| /* |
| * 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. |
| * |
| * 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" |
| |
| void set_pcie_dereset(void); |
| void set_pcie_reset(void); |
| u8 is_dev3_present(void); |
| /* |
| * 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() |
| { |
| u16 word; |
| device_t 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() |
| { |
| u16 word; |
| device_t 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); |
| } |
| |
| |
| u8 is_dev3_present(void) |
| { |
| return 0; |
| } |
| |
| /************************************************* |
| * enable the dedicated function in board. |
| * This function called early than rs780_enable. |
| *************************************************/ |
| static void mainboard_enable(device_t 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, |
| }; |