From c7667f09adac55950a007b0a2162417ff3e05780 Mon Sep 17 00:00:00 2001 From: WANG Siyuan Date: Tue, 23 Jun 2015 22:28:17 +0800 Subject: AMD binary PI: add southbridge support for fan control 1. Add functions to support fan control. 2. When IMC firmware is added, the current firmwares' layout cause build error. There is not enough space to add some firmwares, so HUDSON_PSP_OFFSET is added to fix this problem. Change-Id: Ie470a88cb9da256d9f72ea56bf268c15df195784 Signed-off-by: WANG Siyuan Signed-off-by: WANG Siyuan Reviewed-on: http://review.coreboot.org/10720 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones --- src/southbridge/amd/pi/hudson/imc.c | 105 ++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 src/southbridge/amd/pi/hudson/imc.c (limited to 'src/southbridge/amd/pi/hudson/imc.c') diff --git a/src/southbridge/amd/pi/hudson/imc.c b/src/southbridge/amd/pi/hudson/imc.c new file mode 100644 index 0000000000..9282c94e0c --- /dev/null +++ b/src/southbridge/amd/pi/hudson/imc.c @@ -0,0 +1,105 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 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 + */ + +#define __SIMPLE_DEVICE__ + +#include "imc.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define VACPI_MMIO_VBASE ((u8 *)ACPI_MMIO_BASE) + +void imc_reg_init(void) +{ + u8 reg8; + /* Init Power Management Block 2 (PM2) Registers. + * Check BKDG for AMD Family 16h for details. */ + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x00), 0x06); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x01), 0x06); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x02), 0xf7); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x03), 0xff); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x04), 0xff); + + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x10), 0x06); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x11), 0x06); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x12), 0xf7); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x13), 0xff); + write8((VACPI_MMIO_VBASE + PMIO2_BASE + 0x14), 0xff); + + reg8 = pci_read_config8(PCI_DEV(0, 0x18, 0x3), 0x1E4); + reg8 &= 0x8F; + reg8 |= 0x10; + pci_write_config8(PCI_DEV(0, 0x18, 0x3), 0x1E4, reg8); +} + +#ifndef __PRE_RAM__ +void enable_imc_thermal_zone(void) +{ + AMD_CONFIG_PARAMS StdHeader; + UINT8 FunNum; + UINT8 regs[9]; + int i; + + regs[0] = 0; + regs[1] = 0; + FunNum = Fun_80; + for (i = 0; i <= 1; i++) + WriteECmsg(MSG_REG0 + i, AccessWidth8, ®s[i], &StdHeader); + WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader); + WaitForEcLDN9MailboxCmdAck(&StdHeader); + + for (i = 2; i <= 9; i++) + ReadECmsg(MSG_REG0 + i, AccessWidth8, ®s[i], &StdHeader); + + /* enable thermal zone 0 */ + regs[2] |= 1; + regs[0] = 0; + regs[1] = 0; + FunNum = Fun_81; + for (i = 0; i <= 9; i++) + WriteECmsg(MSG_REG0 + i, AccessWidth8, ®s[i], &StdHeader); + WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader); + WaitForEcLDN9MailboxCmdAck(&StdHeader); +} +#endif + +/* Bettong Hardware Monitor Fan Control + * Hardware limitation: + * HWM will fail to read the input temperature via I2C if other + * software switches the I2C address. AMD recommends using IMC + * to control fans, instead of HWM. + */ +void oem_fan_control(FCH_DATA_BLOCK *FchParams) +{ + /* Enable IMC fan control. the recommand way */ + imc_reg_init(); + + FchParams->Imc.ImcEnable = TRUE; + FchParams->Hwm.HwmControl = 1; /* 1 IMC, 0 HWM */ + FchParams->Imc.ImcEnableOverWrite = 1; /* 2 disable IMC, 1 enable IMC, 0 following hw strap setting */ + + LibAmdMemFill(&(FchParams->Imc.EcStruct), 0, sizeof(FCH_EC), FchParams->StdHeader); +} -- cgit v1.2.3