/**
* Construct the SMBIOS and DMI headers table pointer at VM construction and
* reset.
*
* @param pDevIns The device instance data.
*/
void FwCommonPlantSmbiosAndDmiHdrs(PPDMDEVINS pDevIns)
{
struct
{
struct SMBIOSHDR smbios;
struct DMIMAINHDR dmi;
} aBiosHeaders =
{
// The SMBIOS header
{
{ 0x5f, 0x53, 0x4d, 0x5f}, // "_SM_" signature
0x00, // checksum
0x1f, // EPS length, defined by standard
VBOX_SMBIOS_MAJOR_VER, // SMBIOS major version
VBOX_SMBIOS_MINOR_VER, // SMBIOS minor version
VBOX_SMBIOS_MAXSS, // Maximum structure size
0x00, // Entry point revision
{ 0x00, 0x00, 0x00, 0x00, 0x00 } // padding
},
// The DMI header
{
{ 0x5f, 0x44, 0x4d, 0x49, 0x5f }, // "_DMI_" signature
0x00, // checksum
VBOX_DMI_TABLE_SIZE, // DMI tables length
VBOX_DMI_TABLE_BASE, // DMI tables base
VBOX_DMI_TABLE_ENTR, // DMI tables entries
VBOX_DMI_TABLE_VER, // DMI version
}
};
aBiosHeaders.smbios.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.smbios, sizeof(aBiosHeaders.smbios));
aBiosHeaders.dmi.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.dmi, sizeof(aBiosHeaders.dmi));
PDMDevHlpPhysWrite(pDevIns, 0xfe300, &aBiosHeaders, sizeof(aBiosHeaders));
}
/**
* Construct the SMBIOS and DMI headers table pointer at VM construction and
* reset.
*
* @param pDevIns The device instance data.
* @param pHdr Pointer to the header destination.
* @param cbDmiTables Size of all DMI tables planted in bytes.
* @param cNumDmiTables Number of DMI tables planted.
*/
void FwCommonPlantSmbiosAndDmiHdrs(PPDMDEVINS pDevIns, uint8_t *pHdr, uint16_t cbDmiTables, uint16_t cNumDmiTables)
{
RT_NOREF(pDevIns);
struct
{
struct SMBIOSHDR smbios;
struct DMIMAINHDR dmi;
}
aBiosHeaders =
{
// The SMBIOS header
{
{ 0x5f, 0x53, 0x4d, 0x5f}, // "_SM_" signature
0x00, // checksum
0x1f, // EPS length, defined by standard
VBOX_SMBIOS_MAJOR_VER, // SMBIOS major version
VBOX_SMBIOS_MINOR_VER, // SMBIOS minor version
VBOX_SMBIOS_MAXSS, // Maximum structure size
0x00, // Entry point revision
{ 0x00, 0x00, 0x00, 0x00, 0x00 } // padding
},
// The DMI header
{
{ 0x5f, 0x44, 0x4d, 0x49, 0x5f }, // "_DMI_" signature
0x00, // checksum
0, // DMI tables length
VBOX_DMI_TABLE_BASE, // DMI tables base
0, // DMI tables entries
VBOX_DMI_TABLE_VER, // DMI version
}
};
aBiosHeaders.dmi.u16TablesLength = cbDmiTables;
aBiosHeaders.dmi.u16TableEntries = cNumDmiTables;
/* NB: The _SM_ table checksum technically covers both the _SM_ part (16 bytes) and the _DMI_ part
* (further 15 bytes). However, because the _DMI_ checksum must be zero, the _SM_ checksum can
* be calculated independently.
*/
aBiosHeaders.smbios.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.smbios, sizeof(aBiosHeaders.smbios));
aBiosHeaders.dmi.u8Checksum = fwCommonChecksum((uint8_t*)&aBiosHeaders.dmi, sizeof(aBiosHeaders.dmi));
memcpy(pHdr, &aBiosHeaders, sizeof(aBiosHeaders));
}
/**
* Construct the MPS table pointer at VM construction and reset.
*
* Only applicable if IOAPIC is active!
*
* @param pDevIns The device instance data.
*/
void FwCommonPlantMpsFloatPtr(PPDMDEVINS pDevIns)
{
MPSFLOATPTR floatPtr;
floatPtr.au8Signature[0] = '_';
floatPtr.au8Signature[1] = 'M';
floatPtr.au8Signature[2] = 'P';
floatPtr.au8Signature[3] = '_';
floatPtr.u32MPSAddr = VBOX_MPS_TABLE_BASE;
floatPtr.u8Length = 1; /* structure size in paragraphs */
floatPtr.u8SpecRev = 4; /* MPS revision 1.4 */
floatPtr.u8Checksum = 0;
floatPtr.au8Feature[0] = 0;
floatPtr.au8Feature[1] = 0;
floatPtr.au8Feature[2] = 0;
floatPtr.au8Feature[3] = 0;
floatPtr.au8Feature[4] = 0;
floatPtr.u8Checksum = fwCommonChecksum((uint8_t*)&floatPtr, 16);
PDMDevHlpPhysWrite(pDevIns, 0x9fff0, &floatPtr, 16);
}
/**
* Construct the MPS table for implanting as a ROM page.
*
* Only applicable if IOAPIC is active!
*
* See ``MultiProcessor Specification Version 1.4 (May 1997)'':
* ``1.3 Scope
* ...
* The hardware required to implement the MP specification is kept to a
* minimum, as follows:
* * One or more processors that are Intel architecture instruction set
* compatible, such as the CPUs in the Intel486 or Pentium processor
* family.
* * One or more APICs, such as the Intel 82489DX Advanced Programmable
* Interrupt Controller or the integrated APIC, such as that on the
* Intel Pentium 735\\90 and 815\\100 processors, together with a discrete
* I/O APIC unit.''
* and later:
* ``4.3.3 I/O APIC Entries
* The configuration table contains one or more entries for I/O APICs.
* ...
* I/O APIC FLAGS: EN 3:0 1 If zero, this I/O APIC is unusable, and the
* operating system should not attempt to access
* this I/O APIC.
* At least one I/O APIC must be enabled.''
*
* @param pDevIns The device instance data.
* @param pTable Where to write the table.
* @param cbMax The maximum size of the MPS table.
* @param cCpus The number of guest CPUs.
*/
void FwCommonPlantMpsTable(PPDMDEVINS pDevIns, uint8_t *pTable, unsigned cbMax, uint16_t cCpus)
{
/* configuration table */
PMPSCFGTBLHEADER pCfgTab = (MPSCFGTBLHEADER*)pTable;
memcpy(pCfgTab->au8Signature, "PCMP", 4);
pCfgTab->u8SpecRev = 4; /* 1.4 */
memcpy(pCfgTab->au8OemId, "VBOXCPU ", 8);
memcpy(pCfgTab->au8ProductId, "VirtualBox ", 12);
pCfgTab->u32OemTablePtr = 0;
pCfgTab->u16OemTableSize = 0;
pCfgTab->u16EntryCount = 0; /* Incremented as we go. */
pCfgTab->u32AddrLocalApic = 0xfee00000;
pCfgTab->u16ExtTableLength = 0;
pCfgTab->u8ExtTableChecksum = 0;
pCfgTab->u8Reserved = 0;
uint32_t u32Eax, u32Ebx, u32Ecx, u32Edx;
uint32_t u32CPUSignature = 0x0520; /* default: Pentium 100 */
uint32_t u32FeatureFlags = 0x0001; /* default: FPU */
PDMDevHlpGetCpuId(pDevIns, 0, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
if (u32Eax >= 1)
{
PDMDevHlpGetCpuId(pDevIns, 1, &u32Eax, &u32Ebx, &u32Ecx, &u32Edx);
u32CPUSignature = u32Eax & 0xfff;
/* Local APIC will be enabled later so override it here. Since we provide
* an MP table we have an IOAPIC and therefore a Local APIC. */
u32FeatureFlags = u32Edx | X86_CPUID_FEATURE_EDX_APIC;
}
/* Construct MPS table for each VCPU. */
PMPSPROCENTRY pProcEntry = (PMPSPROCENTRY)(pCfgTab+1);
for (int i = 0; i < cCpus; i++)
{
pProcEntry->u8EntryType = 0; /* processor entry */
pProcEntry->u8LocalApicId = i;
pProcEntry->u8LocalApicVersion = 0x14;
pProcEntry->u8CPUFlags = (i == 0 ? 2 /* bootstrap processor */ : 0 /* application processor */) | 1 /* enabled */;
pProcEntry->u32CPUSignature = u32CPUSignature;
pProcEntry->u32CPUFeatureFlags = u32FeatureFlags;
pProcEntry->u32Reserved[0] =
pProcEntry->u32Reserved[1] = 0;
pProcEntry++;
pCfgTab->u16EntryCount++;
}
uint32_t iBusIdIsa = 0;
uint32_t iBusIdPci0 = 1;
/* ISA bus */
PMPSBUSENTRY pBusEntry = (PMPSBUSENTRY)pProcEntry;
pBusEntry->u8EntryType = 1; /* bus entry */
pBusEntry->u8BusId = iBusIdIsa; /* this ID is referenced by the interrupt entries */
memcpy(pBusEntry->au8BusTypeStr, "ISA ", 6);
pBusEntry++;
pCfgTab->u16EntryCount++;
/* PCI bus */
pBusEntry->u8EntryType = 1; /* bus entry */
pBusEntry->u8BusId = iBusIdPci0; /* this ID can be referenced by the interrupt entries */
memcpy(pBusEntry->au8BusTypeStr, "PCI ", 6);
pCfgTab->u16EntryCount++;
/* I/O-APIC.
* MP spec: "The configuration table contains one or more entries for I/O APICs.
* ... At least one I/O APIC must be enabled." */
PMPSIOAPICENTRY pIOAPICEntry = (PMPSIOAPICENTRY)(pBusEntry+1);
uint16_t iApicId = 0;
pIOAPICEntry->u8EntryType = 2; /* I/O-APIC entry */
pIOAPICEntry->u8Id = iApicId; /* this ID is referenced by the interrupt entries */
pIOAPICEntry->u8Version = 0x11;
pIOAPICEntry->u8Flags = 1 /* enable */;
pIOAPICEntry->u32Addr = 0xfec00000;
pCfgTab->u16EntryCount++;
/* Interrupt tables */
/* Bus vectors */
/* Note: The PIC is currently not routed to the I/O APIC. Therefore we skip
* pin 0 on the I/O APIC.
*/
PMPSIOIRQENTRY pIrqEntry = (PMPSIOIRQENTRY)(pIOAPICEntry+1);
for (int iPin = 1; iPin < 16; iPin++, pIrqEntry++)
{
pIrqEntry->u8EntryType = 3; /* I/O interrupt entry */
/*
* 0 - INT, vectored interrupt,
* 3 - ExtINT, vectored interrupt provided by PIC
* As we emulate system with both APIC and PIC, it's needed for their coexistence.
*/
pIrqEntry->u8Type = (iPin == 0) ? 3 : 0;
pIrqEntry->u16Flags = 0; /* polarity of APIC I/O input signal = conforms to bus,
trigger mode = conforms to bus */
pIrqEntry->u8SrcBusId = iBusIdIsa; /* ISA bus */
/* IRQ0 mapped to pin 2, other are identity mapped */
/* If changing, also update PDMIsaSetIrq() and MADT */
pIrqEntry->u8SrcBusIrq = (iPin == 2) ? 0 : iPin; /* IRQ on the bus */
pIrqEntry->u8DstIOAPICId = iApicId; /* destination IO-APIC */
pIrqEntry->u8DstIOAPICInt = iPin; /* pin on destination IO-APIC */
pCfgTab->u16EntryCount++;
}
/* Local delivery */
pIrqEntry->u8EntryType = 4; /* Local interrupt entry */
pIrqEntry->u8Type = 3; /* ExtINT */
pIrqEntry->u16Flags = (1 << 2) | 1; /* active-high, edge-triggered */
pIrqEntry->u8SrcBusId = iBusIdIsa;
pIrqEntry->u8SrcBusIrq = 0;
pIrqEntry->u8DstIOAPICId = 0xff;
pIrqEntry->u8DstIOAPICInt = 0;
pIrqEntry++;
pCfgTab->u16EntryCount++;
pIrqEntry->u8EntryType = 4; /* Local interrupt entry */
pIrqEntry->u8Type = 1; /* NMI */
pIrqEntry->u16Flags = (1 << 2) | 1; /* active-high, edge-triggered */
pIrqEntry->u8SrcBusId = iBusIdIsa;
pIrqEntry->u8SrcBusIrq = 0;
pIrqEntry->u8DstIOAPICId = 0xff;
pIrqEntry->u8DstIOAPICInt = 1;
pIrqEntry++;
pCfgTab->u16EntryCount++;
pCfgTab->u16Length = (uint8_t*)pIrqEntry - pTable;
pCfgTab->u8Checksum = fwCommonChecksum(pTable, pCfgTab->u16Length);
AssertMsg(pCfgTab->u16Length < cbMax,
("VBOX_MPS_TABLE_SIZE=%d, maximum allowed size is %d",
pCfgTab->u16Length, cbMax));
}