Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
Stefan Reinauer | 43b29cf | 2009-03-06 19:11:52 +0000 | [diff] [blame] | 4 | * Copyright (C) 2007-2009 coresystems GmbH |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 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. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include <console/console.h> |
| 17 | #include <arch/io.h> |
| 18 | #include <stdint.h> |
| 19 | #include <device/device.h> |
| 20 | #include <device/pci.h> |
| 21 | #include <device/pci_ids.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
Stefan Reinauer | fd611f9 | 2013-02-27 23:45:20 +0100 | [diff] [blame] | 24 | #include <cbmem.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 25 | #include <cpu/cpu.h> |
Stefan Reinauer | ab87254 | 2011-10-14 15:18:29 -0700 | [diff] [blame] | 26 | #include <arch/acpi.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 27 | #include "i945.h" |
| 28 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 29 | static int get_pcie_bar(u32 *base) |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 30 | { |
| 31 | device_t dev; |
| 32 | u32 pciexbar_reg; |
| 33 | |
| 34 | *base = 0; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 35 | |
| 36 | dev = dev_find_slot(0, PCI_DEVFN(0, 0)); |
| 37 | if (!dev) |
| 38 | return 0; |
Stefan Reinauer | 109ab31 | 2009-08-12 16:08:05 +0000 | [diff] [blame] | 39 | |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 40 | pciexbar_reg = pci_read_config32(dev, PCIEXBAR); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 41 | |
| 42 | if (!(pciexbar_reg & (1 << 0))) |
| 43 | return 0; |
| 44 | |
| 45 | switch ((pciexbar_reg >> 1) & 3) { |
| 46 | case 0: // 256MB |
| 47 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 48 | return 256; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 49 | case 1: // 128M |
| 50 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 51 | return 128; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 52 | case 2: // 64M |
| 53 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26)); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 54 | return 64; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | return 0; |
| 58 | } |
| 59 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 60 | static void pci_domain_set_resources(device_t dev) |
| 61 | { |
| 62 | uint32_t pci_tolm; |
| 63 | uint8_t tolud, reg8; |
| 64 | uint16_t reg16; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 65 | unsigned long long tomk, tomk_stolen; |
Kyösti Mälkki | f7bfc34 | 2013-10-18 11:02:46 +0300 | [diff] [blame] | 66 | uint64_t uma_memory_base = 0, uma_memory_size = 0; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 67 | uint64_t tseg_memory_base = 0, tseg_memory_size = 0; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 68 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 69 | /* Can we find out how much memory we can use at most |
| 70 | * this way? |
| 71 | */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 72 | pci_tolm = find_pci_tolm(dev->link_list); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 73 | printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 74 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 75 | printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n", |
Paul Menzel | 355ce38 | 2014-05-30 13:58:59 +0200 | [diff] [blame] | 76 | pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), BSM)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 77 | |
Paul Menzel | 66f10b1 | 2014-05-25 13:50:14 +0200 | [diff] [blame] | 78 | tolud = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), TOLUD); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 79 | printk(BIOS_SPEW, "Top of Low Used DRAM: 0x%08x\n", tolud << 24); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 80 | |
| 81 | tomk = tolud << 14; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 82 | tomk_stolen = tomk; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 83 | |
| 84 | /* Note: subtract IGD device and TSEG */ |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 85 | reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC); |
| 86 | if (!(reg16 & 2)) { |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 87 | printk(BIOS_DEBUG, "IGD decoded, subtracting "); |
Arthur Heymans | 874a8f9 | 2016-05-19 16:06:09 +0200 | [diff] [blame] | 88 | int uma_size = decode_igd_memory_size((reg16 >> 4) & 7); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 89 | |
| 90 | printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); |
| 91 | tomk_stolen -= uma_size; |
| 92 | |
| 93 | /* For reserving UMA memory in the memory map */ |
| 94 | uma_memory_base = tomk_stolen * 1024ULL; |
| 95 | uma_memory_size = uma_size * 1024ULL; |
| 96 | } |
| 97 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 98 | reg8 = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), 0x9e); |
| 99 | if (reg8 & 1) { |
| 100 | int tseg_size = 0; |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 101 | printk(BIOS_DEBUG, "TSEG decoded, subtracting "); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 102 | reg8 >>= 1; |
| 103 | reg8 &= 3; |
| 104 | switch (reg8) { |
| 105 | case 0: |
| 106 | tseg_size = 1024; |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 107 | break; /* TSEG = 1M */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 108 | case 1: |
| 109 | tseg_size = 2048; |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 110 | break; /* TSEG = 2M */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 111 | case 2: |
| 112 | tseg_size = 8192; |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 113 | break; /* TSEG = 8M */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 114 | } |
| 115 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 116 | printk(BIOS_DEBUG, "%dM\n", tseg_size >> 10); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 117 | tomk_stolen -= tseg_size; |
| 118 | |
| 119 | /* For reserving TSEG memory in the memory map */ |
| 120 | tseg_memory_base = tomk_stolen * 1024ULL; |
| 121 | tseg_memory_size = tseg_size * 1024ULL; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 124 | /* The following needs to be 2 lines, otherwise the second |
| 125 | * number is always 0 |
| 126 | */ |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 127 | printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk_stolen); |
| 128 | printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk_stolen >> 10)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 129 | |
| 130 | /* Report the memory regions */ |
| 131 | ram_resource(dev, 3, 0, 640); |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 132 | ram_resource(dev, 4, 768, (tomk - 768)); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 133 | uma_resource(dev, 5, uma_memory_base >> 10, uma_memory_size >> 10); |
| 134 | mmio_resource(dev, 6, tseg_memory_base >> 10, tseg_memory_size >> 10); |
| 135 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 136 | assign_resources(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 139 | /* TODO We could determine how many PCIe busses we need in |
| 140 | * the bar. For now that number is hardcoded to a max of 64. |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 141 | * See e7525/northbridge.c for an example. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 142 | */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 143 | static struct device_operations pci_domain_ops = { |
| 144 | .read_resources = pci_domain_read_resources, |
| 145 | .set_resources = pci_domain_set_resources, |
Myles Watson | 7eac445 | 2010-06-17 16:16:56 +0000 | [diff] [blame] | 146 | .enable_resources = NULL, |
| 147 | .init = NULL, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 148 | .scan_bus = pci_domain_scan_bus, |
Kyösti Mälkki | 872c922 | 2013-07-03 09:44:28 +0300 | [diff] [blame] | 149 | .ops_pci_bus = pci_bus_default_ops, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 150 | }; |
| 151 | |
| 152 | static void mc_read_resources(device_t dev) |
| 153 | { |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 154 | u32 pcie_config_base; |
| 155 | int buses; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 156 | |
| 157 | pci_dev_read_resources(dev); |
| 158 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 159 | buses = get_pcie_bar(&pcie_config_base); |
| 160 | if (buses) { |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 161 | struct resource *resource = new_resource(dev, PCIEXBAR); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 162 | mmconf_resource_init(resource, pcie_config_base, buses); |
| 163 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 164 | } |
| 165 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 166 | static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| 167 | { |
Stefan Reinauer | 30140a5 | 2009-03-11 16:20:39 +0000 | [diff] [blame] | 168 | if (!vendor || !device) { |
| 169 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 170 | pci_read_config32(dev, PCI_VENDOR_ID)); |
| 171 | } else { |
| 172 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 173 | ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| 174 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | static struct pci_operations intel_pci_ops = { |
| 178 | .set_subsystem = intel_set_subsystem, |
| 179 | }; |
| 180 | |
| 181 | static struct device_operations mc_ops = { |
| 182 | .read_resources = mc_read_resources, |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 183 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 184 | .enable_resources = pci_dev_enable_resources, |
Vladimir Serbinenko | 0e64617 | 2014-08-31 00:27:05 +0200 | [diff] [blame] | 185 | .acpi_fill_ssdt_generator = generate_cpu_entries, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 186 | .scan_bus = 0, |
| 187 | .ops_pci = &intel_pci_ops, |
| 188 | }; |
| 189 | |
Nico Huber | 04be6b5 | 2016-10-22 20:01:34 +0200 | [diff] [blame] | 190 | static const unsigned short pci_device_ids[] = { |
| 191 | 0x2770, /* desktop */ |
| 192 | 0x27a0, 0x27ac, /* mobile */ |
| 193 | 0 }; |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 194 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 195 | static const struct pci_driver mc_driver __pci_driver = { |
| 196 | .ops = &mc_ops, |
| 197 | .vendor = PCI_VENDOR_ID_INTEL, |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 198 | .devices = pci_device_ids, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 199 | }; |
| 200 | |
| 201 | static void cpu_bus_init(device_t dev) |
| 202 | { |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 203 | initialize_cpus(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 206 | static struct device_operations cpu_bus_ops = { |
Edward O'Callaghan | 9f74462 | 2014-10-31 08:12:34 +1100 | [diff] [blame] | 207 | .read_resources = DEVICE_NOOP, |
| 208 | .set_resources = DEVICE_NOOP, |
| 209 | .enable_resources = DEVICE_NOOP, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 210 | .init = cpu_bus_init, |
| 211 | .scan_bus = 0, |
| 212 | }; |
| 213 | |
| 214 | static void enable_dev(device_t dev) |
| 215 | { |
| 216 | /* Set the operations if it is a special bus type */ |
Stefan Reinauer | 4aff445 | 2013-02-12 14:17:15 -0800 | [diff] [blame] | 217 | if (dev->path.type == DEVICE_PATH_DOMAIN) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 218 | dev->ops = &pci_domain_ops; |
Stefan Reinauer | 0aa37c4 | 2013-02-12 15:20:54 -0800 | [diff] [blame] | 219 | } else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 220 | dev->ops = &cpu_bus_ops; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | struct chip_operations northbridge_intel_i945_ops = { |
| 225 | CHIP_NAME("Intel i945 Northbridge") |
| 226 | .enable_dev = enable_dev, |
| 227 | }; |