Angel Pons | 4b42983 | 2020-04-02 23:48:50 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 2 | |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 3 | #include <cbmem.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 4 | #include <console/console.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 5 | #include <device/pci_ops.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 6 | #include <stdint.h> |
| 7 | #include <device/device.h> |
| 8 | #include <device/pci.h> |
| 9 | #include <device/pci_ids.h> |
Furquan Shaikh | 76cedd2 | 2020-05-02 10:24:23 -0700 | [diff] [blame] | 10 | #include <acpi/acpi.h> |
Kyösti Mälkki | f091f4d | 2019-08-14 03:49:21 +0300 | [diff] [blame] | 11 | #include <cpu/intel/smm_reloc.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 12 | #include "i945.h" |
| 13 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 14 | static int get_pcie_bar(u32 *base) |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 15 | { |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 16 | struct device *dev; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 17 | u32 pciexbar_reg; |
| 18 | |
| 19 | *base = 0; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 20 | |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 21 | dev = pcidev_on_root(0, 0); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 22 | if (!dev) |
| 23 | return 0; |
Stefan Reinauer | 109ab31 | 2009-08-12 16:08:05 +0000 | [diff] [blame] | 24 | |
Stefan Reinauer | aca6ec6 | 2009-10-26 17:12:21 +0000 | [diff] [blame] | 25 | pciexbar_reg = pci_read_config32(dev, PCIEXBAR); |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 26 | |
| 27 | if (!(pciexbar_reg & (1 << 0))) |
| 28 | return 0; |
| 29 | |
| 30 | switch ((pciexbar_reg >> 1) & 3) { |
| 31 | case 0: // 256MB |
| 32 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 33 | return 256; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 34 | case 1: // 128M |
| 35 | *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] | 36 | return 128; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 37 | case 2: // 64M |
| 38 | *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] | 39 | return 64; |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 40 | } |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 45 | static void mch_domain_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 46 | { |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 47 | uint32_t pci_tolm, tseg_sizek, cbmem_topk, delta_cbmem; |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 48 | uint8_t tolud; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 49 | uint16_t reg16; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 50 | unsigned long long tomk, tomk_stolen; |
Kyösti Mälkki | f7bfc34 | 2013-10-18 11:02:46 +0300 | [diff] [blame] | 51 | uint64_t uma_memory_base = 0, uma_memory_size = 0; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 52 | uint64_t tseg_memory_base = 0, tseg_memory_size = 0; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 53 | struct device *const d0f0 = pcidev_on_root(0, 0); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 54 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 55 | pci_domain_read_resources(dev); |
| 56 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 57 | /* Can we find out how much memory we can use at most |
| 58 | * this way? |
| 59 | */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 60 | pci_tolm = find_pci_tolm(dev->link_list); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 61 | printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 62 | |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 63 | tolud = pci_read_config8(d0f0, TOLUD); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 64 | 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] | 65 | |
| 66 | tomk = tolud << 14; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 67 | tomk_stolen = tomk; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 68 | |
| 69 | /* Note: subtract IGD device and TSEG */ |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 70 | reg16 = pci_read_config16(d0f0, GGC); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 71 | if (!(reg16 & 2)) { |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 72 | printk(BIOS_DEBUG, "IGD decoded, subtracting "); |
Arthur Heymans | 874a8f9 | 2016-05-19 16:06:09 +0200 | [diff] [blame] | 73 | int uma_size = decode_igd_memory_size((reg16 >> 4) & 7); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 74 | |
| 75 | printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); |
| 76 | tomk_stolen -= uma_size; |
| 77 | |
| 78 | /* For reserving UMA memory in the memory map */ |
| 79 | uma_memory_base = tomk_stolen * 1024ULL; |
| 80 | uma_memory_size = uma_size * 1024ULL; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 81 | |
| 82 | printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n", |
| 83 | (unsigned int)uma_memory_base); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 84 | } |
| 85 | |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 86 | tseg_sizek = decode_tseg_size(pci_read_config8(d0f0, ESMRAMC)) >> 10; |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 87 | printk(BIOS_DEBUG, "TSEG decoded, subtracting %dM\n", tseg_sizek >> 10); |
| 88 | tomk_stolen -= tseg_sizek; |
| 89 | tseg_memory_base = tomk_stolen * 1024ULL; |
| 90 | tseg_memory_size = tseg_sizek * 1024ULL; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 91 | |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 92 | /* cbmem_top can be shifted downwards due to alignment. |
| 93 | Mark the region between cbmem_top and tomk as unusable */ |
| 94 | cbmem_topk = ((uint32_t)cbmem_top() >> 10); |
| 95 | delta_cbmem = tomk_stolen - cbmem_topk; |
| 96 | tomk_stolen -= delta_cbmem; |
| 97 | |
Elyes HAOUAS | 3dff32c | 2020-03-30 17:16:51 +0200 | [diff] [blame] | 98 | printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%xK\n", delta_cbmem); |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 99 | |
| 100 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 101 | /* The following needs to be 2 lines, otherwise the second |
| 102 | * number is always 0 |
| 103 | */ |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 104 | printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk_stolen); |
| 105 | printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk_stolen >> 10)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 106 | |
| 107 | /* Report the memory regions */ |
| 108 | ram_resource(dev, 3, 0, 640); |
Stefan Reinauer | 3c7f46b | 2009-02-27 23:09:55 +0000 | [diff] [blame] | 109 | ram_resource(dev, 4, 768, (tomk - 768)); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 110 | uma_resource(dev, 5, uma_memory_base >> 10, uma_memory_size >> 10); |
| 111 | mmio_resource(dev, 6, tseg_memory_base >> 10, tseg_memory_size >> 10); |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 112 | uma_resource(dev, 7, cbmem_topk, delta_cbmem); |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | static void mch_domain_set_resources(struct device *dev) |
| 116 | { |
| 117 | struct resource *res; |
| 118 | |
| 119 | for (res = dev->resource_list; res; res = res->next) |
| 120 | report_resource_stored(dev, res, ""); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 121 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 122 | assign_resources(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 125 | static const char *northbridge_acpi_name(const struct device *dev) |
| 126 | { |
| 127 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 128 | return "PCI0"; |
| 129 | |
| 130 | if (dev->path.type != DEVICE_PATH_PCI || dev->bus->secondary != 0) |
| 131 | return NULL; |
| 132 | |
| 133 | switch (dev->path.pci.devfn) { |
| 134 | case PCI_DEVFN(0, 0): |
| 135 | return "MCHC"; |
| 136 | } |
| 137 | |
| 138 | return NULL; |
| 139 | } |
| 140 | |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 141 | void northbridge_write_smram(u8 smram) |
| 142 | { |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 143 | struct device *dev = pcidev_on_root(0, 0); |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 144 | |
| 145 | if (dev == NULL) |
| 146 | die("could not find pci 00:00.0!\n"); |
| 147 | |
| 148 | pci_write_config8(dev, SMRAM, smram); |
| 149 | } |
| 150 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 151 | /* TODO We could determine how many PCIe busses we need in |
| 152 | * the bar. For now that number is hardcoded to a max of 64. |
| 153 | */ |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 154 | static struct device_operations pci_domain_ops = { |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 155 | .read_resources = mch_domain_read_resources, |
| 156 | .set_resources = mch_domain_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 157 | .scan_bus = pci_domain_scan_bus, |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 158 | .acpi_name = northbridge_acpi_name, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 159 | }; |
| 160 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 161 | static void mc_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 162 | { |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 163 | u32 pcie_config_base; |
| 164 | int buses; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 165 | |
| 166 | pci_dev_read_resources(dev); |
| 167 | |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 168 | buses = get_pcie_bar(&pcie_config_base); |
| 169 | if (buses) { |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 170 | struct resource *resource = new_resource(dev, PCIEXBAR); |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 171 | mmconf_resource_init(resource, pcie_config_base, buses); |
| 172 | } |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 173 | } |
| 174 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 175 | static struct pci_operations intel_pci_ops = { |
Subrata Banik | 4a0f071 | 2019-03-20 14:29:47 +0530 | [diff] [blame] | 176 | .set_subsystem = pci_dev_set_subsystem, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 177 | }; |
| 178 | |
| 179 | static struct device_operations mc_ops = { |
| 180 | .read_resources = mc_read_resources, |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 181 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 182 | .enable_resources = pci_dev_enable_resources, |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 183 | .acpi_fill_ssdt = generate_cpu_entries, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 184 | .ops_pci = &intel_pci_ops, |
| 185 | }; |
| 186 | |
Nico Huber | 04be6b5 | 2016-10-22 20:01:34 +0200 | [diff] [blame] | 187 | static const unsigned short pci_device_ids[] = { |
| 188 | 0x2770, /* desktop */ |
| 189 | 0x27a0, 0x27ac, /* mobile */ |
| 190 | 0 }; |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 191 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 192 | static const struct pci_driver mc_driver __pci_driver = { |
| 193 | .ops = &mc_ops, |
| 194 | .vendor = PCI_VENDOR_ID_INTEL, |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 195 | .devices = pci_device_ids, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 196 | }; |
| 197 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 198 | static struct device_operations cpu_bus_ops = { |
Nico Huber | 2f8ba69 | 2020-04-05 14:05:24 +0200 | [diff] [blame] | 199 | .read_resources = noop_read_resources, |
| 200 | .set_resources = noop_set_resources, |
Kyösti Mälkki | b3267e0 | 2019-08-13 16:44:04 +0300 | [diff] [blame] | 201 | .init = mp_cpu_bus_init, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 202 | }; |
| 203 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 204 | static void enable_dev(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 205 | { |
| 206 | /* Set the operations if it is a special bus type */ |
Arthur Heymans | 70a8e34 | 2017-03-09 11:30:23 +0100 | [diff] [blame] | 207 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 208 | dev->ops = &pci_domain_ops; |
Arthur Heymans | 70a8e34 | 2017-03-09 11:30:23 +0100 | [diff] [blame] | 209 | else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 210 | dev->ops = &cpu_bus_ops; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | struct chip_operations northbridge_intel_i945_ops = { |
| 214 | CHIP_NAME("Intel i945 Northbridge") |
| 215 | .enable_dev = enable_dev, |
| 216 | }; |