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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 <arch/io.h>
#include <arch/acpi.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <cbmem.h>
#include "hudson.h"
#include "smbus.h"
/* Offsets from ACPI_MMIO_BASE
* This is defined by AGESA, but we don't include AGESA headers to avoid
* polluting the namesace.
*/
#define PM_MMIO_BASE 0xfed80300
#if CONFIG_HAVE_ACPI_RESUME
int acpi_get_sleep_type(void)
{
u16 tmp = inw(ACPI_PM1_CNT_BLK);
tmp = ((tmp & (7 << 10)) >> 10);
/* printk(BIOS_DEBUG, "SLP_TYP type was %x\n", tmp); */
return (int)tmp;
}
#endif
void backup_top_of_ram(uint64_t ramtop)
{
u32 dword = (u32) ramtop;
int nvram_pos = 0xf8, i; /* temp */
/* printk(BIOS_DEBUG, "dword=%x\n", dword); */
for (i = 0; i<4; i++) {
/* printk(BIOS_DEBUG, "nvram_pos=%x, dword>>(8*i)=%x\n", nvram_pos, (dword >>(8 * i)) & 0xff); */
outb(nvram_pos, BIOSRAM_INDEX);
outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
nvram_pos++;
}
}
void pm_write8(u8 reg, u8 value)
{
write8(PM_MMIO_BASE + reg, value);
}
u8 pm_read8(u8 reg)
{
return read8(PM_MMIO_BASE + reg);
}
void pm_write16(u8 reg, u16 value)
{
write16(PM_MMIO_BASE + reg, value);
}
u16 pm_read16(u16 reg)
{
return read16(PM_MMIO_BASE + reg);
}
void hudson_enable(device_t dev)
{
printk(BIOS_DEBUG, "hudson_enable()\n");
switch (dev->path.pci.devfn) {
case (0x14 << 3) | 7: /* 0:14.7 SD */
if (dev->enabled == 0) {
// read the VENDEV ID
device_t sd_dev = dev_find_slot( 0, PCI_DEVFN( 0x14, 7));
u32 sd_device_id = pci_read_config32( sd_dev, 0) >> 16;
/* 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;
default:
break;
}
}
#if CONFIG_HAVE_ACPI_RESUME
unsigned long get_top_of_ram(void)
{
uint32_t xdata = 0;
int xnvram_pos = 0xf8, xi;
if (acpi_get_sleep_type() != 3)
return 0;
for (xi = 0; xi<4; xi++) {
outb(xnvram_pos, BIOSRAM_INDEX);
xdata &= ~(0xff << (xi * 8));
xdata |= inb(BIOSRAM_DATA) << (xi *8);
xnvram_pos++;
}
return (unsigned long) xdata;
}
#endif
struct chip_operations southbridge_amd_agesa_hudson_ops = {
CHIP_NAME("ATI HUDSON")
.enable_dev = hudson_enable,
};
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