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> |
Angel Pons | cff4d16 | 2020-08-03 16:11:53 +0200 | [diff] [blame] | 4 | #include <commonlib/helpers.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 5 | #include <console/console.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 6 | #include <device/pci_ops.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 7 | #include <stdint.h> |
| 8 | #include <device/device.h> |
| 9 | #include <device/pci.h> |
| 10 | #include <device/pci_ids.h> |
Furquan Shaikh | 76cedd2 | 2020-05-02 10:24:23 -0700 | [diff] [blame] | 11 | #include <acpi/acpi.h> |
Kyösti Mälkki | f091f4d | 2019-08-14 03:49:21 +0300 | [diff] [blame] | 12 | #include <cpu/intel/smm_reloc.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 13 | #include "i945.h" |
| 14 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 15 | static void mch_domain_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 16 | { |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 17 | uint32_t pci_tolm, tseg_sizek, cbmem_topk, delta_cbmem; |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 18 | uint8_t tolud; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 19 | uint16_t reg16; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 20 | unsigned long long tomk, tomk_stolen; |
Kyösti Mälkki | f7bfc34 | 2013-10-18 11:02:46 +0300 | [diff] [blame] | 21 | uint64_t uma_memory_base = 0, uma_memory_size = 0; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 22 | uint64_t tseg_memory_base = 0, tseg_memory_size = 0; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 23 | struct device *const d0f0 = pcidev_on_root(0, 0); |
Kyösti Mälkki | c1d4d0b | 2021-06-26 19:09:05 +0300 | [diff] [blame] | 24 | int idx = 3; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 25 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 26 | pci_domain_read_resources(dev); |
| 27 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 28 | /* Can we find out how much memory we can use at most |
| 29 | * this way? |
| 30 | */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 31 | pci_tolm = find_pci_tolm(dev->link_list); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 32 | printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 33 | |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 34 | tolud = pci_read_config8(d0f0, TOLUD); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 35 | 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] | 36 | |
| 37 | tomk = tolud << 14; |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 38 | tomk_stolen = tomk; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 39 | |
| 40 | /* Note: subtract IGD device and TSEG */ |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 41 | reg16 = pci_read_config16(d0f0, GGC); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 42 | if (!(reg16 & 2)) { |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 43 | printk(BIOS_DEBUG, "IGD decoded, subtracting "); |
Arthur Heymans | 874a8f9 | 2016-05-19 16:06:09 +0200 | [diff] [blame] | 44 | int uma_size = decode_igd_memory_size((reg16 >> 4) & 7); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 45 | |
Arthur Heymans | a6e4afc | 2021-01-18 00:36:54 +0100 | [diff] [blame] | 46 | printk(BIOS_DEBUG, "%dM UMA\n", uma_size / KiB); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 47 | tomk_stolen -= uma_size; |
| 48 | |
| 49 | /* For reserving UMA memory in the memory map */ |
| 50 | uma_memory_base = tomk_stolen * 1024ULL; |
| 51 | uma_memory_size = uma_size * 1024ULL; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 52 | |
| 53 | printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n", |
| 54 | (unsigned int)uma_memory_base); |
Kyösti Mälkki | 15935eb | 2014-05-31 16:07:14 +0300 | [diff] [blame] | 55 | } |
| 56 | |
Arthur Heymans | a6e4afc | 2021-01-18 00:36:54 +0100 | [diff] [blame] | 57 | tseg_sizek = decode_tseg_size(pci_read_config8(d0f0, ESMRAMC)) / KiB; |
| 58 | printk(BIOS_DEBUG, "TSEG decoded, subtracting %dM\n", tseg_sizek / KiB); |
Arthur Heymans | f6d1477 | 2018-01-26 11:50:04 +0100 | [diff] [blame] | 59 | tomk_stolen -= tseg_sizek; |
| 60 | tseg_memory_base = tomk_stolen * 1024ULL; |
| 61 | tseg_memory_size = tseg_sizek * 1024ULL; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 62 | |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 63 | /* cbmem_top can be shifted downwards due to alignment. |
| 64 | Mark the region between cbmem_top and tomk as unusable */ |
Elyes HAOUAS | 964055d | 2022-01-14 18:56:49 +0100 | [diff] [blame] | 65 | cbmem_topk = ((uintptr_t)cbmem_top() / KiB); |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 66 | delta_cbmem = tomk_stolen - cbmem_topk; |
| 67 | tomk_stolen -= delta_cbmem; |
| 68 | |
Elyes HAOUAS | 3dff32c | 2020-03-30 17:16:51 +0200 | [diff] [blame] | 69 | 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] | 70 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 71 | /* The following needs to be 2 lines, otherwise the second |
| 72 | * number is always 0 |
| 73 | */ |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 74 | printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk_stolen); |
Arthur Heymans | a6e4afc | 2021-01-18 00:36:54 +0100 | [diff] [blame] | 75 | printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk_stolen / KiB)); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 76 | |
| 77 | /* Report the memory regions */ |
Kyösti Mälkki | 27d6299 | 2022-05-24 20:25:58 +0300 | [diff] [blame] | 78 | ram_resource_kb(dev, idx++, 0, 0xa0000 / KiB); |
| 79 | ram_resource_kb(dev, idx++, 1 * MiB / KiB, (tomk - 1 * MiB / KiB)); |
| 80 | uma_resource_kb(dev, idx++, uma_memory_base / KiB, uma_memory_size / KiB); |
| 81 | mmio_resource_kb(dev, idx++, tseg_memory_base / KiB, tseg_memory_size / KiB); |
| 82 | uma_resource_kb(dev, idx++, cbmem_topk, delta_cbmem); |
Furquan Shaikh | 7cf96ae | 2020-05-16 23:55:02 -0700 | [diff] [blame] | 83 | /* legacy VGA memory */ |
Kyösti Mälkki | 27d6299 | 2022-05-24 20:25:58 +0300 | [diff] [blame] | 84 | mmio_resource_kb(dev, idx++, 0xa0000 / KiB, (0xc0000 - 0xa0000) / KiB); |
Arthur Heymans | 15ef9b6 | 2021-01-18 00:48:27 +0100 | [diff] [blame] | 85 | /* RAM to be used for option roms and BIOS */ |
Kyösti Mälkki | 27d6299 | 2022-05-24 20:25:58 +0300 | [diff] [blame] | 86 | reserved_ram_resource_kb(dev, idx++, 0xc0000 / KiB, (1 * MiB - 0xc0000) / KiB); |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | static void mch_domain_set_resources(struct device *dev) |
| 90 | { |
| 91 | struct resource *res; |
| 92 | |
| 93 | for (res = dev->resource_list; res; res = res->next) |
| 94 | report_resource_stored(dev, res, ""); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 95 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 96 | assign_resources(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 97 | } |
| 98 | |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 99 | static const char *northbridge_acpi_name(const struct device *dev) |
| 100 | { |
| 101 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 102 | return "PCI0"; |
| 103 | |
Fabio Aiuto | 61ed4ef | 2022-09-30 14:55:53 +0200 | [diff] [blame] | 104 | if (!is_pci_dev_on_bus(dev, 0)) |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 105 | return NULL; |
| 106 | |
| 107 | switch (dev->path.pci.devfn) { |
| 108 | case PCI_DEVFN(0, 0): |
| 109 | return "MCHC"; |
| 110 | } |
| 111 | |
| 112 | return NULL; |
| 113 | } |
| 114 | |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 115 | void northbridge_write_smram(u8 smram) |
| 116 | { |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 117 | struct device *dev = pcidev_on_root(0, 0); |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 118 | |
Elyes Haouas | 5e6b0f0 | 2022-09-13 09:55:49 +0200 | [diff] [blame] | 119 | if (!dev) |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 120 | die("could not find pci 00:00.0!\n"); |
| 121 | |
| 122 | pci_write_config8(dev, SMRAM, smram); |
| 123 | } |
| 124 | |
Arthur Heymans | 22d6ee8 | 2022-11-07 10:03:40 +0100 | [diff] [blame] | 125 | struct device_operations i945_pci_domain_ops = { |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 126 | .read_resources = mch_domain_read_resources, |
| 127 | .set_resources = mch_domain_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 128 | .scan_bus = pci_domain_scan_bus, |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 129 | .acpi_name = northbridge_acpi_name, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 130 | }; |
| 131 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 132 | static void mc_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 133 | { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 134 | pci_dev_read_resources(dev); |
| 135 | |
Angel Pons | a6b0922 | 2021-01-20 13:00:02 +0100 | [diff] [blame] | 136 | mmconf_resource(dev, PCIEXBAR); |
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 | static struct device_operations mc_ops = { |
| 140 | .read_resources = mc_read_resources, |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 141 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 142 | .enable_resources = pci_dev_enable_resources, |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 143 | .acpi_fill_ssdt = generate_cpu_entries, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 144 | .ops_pci = &pci_dev_ops_pci, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 145 | }; |
| 146 | |
Nico Huber | 04be6b5 | 2016-10-22 20:01:34 +0200 | [diff] [blame] | 147 | static const unsigned short pci_device_ids[] = { |
| 148 | 0x2770, /* desktop */ |
| 149 | 0x27a0, 0x27ac, /* mobile */ |
| 150 | 0 }; |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 151 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 152 | static const struct pci_driver mc_driver __pci_driver = { |
| 153 | .ops = &mc_ops, |
Felix Singer | 43b7f41 | 2022-03-07 04:34:52 +0100 | [diff] [blame] | 154 | .vendor = PCI_VID_INTEL, |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 155 | .devices = pci_device_ids, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 156 | }; |
| 157 | |
Arthur Heymans | 22d6ee8 | 2022-11-07 10:03:40 +0100 | [diff] [blame] | 158 | struct device_operations i945_cpu_bus_ops = { |
Nico Huber | 2f8ba69 | 2020-04-05 14:05:24 +0200 | [diff] [blame] | 159 | .read_resources = noop_read_resources, |
| 160 | .set_resources = noop_set_resources, |
Kyösti Mälkki | b3267e0 | 2019-08-13 16:44:04 +0300 | [diff] [blame] | 161 | .init = mp_cpu_bus_init, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 162 | }; |
| 163 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 164 | struct chip_operations northbridge_intel_i945_ops = { |
| 165 | CHIP_NAME("Intel i945 Northbridge") |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 166 | }; |