1 /*****************************************************************************
3 * Copyright (C) 2012 Advanced Micro Devices, Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * * Neither the name of Advanced Micro Devices, Inc. nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 ***************************************************************************/
38 //Read the EC configuration register base address from LPCCfg_A4[15:1]
39 //Write 0x5A to the EC config index register to unlock the access
40 //Write 0x20 to the EC config index register to select the device ID register
41 //Read the value of device ID register from the EC config data register
42 //If the value read is 0xB7, then EC is enabled.
43 //Write 0xA5 to re-lock the EC config index register if EC is enabled.
45 ReadPCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA4, AccWidthUint16 | S3_SAVE, &dwVar0);
47 RWIO(dwVar0, AccWidthUint8, 0, 0x5A);
48 RWIO(dwVar0, AccWidthUint8, 0, 0x20);
49 ReadIO(dwVar0+1, AccWidthUint8, &dbFlag);
50 RWIO(dwVar0, AccWidthUint8, 0, 0xA5);
52 return ( dbFlag == 0xB7);
57 SB_INFORMATION *sbInfo){
61 ReadPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG02, AccWidthUint16 | S3_SAVE, &dwDevId);
62 ReadPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG08, AccWidthUint8 | S3_SAVE, &dbRev);
63 sbInfo->sbModelMask = SB_MODEL_UNKNOWN;
64 if ( (dwDevId == SB7XX_DEVICE_ID) && (dbRev <= SB_Rev_Sb7xx_A14) ){
65 sbInfo->sbModelMask |= SB_MODEL_SB700;
66 sbInfo->sbModelMask |= SB_MODEL_SR5690;
67 sbInfo->sbRev = dbRev;
68 ReadPCI((LPC_BUS_DEV_FUN << 16) + SB_LPC_REG9C, AccWidthUint8 | S3_SAVE, &dbRev);
70 sbInfo->sbModelMask |= SB_MODEL_SB750;
72 sbInfo->sbModelMask |= SB_MODEL_SB710;
80 SB_CAPABILITY_ITEM sbCapabilityItem
83 SB_CAPABILITY_SETTING sbCapSetting=SB_UNKNOWN;
85 RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG43, AccWidthUint8 | S3_SAVE, ~(UINT32)BIT3, 00);
86 ReadPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG10, AccWidthUint32, &ddTemp0);
88 if (sbCapabilityItem < Sb_Unknown_Capability)
89 sbCapSetting = ((ddTemp0 >> (sbCapabilityItem << 1) ) & 0x03);
91 RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG43, AccWidthUint8 | S3_SAVE, 0xFF, BIT3);
98 SB_CAPABILITY_ITEM sbCapabilityItem, SB_CAPABILITY_SETTING sbCapSetting
102 RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG43, AccWidthUint8 | S3_SAVE, ~(UINT32)BIT3, 00);
103 ReadPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG10, AccWidthUint32, &ddTemp0);
104 if ( (sbCapabilityItem < Sb_Unknown_Capability) & (sbCapSetting < Sb_Cap_Setting_Unknown) )
105 ddTemp0 = (ddTemp0 & ~(0x03 << (sbCapabilityItem << 1))) | ( (sbCapSetting & 0x03) << (sbCapabilityItem << 1));
106 WritePCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG10, AccWidthUint32, &ddTemp0);
107 RWPCI((SMBUS_BUS_DEV_FUN << 16) + SB_SMBUS_REG43, AccWidthUint8 | S3_SAVE, 0xFF, BIT3);