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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 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 <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <arch/io.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/mtrr.h>
#include <device/pci_def.h>
#include "southbridge/amd/sb700/sb700.h"
#include "southbridge/amd/sb700/smbus.h"
#include "chip.h"
#define ADT7461_ADDRESS 0x4C
#define ARA_ADDRESS 0x0C /* Alert Response Address */
#define ADT7461_read_byte(address) \
do_smbus_read_byte(SMBUS_IO_BASE, ADT7461_ADDRESS, address)
#define ARA_read_byte(address) \
do_smbus_read_byte(SMBUS_IO_BASE, ARA_ADDRESS, address)
#define ADT7461_write_byte(address, val) \
do_smbus_write_byte(SMBUS_IO_BASE, ADT7461_ADDRESS, address, val)
void set_pcie_dereset(void);
void set_pcie_reset(void);
u8 is_dev3_present(void);
void set_pcie_dereset()
{
u8 byte;
u16 word;
device_t sm_dev;
/* set 0 to bit1 :disable GPM9 as SLP_S2 output */
/* set 0 to bit2 :disable GPM8 as AZ_RST output */
byte = pm_ioread(0x8d);
byte &= ~((1 << 1) | (1 << 2));
pm_iowrite(0x8d, byte);
/* set the GPM8 and GPM9 output enable and the value to 1 */
byte = pm_ioread(0x94);
byte &= ~((1 << 2) | (1 << 3));
byte |= ((1 << 0) | (1 << 1));
pm_iowrite(0x94, byte);
/* set the GPIO65 output enable and the value is 1 */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
word = pci_read_config16(sm_dev, 0x7e);
word |= (1 << 0);
word &= ~(1 << 4);
pci_write_config16(sm_dev, 0x7e, word);
}
void set_pcie_reset()
{
u8 byte;
u16 word;
device_t sm_dev;
/* set 0 to bit1 :disable GPM9 as SLP_S2 output */
/* set 0 to bit2 :disable GPM8 as AZ_RST output */
byte = pm_ioread(0x8d);
byte &= ~((1 << 1) | (1 << 2));
pm_iowrite(0x8d, byte);
/* set the GPM8 and GPM9 output enable and the value to 0 */
byte = pm_ioread(0x94);
byte &= ~((1 << 2) | (1 << 3));
byte &= ~((1 << 0) | (1 << 1));
pm_iowrite(0x94, byte);
/* set the GPIO65 output enable and the value is 0 */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
word = pci_read_config16(sm_dev, 0x7e);
word &= ~(1 << 0);
word &= ~(1 << 4);
pci_write_config16(sm_dev, 0x7e, word);
}
/*
* justify the dev3 is exist or not
* NOTE: This just copied from AMD Tilapia code.
* It is completly unknown it it will work at all for ASUS M4A785-M.
*/
u8 is_dev3_present(void)
{
u16 word;
device_t sm_dev;
/* access the smbus extended register */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
/* put the GPIO68 output to tristate */
word = pci_read_config16(sm_dev, 0x7e);
word |= 1 << 6;
pci_write_config16(sm_dev, 0x7e,word);
/* read the GPIO68 input status */
word = pci_read_config16(sm_dev, 0x7e);
if(word & (1 << 10)){
/*not exist*/
return 0;
}else{
/*exist*/
return 1;
}
}
/*
* set thermal config
*/
static void set_thermal_config(void)
{
u8 byte;
u16 word;
device_t sm_dev;
/* set ADT 7461 */
ADT7461_write_byte(0x0B, 0x50); /* Local Temperature Hight limit */
ADT7461_write_byte(0x0C, 0x00); /* Local Temperature Low limit */
ADT7461_write_byte(0x0D, 0x50); /* External Temperature Hight limit High Byte */
ADT7461_write_byte(0x0E, 0x00); /* External Temperature Low limit High Byte */
ADT7461_write_byte(0x19, 0x55); /* External THERM limit */
ADT7461_write_byte(0x20, 0x55); /* Local THERM limit */
byte = ADT7461_read_byte(0x02); /* read status register to clear it */
ARA_read_byte(0x05); /* A hardware alert can only be cleared by the master sending an ARA as a read command */
printk(BIOS_INFO, "Init adt7461 end , status 0x02 %02x\n", byte);
/* sb700 settings for thermal config */
/* set SB700 GPIO 64 to GPIO with pull-up */
byte = pm2_ioread(0x42);
byte &= 0x3f;
pm2_iowrite(0x42, byte);
/* set GPIO 64 to input */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
word = pci_read_config16(sm_dev, 0x56);
word |= 1 << 7;
pci_write_config16(sm_dev, 0x56, word);
/* set GPIO 64 internal pull-up */
byte = pm2_ioread(0xf0);
byte &= 0xee;
pm2_iowrite(0xf0, byte);
/* set Talert to be active low */
byte = pm_ioread(0x67);
byte &= ~(1 << 5);
pm_iowrite(0x67, byte);
/* set Talert to generate ACPI event */
byte = pm_ioread(0x3c);
byte &= 0xf3;
pm_iowrite(0x3c, byte);
/* THERMTRIP pin */
/* byte = pm_ioread(0x68);
* byte |= 1 << 3;
* pm_iowrite(0x68, byte);
*
* byte = pm_ioread(0x55);
* byte |= 1 << 0;
* pm_iowrite(0x55, byte);
*
* byte = pm_ioread(0x67);
* byte &= ~( 1 << 6);
* pm_iowrite(0x67, byte);
*/
}
/*************************************************
* enable the dedicated function in this board.
* This function called early than rs780_enable.
*************************************************/
static void m4a785m_enable(device_t dev)
{
printk(BIOS_INFO, "Mainboard enable. dev=0x%p\n", dev);
#if CONFIG_GFXUMA
msr_t msr, msr2;
/* TOP_MEM: the top of DRAM below 4G */
msr = rdmsr(TOP_MEM);
printk(BIOS_INFO,
"%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
__func__, msr.lo, msr.hi);
/* TOP_MEM2: the top of DRAM above 4G */
msr2 = rdmsr(TOP_MEM2);
printk(BIOS_INFO,
"%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
__func__, msr2.lo, msr2.hi);
switch (msr.lo) {
case 0x10000000: /* 256M system memory */
uma_memory_size = 0x4000000; /* 64M recommended UMA */
break;
case 0x20000000: /* 512M system memory */
uma_memory_size = 0x8000000; /* 128M recommended UMA */
break;
default: /* 1GB and above system memory */
uma_memory_size = 0x10000000; /* 256M recommended UMA */
break;
}
uma_memory_base = msr.lo - uma_memory_size; /* TOP_MEM1 */
printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
__func__, uma_memory_size, uma_memory_base);
/* TODO: TOP_MEM2 */
#else
uma_memory_size = 0x8000000; /* 128M recommended UMA */
uma_memory_base = 0x38000000; /* 1GB system memory supposed */
#endif
set_pcie_dereset();
/* get_ide_dma66(); */
set_thermal_config();
}
struct chip_operations mainboard_ops = {
#ifdef CONFIG_BOARD_ASUS_M4A785TM
CHIP_NAME("ASUS M4A785T-M Mainboard")
#else
CHIP_NAME("ASUS M4A785-M Mainboard")
#endif
.enable_dev = m4a785m_enable,
};
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