Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2010 Advanced Micro Devices, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include <console/console.h> |
| 17 | #include <device/device.h> |
| 18 | #include <device/pci.h> |
| 19 | #include <arch/io.h> |
| 20 | #include <cpu/x86/msr.h> |
| 21 | #include <cpu/amd/mtrr.h> |
| 22 | #include <device/pci_def.h> |
efdesign98 | 00c8c4a | 2011-07-20 12:37:58 -0600 | [diff] [blame] | 23 | #include "southbridge/amd/sb700/sb700.h" |
| 24 | #include "southbridge/amd/sb700/smbus.h" |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 25 | |
| 26 | |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 27 | void set_pcie_dereset(void); |
| 28 | void set_pcie_reset(void); |
| 29 | u8 is_dev3_present(void); |
| 30 | |
| 31 | void set_pcie_dereset() |
| 32 | { |
| 33 | u8 byte; |
| 34 | u16 word; |
| 35 | device_t sm_dev; |
| 36 | /* set 0 to bit1 :disable GPM9 as SLP_S2 output */ |
| 37 | /* set 0 to bit2 :disable GPM8 as AZ_RST output */ |
| 38 | byte = pm_ioread(0x8d); |
| 39 | byte &= ~((1 << 1) | (1 << 2)); |
| 40 | pm_iowrite(0x8d, byte); |
| 41 | |
| 42 | /* set the GPM8 and GPM9 output enable and the value to 1 */ |
| 43 | byte = pm_ioread(0x94); |
| 44 | byte &= ~((1 << 2) | (1 << 3)); |
| 45 | byte |= ((1 << 0) | (1 << 1)); |
| 46 | pm_iowrite(0x94, byte); |
| 47 | |
| 48 | /* set the GPIO65 output enable and the value is 1 */ |
| 49 | sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); |
| 50 | word = pci_read_config16(sm_dev, 0x7e); |
| 51 | word |= (1 << 0); |
| 52 | word &= ~(1 << 4); |
| 53 | pci_write_config16(sm_dev, 0x7e, word); |
| 54 | } |
| 55 | |
| 56 | void set_pcie_reset() |
| 57 | { |
| 58 | u8 byte; |
| 59 | u16 word; |
| 60 | device_t sm_dev; |
| 61 | |
| 62 | /* set 0 to bit1 :disable GPM9 as SLP_S2 output */ |
| 63 | /* set 0 to bit2 :disable GPM8 as AZ_RST output */ |
| 64 | byte = pm_ioread(0x8d); |
| 65 | byte &= ~((1 << 1) | (1 << 2)); |
| 66 | pm_iowrite(0x8d, byte); |
| 67 | |
| 68 | /* set the GPM8 and GPM9 output enable and the value to 0 */ |
| 69 | byte = pm_ioread(0x94); |
| 70 | byte &= ~((1 << 2) | (1 << 3)); |
| 71 | byte &= ~((1 << 0) | (1 << 1)); |
| 72 | pm_iowrite(0x94, byte); |
| 73 | |
| 74 | /* set the GPIO65 output enable and the value is 0 */ |
| 75 | sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); |
| 76 | word = pci_read_config16(sm_dev, 0x7e); |
| 77 | word &= ~(1 << 0); |
| 78 | word &= ~(1 << 4); |
| 79 | pci_write_config16(sm_dev, 0x7e, word); |
| 80 | } |
| 81 | |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 82 | /* |
| 83 | * justify the dev3 is exist or not |
| 84 | * NOTE: This just copied from AMD Tilapia code. |
| 85 | * It is completly unknown if it will work at all for this board. |
| 86 | */ |
| 87 | u8 is_dev3_present(void) |
| 88 | { |
| 89 | u16 word; |
| 90 | device_t sm_dev; |
| 91 | |
| 92 | /* access the smbus extended register */ |
| 93 | sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); |
| 94 | |
| 95 | /* put the GPIO68 output to tristate */ |
| 96 | word = pci_read_config16(sm_dev, 0x7e); |
| 97 | word |= 1 << 6; |
| 98 | pci_write_config16(sm_dev, 0x7e,word); |
| 99 | |
| 100 | /* read the GPIO68 input status */ |
| 101 | word = pci_read_config16(sm_dev, 0x7e); |
| 102 | |
| 103 | if(word & (1 << 10)){ |
| 104 | /*not exist*/ |
| 105 | return 0; |
| 106 | }else{ |
| 107 | /*exist*/ |
| 108 | return 1; |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | |
| 113 | /************************************************* |
| 114 | * enable the dedicated function in this board. |
| 115 | * This function called early than rs780_enable. |
| 116 | *************************************************/ |
Paul Menzel | 528640d | 2013-02-23 21:31:23 +0100 | [diff] [blame] | 117 | static void mainboard_enable(device_t dev) |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 118 | { |
| 119 | printk(BIOS_INFO, "Mainboard enable. dev=0x%p\n", dev); |
| 120 | |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 121 | set_pcie_dereset(); |
| 122 | /* get_ide_dma66(); */ |
| 123 | /* set_thermal_config(); */ |
| 124 | } |
| 125 | |
| 126 | struct chip_operations mainboard_ops = { |
Paul Menzel | 528640d | 2013-02-23 21:31:23 +0100 | [diff] [blame] | 127 | .enable_dev = mainboard_enable, |
Juhana Helovuo | a8c8490 | 2010-12-06 01:11:12 +0000 | [diff] [blame] | 128 | }; |