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 | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; version 2 of the License. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 13 | */ |
| 14 | |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 15 | #include <cbmem.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 16 | #include <console/console.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 17 | #include <device/pci_ops.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 18 | #include <stdint.h> |
| 19 | #include <device/device.h> |
| 20 | #include <device/pci.h> |
| 21 | #include <device/pci_ids.h> |
Stefan Reinauer | ab87254 | 2011-10-14 15:18:29 -0700 | [diff] [blame] | 22 | #include <arch/acpi.h> |
Kyösti Mälkki | f091f4d | 2019-08-14 03:49:21 +0300 | [diff] [blame] | 23 | #include <cpu/intel/smm_reloc.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 24 | #include "i945.h" |
| 25 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 26 | static int get_pcie_bar(u32 *base) |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 27 | { |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 28 | struct device *dev; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 29 | u32 pciexbar_reg; |
| 30 | |
| 31 | *base = 0; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 32 | |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 33 | dev = pcidev_on_root(0, 0); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 34 | if (!dev) |
| 35 | return 0; |
Stefan Reinauer | 109ab31 | 2009-08-12 16:08:05 +0000 | [diff] [blame] | 36 | |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 37 | pciexbar_reg = pci_read_config32(dev, PCIEXBAR); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 38 | |
| 39 | if (!(pciexbar_reg & (1 << 0))) |
| 40 | return 0; |
| 41 | |
| 42 | switch ((pciexbar_reg >> 1) & 3) { |
| 43 | case 0: // 256MB |
| 44 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 45 | return 256; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 46 | case 1: // 128M |
| 47 | *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] | 48 | return 128; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 49 | case 2: // 64M |
| 50 | *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] | 51 | return 64; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | return 0; |
| 55 | } |
| 56 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 57 | static void mch_domain_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 58 | { |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 59 | uint32_t pci_tolm, tseg_sizek, cbmem_topk, delta_cbmem; |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 60 | uint8_t tolud; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 61 | uint16_t reg16; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 62 | unsigned long long tomk, tomk_stolen; |
Kyösti Mälkki | f7bfc34 | 2013-10-18 11:02:46 +0300 | [diff] [blame] | 63 | uint64_t uma_memory_base = 0, uma_memory_size = 0; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 64 | uint64_t tseg_memory_base = 0, tseg_memory_size = 0; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 65 | struct device *const d0f0 = pcidev_on_root(0, 0); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 66 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 67 | pci_domain_read_resources(dev); |
| 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 | |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 75 | tolud = pci_read_config8(d0f0, TOLUD); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 76 | 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] | 77 | |
| 78 | tomk = tolud << 14; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 79 | tomk_stolen = tomk; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 80 | |
| 81 | /* Note: subtract IGD device and TSEG */ |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 82 | reg16 = pci_read_config16(d0f0, GGC); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 83 | if (!(reg16 & 2)) { |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 84 | printk(BIOS_DEBUG, "IGD decoded, subtracting "); |
Arthur Heymans | 874a8f9 | 2016-05-19 16:06:09 +0200 | [diff] [blame] | 85 | int uma_size = decode_igd_memory_size((reg16 >> 4) & 7); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 86 | |
| 87 | printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); |
| 88 | tomk_stolen -= uma_size; |
| 89 | |
| 90 | /* For reserving UMA memory in the memory map */ |
| 91 | uma_memory_base = tomk_stolen * 1024ULL; |
| 92 | uma_memory_size = uma_size * 1024ULL; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 93 | |
| 94 | printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n", |
| 95 | (unsigned int)uma_memory_base); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 96 | } |
| 97 | |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 98 | tseg_sizek = decode_tseg_size(pci_read_config8(d0f0, ESMRAMC)) >> 10; |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 99 | printk(BIOS_DEBUG, "TSEG decoded, subtracting %dM\n", tseg_sizek >> 10); |
| 100 | tomk_stolen -= tseg_sizek; |
| 101 | tseg_memory_base = tomk_stolen * 1024ULL; |
| 102 | tseg_memory_size = tseg_sizek * 1024ULL; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 103 | |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 104 | /* cbmem_top can be shifted downwards due to alignment. |
| 105 | Mark the region between cbmem_top and tomk as unusable */ |
| 106 | cbmem_topk = ((uint32_t)cbmem_top() >> 10); |
| 107 | delta_cbmem = tomk_stolen - cbmem_topk; |
| 108 | tomk_stolen -= delta_cbmem; |
| 109 | |
| 110 | printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%xK\n", |
| 111 | delta_cbmem); |
| 112 | |
| 113 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 114 | /* The following needs to be 2 lines, otherwise the second |
| 115 | * number is always 0 |
| 116 | */ |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 117 | printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk_stolen); |
| 118 | printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk_stolen >> 10)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 119 | |
| 120 | /* Report the memory regions */ |
| 121 | ram_resource(dev, 3, 0, 640); |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 122 | ram_resource(dev, 4, 768, (tomk - 768)); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 123 | uma_resource(dev, 5, uma_memory_base >> 10, uma_memory_size >> 10); |
| 124 | mmio_resource(dev, 6, tseg_memory_base >> 10, tseg_memory_size >> 10); |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 125 | uma_resource(dev, 7, cbmem_topk, delta_cbmem); |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | static void mch_domain_set_resources(struct device *dev) |
| 129 | { |
| 130 | struct resource *res; |
| 131 | |
| 132 | for (res = dev->resource_list; res; res = res->next) |
| 133 | report_resource_stored(dev, res, ""); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 134 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 135 | assign_resources(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 136 | } |
| 137 | |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 138 | static const char *northbridge_acpi_name(const struct device *dev) |
| 139 | { |
| 140 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 141 | return "PCI0"; |
| 142 | |
| 143 | if (dev->path.type != DEVICE_PATH_PCI || dev->bus->secondary != 0) |
| 144 | return NULL; |
| 145 | |
| 146 | switch (dev->path.pci.devfn) { |
| 147 | case PCI_DEVFN(0, 0): |
| 148 | return "MCHC"; |
| 149 | } |
| 150 | |
| 151 | return NULL; |
| 152 | } |
| 153 | |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 154 | void northbridge_write_smram(u8 smram) |
| 155 | { |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 156 | struct device *dev = pcidev_on_root(0, 0); |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 157 | |
| 158 | if (dev == NULL) |
| 159 | die("could not find pci 00:00.0!\n"); |
| 160 | |
| 161 | pci_write_config8(dev, SMRAM, smram); |
| 162 | } |
| 163 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 164 | /* TODO We could determine how many PCIe busses we need in |
| 165 | * the bar. For now that number is hardcoded to a max of 64. |
| 166 | */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 167 | static struct device_operations pci_domain_ops = { |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 168 | .read_resources = mch_domain_read_resources, |
| 169 | .set_resources = mch_domain_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 170 | .scan_bus = pci_domain_scan_bus, |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 171 | .acpi_name = northbridge_acpi_name, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 172 | }; |
| 173 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 174 | static void mc_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 175 | { |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 176 | u32 pcie_config_base; |
| 177 | int buses; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 178 | |
| 179 | pci_dev_read_resources(dev); |
| 180 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 181 | buses = get_pcie_bar(&pcie_config_base); |
| 182 | if (buses) { |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 183 | struct resource *resource = new_resource(dev, PCIEXBAR); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 184 | mmconf_resource_init(resource, pcie_config_base, buses); |
| 185 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 186 | } |
| 187 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 188 | static struct pci_operations intel_pci_ops = { |
Subrata Banik | 4a0f071 | 2019-03-20 14:29:47 +0530 | [diff] [blame] | 189 | .set_subsystem = pci_dev_set_subsystem, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 190 | }; |
| 191 | |
| 192 | static struct device_operations mc_ops = { |
| 193 | .read_resources = mc_read_resources, |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 194 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 195 | .enable_resources = pci_dev_enable_resources, |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 196 | .acpi_fill_ssdt = generate_cpu_entries, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 197 | .ops_pci = &intel_pci_ops, |
| 198 | }; |
| 199 | |
Nico Huber | 04be6b5 | 2016-10-22 20:01:34 +0200 | [diff] [blame] | 200 | static const unsigned short pci_device_ids[] = { |
| 201 | 0x2770, /* desktop */ |
| 202 | 0x27a0, 0x27ac, /* mobile */ |
| 203 | 0 }; |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 204 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 205 | static const struct pci_driver mc_driver __pci_driver = { |
| 206 | .ops = &mc_ops, |
| 207 | .vendor = PCI_VENDOR_ID_INTEL, |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 208 | .devices = pci_device_ids, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 209 | }; |
| 210 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 211 | static struct device_operations cpu_bus_ops = { |
Edward O'Callaghan | 9f74462 | 2014-10-31 08:12:34 +1100 | [diff] [blame] | 212 | .read_resources = DEVICE_NOOP, |
| 213 | .set_resources = DEVICE_NOOP, |
| 214 | .enable_resources = DEVICE_NOOP, |
Kyösti Mälkki | b3267e0 | 2019-08-13 16:44:04 +0300 | [diff] [blame] | 215 | .init = mp_cpu_bus_init, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 216 | }; |
| 217 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 218 | static void enable_dev(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 219 | { |
| 220 | /* Set the operations if it is a special bus type */ |
Arthur Heymans | 70a8e34 | 2017-03-09 11:30:23 +0100 | [diff] [blame] | 221 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 222 | dev->ops = &pci_domain_ops; |
Arthur Heymans | 70a8e34 | 2017-03-09 11:30:23 +0100 | [diff] [blame] | 223 | else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 224 | dev->ops = &cpu_bus_ops; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | struct chip_operations northbridge_intel_i945_ops = { |
| 228 | CHIP_NAME("Intel i945 Northbridge") |
| 229 | .enable_dev = enable_dev, |
| 230 | }; |