| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 Advanced Micro Devices, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "agesawrapper.h" |
| #include "amdlib.h" |
| #include "BiosCallOuts.h" |
| #include "Ids.h" |
| #include "OptionsIds.h" |
| #include "heapManager.h" |
| #include <northbridge/amd/agesa/family15/dimmSpd.h> |
| #include <arch/io.h> |
| |
| #ifdef __PRE_RAM__ |
| /* These defines are used to select the appropriate socket for the SPD read |
| * because this is a multi-socket design. |
| */ |
| #define PCI_REG_GPIO_48_47_46_37_CNTRL (0xA6) |
| #define PCI_REG_GPIO_52_to_49_CNTRL (0x50) |
| #define GPIO_OUT_BIT_GPIO48 (BIT3) |
| #define GPIO_OUT_BIT_GPIO49 (BIT0) |
| #define GPIO_OUT_ENABLE_BIT_GPIO48 (BIT7) |
| #define GPIO_OUT_ENABLE_BIT_GPIO49 (BIT4) |
| |
| static UINT8 select_socket(UINT8 socket_id) |
| { |
| device_t sm_dev = PCI_DEV(0, 0x14, 0); //SMBUS |
| UINT8 value = 0; |
| UINT8 gpio52_to_49 = 0; |
| |
| /* Configure GPIO49,48 to select the desired socket |
| * GPIO49,48 control the IDTQS3253 S1,S0 |
| * S1 S0 true table |
| * 0 0 channel 0 |
| * 0 1 channel 1 |
| * 1 0 channel 2 - Socket 0 |
| * 1 1 channel 3 - Socket 1 |
| * Note: Above is abstracted from Schematic. But actually it seems to be other way. |
| * 1 0 channel 2 - Socket 1 |
| * 1 1 channel 3 - Socket 0 |
| * Note: The DIMMs need to be plugged in from the farthest slot for each channel. |
| */ |
| gpio52_to_49 = pci_read_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL); |
| value = gpio52_to_49 | GPIO_OUT_BIT_GPIO49; // Output of GPIO49 is always forced to "1" |
| value &= ~(GPIO_OUT_ENABLE_BIT_GPIO49); // 0=Output Enabled, 1=Tristate |
| pci_write_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL, value); |
| |
| value = pci_read_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL); |
| value &= ~(GPIO_OUT_BIT_GPIO48); |
| value |= (~(socket_id & 1)) << 3; // Output of GPIO48 is inverse of SocketId |
| value &= ~(GPIO_OUT_ENABLE_BIT_GPIO48); // 0=Output Enabled, 1=Tristate |
| pci_write_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL, value); |
| |
| return gpio52_to_49; |
| } |
| |
| static void restore_socket(UINT8 original_value) |
| { |
| device_t sm_dev = PCI_DEV(0, 0x14, 0); //SMBUS |
| pci_write_config8(sm_dev, PCI_REG_GPIO_52_to_49_CNTRL, original_value); |
| |
| // TODO: Restore previous GPIO48 configurations? |
| //pci_write_config8(sm_dev, PCI_REG_GPIO_48_47_46_37_CNTRL, gpio48_47_46_37_save); |
| } |
| #endif |
| |
| STATIC BIOS_CALLOUT_STRUCT BiosCallouts[] = |
| { |
| {AGESA_ALLOCATE_BUFFER, BiosAllocateBuffer }, |
| {AGESA_DEALLOCATE_BUFFER, BiosDeallocateBuffer }, |
| {AGESA_LOCATE_BUFFER, BiosLocateBuffer }, |
| {AGESA_DO_RESET, agesa_Reset }, |
| {AGESA_READ_SPD, BiosReadSpd }, |
| {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, |
| {AGESA_RUNFUNC_ONAP, BiosRunFuncOnAp }, |
| {AGESA_GET_IDS_INIT_DATA, agesa_EmptyIdsInitData }, |
| {AGESA_HOOKBEFORE_DQS_TRAINING, agesa_NoopSuccess }, |
| {AGESA_HOOKBEFORE_DRAM_INIT, agesa_NoopSuccess }, |
| {AGESA_HOOKBEFORE_EXIT_SELF_REF, agesa_NoopSuccess }, |
| }; |
| |
| AGESA_STATUS GetBiosCallout (UINT32 Func, UINT32 Data, VOID *ConfigPtr) |
| { |
| UINTN i; |
| AGESA_STATUS CalloutStatus; |
| UINTN CallOutCount = sizeof (BiosCallouts) / sizeof (BiosCallouts [0]); |
| |
| for (i = 0; i < CallOutCount; i++) { |
| if (BiosCallouts[i].CalloutName == Func) { |
| break; |
| } |
| } |
| |
| if(i >= CallOutCount) { |
| return AGESA_UNSUPPORTED; |
| } |
| |
| CalloutStatus = BiosCallouts[i].CalloutPtr (Func, Data, ConfigPtr); |
| |
| return CalloutStatus; |
| } |
| |
| AGESA_STATUS BiosReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr) |
| { |
| AGESA_STATUS Status; |
| #ifdef __PRE_RAM__ |
| UINT8 original_value = 0; |
| |
| if (ConfigPtr == NULL) |
| return AGESA_ERROR; |
| |
| original_value = select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId); |
| |
| Status = agesa_ReadSPD (Func, Data, ConfigPtr); |
| |
| restore_socket(original_value); |
| #else |
| Status = AGESA_UNSUPPORTED; |
| #endif |
| |
| return Status; |
| } |