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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Wang Qing Pei <wangqingpei@gmail.com>
* 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/device.h>
#include <device/pci.h>
#include <arch/io.h>
#include <device/pci_def.h>
#include <southbridge/amd/sb700/sb700.h>
#include <southbridge/amd/sb700/smbus.h>
#include <southbridge/amd/rs780/rs780.h>
/*
* ma78gm-us2h uses GPIO 6 as PCIe slot reset, GPIO4 as GFX slot reset. We need to
* pull it up before training the slot.
***/
void set_pcie_dereset(void)
{
u16 word;
struct device *sm_dev;
/* GPIO 6 reset PCIe slot, GPIO 4 reset GFX PCIe */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
word = pci_read_config16(sm_dev, 0xA8);
word |= (1 << 0) | (1 << 2); /* Set Gpio6,4 as output */
word &= ~((1 << 8) | (1 << 10));
pci_write_config16(sm_dev, 0xA8, word);
}
void set_pcie_reset(void)
{
u16 word;
struct device *sm_dev;
/* GPIO 6 reset PCIe slot, GPIO 4 reset GFX PCIe */
sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
word = pci_read_config16(sm_dev, 0xA8);
word &= ~((1 << 0) | (1 << 2)); /* Set Gpio6,4 as output */
word &= ~((1 << 8) | (1 << 10));
pci_write_config16(sm_dev, 0xA8, word);
}
int is_dev3_present(void)
{
return 0;
}
/*************************************************
* enable the dedicated function in board.
* This function called early than rs780_enable.
*************************************************/
static void mainboard_enable(struct device *dev)
{
printk(BIOS_INFO, "Mainboard MA78GM-US2H Enable. dev=0x%p\n", dev);
set_pcie_dereset();
/* get_ide_dma66(); */
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
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