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> |
Arthur Heymans | 98c9257 | 2022-11-07 11:39:58 +0100 | [diff] [blame] | 13 | #include <cpu/intel/speedstep.h> |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 14 | #include <cpu/x86/smm.h> |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 15 | #include "i945.h" |
| 16 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 17 | static void mch_domain_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 18 | { |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 19 | uint32_t pci_tolm; |
| 20 | uintptr_t tolud; |
Nico Huber | 4e008c6 | 2019-01-12 15:28:43 +0100 | [diff] [blame] | 21 | struct device *const d0f0 = pcidev_on_root(0, 0); |
Kyösti Mälkki | c1d4d0b | 2021-06-26 19:09:05 +0300 | [diff] [blame] | 22 | int idx = 3; |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 23 | |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 24 | pci_domain_read_resources(dev); |
| 25 | |
Stefan Reinauer | 71a3d96 | 2009-07-21 21:44:24 +0000 | [diff] [blame] | 26 | /* Can we find out how much memory we can use at most |
| 27 | * this way? |
| 28 | */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 29 | pci_tolm = find_pci_tolm(dev->link_list); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 30 | printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 31 | |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 32 | tolud = pci_read_config8(d0f0, TOLUD) << 24; |
| 33 | printk(BIOS_SPEW, "Top of Low Used DRAM: 0x%08lx\n", tolud); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 34 | |
| 35 | /* Report the memory regions */ |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 36 | ram_range(dev, idx++, 0, 0xa0000); |
| 37 | ram_from_to(dev, idx++, 1 * MiB, (uintptr_t)cbmem_top()); |
| 38 | |
| 39 | /* TSEG */ |
| 40 | uintptr_t tseg_base; |
| 41 | size_t tseg_size; |
| 42 | smm_region(&tseg_base, &tseg_size); |
| 43 | mmio_range(dev, idx++, tseg_base, tseg_size); |
| 44 | |
| 45 | /* cbmem_top can be shifted downwards due to alignment. |
| 46 | Mark the region between cbmem_top and tseg_base as unusable */ |
| 47 | if ((uintptr_t)cbmem_top() < tseg_base) { |
| 48 | printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%lx\n", |
| 49 | tseg_base - (uintptr_t)cbmem_top()); |
| 50 | mmio_from_to(dev, idx++, (uintptr_t)cbmem_top(), tseg_base); |
| 51 | } |
| 52 | if (tseg_base + tseg_size < tolud) |
| 53 | mmio_from_to(dev, idx++, tseg_base + tseg_size, tolud); |
| 54 | |
Furquan Shaikh | 7cf96ae | 2020-05-16 23:55:02 -0700 | [diff] [blame] | 55 | /* legacy VGA memory */ |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 56 | mmio_from_to(dev, idx++, 0xa0000, 0xc0000); |
Arthur Heymans | 15ef9b6 | 2021-01-18 00:48:27 +0100 | [diff] [blame] | 57 | /* RAM to be used for option roms and BIOS */ |
Arthur Heymans | 8554954 | 2023-07-05 09:42:09 +0200 | [diff] [blame] | 58 | reserved_ram_from_to(dev, idx++, 0xc0000, 1 * MiB); |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | static void mch_domain_set_resources(struct device *dev) |
| 62 | { |
| 63 | struct resource *res; |
| 64 | |
| 65 | for (res = dev->resource_list; res; res = res->next) |
| 66 | report_resource_stored(dev, res, ""); |
Kyösti Mälkki | 6ff1d36 | 2012-07-27 08:42:20 +0300 | [diff] [blame] | 67 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 68 | assign_resources(dev->link_list); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 69 | } |
| 70 | |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 71 | static const char *northbridge_acpi_name(const struct device *dev) |
| 72 | { |
| 73 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 74 | return "PCI0"; |
| 75 | |
Fabio Aiuto | 61ed4ef | 2022-09-30 14:55:53 +0200 | [diff] [blame] | 76 | if (!is_pci_dev_on_bus(dev, 0)) |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 77 | return NULL; |
| 78 | |
| 79 | switch (dev->path.pci.devfn) { |
| 80 | case PCI_DEVFN(0, 0): |
| 81 | return "MCHC"; |
| 82 | } |
| 83 | |
| 84 | return NULL; |
| 85 | } |
| 86 | |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 87 | void northbridge_write_smram(u8 smram) |
| 88 | { |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 89 | struct device *dev = pcidev_on_root(0, 0); |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 90 | |
Elyes Haouas | 5e6b0f0 | 2022-09-13 09:55:49 +0200 | [diff] [blame] | 91 | if (!dev) |
Arthur Heymans | cf3076e | 2018-04-10 12:57:42 +0200 | [diff] [blame] | 92 | die("could not find pci 00:00.0!\n"); |
| 93 | |
| 94 | pci_write_config8(dev, SMRAM, smram); |
| 95 | } |
| 96 | |
Arthur Heymans | 22d6ee8 | 2022-11-07 10:03:40 +0100 | [diff] [blame] | 97 | struct device_operations i945_pci_domain_ops = { |
Arthur Heymans | 794f56b | 2018-06-15 19:37:23 +0200 | [diff] [blame] | 98 | .read_resources = mch_domain_read_resources, |
| 99 | .set_resources = mch_domain_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 100 | .scan_bus = pci_domain_scan_bus, |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 101 | .acpi_name = northbridge_acpi_name, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 102 | }; |
| 103 | |
Elyes HAOUAS | 658a934 | 2018-02-08 14:46:22 +0100 | [diff] [blame] | 104 | static void mc_read_resources(struct device *dev) |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 105 | { |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 106 | pci_dev_read_resources(dev); |
| 107 | |
Angel Pons | a6b0922 | 2021-01-20 13:00:02 +0100 | [diff] [blame] | 108 | mmconf_resource(dev, PCIEXBAR); |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 109 | } |
| 110 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 111 | static struct device_operations mc_ops = { |
| 112 | .read_resources = mc_read_resources, |
Kyösti Mälkki | 27198ac | 2016-12-02 14:38:13 +0200 | [diff] [blame] | 113 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 114 | .enable_resources = pci_dev_enable_resources, |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 115 | .acpi_fill_ssdt = generate_cpu_entries, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 116 | .ops_pci = &pci_dev_ops_pci, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 117 | }; |
| 118 | |
Nico Huber | 04be6b5 | 2016-10-22 20:01:34 +0200 | [diff] [blame] | 119 | static const unsigned short pci_device_ids[] = { |
| 120 | 0x2770, /* desktop */ |
| 121 | 0x27a0, 0x27ac, /* mobile */ |
| 122 | 0 }; |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 123 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 124 | static const struct pci_driver mc_driver __pci_driver = { |
| 125 | .ops = &mc_ops, |
Felix Singer | 43b7f41 | 2022-03-07 04:34:52 +0100 | [diff] [blame] | 126 | .vendor = PCI_VID_INTEL, |
Vladimir Serbinenko | b67eaee | 2014-11-16 23:08:05 +0100 | [diff] [blame] | 127 | .devices = pci_device_ids, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 128 | }; |
| 129 | |
Arthur Heymans | 22d6ee8 | 2022-11-07 10:03:40 +0100 | [diff] [blame] | 130 | struct device_operations i945_cpu_bus_ops = { |
Nico Huber | 2f8ba69 | 2020-04-05 14:05:24 +0200 | [diff] [blame] | 131 | .read_resources = noop_read_resources, |
| 132 | .set_resources = noop_set_resources, |
Kyösti Mälkki | b3267e0 | 2019-08-13 16:44:04 +0300 | [diff] [blame] | 133 | .init = mp_cpu_bus_init, |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 134 | }; |
| 135 | |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 136 | struct chip_operations northbridge_intel_i945_ops = { |
| 137 | CHIP_NAME("Intel i945 Northbridge") |
Stefan Reinauer | 278534d | 2008-10-29 04:51:07 +0000 | [diff] [blame] | 138 | }; |
Arthur Heymans | 98c9257 | 2022-11-07 11:39:58 +0100 | [diff] [blame] | 139 | |
| 140 | bool northbridge_support_slfm(void) |
| 141 | { |
| 142 | return false; |
| 143 | } |