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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.
*/
#include <console/console.h>
#include <device/mmio.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "hudson.h"
#include "imc.h"
#include "smbus.h"
#include "smi.h"
/* Offsets from ACPI_MMIO_BASE
* This is defined by AGESA, but we don't include AGESA headers to avoid
* polluting the namespace.
*/
#define PM_MMIO_BASE 0xfed80300
void pm_write8(u8 reg, u8 value)
{
write8((void *)((uintptr_t)PM_MMIO_BASE + reg), value);
}
u8 pm_read8(u8 reg)
{
return read8((void *)((uintptr_t)PM_MMIO_BASE + reg));
}
void pm_write16(u8 reg, u16 value)
{
write16((void *)((uintptr_t)PM_MMIO_BASE + reg), value);
}
u16 pm_read16(u16 reg)
{
return read16((void *)((uintptr_t)PM_MMIO_BASE + reg));
}
#define PM_REG_USB_ENABLE 0xef
enum usb_enable {
USB_EN_DEVFN_12_0 = (1 << 0),
USB_EN_DEVFN_12_2 = (1 << 1),
USB_EN_DEVFN_13_0 = (1 << 2),
USB_EN_DEVFN_13_2 = (1 << 3),
USB_EN_DEVFN_16_0 = (1 << 4),
USB_EN_DEVFN_16_2 = (1 << 5),
};
static void hudson_disable_usb(u8 disable)
{
u8 reg8;
/* Bit 7 handles routing, 6 is reserved. we don't mess with those */
disable &= 0x3f;
reg8 = pm_read8(PM_REG_USB_ENABLE);
reg8 &= ~disable;
pm_write8(PM_REG_USB_ENABLE, reg8);
}
void hudson_enable(struct device *dev)
{
printk(BIOS_DEBUG, "hudson_enable()\n");
switch (dev->path.pci.devfn) {
case PCI_DEVFN(0x14, 5):
if (dev->enabled == 0) {
u32 usb_device_id = pci_read_config16(dev, PCI_DEVICE_ID);
u8 reg8;
if (usb_device_id == PCI_DEVICE_ID_AMD_SB900_USB_20_5) {
/* turn off and remove device 0:14.5 from PCI space */
reg8 = pm_read8(0xef);
reg8 &= ~(1 << 6);
pm_write8(0xef, reg8);
}
}
break;
case PCI_DEVFN(0x14, 7):
if (dev->enabled == 0) {
u32 sd_device_id = pci_read_config16(dev, PCI_DEVICE_ID);
/* turn off the SDHC controller in the PM reg */
u8 reg8;
if (sd_device_id == PCI_DEVICE_ID_AMD_HUDSON_SD) {
reg8 = pm_read8(0xe7);
reg8 &= ~(1 << 0);
pm_write8(0xe7, reg8);
}
else if (sd_device_id == PCI_DEVICE_ID_AMD_YANGTZE_SD) {
reg8 = pm_read8(0xe8);
reg8 &= ~(1 << 0);
pm_write8(0xe8, reg8);
}
/* remove device 0:14.7 from PCI space */
reg8 = pm_read8(0xd3);
reg8 &= ~(1 << 6);
pm_write8(0xd3, reg8);
}
break;
/* Make sure to disable other functions if function 0 is disabled */
case PCI_DEVFN(0x12, 0):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_12_0);
/* fall through */
case PCI_DEVFN(0x12, 2):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_12_2);
break;
case PCI_DEVFN(0x13, 0):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_13_0);
/* fall through */
case PCI_DEVFN(0x13, 2):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_13_2);
break;
case PCI_DEVFN(0x16, 0):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_16_0);
/* fall through */
case PCI_DEVFN(0x16, 2):
if (dev->enabled == 0)
hudson_disable_usb(USB_EN_DEVFN_16_2);
break;
default:
break;
}
}
static void hudson_init_acpi_ports(void)
{
/* We use some of these ports in SMM regardless of whether or not
* ACPI tables are generated. Enable these ports indiscriminately.
*/
pm_write16(0x60, ACPI_PM_EVT_BLK);
pm_write16(0x62, ACPI_PM1_CNT_BLK);
pm_write16(0x64, ACPI_PM_TMR_BLK);
pm_write16(0x68, ACPI_GPE0_BLK);
/* CpuControl is in \_PR.CP00, 6 bytes */
pm_write16(0x66, ACPI_CPU_CONTROL);
if (CONFIG(HAVE_SMI_HANDLER)) {
pm_write16(0x6a, ACPI_SMI_CTL_PORT);
hudson_enable_acpi_cmd_smi();
} else {
pm_write16(0x6a, 0);
}
/* AcpiDecodeEnable, When set, SB uses the contents of the PM registers
* at index 60-6B to decode ACPI I/O address. AcpiSmiEn & SmiCmdEn
*/
pm_write8(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2);
}
static void hudson_init(void *chip_info)
{
hudson_init_acpi_ports();
}
static void hudson_final(void *chip_info)
{
/* AMD AGESA does not enable thermal zone, so we enable it here. */
if (CONFIG(HUDSON_IMC_FWM) &&
!CONFIG(ACPI_ENABLE_THERMAL_ZONE))
enable_imc_thermal_zone();
}
struct chip_operations southbridge_amd_agesa_hudson_ops = {
CHIP_NAME("ATI HUDSON")
.enable_dev = hudson_enable,
.init = hudson_init,
.final = hudson_final
};
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