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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 One Laptop per Child, Association, 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
*/
void DutyCycleCtrl(DRAM_SYS_ATTR *DramAttr)
{
u8 Data, FreqId, i;
if (DIMMFREQ_800 == DramAttr->DramFreq)
FreqId = 2;
else if (DIMMFREQ_667 == DramAttr->DramFreq)
FreqId = 3;
else if (DIMMFREQ_533 == DramAttr->DramFreq)
FreqId = 4;
else if (DIMMFREQ_400 == DramAttr->DramFreq)
FreqId = 5;
else
FreqId = 5;
if (DramAttr->RankNumChA > 0) { /* 1 rank */
for (i = 0; i < DUTY_CYCLE_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
ChA_Duty_Control_DDR2[i][0]);
Data &= ChA_Duty_Control_DDR2[i][1]; /* mask */
Data |= ChA_Duty_Control_DDR2[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
ChA_Duty_Control_DDR2[i][0], Data);
}
}
if (1 == ENABLE_CHC) { /* 1 rank */
for (i = 0; i < DUTY_CYCLE_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
ChB_Duty_Control_DDR2[i][0]);
Data &= ChB_Duty_Control_DDR2[i][1]; /* mask */
Data |= ChB_Duty_Control_DDR2[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
ChB_Duty_Control_DDR2[i][0], Data);
}
}
}
/*
* DRAM clock phase and delay control
*/
/* Subroutine list */
void ClkPhsCtrlFBMDDR2(DRAM_SYS_ATTR *DramAttr);
void WrtDataPhsCtrl(DRAM_SYS_ATTR *DramAttr);
void DQDQSOutputDlyCtrl(DRAM_SYS_ATTR *DramAttr);
void DQSInputCaptureCtrl(DRAM_SYS_ATTR *DramAttr);
void DCLKPhsCtrl(DRAM_SYS_ATTR *DramAttr);
void DRAMClkCtrl(DRAM_SYS_ATTR *DramAttr)
{
/* Write data clock phase control. */
WrtDataPhsCtrl(DramAttr);
/* Clock phase control */
ClkPhsCtrlFBMDDR2(DramAttr);
/**/ DQDQSOutputDlyCtrl(DramAttr);
/**/ DQSInputCaptureCtrl(DramAttr);
DCLKPhsCtrl(DramAttr);
}
void ClkPhsCtrlFBMDDR2(DRAM_SYS_ATTR *DramAttr)
{
u8 Data, FreqId, i;
if (DramAttr->DramFreq == DIMMFREQ_800)
FreqId = 2;
else if (DramAttr->DramFreq == DIMMFREQ_667)
FreqId = 3;
else if (DramAttr->DramFreq == DIMMFREQ_533)
FreqId = 4;
else if (DramAttr->DramFreq == DIMMFREQ_400)
FreqId = 5;
else
FreqId = 5;
/* Channel A */
// 2~4 Rank
if (DramAttr->RankNumChA == 1) { /* 1 rank */
for (i = 0; i < 3; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChA_Clk_Phase_Table_1R[i][0]);
Data &= DDR2_ChA_Clk_Phase_Table_1R[i][1]; /* mask */
Data |= DDR2_ChA_Clk_Phase_Table_1R[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChA_Clk_Phase_Table_1R[i][0], Data);
}
} else if (DramAttr->RankNumChA > 1) { /* 2~4 Rank */
for (i = 0; i < 3; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChA_Clk_Phase_Table_2R[i][0]);
Data &= DDR2_ChA_Clk_Phase_Table_2R[i][1]; /* mask */
Data |= DDR2_ChA_Clk_Phase_Table_2R[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChA_Clk_Phase_Table_2R[i][0], Data);
}
}
#if ENABLE_CHB
if (DramAttr->RankNumChB > 0) { /* 1 rank */
for (i = 0; i < 3; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChB_Clk_Phase_Table_1R[i][0]);
Data &= DDR2_ChB_Clk_Phase_Table_1R[i][1]; /* mask */
Data |= DDR2_ChB_Clk_Phase_Table_1R[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChB_Clk_Phase_Table_1R[i][0], Data);
}
}
#endif
}
void WrtDataPhsCtrl(DRAM_SYS_ATTR *DramAttr)
{
u8 Data, FreqId, i;
if (DIMMFREQ_800 == DramAttr->DramFreq)
FreqId = 2;
else if (DIMMFREQ_667 == DramAttr->DramFreq)
FreqId = 3;
else if (DIMMFREQ_533 == DramAttr->DramFreq)
FreqId = 4;
else if (DIMMFREQ_400 == DramAttr->DramFreq)
FreqId = 5;
else
FreqId = 5;
if (DramAttr->RankNumChA > 0) { /* 1 rank */
for (i = 0; i < WrtData_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChA_WrtData_Phase_Table[i][0]);
Data &= DDR2_ChA_WrtData_Phase_Table[i][1]; /* mask */
Data |= DDR2_ChA_WrtData_Phase_Table[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChA_WrtData_Phase_Table[i][0], Data);
}
}
#if ENABLE_CHB
if (DramAttr->RankNumChB > 0) { /* 1 rank */
for (i = 0; i < WrtData_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChB_WrtData_Phase_Table[i][0]);
Data &= DDR2_ChB_WrtData_Phase_Table[i][1]; /* mask */
Data |= DDR2_ChB_WrtData_Phase_Table[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChB_WrtData_Phase_Table[i][0], Data);
}
}
#endif
Data = pci_read_config8(MEMCTRL, 0x8C);
Data &= 0xFC;
Data |= 0x03;
pci_write_config8(MEMCTRL, 0x8C, Data);
}
void DQDQSOutputDlyCtrl(DRAM_SYS_ATTR *DramAttr)
{
u8 Data, FreqId;
if (DIMMFREQ_400 == DramAttr->DramFreq)
FreqId = 0;
else if (DIMMFREQ_533 == DramAttr->DramFreq)
FreqId = 1;
else if (DIMMFREQ_667 == DramAttr->DramFreq)
FreqId = 2;
else if (DIMMFREQ_800 == DramAttr->DramFreq)
FreqId = 2;
else
FreqId = 0;
if (DramAttr->RankNumChA > 0) {
Data = DDR2_CHA_DQ_DQS_Delay_Table[FreqId][0];
pci_write_config8(MEMCTRL, 0xf0, Data);
Data = DDR2_CHA_DQ_DQS_Delay_Table[FreqId][1];
pci_write_config8(MEMCTRL, 0xf1, Data);
Data = DDR2_CHA_DQ_DQS_Delay_Table[FreqId][2];
pci_write_config8(MEMCTRL, 0xf2, Data);
Data = DDR2_CHA_DQ_DQS_Delay_Table[FreqId][3];
pci_write_config8(MEMCTRL, 0xf3, Data);
}
#if ENABLE_CHB
if (DramAttr->RankNumChB > 0) {
Data = DDR2_CHB_DQ_DQS_Delay_Table[FreqId][0];
pci_write_config8(MEMCTRL, 0xf4, Data);
Data = DDR2_CHB_DQ_DQS_Delay_Table[FreqId][1];
pci_write_config8(MEMCTRL, 0xf5, Data);
Data = DDR2_CHB_DQ_DQS_Delay_Table[FreqId][2];
pci_write_config8(MEMCTRL, 0xf6, Data);
Data = DDR2_CHB_DQ_DQS_Delay_Table[FreqId][3];
pci_write_config8(MEMCTRL, 0xf7, Data);
}
#endif
}
void DQSInputCaptureCtrl(DRAM_SYS_ATTR *DramAttr)
{
u8 Data, FreqId, i;
if (DIMMFREQ_800 == DramAttr->DramFreq)
FreqId = 2;
else if (DIMMFREQ_667 == DramAttr->DramFreq)
FreqId = 3;
else if (DIMMFREQ_533 == DramAttr->DramFreq)
FreqId = 4;
else if (DIMMFREQ_400 == DramAttr->DramFreq)
FreqId = 5;
else
FreqId = 2;
Data = 0x8A;
pci_write_config8(MEMCTRL, 0x77, Data);
if (DramAttr->RankNumChA > 0) { /* 1 rank */
for (i = 0; i < DQS_INPUT_CAPTURE_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChA_DQS_Input_Capture_Tbl[i][0]);
Data &= DDR2_ChA_DQS_Input_Capture_Tbl[i][1]; /* mask */
Data |= DDR2_ChA_DQS_Input_Capture_Tbl[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChA_DQS_Input_Capture_Tbl[i][0], Data);
}
}
#if ENABLE_CHB
if (DramAttr->RankNumChB > 0) { /* 1 rank */
for (i = 0; i < DQS_INPUT_CAPTURE_REG_NUM; i++) {
Data = pci_read_config8(MEMCTRL,
DDR2_ChB_DQS_Input_Capture_Tbl[i][0]);
Data &= DDR2_ChB_DQS_Input_Capture_Tbl[i][1]; /* mask */
Data |= DDR2_ChB_DQS_Input_Capture_Tbl[i][FreqId]; /* set val */
pci_write_config8(MEMCTRL,
DDR2_ChB_DQS_Input_Capture_Tbl[i][0], Data);
}
}
#endif
}
/*
* This is very important, if you don't set it correctly, DRAM will be
* unreliable,
*
* Set DCLK Phase control(Reg99H[6:1]) according the DDRII in the DIMM.
*/
void DCLKPhsCtrl(DRAM_SYS_ATTR *DramAttr)
{
u8 Data;
Data = 0; /* TODO: Can be dropped? */
Data = pci_read_config8(MEMCTRL, 0x99);
Data &= 0xE1;
/* DDR in Dimm1, MCLKOA[4,3,0] will output MCLK */
if (DramAttr->RankPresentMap & 0x03)
Data |= 0x09 << 1;
/* DDR in Dimm2, MCLKOA[5,2,1] will output MCLK */
if (DramAttr->RankPresentMap & 0x0C)
Data |= 0x06 << 1;
pci_write_config8(MEMCTRL, 0x99, Data);
}
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