/***************************************************************************** * * Copyright (C) 2012 Advanced Micro Devices, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of Advanced Micro Devices, Inc. nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * ***************************************************************************/ #include "Platform.h" REG8MASK sbPorInitPciTable[] = { // SMBUS Device(Bus 0, Dev 20, Func 0) {0x00, SMBUS_BUS_DEV_FUN, 0}, {SB_SMBUS_REGD0+2, 0x00, 0x01}, {SB_SMBUS_REG40, 0x00, 0x44}, {SB_SMBUS_REG40+1, 0xFF, 0xE9}, //Set smbus pci config 0x40[14]=1, This bit is used for internal bus flow control. {SB_SMBUS_REG64, 0x00, 0xBF}, //SB_SMBUS_REG64[13]=1, delays back to back interrupts to the CPU {SB_SMBUS_REG64+1, 0x00, 0x78}, {SB_SMBUS_REG64+2, ~(UINT8)BIT6, 0x9E}, {SB_SMBUS_REG64+3, 0x0F, 0x02}, {SB_SMBUS_REG68+1, 0x00, 0x90}, {SB_SMBUS_REG6C, 0x00, 0x20}, {SB_SMBUS_REG78, 0x00, 0xFF}, {SB_SMBUS_REG04, 0x00, 0x07}, {SB_SMBUS_REG04+1, 0x00, 0x04}, {SB_SMBUS_REGE1, 0x00, 0x99}, //RPR recommended setting, Sections "SMBUS Pci Config" & "IMC Access Control" {SB_SMBUS_REGAC, ~(UINT8)BIT4, BIT1}, {SB_SMBUS_REG60+2, ~(UINT8)(BIT1+BIT0) , 0x24}, // Disabling Legacy USB Fast SMI# Smbus_PCI_config 0x62 [5] = 1. Legacy USB // can request SMI# to be sent out early before IO completion. // Some applications may have problems with this feature. The BIOS should set this bit // to 1 to disable the feature. Enabling Legacy Interrupt Smbus_PCI_Config 0x62[2]=1. {0xFF, 0xFF, 0xFF}, // LPC Device(Bus 0, Dev 20, Func 3) {0x00, LPC_BUS_DEV_FUN, 0}, {SB_LPC_REG40, 0x00, 0x04}, {SB_LPC_REG48, 0x00, 0x07}, {SB_LPC_REG4A, 0x00, 0x20}, // Port Enable for IO Port 80h. {SB_LPC_REG78, ~(UINT8)BIT0, 0x00}, {SB_LPC_REG7C, 0x00, 0x05}, {SB_LPC_REGB8+3, ~(UINT8)BIT0, BIT7+BIT6+BIT5+BIT3+BIT0}, //RPR recommended setting,Section "IO / Mem Decoding" & "SPI bus" {0xFF, 0xFF, 0xFF}, // P2P Bridge(Bus 0, Dev 20, Func 4) {0x00, SBP2P_BUS_DEV_FUN, 0}, {SB_P2P_REG40, 0x00, 0x26}, // Enabling PCI-bridge subtractive decoding & PCI Bus 64-byte DMA Read Access {SB_P2P_REG4B, 0xFF, BIT6+BIT7+BIT4}, {SB_P2P_REG1C, 0x00, 0x11}, {SB_P2P_REG1D, 0x00, 0x11}, {SB_P2P_REG04, 0x00, 0x21}, {SB_P2P_REG50, 0x02, 0x01}, // PCI Bridge upstream dual address window {0xFF, 0xFF, 0xFF}, }; REG8MASK sbA13PorInitPciTable[] = { // SMBUS Device(Bus 0, Dev 20, Func 0) {0x00, SMBUS_BUS_DEV_FUN, 0}, {SB_SMBUS_REG43, ~(UINT8)BIT3, 0x00}, //Make some hidden registers of smbus visible. {SB_SMBUS_REG38, (UINT8)~BIT7, 00}, {SB_SMBUS_REGAC+1, ~(UINT8)BIT5, 0}, //Enable SATA test/enhancement mode {SB_SMBUS_REG43, 0xFF, BIT3}, //Make some hidden registers of smbus invisible. {0xFF, 0xFF, 0xFF}, }; REG8MASK sbA14PorInitPciTable[] = { // LPC Device(Bus 0, Dev 20, Func 3) {0x00, LPC_BUS_DEV_FUN, 0}, {SB_LPC_REG8C+2, ~(UINT8)BIT1, 00}, {0xFF, 0xFF, 0xFF}, }; REG8MASK sbPorPmioInitTbl[] = { // index andmask ormask {SB_PMIO_REG67, 0xFF, 0x02}, {SB_PMIO_REG37, 0xFF, 0x04}, // Configure pciepme as rising edge {SB_PMIO_REG50, 0x00, 0xE0}, // Enable CPU_STP (except S5) & PCI_STP {SB_PMIO_REG60, 0xFF, 0x20}, // Enable Speaker {SB_PMIO_REG65, (UINT8)~(BIT4+BIT7), 0x00},// Clear PM_IO 0x65[4] UsbResetByPciRstEnable to avoid S3 reset to reset USB {SB_PMIO_REG55, ~(UINT8)BIT6, 0x07}, // Select CIR wake event to ACPI.GEVENT[23] & Clear BIT6 SoftPciRst for safety {SB_PMIO_REG66, 0xFF, BIT5}, // Configure keyboard reset to generate pci reset {SB_PMIO_REGB2, 0xFF, BIT7}, {SB_PMIO_REG0E, 0xFF, BIT3}, // Enable ACPI IO decoding {SB_PMIO_REGD7, 0xF6, 0x80}, {SB_PMIO_REG7C, 0xFF, BIT4}, // enable RTC AltCentury register {SB_PMIO_REG75, 0xC0, 0x05}, // PME_TURN_OFF_MSG during ASF shutdown {SB_PMIO_REG52, 0xC0, 0x08}, {SB_PMIO_REG8B, 0x00, 0x10}, {SB_PMIO_REG69, 0xF9, 0x01 << 1}, // [Updated RPR] Set default WDT resolution to 10ms }; REG8MASK sbA13PorPmioInitTbl[]={ // index andmask ormask {SB_PMIO_REGD7, 0xFF, BIT5+BIT0}, //Fixes for TT SB00068 & SB01054 (BIT5 & BIT0 correspondingly) {SB_PMIO_REGBB, (UINT8)~BIT7, BIT6+BIT5}, //Fixes for TT SB00866 & SB00696 (BIT6 & BIT5 correspondingly) // Always clear [7] to begin with SP5100 C1e disabled // {SB_PMIO_REG65, 0xFF, BIT7}, // {SB_PMIO_REG75, 0xC0, 0x01}, // PME_TURN_OFF_MSG during ASF shutdown // {SB_PMIO_REG52, 0xC0, 0x02}, }; void sbPowerOnInit (AMDSBCFG *pConfig){ UINT8 dbVar0, dbVar1, dbValue; UINT16 dwTempVar; BUILDPARAM *pBuildOptPtr; TRACE((DMSG_SB_TRACE, "CIMx - Entering sbPowerOnInit \n")); setRevisionID(); ReadPCI(((SATA_BUS_DEV_FUN << 16) + SB_SATA_REG02), AccWidthUint16 | S3_SAVE, &dwTempVar); if (dwTempVar == SB750_SATA_DEFAULT_DEVICE_ID) RWPCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG9C, AccWidthUint8 | S3_SAVE, 0xFF, 0x01); // Set A-Link bridge access address. This address is set at device 14h, function 0, // register 0f0h. This is an I/O address. The I/O address must be on 16-byte boundry. RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REGF0, AccWidthUint32, 00, ALINK_ACCESS_INDEX); writeAlink(0x80000004, 0x04); // RPR 3.3 Enabling upstream DMA Access writeAlink(0x30, 0x10); //AXINDC 0x10[9]=1, Enabling Non-Posted memory write for K8 platform. writeAlink(0x34, readAlink(0x34) | BIT9); if (!(pConfig->ResetCpuOnSyncFlood)){ //Enable reset on sync flood writeAlink( (UINT32)( ((UINT32)SB_AB_REG10050) | ((UINT32)ABCFG << 30)), (UINT32)( readAlink((((UINT32)SB_AB_REG10050) | ((UINT32)ABCFG << 30))) | ((UINT32)BIT2) )); } pBuildOptPtr = &(pConfig->BuildParameters); WritePCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG90, AccWidthUint32 | S3_SAVE, &(pBuildOptPtr->Smbus0BaseAddress) ); dwTempVar = pBuildOptPtr->Smbus1BaseAddress & (UINT16)~BIT0; if( dwTempVar != 0 ){ RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG58, AccWidthUint16 | S3_SAVE, 00, (dwTempVar|BIT0)); // Disable ASF Slave controller on SB700 rev A15. if (getRevisionID() == SB700_A15) { RWIO((dwTempVar+0x0D), AccWidthUint8, (UINT8)~BIT6, BIT6); } } WritePCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG64, AccWidthUint16 | S3_SAVE, &(pBuildOptPtr->SioPmeBaseAddress)); RWPCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA0, AccWidthUint32 | S3_SAVE, 0x001F,(pBuildOptPtr->SpiRomBaseAddress)); WritePMIO(SB_PMIO_REG20, AccWidthUint16, &(pBuildOptPtr->AcpiPm1EvtBlkAddr)); WritePMIO(SB_PMIO_REG22, AccWidthUint16, &(pBuildOptPtr->AcpiPm1CntBlkAddr)); WritePMIO(SB_PMIO_REG24, AccWidthUint16, &(pBuildOptPtr->AcpiPmTmrBlkAddr)); WritePMIO(SB_PMIO_REG26, AccWidthUint16, &(pBuildOptPtr->CpuControlBlkAddr)); WritePMIO(SB_PMIO_REG28, AccWidthUint16, &(pBuildOptPtr->AcpiGpe0BlkAddr)); WritePMIO(SB_PMIO_REG2A, AccWidthUint16, &(pBuildOptPtr->SmiCmdPortAddr)); WritePMIO(SB_PMIO_REG2C, AccWidthUint16, &(pBuildOptPtr->AcpiPmaCntBlkAddr)); RWPMIO(SB_PMIO_REG2E, AccWidthUint16, 0x00,(pBuildOptPtr->SmiCmdPortAddr)+8); WritePMIO(SB_PMIO_REG6C, AccWidthUint32, &(pBuildOptPtr->WatchDogTimerBase)); //Program power on pci init table programPciByteTable( (REG8MASK*)FIXUP_PTR(&sbPorInitPciTable[0]), sizeof(sbPorInitPciTable)/sizeof(REG8MASK) ); //Program power on pmio init table programPmioByteTable( (REG8MASK *)FIXUP_PTR(&sbPorPmioInitTbl[0]), (sizeof(sbPorPmioInitTbl)/sizeof(REG8MASK)) ); dbValue = 0x00; ReadIO (SB_IOMAP_REGC14, AccWidthUint8, &dbValue); dbValue &= 0xF3; WriteIO (SB_IOMAP_REGC14, AccWidthUint8, &dbValue); dbValue = 0x0A; WriteIO (SB_IOMAP_REG70, AccWidthUint8, &dbValue); ReadIO (SB_IOMAP_REG71, AccWidthUint8, &dbValue); dbValue &= 0xEF; WriteIO (SB_IOMAP_REG71, AccWidthUint8, &dbValue); if (getRevisionID() >= SB700_A13){ programPciByteTable( (REG8MASK*)FIXUP_PTR(&sbA13PorInitPciTable[0]), sizeof(sbA13PorInitPciTable)/sizeof(REG8MASK) ); programPmioByteTable( (REG8MASK *)FIXUP_PTR(&sbA13PorPmioInitTbl[0]), (sizeof(sbA13PorPmioInitTbl)/sizeof(REG8MASK)) ); } if ((getRevisionID() >= SB700_A14) ) programPciByteTable( (REG8MASK*)FIXUP_PTR(&sbA14PorInitPciTable[0]), sizeof(sbA14PorInitPciTable)/sizeof(REG8MASK) ); if ( (getRevisionID() >= SB700_A14) && ( (pConfig->TimerClockSource == 1) || (pConfig->TimerClockSource == 2) )){ ReadPMIO(SB_PMIO_REGD4, AccWidthUint8, &dbVar1); if (!(dbVar1 & BIT6)){ RWPMIO(SB_PMIO_REGD4, AccWidthUint8, 0xFF, BIT6); pConfig->RebootRequired=1; } } if (getRevisionID() > SB700_A11) { if (pConfig->PciClk5 == 1) RWPMIO(SB_PMIO_REG41, AccWidthUint8, ~(UINT32)BIT1, BIT1); // Enabled PCICLK5 for A12 } dbVar0 = (pBuildOptPtr->BiosSize + 1) & 7; if (dbVar0 > 4) { dbVar0 = 0; } //KZ [061811]-It's used wrong BIOS SIZE for coreboot. RWPCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG6C, AccWidthUint8 | S3_SAVE, 0x00, 0xF8 << dbVar0); if (pConfig->Spi33Mhz) //spi reg0c[13:12] to 01h to run spi 33Mhz in system bios RWMEM((pBuildOptPtr->SpiRomBaseAddress)+SB_SPI_MMIO_REG0C,AccWidthUint16 | S3_SAVE, ~(UINT32)(BIT13+BIT12), BIT12); //SB internal spread spectrum settings. A reboot is required if the spread spectrum settings have to be changed //from the existing value. ReadPMIO(SB_PMIO_REG42, AccWidthUint8, &dbVar0); if (pConfig->SpreadSpectrum != (dbVar0 >> 7) ) pConfig->RebootRequired = 1; if (pConfig->SpreadSpectrum) RWPMIO(SB_PMIO_REG42, AccWidthUint8, ~(UINT32)BIT7, BIT7); else RWPMIO(SB_PMIO_REG42, AccWidthUint8, ~(UINT32)BIT7, 0); if ( !(pConfig->S3Resume) ){ //To detect whether internal clock chip is used, do the following procedure //set PMIO_B2[7]=1, then read PMIO_B0[4]; if it is 1, we are strapped to CLKGEN mode. //if it is 0, we are using clock chip on board. RWPMIO(SB_PMIO_REGB2, AccWidthUint8, 0xFF, BIT7); //Do the following programming only for SB700-A11. //1. Set PMIO_B2 [7]=1 and read B0 and B1 and save those values. //2. Set PMIO_B2 [7]=0 //3. Write the saved values from step 1, back to B0 and B1. //4. Set PMIO_B2 [6]=1. ReadPMIO(SB_PMIO_REGB0, AccWidthUint16, &dwTempVar); if (getRevisionID() == SB700_A11){ RWPMIO(SB_PMIO_REGB2, AccWidthUint8, ~(UINT32)BIT7, 00); WritePMIO(SB_PMIO_REGB0, AccWidthUint16, &dwTempVar); RWPMIO(SB_PMIO_REGB2, AccWidthUint8, 0xFF, BIT6); } if (!(dwTempVar & BIT4)){ RWPMIO(SB_PMIO_REGD0, AccWidthUint8, ~(UINT32)BIT0, 0); //Enable PLL2 //we are in external clock chip on the board if (pConfig->UsbIntClock == CIMX_OPTION_ENABLED){ //Configure usb clock to come from internal PLL RWPMIO(SB_PMIO_REGD2, AccWidthUint8, 0xFF, BIT3); //Enable 48Mhz clock from PLL2 RWPMIO(SB_PMIO_REGBD, AccWidthUint8, ~(UINT32)BIT4, BIT4); //Tell USB PHY to use internal 48Mhz clock from PLL2 } else{ //Configure usb clock to come from external clock RWPMIO(SB_PMIO_REGBD, AccWidthUint8, ~(UINT32)BIT4, 0); //Tell USB PHY to use external 48Mhz clock from PLL2 RWPMIO(SB_PMIO_REGD2, AccWidthUint8, ~(UINT32)BIT3, 00); //Disable 48Mhz clock from PLL2 } } else{ //we are using internal clock chip on this board if (pConfig->UsbIntClock == CIMX_OPTION_ENABLED){ //Configure usb clock to come from internal PLL RWPMIO(SB_PMIO_REGD2, AccWidthUint8, ~(UINT32)BIT3, 0); //Enable 48Mhz clock from PLL2 RWPMIO(SB_PMIO_REGBD, AccWidthUint8, ~(UINT32)BIT4, BIT4); //Tell USB PHY to use internal 48Mhz clock from PLL2 } else{ //Configure usb clock to come from external clock RWPMIO(SB_PMIO_REGBD, AccWidthUint8, ~(UINT32)BIT4, 0); //Tell USB PHY to use external 48Mhz clock from PLL2 RWPMIO(SB_PMIO_REGD2, AccWidthUint8, ~(UINT32)BIT3, BIT3); //Disable 48Mhz clock from PLL2 } } ReadPMIO(SB_PMIO_REG43, AccWidthUint8, &dbVar0); RWPMIO(SB_PMIO_REG43, AccWidthUint8, ~(UINT32)(BIT6+BIT5+BIT0), (pConfig->UsbIntClock << 5)); //Check whether our usb clock settings changed compared to previous boot, if yes then we need to reboot. if ( (dbVar0 & BIT0) || ( (pConfig->UsbIntClock) != ((dbVar0 & (BIT6+BIT5)) >> 5)) ) pConfig->RebootRequired = 1; } if (pBuildOptPtr->LegacyFree) //if LEGACY FREE system RWPCI(((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG44), AccWidthUint32 | S3_SAVE, 00, 0x0003C000); else RWPCI(((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG44), AccWidthUint32 | S3_SAVE, 00, 0xFF03FFD5); if ( (getRevisionID() == SB700_A14) || (getRevisionID() == SB700_A13)){ RWPMIO(SB_PMIO_REG65, AccWidthUint8, 0xFF, BIT7); RWPMIO(SB_PMIO_REG75, AccWidthUint8, 0xC0, BIT0); RWPMIO(SB_PMIO_REG52, AccWidthUint8, 0xC0, BIT1); } if (getRevisionID() >= SB700_A15) { RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG40+3, AccWidthUint8 | S3_SAVE, ~(UINT32)(BIT3), 0); //Enable unconditional shutdown fix in A15 RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG38+1, AccWidthUint8 | S3_SAVE, 0xFF, BIT4); RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG40+3, AccWidthUint8 | S3_SAVE, 0xFF, BIT3); RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG06+1, AccWidthUint8 | S3_SAVE, 0xFF, 0xD0); } // [Updated RPR] Set ImcHostSmArbEn(SMBUS:0xE1[5]) only when IMC is enabled if (isEcPresent()) { RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REGE1, AccWidthUint8 | S3_SAVE, 0xFF, BIT5); } //According to AMD Family 15h Models 00h-0fh processor BKDG section 2.12.8 LDTSTOP requirement // to program VID/FID LDTSTP# duration selection register AMDFamily15CpuLdtStopReq(); #ifndef NO_EC_SUPPORT ecPowerOnInit(pBuildOptPtr, pConfig); #endif } void setRevisionID(void){ UINT8 dbVar0, dbVar1; ReadPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG08), AccWidthUint8, &dbVar0); ReadPMIO(SB_PMIO_REG53, AccWidthUint8, &dbVar1); if ( (dbVar0 == 0x39) && (dbVar1 & BIT6) && !(dbVar1 & BIT7)){ RWPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG40), AccWidthUint8, ~(UINT32)BIT0, BIT0); RWPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG08), AccWidthUint8, 00, SB700_A12); RWPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG40), AccWidthUint8, ~(UINT32)BIT0, 00); } ReadPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG08), AccWidthUint8, &dbVar0); } UINT8 getRevisionID(void){ UINT8 dbVar0; ReadPCI(((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG08), AccWidthUint8, &dbVar0); return dbVar0; } void AMDFamily15CpuLdtStopReq(void) { CPUID_DATA CpuId; CPUID_DATA CpuId_Brand; UINT8 dbVar0, dbVar1, dbVar2; //According to AMD Family 15h Models 00h-0fh processor BKDG section 2.12.8 LDTSTOP requirement //to program VID/FID LDTSTP# duration selection register //If any of the following system configuration properties are true LDTSTP# assertion time required by the processor is 10us: // 1. Any link in the system operating at a Gen 1 Frequency. // 2. Also for server platform (G34/C32) set PM_REG8A[6:4]=100b (16us) CpuidRead (0x01, &CpuId); CpuidRead (0x80000001, &CpuId_Brand); //BrandID, to read socket type if ((CpuId.REG_EAX & 0xFFFFFF00) == 0x00600F00) { //Program to Gen 3 default value - 001b RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x10); //set [6:4]=001b //Any link in the system operating at a Gen 1 Frequency. //Check Link 0 - Link connected regsister ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REG98), AccWidthUint8, &dbVar2); dbVar2 = dbVar2 & 0x01; if(dbVar2 == 0x01) { //Check Link 0 - Link Frequency Freq[4:0] ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REG89), AccWidthUint8, &dbVar0); ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REG9C), AccWidthUint8, &dbVar1); dbVar0 = dbVar0 & 0x0F; //Freq[3:0] dbVar1 = dbVar1 & 0x01; //Freq[4] dbVar0 = (dbVar1 << 4) | dbVar0; //Freq[4:0] //Value 6 or less indicate Gen1 if(dbVar0 <= 0x6) { RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x40); //set [6:4]=100b } } //Check Link 1 - Link connected regsister ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGB8), AccWidthUint8, &dbVar2); dbVar2 = dbVar2 & 0x01; if(dbVar2 == 0x01) { //Check Link 1 - Link Frequency Freq[4:0] ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGA9), AccWidthUint8, &dbVar0); ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGBC), AccWidthUint8, &dbVar1); dbVar0 = dbVar0 & 0x0F; //Freq[3:0] dbVar1 = dbVar1 & 0x01; //Freq[4] dbVar0 = (dbVar1 << 4) | dbVar0; //Freq[4:0] //Value 6 or less indicate Gen1 if(dbVar0 <= 0x6) { RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x40); //set [6:4]=100b } } //Check Link 2 - Link connected regsister ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGD8), AccWidthUint8, &dbVar2); dbVar2 = dbVar2 & 0x01; if(dbVar2 == 0x01) { //Check Link 2 - Link Frequency Freq[4:0] ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGC9), AccWidthUint8, &dbVar0); ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGDC), AccWidthUint8, &dbVar1); dbVar0 = dbVar0 & 0x0F; //Freq[3:0] dbVar1 = dbVar1 & 0x01; //Freq[4] dbVar0 = (dbVar1 << 4) | dbVar0; //Freq[4:0] //Value 6 or less indicate Gen1 if(dbVar0 <= 0x6) { RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x40); //set [6:4]=100b } } //Check Link 3 - Link connected regsister ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGF8), AccWidthUint8, &dbVar2); dbVar2 = dbVar2 & 0x01; if(dbVar2 == 0x01) { //Check Link 3 - Link Frequency Freq[4:0] ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGE9), AccWidthUint8, &dbVar0); ReadPCI(((HT_LINK_BUS_DEV_FUN << 16) + HT_LINK_REGFC), AccWidthUint8, &dbVar1); dbVar0 = dbVar0 & 0x0F; //Freq[3:0] dbVar1 = dbVar1 & 0x01; //Freq[4] dbVar0 = ((dbVar1 << 4) | dbVar0); //Freq[4:0] //Value 6 or less indicate Gen1 if(dbVar0 <= 0x6) { RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x40); //set [6:4]=100b } } // Server platform (G34/C32) set PM_REG8A[6:4]=100b (16us) if(((CpuId_Brand.REG_EBX & 0xF0000000) == 0x30000000) || ((CpuId_Brand.REG_EBX & 0xF0000000) == 0x50000000)) { RWPMIO(SB_PMIO_REG8A, AccWidthUint8, 0x8F, 0x40); //set [6:4]=100b } } }