DevPcBios.cpp@ 35351

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1	/* $Id: DevPcBios.cpp 35346 2010-12-27 16:13:13Z vboxsync $ */
2	/** @file
3	* PC BIOS Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2008 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_PC_BIOS
22	#include <VBox/vmm/pdmdev.h>
23	#include <VBox/vmm/mm.h>
24	#include <VBox/vmm/pgm.h>
25
26	#include <VBox/log.h>
27	#include <iprt/asm.h>
28	#include <iprt/assert.h>
29	#include <iprt/buildconfig.h>
30	#include <iprt/file.h>
31	#include <iprt/mem.h>
32	#include <iprt/string.h>
33	#include <iprt/uuid.h>
34	#include <VBox/err.h>
35	#include <VBox/param.h>
36
37	#include "../Builtins.h"
38	#include "../Builtins2.h"
39	#include "DevPcBios.h"
40	#include "DevFwCommon.h"
41
42	#define NET_BOOT_DEVS 4
43
44
45	/** @page pg_devbios_cmos_assign CMOS Assignments (BIOS)
46	*
47	* The BIOS uses a CMOS to store configuration data.
48	* It is currently used as follows:
49	*
50	* @verbatim
51	First CMOS bank (offsets 0x00 to 0x7f):
52	Base memory:
53	0x15
54	0x16
55	Extended memory:
56	0x17
57	0x18
58	0x30
59	0x31
60	Amount of memory above 16M and below 4GB in 64KB units:
61	0x34
62	0x35
63	Boot device (BOCHS bios specific):
64	0x3d
65	0x38
66	0x3c
67	PXE debug:
68	0x3f
69	Floppy drive type:
70	0x10
71	Equipment byte:
72	0x14
73	First HDD:
74	0x19
75	0x1e - 0x25
76	Second HDD:
77	0x1a
78	0x26 - 0x2d
79	Third HDD:
80	0x67 - 0x6e
81	Fourth HDD:
82	0x70 - 0x77
83	Extended:
84	0x12
85	First Sata HDD:
86	0x40 - 0x47
87	Second Sata HDD:
88	0x48 - 0x4f
89	Third Sata HDD:
90	0x50 - 0x57
91	Fourth Sata HDD:
92	0x58 - 0x5f
93	Number of CPUs:
94	0x60
95	RAM above 4G in 64KB units:
96	0x61 - 0x65
97
98	Second CMOS bank (offsets 0x80 to 0xff):
99	Reserved for internal use by PXE ROM:
100	0x80 - 0x81
101	First net boot device PCI bus/dev/fn:
102	0x82 - 0x83
103	Second to third net boot devices:
104	0x84 - 0x89
105	@endverbatim
106	*
107	* @todo Mark which bits are compatible with which BIOSes and
108	* which are our own definitions.
109	*/
110
111
112	/*******************************************************************************
113	* Structures and Typedefs *
114	*******************************************************************************/
115
116	/**
117	* The boot device.
118	*/
119	typedef enum DEVPCBIOSBOOT
120	{
121	DEVPCBIOSBOOT_NONE,
122	DEVPCBIOSBOOT_FLOPPY,
123	DEVPCBIOSBOOT_HD,
124	DEVPCBIOSBOOT_DVD,
125	DEVPCBIOSBOOT_LAN
126	} DEVPCBIOSBOOT;
127
128	/**
129	* PC Bios instance data structure.
130	*/
131	typedef struct DEVPCBIOS
132	{
133	/** Pointer back to the device instance. */
134	PPDMDEVINS pDevIns;
135
136	/** Boot devices (ordered). */
137	DEVPCBIOSBOOT aenmBootDevice[4];
138	/** RAM size (in bytes). */
139	uint64_t cbRam;
140	/** RAM hole size (in bytes). */
141	uint32_t cbRamHole;
142	/** Bochs shutdown index. */
143	uint32_t iShutdown;
144	/** Floppy device. */
145	char *pszFDDevice;
146	/** Harddisk device. */
147	char *pszHDDevice;
148	/** Sata harddisk device. */
149	char *pszSataDevice;
150	/** LUN of the four harddisks which are emulated as IDE. */
151	uint32_t iSataHDLUN[4];
152	/** Bios message buffer. */
153	char szMsg[256];
154	/** Bios message buffer index. */
155	uint32_t iMsg;
156	/** The system BIOS ROM data. */
157	uint8_t *pu8PcBios;
158	/** The size of the system BIOS ROM. */
159	uint64_t cbPcBios;
160	/** The name of the BIOS ROM file. */
161	char *pszPcBiosFile;
162	/** The LAN boot ROM data. */
163	uint8_t *pu8LanBoot;
164	/** The name of the LAN boot ROM file. */
165	char *pszLanBootFile;
166	/** The size of the LAN boot ROM. */
167	uint64_t cbLanBoot;
168	/** The DMI tables. */
169	uint8_t au8DMIPage[0x1000];
170	/** The boot countdown (in seconds). */
171	uint8_t uBootDelay;
172	/** I/O-APIC enabled? */
173	uint8_t u8IOAPIC;
174	/** PXE debug logging enabled? */
175	uint8_t u8PXEDebug;
176	/** PXE boot PCI bus/dev/fn list. */
177	uint16_t au16NetBootDev[NET_BOOT_DEVS];
178	/** Number of logical CPUs in guest */
179	uint16_t cCpus;
180	uint32_t u32McfgBase;
181	uint32_t cbMcfgLength;
182	} DEVPCBIOS, *PDEVPCBIOS;
183
184
185	/* Attempt to guess the LCHS disk geometry from the MS-DOS master boot
186	* record (partition table). */
187	static int biosGuessDiskLCHS(PPDMIBLOCK pBlock, PPDMMEDIAGEOMETRY pLCHSGeometry)
188	{
189	uint8_t aMBR[512], *p;
190	int rc;
191	uint32_t iEndHead, iEndSector, cLCHSCylinders, cLCHSHeads, cLCHSSectors;
192
193	if (!pBlock)
194	return VERR_INVALID_PARAMETER;
195	rc = pBlock->pfnRead(pBlock, 0, aMBR, sizeof(aMBR));
196	if (RT_FAILURE(rc))
197	return rc;
198	/* Test MBR magic number. */
199	if (aMBR[510] != 0x55 \|\| aMBR[511] != 0xaa)
200	return VERR_INVALID_PARAMETER;
201	for (uint32_t i = 0; i < 4; i++)
202	{
203	/* Figure out the start of a partition table entry. */
204	p = &aMBR[0x1be + i * 16];
205	iEndHead = p[5];
206	iEndSector = p[6] & 63;
207	if ((p[12] \| p[13] \| p[14] \| p[15]) && iEndSector & iEndHead)
208	{
209	/* Assumption: partition terminates on a cylinder boundary. */
210	cLCHSHeads = iEndHead + 1;
211	cLCHSSectors = iEndSector;
212	cLCHSCylinders = RT_MIN(1024, pBlock->pfnGetSize(pBlock) / (512 * cLCHSHeads * cLCHSSectors));
213	if (cLCHSCylinders >= 1)
214	{
215	pLCHSGeometry->cCylinders = cLCHSCylinders;
216	pLCHSGeometry->cHeads = cLCHSHeads;
217	pLCHSGeometry->cSectors = cLCHSSectors;
218	Log(("%s: LCHS=%d %d %d\n", __FUNCTION__, cLCHSCylinders, cLCHSHeads, cLCHSSectors));
219	return VINF_SUCCESS;
220	}
221	}
222	}
223	return VERR_INVALID_PARAMETER;
224	}
225
226
227	/**
228	* Write to CMOS memory.
229	* This is used by the init complete code.
230	*/
231	static void pcbiosCmosWrite(PPDMDEVINS pDevIns, int off, uint32_t u32Val)
232	{
233	Assert(off < 256);
234	Assert(u32Val < 256);
235
236	int rc = PDMDevHlpCMOSWrite(pDevIns, off, u32Val);
237	AssertRC(rc);
238	}
239
240	/* -=-=-=-=-=-=- based on code from pc.c -=-=-=-=-=-=- */
241
242	/**
243	* Initializes the CMOS data for one harddisk.
244	*/
245	static void pcbiosCmosInitHardDisk(PPDMDEVINS pDevIns, int offType, int offInfo, PCPDMMEDIAGEOMETRY pLCHSGeometry)
246	{
247	Log2(("%s: offInfo=%#x: LCHS=%d/%d/%d\n", __FUNCTION__, offInfo, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
248	if (offType)
249	pcbiosCmosWrite(pDevIns, offType, 48);
250	/* Cylinders low */
251	pcbiosCmosWrite(pDevIns, offInfo + 0, RT_MIN(pLCHSGeometry->cCylinders, 1024) & 0xff);
252	/* Cylinders high */
253	pcbiosCmosWrite(pDevIns, offInfo + 1, RT_MIN(pLCHSGeometry->cCylinders, 1024) >> 8);
254	/* Heads */
255	pcbiosCmosWrite(pDevIns, offInfo + 2, pLCHSGeometry->cHeads);
256	/* Landing zone low */
257	pcbiosCmosWrite(pDevIns, offInfo + 3, 0xff);
258	/* Landing zone high */
259	pcbiosCmosWrite(pDevIns, offInfo + 4, 0xff);
260	/* Write precomp low */
261	pcbiosCmosWrite(pDevIns, offInfo + 5, 0xff);
262	/* Write precomp high */
263	pcbiosCmosWrite(pDevIns, offInfo + 6, 0xff);
264	/* Sectors */
265	pcbiosCmosWrite(pDevIns, offInfo + 7, pLCHSGeometry->cSectors);
266	}
267
268	/**
269	* Set logical CHS geometry for a hard disk
270	*
271	* @returns VBox status code.
272	* @param pBase Base interface for the device.
273	* @param pHardDisk The hard disk.
274	* @param pLCHSGeometry Where to store the geometry settings.
275	*/
276	static int setLogicalDiskGeometry(PPDMIBASE pBase, PPDMIBLOCKBIOS pHardDisk, PPDMMEDIAGEOMETRY pLCHSGeometry)
277	{
278	PDMMEDIAGEOMETRY LCHSGeometry;
279	int rc = VINF_SUCCESS;
280
281	rc = pHardDisk->pfnGetLCHSGeometry(pHardDisk, &LCHSGeometry);
282	if ( rc == VERR_PDM_GEOMETRY_NOT_SET
283	\|\| LCHSGeometry.cCylinders == 0
284	\|\| LCHSGeometry.cHeads == 0
285	\|\| LCHSGeometry.cHeads > 255
286	\|\| LCHSGeometry.cSectors == 0
287	\|\| LCHSGeometry.cSectors > 63)
288	{
289	PPDMIBLOCK pBlock;
290	pBlock = PDMIBASE_QUERY_INTERFACE(pBase, PDMIBLOCK);
291	/* No LCHS geometry, autodetect and set. */
292	rc = biosGuessDiskLCHS(pBlock, &LCHSGeometry);
293	if (RT_FAILURE(rc))
294	{
295	/* Try if PCHS geometry works, otherwise fall back. */
296	rc = pHardDisk->pfnGetPCHSGeometry(pHardDisk, &LCHSGeometry);
297	}
298	if ( RT_FAILURE(rc)
299	\|\| LCHSGeometry.cCylinders == 0
300	\|\| LCHSGeometry.cCylinders > 1024
301	\|\| LCHSGeometry.cHeads == 0
302	\|\| LCHSGeometry.cHeads > 16
303	\|\| LCHSGeometry.cSectors == 0
304	\|\| LCHSGeometry.cSectors > 63)
305	{
306	uint64_t cSectors = pBlock->pfnGetSize(pBlock) / 512;
307	if (cSectors / 16 / 63 <= 1024)
308	{
309	LCHSGeometry.cCylinders = RT_MAX(cSectors / 16 / 63, 1);
310	LCHSGeometry.cHeads = 16;
311	}
312	else if (cSectors / 32 / 63 <= 1024)
313	{
314	LCHSGeometry.cCylinders = RT_MAX(cSectors / 32 / 63, 1);
315	LCHSGeometry.cHeads = 32;
316	}
317	else if (cSectors / 64 / 63 <= 1024)
318	{
319	LCHSGeometry.cCylinders = cSectors / 64 / 63;
320	LCHSGeometry.cHeads = 64;
321	}
322	else if (cSectors / 128 / 63 <= 1024)
323	{
324	LCHSGeometry.cCylinders = cSectors / 128 / 63;
325	LCHSGeometry.cHeads = 128;
326	}
327	else
328	{
329	LCHSGeometry.cCylinders = RT_MIN(cSectors / 255 / 63, 1024);
330	LCHSGeometry.cHeads = 255;
331	}
332	LCHSGeometry.cSectors = 63;
333
334	}
335	rc = pHardDisk->pfnSetLCHSGeometry(pHardDisk, &LCHSGeometry);
336	if (rc == VERR_VD_IMAGE_READ_ONLY)
337	{
338	LogRel(("DevPcBios: ATA failed to update LCHS geometry, read only\n"));
339	rc = VINF_SUCCESS;
340	}
341	else if (rc == VERR_PDM_GEOMETRY_NOT_SET)
342	{
343	LogRel(("DevPcBios: ATA failed to update LCHS geometry, backend refused\n"));
344	rc = VINF_SUCCESS;
345	}
346	}
347
348	*pLCHSGeometry = LCHSGeometry;
349
350	return rc;
351	}
352
353	/**
354	* Get BIOS boot code from enmBootDevice in order
355	*
356	* @todo r=bird: This is a rather silly function since the conversion is 1:1.
357	*/
358	static uint8_t getBiosBootCode(PDEVPCBIOS pThis, unsigned iOrder)
359	{
360	switch (pThis->aenmBootDevice[iOrder])
361	{
362	case DEVPCBIOSBOOT_NONE:
363	return 0;
364	case DEVPCBIOSBOOT_FLOPPY:
365	return 1;
366	case DEVPCBIOSBOOT_HD:
367	return 2;
368	case DEVPCBIOSBOOT_DVD:
369	return 3;
370	case DEVPCBIOSBOOT_LAN:
371	return 4;
372	default:
373	AssertMsgFailed(("aenmBootDevice[%d]=%d\n", iOrder, pThis->aenmBootDevice[iOrder]));
374	return 0;
375	}
376	}
377
378
379	/**
380	* Init complete notification.
381	* This routine will write information needed by the bios to the CMOS.
382	*
383	* @returns VBOX status code.
384	* @param pDevIns The device instance.
385	* @see http://www.brl.ntt.co.jp/people/takehiko/interrupt/CMOS.LST.txt for
386	* a description of standard and non-standard CMOS registers.
387	*/
388	static DECLCALLBACK(int) pcbiosInitComplete(PPDMDEVINS pDevIns)
389	{
390	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
391	uint32_t u32;
392	unsigned i;
393	PVM pVM = PDMDevHlpGetVM(pDevIns);
394	PPDMIBLOCKBIOS apHDs[4] = {0};
395	PPDMIBLOCKBIOS apFDs[2] = {0};
396	AssertRelease(pVM);
397	LogFlow(("pcbiosInitComplete:\n"));
398
399	/*
400	* Memory sizes.
401	*/
402	/* base memory. */
403	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 */
404	pcbiosCmosWrite(pDevIns, 0x15, u32 & 0xff); /* 15h - Base Memory in K, Low Byte */
405	pcbiosCmosWrite(pDevIns, 0x16, u32 >> 8); /* 16h - Base Memory in K, High Byte */
406
407	/* Extended memory, up to 65MB */
408	u32 = pThis->cbRam >= 65 * _1M ? 0xffff : ((uint32_t)pThis->cbRam - _1M) / _1K;
409	pcbiosCmosWrite(pDevIns, 0x17, u32 & 0xff); /* 17h - Extended Memory in K, Low Byte */
410	pcbiosCmosWrite(pDevIns, 0x18, u32 >> 8); /* 18h - Extended Memory in K, High Byte */
411	pcbiosCmosWrite(pDevIns, 0x30, u32 & 0xff); /* 30h - Extended Memory in K, Low Byte */
412	pcbiosCmosWrite(pDevIns, 0x31, u32 >> 8); /* 31h - Extended Memory in K, High Byte */
413
414	/* Bochs BIOS specific? Anyway, it's the amount of memory above 16MB
415	and below 4GB (as it can only hold 4GB+16M). We have to chop off the
416	top 2MB or it conflict with what the ACPI tables return. (Should these
417	be adjusted, we still have to chop it at 0xfffc0000 or it'll conflict
418	with the high BIOS mapping.) */
419	uint64_t const offRamHole = _4G - pThis->cbRamHole;
420	if (pThis->cbRam > 16 * _1M)
421	u32 = (uint32_t)( (RT_MIN(RT_MIN(pThis->cbRam, offRamHole), UINT32_C(0xffe00000)) - 16U * _1M) / _64K );
422	else
423	u32 = 0;
424	pcbiosCmosWrite(pDevIns, 0x34, u32 & 0xff);
425	pcbiosCmosWrite(pDevIns, 0x35, u32 >> 8);
426
427	/* Bochs/VBox BIOS specific way of specifying memory above 4GB in 64KB units.
428	Bochs got these in a different location which we've already used for SATA,
429	it also lacks the last two. */
430	uint64_t c64KBAbove4GB;
431	if (pThis->cbRam <= offRamHole)
432	c64KBAbove4GB = 0;
433	else
434	{
435	c64KBAbove4GB = (pThis->cbRam - offRamHole) / _64K;
436	/* Make sure it doesn't hit the limits of the current BIOS code. */
437	AssertLogRelMsgReturn((c64KBAbove4GB >> (3 * 8)) < 255, ("%#RX64\n", c64KBAbove4GB), VERR_OUT_OF_RANGE);
438	}
439	pcbiosCmosWrite(pDevIns, 0x61, c64KBAbove4GB & 0xff);
440	pcbiosCmosWrite(pDevIns, 0x62, (c64KBAbove4GB >> 8) & 0xff);
441	pcbiosCmosWrite(pDevIns, 0x63, (c64KBAbove4GB >> 16) & 0xff);
442	pcbiosCmosWrite(pDevIns, 0x64, (c64KBAbove4GB >> 24) & 0xff);
443	pcbiosCmosWrite(pDevIns, 0x65, (c64KBAbove4GB >> 32) & 0xff);
444
445	/*
446	* Number of CPUs.
447	*/
448	pcbiosCmosWrite(pDevIns, 0x60, pThis->cCpus & 0xff);
449
450	/*
451	* Bochs BIOS specifics - boot device.
452	* We do both new and old (ami-style) settings.
453	* See rombios.c line ~7215 (int19_function).
454	*/
455
456	uint8_t reg3d = getBiosBootCode(pThis, 0) \| (getBiosBootCode(pThis, 1) << 4);
457	uint8_t reg38 = /* pcbiosCmosRead(pDevIns, 0x38) \| */ getBiosBootCode(pThis, 2) << 4;
458	/* This is an extension. Bochs BIOS normally supports only 3 boot devices. */
459	uint8_t reg3c = getBiosBootCode(pThis, 3) \| (pThis->uBootDelay << 4);
460	pcbiosCmosWrite(pDevIns, 0x3d, reg3d);
461	pcbiosCmosWrite(pDevIns, 0x38, reg38);
462	pcbiosCmosWrite(pDevIns, 0x3c, reg3c);
463
464	/*
465	* PXE debug option.
466	*/
467	pcbiosCmosWrite(pDevIns, 0x3f, pThis->u8PXEDebug);
468
469	/*
470	* Network boot device list.
471	*/
472	for (i = 0; i < NET_BOOT_DEVS; ++i)
473	{
474	pcbiosCmosWrite(pDevIns, 0x82 + i * 2, pThis->au16NetBootDev[i] & 0xff);
475	pcbiosCmosWrite(pDevIns, 0x83 + i * 2, pThis->au16NetBootDev[i] >> 8);
476	}
477
478	/*
479	* Floppy drive type.
480	*/
481	for (i = 0; i < RT_ELEMENTS(apFDs); i++)
482	{
483	PPDMIBASE pBase;
484	int rc = PDMR3QueryLun(pVM, pThis->pszFDDevice, 0, i, &pBase);
485	if (RT_SUCCESS(rc))
486	apFDs[i] = PDMIBASE_QUERY_INTERFACE(pBase, PDMIBLOCKBIOS);
487	}
488	u32 = 0;
489	if (apFDs[0])
490	switch (apFDs[0]->pfnGetType(apFDs[0]))
491	{
492	case PDMBLOCKTYPE_FLOPPY_360: u32 \|= 1 << 4; break;
493	case PDMBLOCKTYPE_FLOPPY_1_20: u32 \|= 2 << 4; break;
494	case PDMBLOCKTYPE_FLOPPY_720: u32 \|= 3 << 4; break;
495	case PDMBLOCKTYPE_FLOPPY_1_44: u32 \|= 4 << 4; break;
496	case PDMBLOCKTYPE_FLOPPY_2_88: u32 \|= 5 << 4; break;
497	default: AssertFailed(); break;
498	}
499	if (apFDs[1])
500	switch (apFDs[1]->pfnGetType(apFDs[1]))
501	{
502	case PDMBLOCKTYPE_FLOPPY_360: u32 \|= 1; break;
503	case PDMBLOCKTYPE_FLOPPY_1_20: u32 \|= 2; break;
504	case PDMBLOCKTYPE_FLOPPY_720: u32 \|= 3; break;
505	case PDMBLOCKTYPE_FLOPPY_1_44: u32 \|= 4; break;
506	case PDMBLOCKTYPE_FLOPPY_2_88: u32 \|= 5; break;
507	default: AssertFailed(); break;
508	}
509	pcbiosCmosWrite(pDevIns, 0x10, u32); /* 10h - Floppy Drive Type */
510
511	/*
512	* Equipment byte.
513	*/
514	u32 = !!apFDs[0] + !!apFDs[1];
515	switch (u32)
516	{
517	case 1: u32 = 0x01; break; /* floppy installed, 2 drives. */
518	default:u32 = 0; break; /* floppy not installed. */
519	}
520	u32 \|= RT_BIT(1); /* math coprocessor installed */
521	u32 \|= RT_BIT(2); /* keyboard enabled (or mouse?) */
522	u32 \|= RT_BIT(3); /* display enabled (monitory type is 0, i.e. vga) */
523	pcbiosCmosWrite(pDevIns, 0x14, u32); /* 14h - Equipment Byte */
524
525	/*
526	* Harddisks.
527	*/
528	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
529	{
530	PPDMIBASE pBase;
531	int rc = PDMR3QueryLun(pVM, pThis->pszHDDevice, 0, i, &pBase);
532	if (RT_SUCCESS(rc))
533	apHDs[i] = PDMIBASE_QUERY_INTERFACE(pBase, PDMIBLOCKBIOS);
534	if ( apHDs[i]
535	&& ( apHDs[i]->pfnGetType(apHDs[i]) != PDMBLOCKTYPE_HARD_DISK
536	\|\| !apHDs[i]->pfnIsVisible(apHDs[i])))
537	apHDs[i] = NULL;
538	if (apHDs[i])
539	{
540	PDMMEDIAGEOMETRY LCHSGeometry;
541	int rc2 = setLogicalDiskGeometry(pBase, apHDs[i], &LCHSGeometry);
542	AssertRC(rc2);
543
544	if (i < 4)
545	{
546	/* Award BIOS extended drive types for first to fourth disk.
547	* Used by the BIOS for setting the logical geometry. */
548	int offType, offInfo;
549	switch (i)
550	{
551	case 0:
552	offType = 0x19;
553	offInfo = 0x1e;
554	break;
555	case 1:
556	offType = 0x1a;
557	offInfo = 0x26;
558	break;
559	case 2:
560	offType = 0x00;
561	offInfo = 0x67;
562	break;
563	case 3:
564	default:
565	offType = 0x00;
566	offInfo = 0x70;
567	break;
568	}
569	pcbiosCmosInitHardDisk(pDevIns, offType, offInfo,
570	&LCHSGeometry);
571	}
572	LogRel(("DevPcBios: ATA LUN#%d LCHS=%u/%u/%u\n", i, LCHSGeometry.cCylinders, LCHSGeometry.cHeads, LCHSGeometry.cSectors));
573	}
574	}
575
576	/* 0Fh means extended and points to 19h, 1Ah */
577	u32 = (apHDs[0] ? 0xf0 : 0) \| (apHDs[1] ? 0x0f : 0);
578	pcbiosCmosWrite(pDevIns, 0x12, u32);
579
580	/*
581	* Sata Harddisks.
582	*/
583	if (pThis->pszSataDevice)
584	{
585	/* Clear pointers to IDE controller. */
586	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
587	apHDs[i] = NULL;
588
589	for (i = 0; i < RT_ELEMENTS(apHDs); i++)
590	{
591	PPDMIBASE pBase;
592	int rc = PDMR3QueryLun(pVM, pThis->pszSataDevice, 0, pThis->iSataHDLUN[i], &pBase);
593	if (RT_SUCCESS(rc))
594	apHDs[i] = PDMIBASE_QUERY_INTERFACE(pBase, PDMIBLOCKBIOS);
595	if ( apHDs[i]
596	&& ( apHDs[i]->pfnGetType(apHDs[i]) != PDMBLOCKTYPE_HARD_DISK
597	\|\| !apHDs[i]->pfnIsVisible(apHDs[i])))
598	apHDs[i] = NULL;
599	if (apHDs[i])
600	{
601	PDMMEDIAGEOMETRY LCHSGeometry;
602	rc = setLogicalDiskGeometry(pBase, apHDs[i], &LCHSGeometry);
603	AssertRC(rc);
604
605	if (i < 4)
606	{
607	/* Award BIOS extended drive types for first to fourth disk.
608	* Used by the BIOS for setting the logical geometry. */
609	int offInfo;
610	switch (i)
611	{
612	case 0:
613	offInfo = 0x40;
614	break;
615	case 1:
616	offInfo = 0x48;
617	break;
618	case 2:
619	offInfo = 0x50;
620	break;
621	case 3:
622	default:
623	offInfo = 0x58;
624	break;
625	}
626	pcbiosCmosInitHardDisk(pDevIns, 0x00, offInfo,
627	&LCHSGeometry);
628	}
629	LogRel(("DevPcBios: SATA LUN#%d LCHS=%u/%u/%u\n", i, LCHSGeometry.cCylinders, LCHSGeometry.cHeads, LCHSGeometry.cSectors));
630	}
631	}
632	}
633
634	LogFlow(("%s: returns VINF_SUCCESS\n", __FUNCTION__));
635	return VINF_SUCCESS;
636	}
637
638	/**
639	* Port I/O Handler for IN operations.
640	*
641	* @returns VBox status code.
642	*
643	* @param pDevIns The device instance.
644	* @param pvUser User argument - ignored.
645	* @param Port Port number used for the IN operation.
646	* @param pu32 Where to store the result.
647	* @param cb Number of bytes read.
648	*/
649	static DECLCALLBACK(int) pcbiosIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
650	{
651	return VERR_IOM_IOPORT_UNUSED;
652	}
653
654
655	/**
656	* Port I/O Handler for OUT operations.
657	*
658	* @returns VBox status code.
659	*
660	* @param pDevIns The device instance.
661	* @param pvUser User argument - ignored.
662	* @param Port Port number used for the IN operation.
663	* @param u32 The value to output.
664	* @param cb The value size in bytes.
665	*/
666	static DECLCALLBACK(int) pcbiosIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
667	{
668	/*
669	* Bochs BIOS Panic
670	*/
671	if ( cb == 2
672	&& ( Port == 0x400
673	\|\| Port == 0x401))
674	{
675	Log(("pcbios: PC BIOS panic at rombios.c(%d)\n", u32));
676	AssertReleaseMsgFailed(("PC BIOS panic at rombios.c(%d)\n", u32));
677	return VERR_INTERNAL_ERROR;
678	}
679
680	/*
681	* Bochs BIOS char printing.
682	*/
683	if ( cb == 1
684	&& ( Port == 0x402
685	\|\| Port == 0x403))
686	{
687	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
688	/* The raw version. */
689	switch (u32)
690	{
691	case '\r': Log2(("pcbios: <return>\n")); break;
692	case '\n': Log2(("pcbios: <newline>\n")); break;
693	case '\t': Log2(("pcbios: <tab>\n")); break;
694	default: Log2(("pcbios: %c (%02x)\n", u32, u32)); break;
695	}
696
697	/* The readable, buffered version. */
698	if (u32 == '\n' \|\| u32 == '\r')
699	{
700	pThis->szMsg[pThis->iMsg] = '\0';
701	if (pThis->iMsg)
702	Log(("pcbios: %s\n", pThis->szMsg));
703	pThis->iMsg = 0;
704	}
705	else
706	{
707	if (pThis->iMsg >= sizeof(pThis->szMsg)-1)
708	{
709	pThis->szMsg[pThis->iMsg] = '\0';
710	Log(("pcbios: %s\n", pThis->szMsg));
711	pThis->iMsg = 0;
712	}
713	pThis->szMsg[pThis->iMsg] = (char )u32;
714	pThis->szMsg[++pThis->iMsg] = '\0';
715	}
716	return VINF_SUCCESS;
717	}
718
719	/*
720	* Bochs BIOS shutdown request.
721	*/
722	if (cb == 1 && Port == 0x8900)
723	{
724	static const unsigned char szShutdown[] = "Shutdown";
725	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
726	if (u32 == szShutdown[pThis->iShutdown])
727	{
728	pThis->iShutdown++;
729	if (pThis->iShutdown == 8)
730	{
731	pThis->iShutdown = 0;
732	LogRel(("8900h shutdown request.\n"));
733	return PDMDevHlpVMPowerOff(pDevIns);
734	}
735	}
736	else
737	pThis->iShutdown = 0;
738	return VINF_SUCCESS;
739	}
740
741	/* not in use. */
742	return VINF_SUCCESS;
743	}
744
745	/**
746	* Reset notification.
747	*
748	* @returns VBox status.
749	* @param pDevIns The device instance data.
750	*/
751	static DECLCALLBACK(void) pcbiosReset(PPDMDEVINS pDevIns)
752	{
753	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
754	LogFlow(("pcbiosReset:\n"));
755
756	if (pThis->u8IOAPIC)
757	FwCommonPlantMpsFloatPtr(pDevIns);
758
759	/*
760	* Re-shadow the LAN ROM image and make it RAM/RAM.
761	*
762	* This is normally done by the BIOS code, but since we're currently lacking
763	* the chipset support for this we do it here (and in the constructor).
764	*/
765	uint32_t cPages = RT_ALIGN_64(pThis->cbLanBoot, PAGE_SIZE) >> PAGE_SHIFT;
766	RTGCPHYS GCPhys = VBOX_LANBOOT_SEG << 4;
767	while (cPages > 0)
768	{
769	uint8_t abPage[PAGE_SIZE];
770	int rc;
771
772	/* Read the (original) ROM page and write it back to the RAM page. */
773	rc = PDMDevHlpROMProtectShadow(pDevIns, GCPhys, PAGE_SIZE, PGMROMPROT_READ_ROM_WRITE_RAM);
774	AssertLogRelRC(rc);
775
776	rc = PDMDevHlpPhysRead(pDevIns, GCPhys, abPage, PAGE_SIZE);
777	AssertLogRelRC(rc);
778	if (RT_FAILURE(rc))
779	memset(abPage, 0xcc, sizeof(abPage));
780
781	rc = PDMDevHlpPhysWrite(pDevIns, GCPhys, abPage, PAGE_SIZE);
782	AssertLogRelRC(rc);
783
784	/* Switch to the RAM/RAM mode. */
785	rc = PDMDevHlpROMProtectShadow(pDevIns, GCPhys, PAGE_SIZE, PGMROMPROT_READ_RAM_WRITE_RAM);
786	AssertLogRelRC(rc);
787
788	/* Advance */
789	GCPhys += PAGE_SIZE;
790	cPages--;
791	}
792	}
793
794
795	/**
796	* Destruct a device instance.
797	*
798	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
799	* resources can be freed correctly.
800	*
801	* @param pDevIns The device instance data.
802	*/
803	static DECLCALLBACK(int) pcbiosDestruct(PPDMDEVINS pDevIns)
804	{
805	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
806	LogFlow(("pcbiosDestruct:\n"));
807	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
808
809	/*
810	* Free MM heap pointers.
811	*/
812	if (pThis->pu8PcBios)
813	{
814	MMR3HeapFree(pThis->pu8PcBios);
815	pThis->pu8PcBios = NULL;
816	}
817
818	if (pThis->pszPcBiosFile)
819	{
820	MMR3HeapFree(pThis->pszPcBiosFile);
821	pThis->pszPcBiosFile = NULL;
822	}
823
824	if (pThis->pu8LanBoot)
825	{
826	MMR3HeapFree(pThis->pu8LanBoot);
827	pThis->pu8LanBoot = NULL;
828	}
829
830	if (pThis->pszLanBootFile)
831	{
832	MMR3HeapFree(pThis->pszLanBootFile);
833	pThis->pszLanBootFile = NULL;
834	}
835
836	if (pThis->pszHDDevice)
837	{
838	MMR3HeapFree(pThis->pszHDDevice);
839	pThis->pszHDDevice = NULL;
840	}
841
842	if (pThis->pszFDDevice)
843	{
844	MMR3HeapFree(pThis->pszFDDevice);
845	pThis->pszFDDevice = NULL;
846	}
847
848	if (pThis->pszSataDevice)
849	{
850	MMR3HeapFree(pThis->pszSataDevice);
851	pThis->pszSataDevice = NULL;
852	}
853
854	return VINF_SUCCESS;
855	}
856
857
858	/**
859	* Convert config value to DEVPCBIOSBOOT.
860	*
861	* @returns VBox status code.
862	* @param pCfg Configuration handle.
863	* @param pszParam The name of the value to read.
864	* @param penmBoot Where to store the boot method.
865	*/
866	static int pcbiosBootFromCfg(PPDMDEVINS pDevIns, PCFGMNODE pCfg, const char pszParam, DEVPCBIOSBOOT penmBoot)
867	{
868	char *psz;
869	int rc = CFGMR3QueryStringAlloc(pCfg, pszParam, &psz);
870	if (RT_FAILURE(rc))
871	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
872	N_("Configuration error: Querying \"%s\" as a string failed"),
873	pszParam);
874	if (!strcmp(psz, "DVD") \|\| !strcmp(psz, "CDROM"))
875	*penmBoot = DEVPCBIOSBOOT_DVD;
876	else if (!strcmp(psz, "IDE"))
877	*penmBoot = DEVPCBIOSBOOT_HD;
878	else if (!strcmp(psz, "FLOPPY"))
879	*penmBoot = DEVPCBIOSBOOT_FLOPPY;
880	else if (!strcmp(psz, "LAN"))
881	*penmBoot = DEVPCBIOSBOOT_LAN;
882	else if (!strcmp(psz, "NONE"))
883	*penmBoot = DEVPCBIOSBOOT_NONE;
884	else
885	{
886	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
887	N_("Configuration error: The \"%s\" value \"%s\" is unknown"),
888	pszParam, psz);
889	rc = VERR_INTERNAL_ERROR;
890	}
891	MMR3HeapFree(psz);
892	return rc;
893	}
894
895	/**
896	* @interface_method_impl{PDMDEVREG,pfnConstruct}
897	*/
898	static DECLCALLBACK(int) pcbiosConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
899	{
900	unsigned i;
901	PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
902	int rc;
903	int cb;
904
905	Assert(iInstance == 0);
906	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
907
908	/*
909	* Validate configuration.
910	*/
911	if (!CFGMR3AreValuesValid(pCfg,
912	"BootDevice0\0"
913	"BootDevice1\0"
914	"BootDevice2\0"
915	"BootDevice3\0"
916	"RamSize\0"
917	"RamHoleSize\0"
918	"HardDiskDevice\0"
919	"SataHardDiskDevice\0"
920	"SataPrimaryMasterLUN\0"
921	"SataPrimarySlaveLUN\0"
922	"SataSecondaryMasterLUN\0"
923	"SataSecondarySlaveLUN\0"
924	"FloppyDevice\0"
925	"DelayBoot\0"
926	"BiosRom\0"
927	"LanBootRom\0"
928	"PXEDebug\0"
929	"UUID\0"
930	"IOAPIC\0"
931	"NumCPUs\0"
932	"McfgBase\0"
933	"McfgLength\0"
934	"DmiBIOSVendor\0"
935	"DmiBIOSVersion\0"
936	"DmiBIOSReleaseDate\0"
937	"DmiBIOSReleaseMajor\0"
938	"DmiBIOSReleaseMinor\0"
939	"DmiBIOSFirmwareMajor\0"
940	"DmiBIOSFirmwareMinor\0"
941	"DmiSystemSKU\0"
942	"DmiSystemFamily\0"
943	"DmiSystemProduct\0"
944	"DmiSystemSerial\0"
945	"DmiSystemUuid\0"
946	"DmiSystemVendor\0"
947	"DmiSystemVersion\0"
948	"DmiChassisVendor\0"
949	"DmiChassisVersion\0"
950	"DmiChassisSerial\0"
951	"DmiChassisAssetTag\0"
952	#ifdef VBOX_WITH_DMI_OEMSTRINGS
953	"DmiOEMVBoxVer\0"
954	"DmiOEMVBoxRev\0"
955	#endif
956	"DmiUseHostInfo\0"
957	"DmiExposeMemoryTable\0"
958	))
959	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
960	N_("Invalid configuration for device pcbios device"));
961
962	/*
963	* Init the data.
964	*/
965	rc = CFGMR3QueryU64(pCfg, "RamSize", &pThis->cbRam);
966	if (RT_FAILURE(rc))
967	return PDMDEV_SET_ERROR(pDevIns, rc,
968	N_("Configuration error: Querying \"RamSize\" as integer failed"));
969
970	rc = CFGMR3QueryU32Def(pCfg, "RamHoleSize", &pThis->cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
971	if (RT_FAILURE(rc))
972	return PDMDEV_SET_ERROR(pDevIns, rc,
973	N_("Configuration error: Querying \"RamHoleSize\" as integer failed"));
974
975	rc = CFGMR3QueryU16Def(pCfg, "NumCPUs", &pThis->cCpus, 1);
976	if (RT_FAILURE(rc))
977	return PDMDEV_SET_ERROR(pDevIns, rc,
978	N_("Configuration error: Querying \"NumCPUs\" as integer failed"));
979
980	rc = CFGMR3QueryU32Def(pCfg, "McfgBase", &pThis->u32McfgBase, 0);
981	if (RT_FAILURE(rc))
982	return PDMDEV_SET_ERROR(pDevIns, rc,
983	N_("Configuration error: Querying \"\" as integer failed"));
984	rc = CFGMR3QueryU32Def(pCfg, "McfgLength", &pThis->cbMcfgLength, 0);
985	if (RT_FAILURE(rc))
986	return PDMDEV_SET_ERROR(pDevIns, rc,
987	N_("Configuration error: Querying \"McfgLength\" as integer failed"));
988
989
990	LogRel(("[SMP] BIOS with %u CPUs\n", pThis->cCpus));
991
992	rc = CFGMR3QueryU8Def(pCfg, "IOAPIC", &pThis->u8IOAPIC, 1);
993	if (RT_FAILURE (rc))
994	return PDMDEV_SET_ERROR(pDevIns, rc,
995	N_("Configuration error: Failed to read \"IOAPIC\""));
996
997	static const char * const s_apszBootDevices[] = { "BootDevice0", "BootDevice1", "BootDevice2", "BootDevice3" };
998	Assert(RT_ELEMENTS(s_apszBootDevices) == RT_ELEMENTS(pThis->aenmBootDevice));
999	for (i = 0; i < RT_ELEMENTS(pThis->aenmBootDevice); i++)
1000	{
1001	rc = pcbiosBootFromCfg(pDevIns, pCfg, s_apszBootDevices[i], &pThis->aenmBootDevice[i]);
1002	if (RT_FAILURE(rc))
1003	return rc;
1004	}
1005
1006	rc = CFGMR3QueryStringAlloc(pCfg, "HardDiskDevice", &pThis->pszHDDevice);
1007	if (RT_FAILURE(rc))
1008	return PDMDEV_SET_ERROR(pDevIns, rc,
1009	N_("Configuration error: Querying \"HardDiskDevice\" as a string failed"));
1010
1011	rc = CFGMR3QueryStringAlloc(pCfg, "FloppyDevice", &pThis->pszFDDevice);
1012	if (RT_FAILURE(rc))
1013	return PDMDEV_SET_ERROR(pDevIns, rc,
1014	N_("Configuration error: Querying \"FloppyDevice\" as a string failed"));
1015
1016	rc = CFGMR3QueryStringAlloc(pCfg, "SataHardDiskDevice", &pThis->pszSataDevice);
1017	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1018	pThis->pszSataDevice = NULL;
1019	else if (RT_FAILURE(rc))
1020	return PDMDEV_SET_ERROR(pDevIns, rc,
1021	N_("Configuration error: Querying \"SataHardDiskDevice\" as a string failed"));
1022
1023	if (pThis->pszSataDevice)
1024	{
1025	static const char * const s_apszSataDisks[] =
1026	{ "SataPrimaryMasterLUN", "SataPrimarySlaveLUN", "SataSecondaryMasterLUN", "SataSecondarySlaveLUN" };
1027	Assert(RT_ELEMENTS(s_apszSataDisks) == RT_ELEMENTS(pThis->iSataHDLUN));
1028	for (i = 0; i < RT_ELEMENTS(pThis->iSataHDLUN); i++)
1029	{
1030	rc = CFGMR3QueryU32(pCfg, s_apszSataDisks[i], &pThis->iSataHDLUN[i]);
1031	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1032	pThis->iSataHDLUN[i] = i;
1033	else if (RT_FAILURE(rc))
1034	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1035	N_("Configuration error: Querying \"%s\" as a string failed"), s_apszSataDisks);
1036	}
1037	}
1038	/*
1039	* Register I/O Ports and PC BIOS.
1040	*/
1041	rc = PDMDevHlpIOPortRegister(pDevIns, 0x400, 4, NULL, pcbiosIOPortWrite, pcbiosIOPortRead,
1042	NULL, NULL, "Bochs PC BIOS - Panic & Debug");
1043	if (RT_FAILURE(rc))
1044	return rc;
1045	rc = PDMDevHlpIOPortRegister(pDevIns, 0x8900, 1, NULL, pcbiosIOPortWrite, pcbiosIOPortRead,
1046	NULL, NULL, "Bochs PC BIOS - Shutdown");
1047	if (RT_FAILURE(rc))
1048	return rc;
1049
1050	/*
1051	* Query the machine's UUID for SMBIOS/DMI use.
1052	*/
1053	RTUUID uuid;
1054	rc = CFGMR3QueryBytes(pCfg, "UUID", &uuid, sizeof(uuid));
1055	if (RT_FAILURE(rc))
1056	return PDMDEV_SET_ERROR(pDevIns, rc,
1057	N_("Configuration error: Querying \"UUID\" failed"));
1058
1059
1060	/* Convert the UUID to network byte order. Not entirely straightforward as parts are MSB already... */
1061	uuid.Gen.u32TimeLow = RT_H2BE_U32(uuid.Gen.u32TimeLow);
1062	uuid.Gen.u16TimeMid = RT_H2BE_U16(uuid.Gen.u16TimeMid);
1063	uuid.Gen.u16TimeHiAndVersion = RT_H2BE_U16(uuid.Gen.u16TimeHiAndVersion);
1064	rc = FwCommonPlantDMITable(pDevIns, pThis->au8DMIPage,
1065	VBOX_DMI_TABLE_SIZE, &uuid, pCfg);
1066	if (RT_FAILURE(rc))
1067	return rc;
1068	if (pThis->u8IOAPIC)
1069	FwCommonPlantMpsTable(pDevIns, pThis->au8DMIPage + VBOX_DMI_TABLE_SIZE,
1070	_4K - VBOX_DMI_TABLE_SIZE, pThis->cCpus);
1071
1072	rc = PDMDevHlpROMRegister(pDevIns, VBOX_DMI_TABLE_BASE, _4K, pThis->au8DMIPage, _4K,
1073	PGMPHYS_ROM_FLAGS_PERMANENT_BINARY, "DMI tables");
1074	if (RT_FAILURE(rc))
1075	return rc;
1076
1077	/*
1078	* Read the PXE debug logging option.
1079	*/
1080	rc = CFGMR3QueryU8Def(pCfg, "PXEDebug", &pThis->u8PXEDebug, false);
1081	if (RT_FAILURE(rc))
1082	return PDMDEV_SET_ERROR(pDevIns, rc,
1083	N_("Configuration error: Querying \"PXEDebug\" as integer failed"));
1084
1085	/* Clear the net boot device list. All bits set invokes old behavior,
1086	* as if no second CMOS bank was present.
1087	*/
1088	memset(&pThis->au16NetBootDev, 0xff, sizeof(pThis->au16NetBootDev));
1089
1090	/*
1091	* Determine the network boot order.
1092	*/
1093	PCFGMNODE pCfgNetBoot = CFGMR3GetChild(pCfg, "NetBoot");
1094	if (pCfgNetBoot == NULL)
1095	{
1096	/* Do nothing. */
1097	rc = VINF_SUCCESS;
1098	}
1099	else
1100	{
1101	PCFGMNODE pCfgNetBootDevice;
1102	uint8_t u8PciBus;
1103	uint8_t u8PciDev;
1104	uint8_t u8PciFn;
1105	uint16_t u16BusDevFn;
1106	char szIndex[] = "?";
1107
1108	Assert(pCfgNetBoot);
1109	for (i = 0; i < NET_BOOT_DEVS; ++i)
1110	{
1111	szIndex[0] = '0' + i;
1112	pCfgNetBootDevice = CFGMR3GetChild(pCfgNetBoot, szIndex);
1113
1114	rc = CFGMR3QueryU8(pCfgNetBootDevice, "PCIBusNo", &u8PciBus);
1115	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
1116	{
1117	/* Do nothing and stop iterating. */
1118	rc = VINF_SUCCESS;
1119	break;
1120	}
1121	else if (RT_FAILURE(rc))
1122	return PDMDEV_SET_ERROR(pDevIns, rc,
1123	N_("Configuration error: Querying \"Netboot/x/PCIBusNo\" as integer failed"));
1124	rc = CFGMR3QueryU8(pCfgNetBootDevice, "PCIDeviceNo", &u8PciDev);
1125	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
1126	{
1127	/* Do nothing and stop iterating. */
1128	rc = VINF_SUCCESS;
1129	break;
1130	}
1131	else if (RT_FAILURE(rc))
1132	return PDMDEV_SET_ERROR(pDevIns, rc,
1133	N_("Configuration error: Querying \"Netboot/x/PCIDeviceNo\" as integer failed"));
1134	rc = CFGMR3QueryU8(pCfgNetBootDevice, "PCIFunctionNo", &u8PciFn);
1135	if (rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT)
1136	{
1137	/* Do nothing and stop iterating. */
1138	rc = VINF_SUCCESS;
1139	break;
1140	}
1141	else if (RT_FAILURE(rc))
1142	return PDMDEV_SET_ERROR(pDevIns, rc,
1143	N_("Configuration error: Querying \"Netboot/x/PCIFunctionNo\" as integer failed"));
1144	u16BusDevFn = (((uint16_t)u8PciBus) << 8) \| ((u8PciDev & 0x1F) << 3) \| (u8PciFn & 0x7);
1145	pThis->au16NetBootDev[i] = u16BusDevFn;
1146	}
1147	}
1148
1149	/*
1150	* Get the system BIOS ROM file name.
1151	*/
1152	rc = CFGMR3QueryStringAlloc(pCfg, "BiosRom", &pThis->pszPcBiosFile);
1153	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1154	{
1155	pThis->pszPcBiosFile = NULL;
1156	rc = VINF_SUCCESS;
1157	}
1158	else if (RT_FAILURE(rc))
1159	return PDMDEV_SET_ERROR(pDevIns, rc,
1160	N_("Configuration error: Querying \"BiosRom\" as a string failed"));
1161	else if (!*pThis->pszPcBiosFile)
1162	{
1163	MMR3HeapFree(pThis->pszPcBiosFile);
1164	pThis->pszPcBiosFile = NULL;
1165	}
1166
1167	const uint8_t *pu8PcBiosBinary = NULL;
1168	uint64_t cbPcBiosBinary;
1169	/*
1170	* Determine the system BIOS ROM size, open specified ROM file in the process.
1171	*/
1172	RTFILE FilePcBios = NIL_RTFILE;
1173	if (pThis->pszPcBiosFile)
1174	{
1175	rc = RTFileOpen(&FilePcBios, pThis->pszPcBiosFile,
1176	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
1177	if (RT_SUCCESS(rc))
1178	{
1179	rc = RTFileGetSize(FilePcBios, &pThis->cbPcBios);
1180	if (RT_SUCCESS(rc))
1181	{
1182	/* The following checks should be in sync the AssertReleaseMsg's below. */
1183	if ( RT_ALIGN(pThis->cbPcBios, _64K) != pThis->cbPcBios
1184	\|\| pThis->cbPcBios > 32 * _64K
1185	\|\| pThis->cbPcBios < _64K)
1186	rc = VERR_TOO_MUCH_DATA;
1187	}
1188	}
1189	if (RT_FAILURE(rc))
1190	{
1191	/*
1192	* In case of failure simply fall back to the built-in BIOS ROM.
1193	*/
1194	Log(("pcbiosConstruct: Failed to open system BIOS ROM file '%s', rc=%Rrc!\n", pThis->pszPcBiosFile, rc));
1195	RTFileClose(FilePcBios);
1196	FilePcBios = NIL_RTFILE;
1197	MMR3HeapFree(pThis->pszPcBiosFile);
1198	pThis->pszPcBiosFile = NULL;
1199	}
1200	}
1201
1202	/*
1203	* Attempt to get the system BIOS ROM data from file.
1204	*/
1205	if (pThis->pszPcBiosFile)
1206	{
1207	/*
1208	* Allocate buffer for the system BIOS ROM data.
1209	*/
1210	pThis->pu8PcBios = (uint8_t *)PDMDevHlpMMHeapAlloc(pDevIns, pThis->cbPcBios);
1211	if (pThis->pu8PcBios)
1212	{
1213	rc = RTFileRead(FilePcBios, pThis->pu8PcBios, pThis->cbPcBios, NULL);
1214	if (RT_FAILURE(rc))
1215	{
1216	AssertMsgFailed(("RTFileRead(,,%d,NULL) -> %Rrc\n", pThis->cbPcBios, rc));
1217	MMR3HeapFree(pThis->pu8PcBios);
1218	pThis->pu8PcBios = NULL;
1219	}
1220	rc = VINF_SUCCESS;
1221	}
1222	else
1223	rc = VERR_NO_MEMORY;
1224	}
1225	else
1226	pThis->pu8PcBios = NULL;
1227
1228	/* cleanup */
1229	if (FilePcBios != NIL_RTFILE)
1230	RTFileClose(FilePcBios);
1231
1232	/* If we were unable to get the data from file for whatever reason, fall
1233	back to the built-in ROM image. */
1234	uint32_t fFlags = 0;
1235	if (pThis->pu8PcBios == NULL)
1236	{
1237	pu8PcBiosBinary = g_abPcBiosBinary;
1238	cbPcBiosBinary = g_cbPcBiosBinary;
1239	fFlags = PGMPHYS_ROM_FLAGS_PERMANENT_BINARY;
1240	}
1241	else
1242	{
1243	pu8PcBiosBinary = pThis->pu8PcBios;
1244	cbPcBiosBinary = pThis->cbPcBios;
1245	}
1246
1247	/*
1248	* Map the BIOS into memory.
1249	* There are two mappings:
1250	* 1. 0x000e0000 to 0x000fffff contains the last 128 kb of the bios.
1251	* The bios code might be 64 kb in size, and will then start at 0xf0000.
1252	* 2. 0xfffxxxxx to 0xffffffff contains the entire bios.
1253	*/
1254	AssertReleaseMsg(cbPcBiosBinary >= _64K, ("cbPcBiosBinary=%#x\n", cbPcBiosBinary));
1255	AssertReleaseMsg(RT_ALIGN_Z(cbPcBiosBinary, _64K) == cbPcBiosBinary,
1256	("cbPcBiosBinary=%#x\n", cbPcBiosBinary));
1257	cb = RT_MIN(cbPcBiosBinary, 128 * _1K); /* Effectively either 64 or 128K. */
1258	rc = PDMDevHlpROMRegister(pDevIns, 0x00100000 - cb, cb, &pu8PcBiosBinary[cbPcBiosBinary - cb], cb,
1259	fFlags, "PC BIOS - 0xfffff");
1260	if (RT_FAILURE(rc))
1261	return rc;
1262	rc = PDMDevHlpROMRegister(pDevIns, (uint32_t)-(int32_t)cbPcBiosBinary, cbPcBiosBinary, pu8PcBiosBinary, cbPcBiosBinary,
1263	fFlags, "PC BIOS - 0xffffffff");
1264	if (RT_FAILURE(rc))
1265	return rc;
1266
1267	/*
1268	* Get the LAN boot ROM file name.
1269	*/
1270	rc = CFGMR3QueryStringAlloc(pCfg, "LanBootRom", &pThis->pszLanBootFile);
1271	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1272	{
1273	pThis->pszLanBootFile = NULL;
1274	rc = VINF_SUCCESS;
1275	}
1276	else if (RT_FAILURE(rc))
1277	return PDMDEV_SET_ERROR(pDevIns, rc,
1278	N_("Configuration error: Querying \"LanBootRom\" as a string failed"));
1279	else if (!*pThis->pszLanBootFile)
1280	{
1281	MMR3HeapFree(pThis->pszLanBootFile);
1282	pThis->pszLanBootFile = NULL;
1283	}
1284
1285	uint64_t cbFileLanBoot;
1286	const uint8_t *pu8LanBootBinary = NULL;
1287	uint64_t cbLanBootBinary;
1288
1289	/*
1290	* Determine the LAN boot ROM size, open specified ROM file in the process.
1291	*/
1292	RTFILE FileLanBoot = NIL_RTFILE;
1293	if (pThis->pszLanBootFile)
1294	{
1295	rc = RTFileOpen(&FileLanBoot, pThis->pszLanBootFile,
1296	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE);
1297	if (RT_SUCCESS(rc))
1298	{
1299	rc = RTFileGetSize(FileLanBoot, &cbFileLanBoot);
1300	if (RT_SUCCESS(rc))
1301	{
1302	if (cbFileLanBoot > _64K - (VBOX_LANBOOT_SEG << 4 & 0xffff))
1303	rc = VERR_TOO_MUCH_DATA;
1304	}
1305	}
1306	if (RT_FAILURE(rc))
1307	{
1308	/*
1309	* Ignore failure and fall back to the built-in LAN boot ROM.
1310	*/
1311	Log(("pcbiosConstruct: Failed to open LAN boot ROM file '%s', rc=%Rrc!\n", pThis->pszLanBootFile, rc));
1312	RTFileClose(FileLanBoot);
1313	FileLanBoot = NIL_RTFILE;
1314	MMR3HeapFree(pThis->pszLanBootFile);
1315	pThis->pszLanBootFile = NULL;
1316	}
1317	}
1318
1319	/*
1320	* Get the LAN boot ROM data.
1321	*/
1322	if (pThis->pszLanBootFile)
1323	{
1324	/*
1325	* Allocate buffer for the LAN boot ROM data.
1326	*/
1327	pThis->pu8LanBoot = (uint8_t *)PDMDevHlpMMHeapAllocZ(pDevIns, cbFileLanBoot);
1328	if (pThis->pu8LanBoot)
1329	{
1330	rc = RTFileRead(FileLanBoot, pThis->pu8LanBoot, cbFileLanBoot, NULL);
1331	if (RT_FAILURE(rc))
1332	{
1333	AssertMsgFailed(("RTFileRead(,,%d,NULL) -> %Rrc\n", cbFileLanBoot, rc));
1334	MMR3HeapFree(pThis->pu8LanBoot);
1335	pThis->pu8LanBoot = NULL;
1336	}
1337	rc = VINF_SUCCESS;
1338	}
1339	else
1340	rc = VERR_NO_MEMORY;
1341	}
1342	else
1343	pThis->pu8LanBoot = NULL;
1344
1345	/* cleanup */
1346	if (FileLanBoot != NIL_RTFILE)
1347	RTFileClose(FileLanBoot);
1348
1349	/* If we were unable to get the data from file for whatever reason, fall
1350	* back to the built-in LAN boot ROM image.
1351	*/
1352	if (pThis->pu8LanBoot == NULL)
1353	{
1354	pu8LanBootBinary = g_abNetBiosBinary;
1355	cbLanBootBinary = g_cbNetBiosBinary;
1356	}
1357	else
1358	{
1359	pu8LanBootBinary = pThis->pu8LanBoot;
1360	cbLanBootBinary = cbFileLanBoot;
1361	}
1362
1363	/*
1364	* Map the Network Boot ROM into memory.
1365	* Currently there is a fixed mapping: 0x000d2000 to 0x000dffff contains
1366	* the (up to) 56 kb ROM image. The mapping size is fixed to trouble with
1367	* the saved state (in PGM).
1368	*/
1369	if (pu8LanBootBinary)
1370	{
1371	pThis->cbLanBoot = cbLanBootBinary;
1372
1373	rc = PDMDevHlpROMRegister(pDevIns, VBOX_LANBOOT_SEG << 4,
1374	RT_MAX(cbLanBootBinary, _64K - (VBOX_LANBOOT_SEG << 4 & 0xffff)),
1375	pu8LanBootBinary, cbLanBootBinary,
1376	PGMPHYS_ROM_FLAGS_SHADOWED, "Net Boot ROM");
1377	AssertRCReturn(rc, rc);
1378	}
1379
1380	rc = CFGMR3QueryU8Def(pCfg, "DelayBoot", &pThis->uBootDelay, 0);
1381	if (RT_FAILURE(rc))
1382	return PDMDEV_SET_ERROR(pDevIns, rc,
1383	N_("Configuration error: Querying \"DelayBoot\" as integer failed"));
1384	if (pThis->uBootDelay > 15)
1385	pThis->uBootDelay = 15;
1386
1387	/*
1388	* Call reset plant tables and shadow the PXE ROM.
1389	*/
1390	pcbiosReset(pDevIns);
1391
1392	return VINF_SUCCESS;
1393	}
1394
1395
1396	/**
1397	* The device registration structure.
1398	*/
1399	const PDMDEVREG g_DevicePcBios =
1400	{
1401	/* u32Version */
1402	PDM_DEVREG_VERSION,
1403	/* szName */
1404	"pcbios",
1405	/* szRCMod */
1406	"",
1407	/* szR0Mod */
1408	"",
1409	/* pszDescription */
1410	"PC BIOS Device",
1411	/* fFlags */
1412	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64,
1413	/* fClass */
1414	PDM_DEVREG_CLASS_ARCH_BIOS,
1415	/* cMaxInstances */
1416	1,
1417	/* cbInstance */
1418	sizeof(DEVPCBIOS),
1419	/* pfnConstruct */
1420	pcbiosConstruct,
1421	/* pfnDestruct */
1422	pcbiosDestruct,
1423	/* pfnRelocate */
1424	NULL,
1425	/* pfnIOCtl */
1426	NULL,
1427	/* pfnPowerOn */
1428	NULL,
1429	/* pfnReset */
1430	pcbiosReset,
1431	/* pfnSuspend */
1432	NULL,
1433	/* pfnResume */
1434	NULL,
1435	/* pfnAttach */
1436	NULL,
1437	/* pfnDetach */
1438	NULL,
1439	/* pfnQueryInterface. */
1440	NULL,
1441	/* pfnInitComplete. */
1442	pcbiosInitComplete,
1443	/* pfnPowerOff */
1444	NULL,
1445	/* pfnSoftReset */
1446	NULL,
1447	/* u32VersionEnd */
1448	PDM_DEVREG_VERSION
1449	};

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source: vbox/trunk/src/VBox/Devices/PC/DevPcBios.cpp@ 35351

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