| /* |
| * 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/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); |
| /* |
| * Mahogany 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); |
| } |
| |
| #if 0 /* not tested yet */ |
| /******************************************************** |
| * mahogany uses SB700 GPIO9 to detect IDE_DMA66. |
| * IDE_DMA66 is routed to GPIO 9. So we read Gpio 9 to |
| * get the cable type, 40 pin or 80 pin? |
| ********************************************************/ |
| static void get_ide_dma66(void) |
| { |
| u8 byte; |
| /*u32 sm_dev, ide_dev; */ |
| device_t sm_dev, ide_dev; |
| |
| sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); |
| |
| byte = pci_read_config8(sm_dev, 0xA9); |
| byte |= (1 << 5); /* Set Gpio9 as input */ |
| pci_write_config8(sm_dev, 0xA9, byte); |
| |
| ide_dev = dev_find_slot(0, PCI_DEVFN(0x14, 1)); |
| byte = pci_read_config8(ide_dev, 0x56); |
| byte &= ~(7 << 0); |
| if ((1 << 5) & pci_read_config8(sm_dev, 0xAA)) |
| byte |= 2 << 0; /* mode 2 */ |
| else |
| byte |= 5 << 0; /* mode 5 */ |
| pci_write_config8(ide_dev, 0x56, byte); |
| } |
| #endif /* get_ide_dma66 */ |
| |
| u8 is_dev3_present(void) |
| { |
| return 0; |
| } |
| /************************************************* |
| * enable the dedicated function in mahogany board. |
| * This function called early than rs780_enable. |
| *************************************************/ |
| static void mainboard_enable(device_t dev) |
| { |
| printk(BIOS_INFO, "Mainboard MAHOGANY Enable. dev=0x%p\n", dev); |
| |
| set_pcie_dereset(); |
| /* get_ide_dma66(); */ |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .enable_dev = mainboard_enable, |
| }; |