, 3) \| (pThis->uBootDelay << 4);
605	pcbiosCmosWrite(pDevIns, 0x3d, reg3d);
606	pcbiosCmosWrite(pDevIns, 0x38, reg38);
607	pcbiosCmosWrite(pDevIns, 0x3c, reg3c);
608
609	/*
610	* PXE debug option.
611	*/
612	pcbiosCmosWrite(pDevIns, 0x3f, pThis->u8PXEDebug);
613
614	/*
615	* Floppy drive type.
616	*/
617	for (i = 0; i < RT_ELEMENTS(apFDs); i++)
618	{
619	PPDMIBASE pBase;
620	int rc = PDMR3QueryLun(pVM, pThis->pszFDDevice, 0, i, &pBase);
621	if (RT_SUCCESS(rc))
622	apFDs[i] = (PPDMIBLOCKBIOS)pBase->pfnQueryInterface(pBase, PDMINTERFACE_BLOCK_BIOS);
623	}
624	u32 = 0;
625	if (apFDs[0])
626	switch (apFDs[0]->pfnGetType(apFDs[0]))
627	{
628	case PDMBLOCKTYPE_FLOPPY_360: u32 \|= 1 << 4; break;
629	case PDMBLOCKTYPE_FLOPPY_1_20: u32 \|= 2 << 4; break;
630	case PDMBLOCKTYPE_FLOPPY_720: u32 \|= 3 << 4; break;
631	case PDMBLOCKTYPE_FLOPPY_1_44: u32 \|= 4 << 4; break;
632	case PDMBLOCKTYPE_FLOPPY_2_88: u32 \|= 5 << 4; break;
633	default: AssertFailed(); break;
634	}
635	if (apFDs[1])
636	switch (apFDs[1]->pfnGetType(apFDs[1]))
637	{
638	case PDMBLOCKTYPE_FLOPPY_360: u32 \|= 1; break;
639	case PDMBLOCKTYPE_FLOPPY_1_20: u32 \|= 2; break;
640	case PDMBLOCKTYPE_FLOPPY_720: u32 \|= 3; break;
641	case PDMBLOCKTYPE_FLOPPY_1_44: u32 \|= 4; break;
642	case PDMBLOCKTYPE_FLOPPY_2_88: u32 \|= 5; break;
643	default: AssertFailed(); break;
644	}
645	pcbiosCmosWrite(pDevIns, 0x10, u32); /* 10h - Floppy Drive Type */
646
647	/*
648	* Equipment byte.
649	*/
650	u32 = !!apFDs[0] + !!apFDs[1];
651	switch (u32)
652	{
653	case 1: u32 = 0x01; break; /* floppy installed, 2 drives. */
654	default:u32 = 0; break; /* floppy not installed. */
655	}
656	u32 \|= RT_BIT(1); /* math coprocessor installed */
657	u32 \|= RT_BIT(2); /* keyboard enabled (or mouse?) */
658	u32 \|= RT_BIT(3); /* display enabled (monitory type is 0, i.e. vga) */
659	pcbiosCmosWrite(pDevIns, 0x14, u32); /* 14h - Equipment Byte */
660
661	/*
662	* Harddisks.
663	*/
664	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
665	{
666	PPDMIBASE pBase;
667	int rc = PDMR3QueryLun(pVM, pThis->pszHDDevice, 0, i, &pBase);
668	if (RT_SUCCESS(rc))
669	apHDs[i] = (PPDMIBLOCKBIOS)pBase->pfnQueryInterface(pBase, PDMINTERFACE_BLOCK_BIOS);
670	if ( apHDs[i]
671	&& ( apHDs[i]->pfnGetType(apHDs[i]) != PDMBLOCKTYPE_HARD_DISK
672	\|\| !apHDs[i]->pfnIsVisible(apHDs[i])))
673	apHDs[i] = NULL;
674	if (apHDs[i])
675	{
676	PDMMEDIAGEOMETRY LCHSGeometry;
677	int rc = setLogicalDiskGeometry(pBase, apHDs[i], &LCHSGeometry);
678	AssertRC(rc);
679
680	if (i < 4)
681	{
682	/* Award BIOS extended drive types for first to fourth disk.
683	* Used by the BIOS for setting the logical geometry. */
684	int offType, offInfo;
685	switch (i)
686	{
687	case 0:
688	offType = 0x19;
689	offInfo = 0x1e;
690	break;
691	case 1:
692	offType = 0x1a;
693	offInfo = 0x26;
694	break;
695	case 2:
696	offType = 0x00;
697	offInfo = 0x67;
698	break;
699	case 3:
700	default:
701	offType = 0x00;
702	offInfo = 0x70;
703	break;
704	}
705	pcbiosCmosInitHardDisk(pDevIns, offType, offInfo,
706	&LCHSGeometry);
707	}
708	LogRel(("DevPcBios: ATA LUN#%d LCHS=%u/%u/%u\n", i, LCHSGeometry.cCylinders, LCHSGeometry.cHeads, LCHSGeometry.cSectors));
709	}
710	}
711
712	/* 0Fh means extended and points to 19h, 1Ah */
713	u32 = (apHDs[0] ? 0xf0 : 0) \| (apHDs[1] ? 0x0f : 0);
714	pcbiosCmosWrite(pDevIns, 0x12, u32);
715
716	/*
717	* Sata Harddisks.
718	*/
719	if (pThis->pszSataDevice)
720	{
721	/* Clear pointers to IDE controller. */
722	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
723	apHDs[i] = NULL;
724
725	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
726	{
727	PPDMIBASE pBase;
728	int rc = PDMR3QueryLun(pVM, pThis->pszSataDevice, 0, pThis->iSataHDLUN[i], &pBase);
729	if (RT_SUCCESS(rc))
730	apHDs[i] = (PPDMIBLOCKBIOS)pBase->pfnQueryInterface(pBase, PDMINTERFACE_BLOCK_BIOS);
731	if ( apHDs[i]
732	&& ( apHDs[i]->pfnGetType(apHDs[i]) != PDMBLOCKTYPE_HARD_DISK
733	\|\| !apHDs[i]->pfnIsVisible(apHDs[i])))
734	apHDs[i] = NULL;
735	if (apHDs[i])
736	{
737	PDMMEDIAGEOMETRY LCHSGeometry;
738	int rc = setLogicalDiskGeometry(pBase, apHDs[i], &LCHSGeometry);
739	AssertRC(rc);
740
741	if (i < 4)
742	{
743	/* Award BIOS extended drive types for first to fourth disk.
744	* Used by the BIOS for setting the logical geometry. */
745	int offInfo;
746	switch (i)
747	{
748	case 0:
749	offInfo = 0x40;
750	break;
751	case 1:
752	offInfo = 0x48;
753	break;
754	case 2:
755	offInfo = 0x50;
756	break;
757	case 3:
758	default:
759	offInfo = 0x58;
760	break;
761	}
762	pcbiosCmosInitHardDisk(pDevIns, 0x00, offInfo,
763	&LCHSGeometry);
764	}
765	LogRel(("DevPcBios: SATA LUN#%d LCHS=%u/%u/%u\n", i, LCHSGeometry.cCylinders, LCHSGeometry.cHeads, LCHSGeometry.cSectors));
766	}
767	}
768	}
769
770	LogFlow(("%s: returns VINF_SUCCESS\n", __FUNCTION__));
771	return VINF_SUCCESS;
772	}
773
774
775	/**
776	* Port I/O Handler for IN operations.
777	*
778	* @returns VBox status code.
779	*
780	* @param pDevIns The device instance.
781	* @param pvUser User argument - ignored.
782	* @param Port Port number used for the IN operation.
783	* @param pu32 Where to store the result.
784	* @param cb Number of bytes read.
785	*/
786	static DECLCALLBACK(int) pcbiosIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
787	{
788	NOREF(pDevIns);
789	NOREF(pvUser);
790	NOREF(Port);
791	NOREF(pu32);
792	NOREF(cb);
793	return VERR_IOM_IOPORT_UNUSED;
794	}
795
796
797	/**
798	* Port I/O Handler for OUT operations.
799	*
800	* @returns VBox status code.
801	*
802	* @param pDevIns The device instance.
803	* @param pvUser User argument - ignored.
804	* @param Port Port number used for the IN operation.
805	* @param u32 The value to output.
806	* @param cb The value size in bytes.
807	*/
808	static DECLCALLBACK(int) pcbiosIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
809	{
810	/*
811	* Bochs BIOS Panic
812	*/
813	if ( cb == 2
814	&& ( Port == 0x400
815	\|\| Port == 0x401))
816	{
817	Log(("pcbios: PC BIOS panic at rombios.c(%d)\n", u32));
818	AssertReleaseMsgFailed(("PC BIOS panic at rombios.c(%d)\n", u32));
819	return VERR_INTERNAL_ERROR;
820	}
821
822	/*
823	* Bochs BIOS char printing.
824	*/
825	if ( cb == 1
826	&& ( Port == 0x402
827	\|\| Port == 0x403))
828	{
829	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
830	/* The raw version. */
831	switch (u32)
832	{
833	case '\r': Log2(("pcbios: <return>\n")); break;
834	case '\n': Log2(("pcbios: <newline>\n")); break;
835	case '\t': Log2(("pcbios: <tab>\n")); break;
836	default: Log2(("pcbios: %c (%02x)\n", u32, u32)); break;
837	}
838
839	/* The readable, buffered version. */
840	if (u32 == '\n' \|\| u32 == '\r')
841	{
842	pThis->szMsg[pThis->iMsg] = '\0';
843	if (pThis->iMsg)
844	Log(("pcbios: %s\n", pThis->szMsg));
845	pThis->iMsg = 0;
846	}
847	else
848	{
849	if (pThis->iMsg >= sizeof(pThis->szMsg)-1)
850	{
851	pThis->szMsg[pThis->iMsg] = '\0';
852	Log(("pcbios: %s\n", pThis->szMsg));
853	pThis->iMsg = 0;
854	}
855	pThis->szMsg[pThis->iMsg] = (char )u32;
856	pThis->szMsg[++pThis->iMsg] = '\0';
857	}
858	return VINF_SUCCESS;
859	}
860
861	/*
862	* Bochs BIOS shutdown request.
863	*/
864	if (cb == 1 && Port == 0x8900)
865	{
866	static const unsigned char szShutdown[] = "Shutdown";
867	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
868	if (u32 == szShutdown[pThis->iShutdown])
869	{
870	pThis->iShutdown++;
871	if (pThis->iShutdown == 8)
872	{
873	pThis->iShutdown = 0;
874	LogRel(("8900h shutdown request.\n"));
875	return PDMDevHlpVMPowerOff(pDevIns);
876	}
877	}
878	else
879	pThis->iShutdown = 0;
880	return VINF_SUCCESS;
881	}
882
883	/* not in use. */
884	return VINF_SUCCESS;
885	}
886
887
888	/**
889	* Construct the DMI table.
890	*
891	* @returns VBox status code.
892	* @param pDevIns The device instance.
893	* @param pTable Where to create the DMI table.
894	* @param cbMax The max size of the DMI table.
895	* @param pUuid Pointer to the UUID to use if the DmiUuid
896	* configuration string isn't present.
897	* @param pCfgHandle The handle to our config node.
898	*/
899	static int pcbiosPlantDMITable(PPDMDEVINS pDevIns, uint8_t *pTable, unsigned cbMax, PRTUUID pUuid, PCFGMNODE pCfgHandle)
900	{
901	char pszStr = (char )pTable;
902	int iStrNr;
903	int rc;
904	char pszDmiBIOSVendor, pszDmiBIOSVersion, *pszDmiBIOSReleaseDate;
905	int iDmiBIOSReleaseMajor, iDmiBIOSReleaseMinor, iDmiBIOSFirmwareMajor, iDmiBIOSFirmwareMinor;
906	char pszDmiSystemVendor, pszDmiSystemProduct, pszDmiSystemVersion, pszDmiSystemSerial, pszDmiSystemUuid, pszDmiSystemFamily;
907
908	#define SETSTRING(memb, str) \
909	do { \
910	if (!str[0]) \
911	memb = 0; /* empty string */ \
912	else \
913	{ \
914	memb = iStrNr++; \
915	size_t _len = strlen(str) + 1; \
916	size_t _max = (size_t)(pszStr + _len - (char )pTable) + 5; / +1 for strtab terminator +4 for end-of-table entry */ \
917	if (_max > cbMax) \
918	return PDMDevHlpVMSetError(pDevIns, VERR_TOO_MUCH_DATA, RT_SRC_POS, \
919	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"), _max, cbMax); \
920	memcpy(pszStr, str, _len); \
921	pszStr += _len; \
922	} \
923	} while (0)
924	#define READCFGSTR(name, variable, default_value) \
925	do { \
926	rc = CFGMR3QueryStringAlloc(pCfgHandle, name, & variable); \
927	if (rc == VERR_CFGM_VALUE_NOT_FOUND) \
928	variable = MMR3HeapStrDup(PDMDevHlpGetVM(pDevIns), MM_TAG_CFGM, default_value); \
929	else if (RT_FAILURE(rc)) \
930	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, \
931	N_("Configuration error: Querying \"" name "\" as a string failed")); \
932	else if (!strcmp(variable, "<EMPTY>")) \
933	variable[0] = '\0'; \
934	} while (0)
935	#define READCFGINT(name, variable, default_value) \
936	do { \
937	rc = CFGMR3QueryS32(pCfgHandle, name, & variable); \
938	if (rc == VERR_CFGM_VALUE_NOT_FOUND) \
939	variable = default_value; \
940	else if (RT_FAILURE(rc)) \
941	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, \
942	N_("Configuration error: Querying \"" name "\" as a Int failed")); \
943	} while (0)
944
945
946	/*
947	* Don't change this information otherwise Windows guests will demand re-activation!
948	*/
949	READCFGSTR("DmiBIOSVendor", pszDmiBIOSVendor, "innotek GmbH");
950	READCFGSTR("DmiBIOSVersion", pszDmiBIOSVersion, "VirtualBox");
951	READCFGSTR("DmiBIOSReleaseDate", pszDmiBIOSReleaseDate, "12/01/2006");
952	READCFGINT("DmiBIOSReleaseMajor", iDmiBIOSReleaseMajor, 0);
953	READCFGINT("DmiBIOSReleaseMinor", iDmiBIOSReleaseMinor, 0);
954	READCFGINT("DmiBIOSFirmwareMajor", iDmiBIOSFirmwareMajor, 0);
955	READCFGINT("DmiBIOSFirmwareMinor", iDmiBIOSFirmwareMinor, 0);
956	READCFGSTR("DmiSystemVendor", pszDmiSystemVendor, "innotek GmbH");
957	READCFGSTR("DmiSystemProduct", pszDmiSystemProduct, "VirtualBox");
958	READCFGSTR("DmiSystemVersion", pszDmiSystemVersion, "1.2");
959	READCFGSTR("DmiSystemSerial", pszDmiSystemSerial, "0");
960	rc = CFGMR3QueryStringAlloc(pCfgHandle, "DmiSystemUuid", &pszDmiSystemUuid);
961	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
962	pszDmiSystemUuid = NULL;
963	else if (RT_FAILURE(rc))
964	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
965	N_("Configuration error: Querying \"DmiUuid\" as a string failed"));
966	READCFGSTR("DmiSystemFamily", pszDmiSystemFamily, "Virtual Machine");
967
968	/* DMI BIOS information */
969	PDMIBIOSINF pBIOSInf = (PDMIBIOSINF)pszStr;
970
971	pszStr = (char *)&pBIOSInf->u8ReleaseMajor;
972	pBIOSInf->header.u8Length = RT_OFFSETOF(DMIBIOSINF, u8ReleaseMajor);
973
974	/* don't set these fields by default for legacy compatibility */
975	if (iDmiBIOSReleaseMajor != 0 \|\| iDmiBIOSReleaseMinor != 0)
976	{
977	pszStr = (char *)&pBIOSInf->u8FirmwareMajor;
978	pBIOSInf->header.u8Length = RT_OFFSETOF(DMIBIOSINF, u8FirmwareMajor);
979	pBIOSInf->u8ReleaseMajor = iDmiBIOSReleaseMajor;
980	pBIOSInf->u8ReleaseMinor = iDmiBIOSReleaseMinor;
981	if (iDmiBIOSFirmwareMajor != 0 \|\| iDmiBIOSFirmwareMinor != 0)
982	{
983	pszStr = (char *)(pBIOSInf + 1);
984	pBIOSInf->header.u8Length = sizeof(DMIBIOSINF);
985	pBIOSInf->u8FirmwareMajor = iDmiBIOSFirmwareMajor;
986	pBIOSInf->u8FirmwareMinor = iDmiBIOSFirmwareMinor;
987	}
988	}
989
990	iStrNr = 1;
991	pBIOSInf->header.u8Type = 0; /* BIOS Information */
992	pBIOSInf->header.u16Handle = 0x0000;
993	SETSTRING(pBIOSInf->u8Vendor, pszDmiBIOSVendor);
994	SETSTRING(pBIOSInf->u8Version, pszDmiBIOSVersion);
995	pBIOSInf->u16Start = 0xE000;
996	SETSTRING(pBIOSInf->u8Release, pszDmiBIOSReleaseDate);
997	pBIOSInf->u8ROMSize = 1; /* 128K */
998	pBIOSInf->u64Characteristics = RT_BIT(4) /* ISA is supported */
999	\| RT_BIT(7) /* PCI is supported */
1000	\| RT_BIT(15) /* Boot from CD is supported */
1001	\| RT_BIT(16) /* Selectable Boot is supported */
1002	\| RT_BIT(27) /* Int 9h, 8042 Keyboard services supported */
1003	\| RT_BIT(30) /* Int 10h, CGA/Mono Video Services supported */
1004	/* any more?? */
1005	;
1006	pBIOSInf->u8CharacteristicsByte1 = RT_BIT(0) /* ACPI is supported */
1007	/* any more?? */
1008	;
1009	pBIOSInf->u8CharacteristicsByte2 = 0
1010	/* any more?? */
1011	;
1012	*pszStr++ = '\0';
1013
1014	/* DMI system information */
1015	PDMISYSTEMINF pSystemInf = (PDMISYSTEMINF)pszStr;
1016	pszStr = (char *)(pSystemInf + 1);
1017	iStrNr = 1;
1018	pSystemInf->header.u8Type = 1; /* System Information */
1019	pSystemInf->header.u8Length = sizeof(*pSystemInf);
1020	pSystemInf->header.u16Handle = 0x0001;
1021	SETSTRING(pSystemInf->u8Manufacturer, pszDmiSystemVendor);
1022	SETSTRING(pSystemInf->u8ProductName, pszDmiSystemProduct);
1023	SETSTRING(pSystemInf->u8Version, pszDmiSystemVersion);
1024	SETSTRING(pSystemInf->u8SerialNumber, pszDmiSystemSerial);
1025
1026	RTUUID uuid;
1027	if (pszDmiSystemUuid)
1028	{
1029	int rc = RTUuidFromStr(&uuid, pszDmiSystemUuid);
1030	if (RT_FAILURE(rc))
1031	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1032	N_("Invalid UUID for DMI tables specified"));
1033	uuid.Gen.u32TimeLow = RT_H2BE_U32(uuid.Gen.u32TimeLow);
1034	uuid.Gen.u16TimeMid = RT_H2BE_U16(uuid.Gen.u16TimeMid);
1035	uuid.Gen.u16TimeHiAndVersion = RT_H2BE_U16(uuid.Gen.u16TimeHiAndVersion);
1036	pUuid = &uuid;
1037	}
1038	memcpy(pSystemInf->au8Uuid, pUuid, sizeof(RTUUID));
1039
1040	pSystemInf->u8WakeupType = 6; /* Power Switch */
1041	pSystemInf->u8SKUNumber = 0;
1042	SETSTRING(pSystemInf->u8Family, pszDmiSystemFamily);
1043	*pszStr++ = '\0';
1044
1045	/* End-of-table marker - includes padding to account for fixed table size. */
1046	PDMIHDR pEndOfTable = (PDMIHDR)pszStr;
1047	pEndOfTable->u8Type = 0x7f;
1048	pEndOfTable->u8Length = cbMax - ((char )pszStr - (char )pTable) - 2;
1049	pEndOfTable->u16Handle = 0xFFFF;
1050
1051	/* If more fields are added here, fix the size check in SETSTRING */
1052
1053	#undef SETSTRING
1054	#undef READCFG
1055
1056	MMR3HeapFree(pszDmiBIOSVendor);
1057	MMR3HeapFree(pszDmiBIOSVersion);
1058	MMR3HeapFree(pszDmiBIOSReleaseDate);
1059	MMR3HeapFree(pszDmiSystemVendor);
1060	MMR3HeapFree(pszDmiSystemProduct);
1061	MMR3HeapFree(pszDmiSystemVersion);
1062	MMR3HeapFree(pszDmiSystemSerial);
1063	MMR3HeapFree(pszDmiSystemUuid);
1064	MMR3HeapFree(pszDmiSystemFamily);
1065
1066	return VINF_SUCCESS;
1067	}
1068	AssertCompile(VBOX_DMI_TABLE_ENTR == 3);
1069
1070
1071	/**
1072	* Calculate a simple checksum for the MPS table.
1073	*
1074	* @param data data
1075	* @param len size of data
1076	*/
1077	static uint8_t pcbiosChecksum(const uint8_t * const au8Data, uint32_t u32Length)
1078	{
1079	uint8_t u8Sum = 0;
1080	for (size_t i = 0; i < u32Length; ++i)
1081	u8Sum += au8Data[i];
1082	return -u8Sum;
1083	}
1084
1085
1086	/**
1087	* Construct the MPS table. Only applicable if IOAPIC is active!
1088	*
1089	* See ``MultiProcessor Specificatiton Version 1.4 (May 1997)'':
1090	* ``1.3 Scope
1091	* ...
1092	* The hardware required to implement the MP specification is kept to a
1093	* minimum, as follows:
1094	* * One or more processors that are Intel architecture instruction set
1095	* compatible, such as the CPUs in the Intel486 or Pentium processor
1096	* family.
1097	* * One or more APICs, such as the Intel 82489DX Advanced Programmable
1098	* Interrupt Controller or the integrated APIC, such as that on the
1099	* Intel Pentium 735\90 and 815\100 processors, together with a discrete
1100	* I/O APIC unit.''
1101	* and later:
1102	* ``4.3.3 I/O APIC Entries
1103	* The configuration table contains one or more entries for I/O APICs.
1104	* ...
1105	* I/O APIC FLAGS: EN 3:0 1 If zero, this I/O APIC is unusable, and the
1106	* operating system should not attempt to access
1107	* this I/O APIC.
1108	* At least one I/O APIC must be enabled.''
1109	*
1110	* @param pDevIns The device instance data.
1111	* @param addr physical address in guest memory.
1112	*/
1113	static void pcbiosPlantMPStable(PPDMDEVINS pDevIns, uint8_t *pTable, uint16_t numCpus)
1114	{
1115	/* configuration table */
1116	PMPSCFGTBLHEADER pCfgTab = (MPSCFGTBLHEADER*)pTable;
1117	memcpy(pCfgTab->au8Signature, "PCMP", 4);
1118	pCfgTab->u8SpecRev = 4; /* 1.4 */
1119	memcpy(pCfgTab->au8OemId, "VBOXCPU ", 8);
1120	memcpy(pCfgTab->au8ProductId, "VirtualBox ", 12);
1121	pCfgTab->u32OemTablePtr = 0;
1122	pCfgTab->u16OemTableSize = 0;
1123	pCfgTab->u16EntryCount = numCpus /* Processors */
1124	+ 1 /* ISA Bus */
1125	+ 1 /* I/O-APIC */
1126	+ 16 /* Interrupts */;
1127	pCfgTab->u32AddrLocalApic = 0xfee00000;
1128	pCfgTab->u16ExtTableLength = 0;
1129	pCfgTab->u8ExtTableChecksxum = 0;
1130	pCfgTab->u8Reserved = 0;
1131
1132	uint32_t u32Eax, u32Ebx, u32Ecx, u32Edx;
1133	uint32_t u32CPUSignature = 0x0520; /* default: Pentium 100 */
1134	uint32_t u32FeatureFlags = 0x0001; /* default: FPU */
1135	PDMDevHlpGetCpuId(pDevIns, 0, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
1136	if (u32Eax >= 1)
1137	{
1138	PDMDevHlpGetCpuId(pDevIns, 1, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
1139	u32CPUSignature = u32Eax & 0xfff;
1140	/* Local APIC will be enabled later so override it here. Since we provide
1141	* an MP table we have an IOAPIC and therefore a Local APIC. */
1142	u32FeatureFlags = u32Edx \| X86_CPUID_FEATURE_EDX_APIC;
1143	}
1144	#ifdef VBOX_WITH_SMP_GUESTS
1145	PMPSPROCENTRY pProcEntry = (PMPSPROCENTRY)(pCfgTab+1);
1146	for (int i = 0; i<numCpus; i++)
1147	{
1148	pProcEntry->u8EntryType = 0; /* processor entry */
1149	pProcEntry->u8LocalApicId = i;
1150	pProcEntry->u8LocalApicVersion = 0x11;
1151	pProcEntry->u8CPUFlags = (i == 0 ? 2 /* bootstrap processor / : 0 / application processor /) \| 1 / enabled */;
1152	pProcEntry->u32CPUSignature = u32CPUSignature;
1153	pProcEntry->u32CPUFeatureFlags = u32FeatureFlags;
1154	pProcEntry->u32Reserved[0] =
1155	pProcEntry->u32Reserved[1] = 0;
1156	pProcEntry++;
1157	}
1158	#else
1159	/* one processor so far */
1160	PMPSPROCENTRY pProcEntry = (PMPSPROCENTRY)(pCfgTab+1);
1161	pProcEntry->u8EntryType = 0; /* processor entry */
1162	pProcEntry->u8LocalApicId = 0;
1163	pProcEntry->u8LocalApicVersion = 0x11;
1164	pProcEntry->u8CPUFlags = 2 /* bootstrap processor / \| 1 / enabled */;
1165	pProcEntry->u32CPUSignature = u32CPUSignature;
1166	pProcEntry->u32CPUFeatureFlags = u32FeatureFlags;
1167	pProcEntry->u32Reserved[0] =
1168	pProcEntry->u32Reserved[1] = 0;
1169	#endif
1170
1171	/* ISA bus */
1172	PMPSBUSENTRY pBusEntry = (PMPSBUSENTRY)(pProcEntry+1);
1173	pBusEntry->u8EntryType = 1; /* bus entry */
1174	pBusEntry->u8BusId = 0; /* this ID is referenced by the interrupt entries */
1175	memcpy(pBusEntry->au8BusTypeStr, "ISA ", 6);
1176
1177	/* PCI bus? */
1178
1179	/* I/O-APIC.
1180	* MP spec: "The configuration table contains one or more entries for I/O APICs.
1181	* ... At least one I/O APIC must be enabled." */
1182	PMPSIOAPICENTRY pIOAPICEntry = (PMPSIOAPICENTRY)(pBusEntry+1);
1183	uint16_t apicId = numCpus;
1184	pIOAPICEntry->u8EntryType = 2; /* I/O-APIC entry */
1185	pIOAPICEntry->u8Id = apicId; /* this ID is referenced by the interrupt entries */
1186	pIOAPICEntry->u8Version = 0x11;
1187	pIOAPICEntry->u8Flags = 1 /* enable */;
1188	pIOAPICEntry->u32Addr = 0xfec00000;
1189
1190	PMPSIOIRQENTRY pIrqEntry = (PMPSIOIRQENTRY)(pIOAPICEntry+1);
1191	for (int i = 0; i < 16; i++, pIrqEntry++)
1192	{
1193	pIrqEntry->u8EntryType = 3; /* I/O interrupt entry */
1194	pIrqEntry->u8Type = 0; /* INT, vectored interrupt */
1195	pIrqEntry->u16Flags = 0; /* polarity of APIC I/O input signal = conforms to bus,
1196	trigger mode = conforms to bus */
1197	pIrqEntry->u8SrcBusId = 0; /* ISA bus */
1198	pIrqEntry->u8SrcBusIrq = i;
1199	pIrqEntry->u8DstIOAPICId = apicId;
1200	pIrqEntry->u8DstIOAPICInt = i;
1201	}
1202
1203	pCfgTab->u16Length = (uint8_t*)pIrqEntry - pTable;
1204	pCfgTab->u8Checksum = pcbiosChecksum(pTable, pCfgTab->u16Length);
1205
1206	AssertMsg(pCfgTab->u16Length < 0x1000 - 0x100,
1207	("VBOX_MPS_TABLE_SIZE=%d, maximum allowed size is %d",
1208	pCfgTab->u16Length, 0x1000-0x100));
1209
1210	MPSFLOATPTR floatPtr;
1211	floatPtr.au8Signature[0] = '_';
1212	floatPtr.au8Signature[1] = 'M';
1213	floatPtr.au8Signature[2] = 'P';
1214	floatPtr.au8Signature[3] = '_';
1215	floatPtr.u32MPSAddr = VBOX_MPS_TABLE_BASE;
1216	floatPtr.u8Length = 1; /* structure size in paragraphs */
1217	floatPtr.u8SpecRev = 4; /* MPS revision 1.4 */
1218	floatPtr.u8Checksum = 0;
1219	floatPtr.au8Feature[0] = 0;
1220	floatPtr.au8Feature[1] = 0;
1221	floatPtr.au8Feature[2] = 0;
1222	floatPtr.au8Feature[3] = 0;
1223	floatPtr.au8Feature[4] = 0;
1224	floatPtr.u8Checksum = pcbiosChecksum((uint8_t*)&floatPtr, 16);
1225	PDMDevHlpPhysWrite (pDevIns, 0x9fff0, &floatPtr, 16);
1226	}
1227
1228
1229	/**
1230	* Reset notification.
1231	*
1232	* @returns VBox status.
1233	* @param pDevIns The device instance data.
1234	*/
1235	static DECLCALLBACK(void) pcbiosReset(PPDMDEVINS pDevIns)
1236	{
1237	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
1238	LogFlow(("pcbiosReset:\n"));
1239
1240	if (pThis->u8IOAPIC)
1241	pcbiosPlantMPStable(pDevIns, pThis->au8DMIPage + VBOX_DMI_TABLE_SIZE, pThis->cCpus);
1242	}
1243
1244
1245	/**
1246	* Destruct a device instance.
1247	*
1248	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
1249	* resources can be freed correctly.
1250	*
1251	* @param pDevIns The device instance data.
1252	*/
1253	static DECLCALLBACK(int) pcbiosDestruct(PPDMDEVINS pDevIns)
1254	{
1255	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
1256	LogFlow(("pcbiosDestruct:\n"));
1257
1258	/*
1259	* Free MM heap pointers.
1260	*/
1261	if (pThis->pu8PcBios)
1262	{
1263	MMR3HeapFree(pThis->pu8PcBios);
1264	pThis->pu8PcBios = NULL;
1265	}
1266
1267	if (pThis->pszPcBiosFile)
1268	{
1269	MMR3HeapFree(pThis->pszPcBiosFile);
1270	pThis->pszPcBiosFile = NULL;
1271	}
1272
1273	if (pThis->pu8LanBoot)
1274	{
1275	MMR3HeapFree(pThis->pu8LanBoot);
1276	pThis->pu8LanBoot = NULL;
1277	}
1278
1279	if (pThis->pszLanBootFile)
1280	{
1281	MMR3HeapFree(pThis->pszLanBootFile);
1282	pThis->pszLanBootFile = NULL;
1283	}
1284
1285	return VINF_SUCCESS;
1286	}
1287
1288
1289	/**
1290	* Convert config value to DEVPCBIOSBOOT.
1291	*
1292	* @returns VBox status code.
1293	* @param pCfgHandle Configuration handle.
1294	* @param pszParam The name of the value to read.
1295	* @param penmBoot Where to store the boot method.
1296	*/
1297	static int pcbiosBootFromCfg(PPDMDEVINS pDevIns, PCFGMNODE pCfgHandle, const char pszParam, DEVPCBIOSBOOT penmBoot)
1298	{
1299	char *psz;
1300	int rc = CFGMR3QueryStringAlloc(pCfgHandle, pszParam, &psz);
1301	if (RT_FAILURE(rc))
1302	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1303	N_("Configuration error: Querying \"%s\" as a string failed"),
1304	pszParam);
1305	if (!strcmp(psz, "DVD") \|\| !strcmp(psz, "CDROM"))
1306	*penmBoot = DEVPCBIOSBOOT_DVD;
1307	else if (!strcmp(psz, "IDE"))
1308	*penmBoot = DEVPCBIOSBOOT_HD;
1309	else if (!strcmp(psz, "FLOPPY"))
1310	*penmBoot = DEVPCBIOSBOOT_FLOPPY;
1311	else if (!strcmp(psz, "LAN"))
1312	*penmBoot = DEVPCBIOSBOOT_LAN;
1313	else if (!strcmp(psz, "NONE"))
1314	*penmBoot = DEVPCBIOSBOOT_NONE;
1315	else
1316	{
1317	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1318	N_("Configuration error: The \"%s\" value \"%s\" is unknown"),
1319	pszParam, psz);
1320	rc = VERR_INTERNAL_ERROR;
1321	}
1322	MMR3HeapFree(psz);
1323	return rc;
1324	}
1325
1326	/**
1327	* Construct a device instance for a VM.
1328	*
1329	* @returns VBox status.
1330	* @param pDevIns The device instance data.
1331	* If the registration structure is needed, pDevIns->pDevReg points to it.
1332	* @param iInstance Instance number. Use this to figure out which registers and such to use.
1333	* The device number is also found in pDevIns->iInstance, but since it's
1334	* likely to be freqently used PDM passes it as parameter.
1335	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
1336	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
1337	* iInstance it's expected to be used a bit in this function.
1338	*/
1339	static DECLCALLBACK(int) pcbiosConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle)
1340	{
1341	unsigned i;
1342	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
1343	int rc;
1344	int cb;
1345
1346	Assert(iInstance == 0);
1347
1348	/*
1349	* Validate configuration.
1350	*/
1351	if (!CFGMR3AreValuesValid(pCfgHandle,
1352	"BootDevice0\0"
1353	"BootDevice1\0"
1354	"BootDevice2\0"
1355	"BootDevice3\0"
1356	"RamSize\0"
1357	"HardDiskDevice\0"
1358	"SataHardDiskDevice\0"
1359	"SataPrimaryMasterLUN\0"
1360	"SataPrimarySlaveLUN\0"
1361	"SataSecondaryMasterLUN\0"
1362	"SataSecondarySlaveLUN\0"
1363	"FloppyDevice\0"
1364	"DelayBoot\0"
1365	"BiosRom\0"
1366	"LanBootRom\0"
1367	"PXEDebug\0"
1368	"UUID\0"
1369	"IOAPIC\0"
1370	"NumCPUs\0"
1371	"DmiBIOSVendor\0"
1372	"DmiBIOSVersion\0"
1373	"DmiBIOSReleaseDate\0"
1374	"DmiBIOSReleaseMajor\0"
1375	"DmiBIOSReleaseMinor\0"
1376	"DmiBIOSFirmwareMajor\0"
1377	"DmiBIOSFirmwareMinor\0"
1378	"DmiSystemFamily\0"
1379	"DmiSystemProduct\0"
1380	"DmiSystemSerial\0"
1381	"DmiSystemUuid\0"
1382	"DmiSystemVendor\0"
1383	"DmiSystemVersion\0"))
1384	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
1385	N_("Invalid configuraton for device pcbios device"));
1386
1387	/*
1388	* Init the data.
1389	*/
1390	rc = CFGMR3QueryU64(pCfgHandle, "RamSize", &pThis->cbRam);
1391	if (RT_FAILURE(rc))
1392	return PDMDEV_SET_ERROR(pDevIns, rc,
1393	N_("Configuration error: Querying \"RamSize\" as integer failed"));
1394
1395	rc = CFGMR3QueryU16Def(pCfgHandle, "NumCPUs", &pThis->cCpus, 1);
1396	if (RT_FAILURE(rc))
1397	return PDMDEV_SET_ERROR(pDevIns, rc,
1398	N_("Configuration error: Querying \"NumCPUs\" as integer failed"));
1399
1400	#ifdef VBOX_WITH_SMP_GUESTS
1401	LogRel(("[SMP] BIOS with %d CPUs\n", pThis->cCpus));
1402	#else
1403	/* @todo: move this check up in configuration chain */
1404	if (pThis->cCpus != 1)
1405	{
1406	LogRel(("WARNING: guest SMP not supported in this build, going UP\n"));
1407	pThis->cCpus = 1;
1408	}
1409	#endif
1410
1411	rc = CFGMR3QueryU8Def(pCfgHandle, "IOAPIC", &pThis->u8IOAPIC, 1);
1412	if (RT_FAILURE (rc))
1413	return PDMDEV_SET_ERROR(pDevIns, rc,
1414	N_("Configuration error: Failed to read \"IOAPIC\""));
1415
1416	static const char * const s_apszBootDevices[] = { "BootDevice0", "BootDevice1", "BootDevice2", "BootDevice3" };
1417	Assert(RT_ELEMENTS(s_apszBootDevices) == RT_ELEMENTS(pThis->aenmBootDevice));
1418	for (i = 0; i < RT_ELEMENTS(pThis->aenmBootDevice); i++)
1419	{
1420	rc = pcbiosBootFromCfg(pDevIns, pCfgHandle, s_apszBootDevices[i], &pThis->aenmBootDevice[i]);
1421	if (RT_FAILURE(rc))
1422	return rc;
1423	}
1424
1425	rc = CFGMR3QueryStringAlloc(pCfgHandle, "HardDiskDevice", &pThis->pszHDDevice);
1426	if (RT_FAILURE(rc))
1427	return PDMDEV_SET_ERROR(pDevIns, rc,
1428	N_("Configuration error: Querying \"HardDiskDevice\" as a string failed"));
1429
1430	rc = CFGMR3QueryStringAlloc(pCfgHandle, "FloppyDevice", &pThis->pszFDDevice);
1431	if (RT_FAILURE(rc))
1432	return PDMDEV_SET_ERROR(pDevIns, rc,
1433	N_("Configuration error: Querying \"FloppyDevice\" as a string failed"));
1434
1435	rc = CFGMR3QueryStringAlloc(pCfgHandle, "SataHardDiskDevice", &pThis->pszSataDevice);
1436	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1437	pThis->pszSataDevice = NULL;
1438	else if (RT_FAILURE(rc))
1439	return PDMDEV_SET_ERROR(pDevIns, rc,
1440	N_("Configuration error: Querying \"SataHardDiskDevice\" as a string failed"));
1441
1442	if (pThis->pszSataDevice)
1443	{
1444	static const char * const s_apszSataDisks[] =
1445	{ "SataPrimaryMasterLUN", "SataPrimarySlaveLUN", "SataSecondaryMasterLUN", "SataSecondarySlaveLUN" };
1446	Assert(RT_ELEMENTS(s_apszSataDisks) == RT_ELEMENTS(pThis->iSataHDLUN));
1447	for (i = 0; i < RT_ELEMENTS(pThis->iSataHDLUN); i++)
1448	{
1449	rc = CFGMR3QueryU32(pCfgHandle, s_apszSataDisks[i], &pThis->iSataHDLUN[i]);
1450	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1451	pThis->iSataHDLUN[i] = i;
1452	else if (RT_FAILURE(rc))
1453	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1454	N_("Configuration error: Querying \"%s\" as a string failed"), s_apszSataDisks);
1455	}
1456	}
1457	/*
1458	* Register I/O Ports and PC BIOS.
1459	*/
1460	rc = PDMDevHlpIOPortRegister(pDevIns, 0x400, 4, NULL, pcbiosIOPortWrite, pcbiosIOPortRead,
1461	NULL, NULL, "Bochs PC BIOS - Panic & Debug");
1462	if (RT_FAILURE(rc))
1463	return rc;
1464	rc = PDMDevHlpIOPortRegister(pDevIns, 0x8900, 1, NULL, pcbiosIOPortWrite, pcbiosIOPortRead,
1465	NULL, NULL, "Bochs PC BIOS - Shutdown");
1466	if (RT_FAILURE(rc))
1467	return rc;
1468
1469	/*
1470	* Query the machine's UUID for SMBIOS/DMI use.
1471	*/
1472	RTUUID uuid;
1473	rc = CFGMR3QueryBytes(pCfgHandle, "UUID", &uuid, sizeof(uuid));
1474	if (RT_FAILURE(rc))
1475	return PDMDEV_SET_ERROR(pDevIns, rc,
1476	N_("Configuration error: Querying \"UUID\" failed"));
1477
1478
1479	/* Convert the UUID to network byte order. Not entirely straightforward as parts are MSB already... */
1480	uuid.Gen.u32TimeLow = RT_H2BE_U32(uuid.Gen.u32TimeLow);
1481	uuid.Gen.u16TimeMid = RT_H2BE_U16(uuid.Gen.u16TimeMid);
1482	uuid.Gen.u16TimeHiAndVersion = RT_H2BE_U16(uuid.Gen.u16TimeHiAndVersion);
1483	rc = pcbiosPlantDMITable(pDevIns, pThis->au8DMIPage, VBOX_DMI_TABLE_SIZE, &uuid, pCfgHandle);
1484	if (RT_FAILURE(rc))
1485	return rc;
1486	if (pThis->u8IOAPIC)
1487	pcbiosPlantMPStable(pDevIns, pThis->au8DMIPage + VBOX_DMI_TABLE_SIZE, pThis->cCpus);
1488
1489	rc = PDMDevHlpROMRegister(pDevIns, VBOX_DMI_TABLE_BASE, _4K, pThis->au8DMIPage, false /* fShadow */, "DMI tables");
1490	if (RT_FAILURE(rc))
1491	return rc;
1492
1493	/*
1494	* Read the PXE debug logging option.
1495	*/
1496	rc = CFGMR3QueryU8Def(pCfgHandle, "PXEDebug", &pThis->u8PXEDebug, false);
1497	if (RT_FAILURE(rc))
1498	return PDMDEV_SET_ERROR(pDevIns, rc,
1499	N_("Configuration error: Querying \"PXEDebug\" as integer failed"));
1500
1501	/*
1502	* Get the system BIOS ROM file name.
1503	*/
1504	rc = CFGMR3QueryStringAlloc(pCfgHandle, "BiosRom", &pThis->pszPcBiosFile);
1505	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1506	{
1507	pThis->pszPcBiosFile = NULL;
1508	rc = VINF_SUCCESS;
1509	}
1510	else if (RT_FAILURE(rc))
1511	return PDMDEV_SET_ERROR(pDevIns, rc,
1512	N_("Configuration error: Querying \"BiosRom\" as a string failed"));
1513	else if (!*pThis->pszPcBiosFile)
1514	{
1515	MMR3HeapFree(pThis->pszPcBiosFile);
1516	pThis->pszPcBiosFile = NULL;
1517	}
1518
1519	const uint8_t *pu8PcBiosBinary = NULL;
1520	uint64_t cbPcBiosBinary;
1521	/*
1522	* Determine the system BIOS ROM size, open specified ROM file in the process.
1523	*/
1524	RTFILE FilePcBios = NIL_RTFILE;
1525	if (pThis->pszPcBiosFile)
1526	{
1527	rc = RTFileOpen(&FilePcBios, pThis->pszPcBiosFile,
1528	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
1529	if (RT_SUCCESS(rc))
1530	{
1531	rc = RTFileGetSize(FilePcBios, &pThis->cbPcBios);
1532	if (RT_SUCCESS(rc))
1533	{
1534	/* The following checks should be in sync the AssertReleaseMsg's below. */
1535	if ( RT_ALIGN(pThis->cbPcBios, _64K) != pThis->cbPcBios
1536	\|\| pThis->cbPcBios > 32 * _64K
1537	\|\| pThis->cbPcBios < _64K)
1538	rc = VERR_TOO_MUCH_DATA;
1539	}
1540	}
1541	if (RT_FAILURE(rc))
1542	{
1543	/*
1544	* In case of failure simply fall back to the built-in BIOS ROM.
1545	*/
1546	Log(("pcbiosConstruct: Failed to open system BIOS ROM file '%s', rc=%Rrc!\n", pThis->pszPcBiosFile, rc));
1547	RTFileClose(FilePcBios);
1548	FilePcBios = NIL_RTFILE;
1549	MMR3HeapFree(pThis->pszPcBiosFile);
1550	pThis->pszPcBiosFile = NULL;
1551	}
1552	}
1553
1554	/*
1555	* Attempt to get the system BIOS ROM data from file.
1556	*/
1557	if (pThis->pszPcBiosFile)
1558	{
1559	/*
1560	* Allocate buffer for the system BIOS ROM data.
1561	*/
1562	pThis->pu8PcBios = (uint8_t *)PDMDevHlpMMHeapAlloc(pDevIns, pThis->cbPcBios);
1563	if (pThis->pu8PcBios)
1564	{
1565	rc = RTFileRead(FilePcBios, pThis->pu8PcBios, pThis->cbPcBios, NULL);
1566	if (RT_FAILURE(rc))
1567	{
1568	AssertMsgFailed(("RTFileRead(,,%d,NULL) -> %Rrc\n", pThis->cbPcBios, rc));
1569	MMR3HeapFree(pThis->pu8PcBios);
1570	pThis->pu8PcBios = NULL;
1571	}
1572	rc = VINF_SUCCESS;
1573	}
1574	else
1575	rc = VERR_NO_MEMORY;
1576	}
1577	else
1578	pThis->pu8PcBios = NULL;
1579
1580	/* cleanup */
1581	if (FilePcBios != NIL_RTFILE)
1582	RTFileClose(FilePcBios);
1583
1584	/* If we were unable to get the data from file for whatever reason, fall
1585	* back to the built-in ROM image.
1586	*/
1587	if (pThis->pu8PcBios == NULL)
1588	{
1589	pu8PcBiosBinary = g_abPcBiosBinary;
1590	cbPcBiosBinary = g_cbPcBiosBinary;
1591	}
1592	else
1593	{
1594	pu8PcBiosBinary = pThis->pu8PcBios;
1595	cbPcBiosBinary = pThis->cbPcBios;
1596	}
1597
1598	/*
1599	* Map the BIOS into memory.
1600	* There are two mappings:
1601	* 1. 0x000e0000 to 0x000fffff contains the last 128 kb of the bios.
1602	* The bios code might be 64 kb in size, and will then start at 0xf0000.
1603	* 2. 0xfffxxxxx to 0xffffffff contains the entire bios.
1604	*/
1605	AssertReleaseMsg(cbPcBiosBinary >= _64K, ("cbPcBiosBinary=%#x\n", cbPcBiosBinary));
1606	AssertReleaseMsg(RT_ALIGN_Z(cbPcBiosBinary, _64K) == cbPcBiosBinary,
1607	("cbPcBiosBinary=%#x\n", cbPcBiosBinary));
1608	cb = RT_MIN(cbPcBiosBinary, 128 * _1K); /* Effectively either 64 or 128K. */
1609	rc = PDMDevHlpROMRegister(pDevIns, 0x00100000 - cb, cb, &pu8PcBiosBinary[cbPcBiosBinary - cb],
1610	false /* fShadow */, "PC BIOS - 0xfffff");
1611	if (RT_FAILURE(rc))
1612	return rc;
1613	rc = PDMDevHlpROMRegister(pDevIns, (uint32_t)-(int32_t)cbPcBiosBinary, cbPcBiosBinary, pu8PcBiosBinary,
1614	false /* fShadow */, "PC BIOS - 0xffffffff");
1615	if (RT_FAILURE(rc))
1616	return rc;
1617
1618	#ifdef VBOX_WITH_VMI
1619	/*
1620	* Map the VMI BIOS into memory.
1621	*/
1622	AssertReleaseMsg(g_cbVmiBiosBinary == _4K, ("cbVmiBiosBinary=%#x\n", g_cbVmiBiosBinary));
1623	rc = PDMDevHlpROMRegister(pDevIns, VBOX_VMI_BIOS_BASE, g_cbVmiBiosBinary, g_abVmiBiosBinary, false, "VMI BIOS");
1624	if (RT_FAILURE(rc))
1625	return rc;
1626	#endif /* VBOX_WITH_VMI */
1627
1628	/*
1629	* Call reset to set values and stuff.
1630	*/
1631	pcbiosReset(pDevIns);
1632
1633	/*
1634	* Get the LAN boot ROM file name.
1635	*/
1636	rc = CFGMR3QueryStringAlloc(pCfgHandle, "LanBootRom", &pThis->pszLanBootFile);
1637	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1638	{
1639	pThis->pszLanBootFile = NULL;
1640	rc = VINF_SUCCESS;
1641	}
1642	else if (RT_FAILURE(rc))
1643	return PDMDEV_SET_ERROR(pDevIns, rc,
1644	N_("Configuration error: Querying \"LanBootRom\" as a string failed"));
1645	else if (!*pThis->pszLanBootFile)
1646	{
1647	MMR3HeapFree(pThis->pszLanBootFile);
1648	pThis->pszLanBootFile = NULL;
1649	}
1650
1651	uint64_t cbFileLanBoot;
1652	const uint8_t *pu8LanBootBinary = NULL;
1653	uint64_t cbLanBootBinary;
1654
1655	/*
1656	* Determine the LAN boot ROM size, open specified ROM file in the process.
1657	*/
1658	RTFILE FileLanBoot = NIL_RTFILE;
1659	if (pThis->pszLanBootFile)
1660	{
1661	rc = RTFileOpen(&FileLanBoot, pThis->pszLanBootFile,
1662	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
1663	if (RT_SUCCESS(rc))
1664	{
1665	rc = RTFileGetSize(FileLanBoot, &cbFileLanBoot);
1666	if (RT_SUCCESS(rc))
1667	{
1668	if ( RT_ALIGN(cbFileLanBoot, _4K) != cbFileLanBoot
1669	\|\| cbFileLanBoot > _64K)
1670	rc = VERR_TOO_MUCH_DATA;
1671	}
1672	}
1673	if (RT_FAILURE(rc))
1674	{
1675	/*
1676	* Ignore failure and fall back to the built-in LAN boot ROM.
1677	*/
1678	Log(("pcbiosConstruct: Failed to open LAN boot ROM file '%s', rc=%Rrc!\n", pThis->pszLanBootFile, rc));
1679	RTFileClose(FileLanBoot);
1680	FileLanBoot = NIL_RTFILE;
1681	MMR3HeapFree(pThis->pszLanBootFile);
1682	pThis->pszLanBootFile = NULL;
1683	}
1684	}
1685
1686	/*
1687	* Get the LAN boot ROM data.
1688	*/
1689	if (pThis->pszLanBootFile)
1690	{
1691	/*
1692	* Allocate buffer for the LAN boot ROM data.
1693	*/
1694	pThis->pu8LanBoot = (uint8_t *)PDMDevHlpMMHeapAlloc(pDevIns, cbFileLanBoot);
1695	if (pThis->pu8LanBoot)
1696	{
1697	rc = RTFileRead(FileLanBoot, pThis->pu8LanBoot, cbFileLanBoot, NULL);
1698	if (RT_FAILURE(rc))
1699	{
1700	AssertMsgFailed(("RTFileRead(,,%d,NULL) -> %Rrc\n", cbFileLanBoot, rc));
1701	MMR3HeapFree(pThis->pu8LanBoot);
1702	pThis->pu8LanBoot = NULL;
1703	}
1704	rc = VINF_SUCCESS;
1705	}
1706	else
1707	rc = VERR_NO_MEMORY;
1708	}
1709	else
1710	pThis->pu8LanBoot = NULL;
1711
1712	/* cleanup */
1713	if (FileLanBoot != NIL_RTFILE)
1714	RTFileClose(FileLanBoot);
1715
1716	/* If we were unable to get the data from file for whatever reason, fall
1717	* back to the built-in LAN boot ROM image.
1718	*/
1719	if (pThis->pu8LanBoot == NULL)
1720	{
1721	pu8LanBootBinary = g_abNetBiosBinary;
1722	cbLanBootBinary = g_cbNetBiosBinary;
1723	}
1724	else
1725	{
1726	pu8LanBootBinary = pThis->pu8LanBoot;
1727	cbLanBootBinary = cbFileLanBoot;
1728	}
1729
1730	/*
1731	* Map the Network Boot ROM into memory.
1732	* Currently there is a fixed mapping: 0x000c8000 to 0x000cffff contains
1733	* the (up to) 32 kb ROM image.
1734	*/
1735	if (pu8LanBootBinary)
1736	rc = PDMDevHlpROMRegister(pDevIns, VBOX_LANBOOT_SEG << 4, cbLanBootBinary, pu8LanBootBinary,
1737	true /* fShadow */, "Net Boot ROM");
1738
1739	rc = CFGMR3QueryU8Def(pCfgHandle, "DelayBoot", &pThis->uBootDelay, 0);
1740	if (RT_FAILURE(rc))
1741	return PDMDEV_SET_ERROR(pDevIns, rc,
1742	N_("Configuration error: Querying \"DelayBoot\" as integer failed"));
1743	if (pThis->uBootDelay > 15)
1744	pThis->uBootDelay = 15;
1745
1746	return rc;
1747	}
1748
1749
1750	/**
1751	* The device registration structure.
1752	*/
1753	const PDMDEVREG g_DevicePcBios =
1754	{
1755	/* u32Version */
1756	PDM_DEVREG_VERSION,
1757	/* szDeviceName */
1758	"pcbios",
1759	/* szGCMod */
1760	"",
1761	/* szR0Mod */
1762	"",
1763	/* pszDescription */
1764	"PC BIOS Device",
1765	/* fFlags */
1766	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64,
1767	/* fClass */
1768	PDM_DEVREG_CLASS_ARCH_BIOS,
1769	/* cMaxInstances */
1770	1,
1771	/* cbInstance */
1772	sizeof(DEVPCBIOS),
1773	/* pfnConstruct */
1774	pcbiosConstruct,
1775	/* pfnDestruct */
1776	pcbiosDestruct,
1777	/* pfnRelocate */
1778	NULL,
1779	/* pfnIOCtl */
1780	NULL,
1781	/* pfnPowerOn */
1782	NULL,
1783	/* pfnReset */
1784	pcbiosReset,
1785	/* pfnSuspend */
1786	NULL,
1787	/* pfnResume */
1788	NULL,
1789	/* pfnAttach */
1790	NULL,
1791	/* pfnDetach */
1792	NULL,
1793	/* pfnQueryInterface. */
1794	NULL,
1795	/* pfnInitComplete. */
1796	pcbiosInitComplete
1797	};
1798

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source: vbox/trunk/src/VBox/Devices/PC/DevPcBios.cpp@ 12969

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