Angel Pons | 4b42983 | 2020-04-02 23:48:50 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 2 | |
Felix Held | 928a9c8 | 2022-02-24 00:51:11 +0100 | [diff] [blame] | 3 | #include <arch/hpet.h> |
Arthur Heymans | 17ad459 | 2018-08-06 15:35:28 +0200 | [diff] [blame] | 4 | #include <cbmem.h> |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 5 | #include <console/console.h> |
Arthur Heymans | 95a1142 | 2021-01-18 00:41:35 +0100 | [diff] [blame] | 6 | #include <commonlib/bsd/helpers.h> |
Elyes HAOUAS | 748caed | 2019-12-19 17:02:08 +0100 | [diff] [blame] | 7 | #include <device/pci_def.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 8 | #include <device/pci_ops.h> |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 9 | #include <stdint.h> |
| 10 | #include <device/device.h> |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 11 | #include <boot/tables.h> |
Furquan Shaikh | 76cedd2 | 2020-05-02 10:24:23 -0700 | [diff] [blame] | 12 | #include <acpi/acpi.h> |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 13 | #include <northbridge/intel/pineview/pineview.h> |
Kyösti Mälkki | f091f4d | 2019-08-14 03:49:21 +0300 | [diff] [blame] | 14 | #include <cpu/intel/smm_reloc.h> |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 15 | #include <cpu/x86/smm.h> |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 16 | |
Angel Pons | 39ff703 | 2020-03-09 21:39:44 +0100 | [diff] [blame] | 17 | /* |
| 18 | * Reserve everything between A segment and 1MB: |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 19 | * |
| 20 | * 0xa0000 - 0xbffff: legacy VGA |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 21 | * 0xc0000 - 0xcffff: VGA OPROM (needed by kernel) |
| 22 | * 0xe0000 - 0xfffff: SeaBIOS, if used, otherwise DMI |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 23 | */ |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 24 | |
Elyes HAOUAS | 6275360 | 2018-02-09 08:46:25 +0100 | [diff] [blame] | 25 | static void add_fixed_resources(struct device *dev, int index) |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 26 | { |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 27 | mmio_range(dev, index++, HPET_BASE_ADDRESS, 0x00100000); |
Kyösti Mälkki | 8ee11b3 | 2021-06-27 21:08:32 +0300 | [diff] [blame] | 28 | mmio_from_to(dev, index++, 0xa0000, 0xc0000); |
| 29 | reserved_ram_from_to(dev, index++, 0xc0000, 1 * MiB); |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 30 | } |
| 31 | |
Elyes HAOUAS | 6275360 | 2018-02-09 08:46:25 +0100 | [diff] [blame] | 32 | static void mch_domain_read_resources(struct device *dev) |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 33 | { |
| 34 | u64 tom, touud; |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 35 | u32 tolud; |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 36 | u16 index; |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 37 | |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 38 | struct device *mch = pcidev_on_root(0, 0); |
Arthur Heymans | 15e1b39 | 2018-06-26 21:06:13 +0200 | [diff] [blame] | 39 | |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 40 | index = 3; |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 41 | |
| 42 | pci_domain_read_resources(dev); |
| 43 | |
| 44 | /* Top of Upper Usable DRAM, including remap */ |
Arthur Heymans | 15e1b39 | 2018-06-26 21:06:13 +0200 | [diff] [blame] | 45 | touud = pci_read_config16(mch, TOUUD); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 46 | touud <<= 20; |
| 47 | |
| 48 | /* Top of Lower Usable DRAM */ |
Arthur Heymans | 15e1b39 | 2018-06-26 21:06:13 +0200 | [diff] [blame] | 49 | tolud = pci_read_config16(mch, TOLUD) & 0xfff0; |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 50 | tolud <<= 16; |
| 51 | |
| 52 | /* Top of Memory - does not account for any UMA */ |
Angel Pons | 39ff703 | 2020-03-09 21:39:44 +0100 | [diff] [blame] | 53 | tom = pci_read_config16(mch, TOM) & 0x01ff; |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 54 | tom <<= 27; |
| 55 | |
Angel Pons | 39ff703 | 2020-03-09 21:39:44 +0100 | [diff] [blame] | 56 | printk(BIOS_DEBUG, "TOUUD 0x%llx TOLUD 0x%08x TOM 0x%llx ", touud, tolud, tom); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 57 | |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 58 | /* Graphics memory */ |
Arthur Heymans | 15e1b39 | 2018-06-26 21:06:13 +0200 | [diff] [blame] | 59 | const u16 ggc = pci_read_config16(mch, GGC); |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 60 | const u32 gms_size = decode_igd_memory_size((ggc >> 4) & 0xf) * KiB; |
| 61 | printk(BIOS_DEBUG, "%uM UMA", gms_size / MiB); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 62 | |
| 63 | /* GTT Graphics Stolen Memory Size (GGMS) */ |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 64 | const u32 gsm_size = decode_igd_gtt_size((ggc >> 8) & 0xf) * KiB; |
| 65 | printk(BIOS_DEBUG, " and %uM GTT\n", gsm_size / MiB); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 66 | |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 67 | const u32 igd_base = pci_read_config32(mch, GBSM); |
| 68 | const u32 gtt_base = pci_read_config32(mch, BGSM); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 69 | |
| 70 | /* Report the memory regions */ |
Arthur Heymans | 4141394 | 2023-07-05 09:52:13 +0200 | [diff] [blame] | 71 | ram_range(dev, index++, 0, 0xa0000); |
| 72 | ram_from_to(dev, index++, 1 * MiB, (uintptr_t)cbmem_top()); |
| 73 | uintptr_t tseg_base; |
| 74 | size_t tseg_size; |
| 75 | smm_region(&tseg_base, &tseg_size); |
| 76 | mmio_range(dev, index++, tseg_base, tseg_size); |
| 77 | mmio_range(dev, index++, gtt_base, gsm_size); |
| 78 | mmio_range(dev, index++, igd_base, gms_size); |
| 79 | printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%lx\n", |
| 80 | tseg_base - (uintptr_t)cbmem_top()); |
| 81 | reserved_ram_from_to(dev, index++, (uintptr_t)cbmem_top(), tseg_base); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 82 | |
| 83 | /* |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 84 | * If > 4GB installed then memory from TOLUD to 4GB |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 85 | * is remapped above TOM, TOUUD will account for both |
| 86 | */ |
Kyösti Mälkki | 0a18d64 | 2021-06-28 21:43:31 +0300 | [diff] [blame] | 87 | upper_ram_end(dev, index++, touud); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 88 | |
Angel Pons | 1318ab4 | 2021-01-20 13:31:09 +0100 | [diff] [blame] | 89 | mmconf_resource(dev, index++); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 90 | |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 91 | add_fixed_resources(dev, index); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 92 | } |
| 93 | |
Arthur Heymans | de6bda6 | 2018-04-10 13:40:39 +0200 | [diff] [blame] | 94 | void northbridge_write_smram(u8 smram) |
| 95 | { |
Kyösti Mälkki | c70eed1 | 2018-05-22 02:18:00 +0300 | [diff] [blame] | 96 | struct device *dev = pcidev_on_root(0, 0); |
Arthur Heymans | de6bda6 | 2018-04-10 13:40:39 +0200 | [diff] [blame] | 97 | |
Elyes Haouas | 5e6b0f0 | 2022-09-13 09:55:49 +0200 | [diff] [blame] | 98 | if (!dev) |
Arthur Heymans | de6bda6 | 2018-04-10 13:40:39 +0200 | [diff] [blame] | 99 | die("could not find pci 00:00.0!\n"); |
| 100 | |
| 101 | pci_write_config8(dev, SMRAM, smram); |
| 102 | } |
| 103 | |
Elyes HAOUAS | 6275360 | 2018-02-09 08:46:25 +0100 | [diff] [blame] | 104 | static void mch_domain_set_resources(struct device *dev) |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 105 | { |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 106 | struct resource *res; |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 107 | |
Damien Zammit | 51fdb92 | 2016-01-18 18:34:52 +1100 | [diff] [blame] | 108 | for (res = dev->resource_list; res; res = res->next) |
| 109 | report_resource_stored(dev, res, ""); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 110 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 111 | assign_resources(dev->downstream); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 112 | } |
| 113 | |
Elyes HAOUAS | 6275360 | 2018-02-09 08:46:25 +0100 | [diff] [blame] | 114 | static void mch_domain_init(struct device *dev) |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 115 | { |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 116 | /* Enable SERR */ |
Elyes HAOUAS | 5ac723e | 2020-04-29 09:09:12 +0200 | [diff] [blame] | 117 | pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_SERR); |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 118 | } |
| 119 | |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 120 | static const char *northbridge_acpi_name(const struct device *dev) |
| 121 | { |
| 122 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 123 | return "PCI0"; |
| 124 | |
Fabio Aiuto | 61ed4ef | 2022-09-30 14:55:53 +0200 | [diff] [blame] | 125 | if (!is_pci_dev_on_bus(dev, 0)) |
Arthur Heymans | a8a9f34 | 2017-12-24 08:11:13 +0100 | [diff] [blame] | 126 | return NULL; |
| 127 | |
| 128 | switch (dev->path.pci.devfn) { |
| 129 | case PCI_DEVFN(0, 0): |
| 130 | return "MCHC"; |
| 131 | } |
| 132 | |
| 133 | return NULL; |
| 134 | } |
| 135 | |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 136 | static struct device_operations pci_domain_ops = { |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 137 | .read_resources = mch_domain_read_resources, |
| 138 | .set_resources = mch_domain_set_resources, |
| 139 | .init = mch_domain_init, |
Arthur Heymans | 0b0113f | 2023-08-31 17:09:28 +0200 | [diff] [blame] | 140 | .scan_bus = pci_host_bridge_scan_bus, |
Nico Huber | 68680dd | 2020-03-31 17:34:52 +0200 | [diff] [blame] | 141 | .acpi_fill_ssdt = generate_cpu_entries, |
| 142 | .acpi_name = northbridge_acpi_name, |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 143 | }; |
| 144 | |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 145 | static struct device_operations cpu_bus_ops = { |
Nico Huber | 2f8ba69 | 2020-04-05 14:05:24 +0200 | [diff] [blame] | 146 | .read_resources = noop_read_resources, |
| 147 | .set_resources = noop_set_resources, |
Kyösti Mälkki | b3267e0 | 2019-08-13 16:44:04 +0300 | [diff] [blame] | 148 | .init = mp_cpu_bus_init, |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 149 | }; |
| 150 | |
Elyes HAOUAS | 6275360 | 2018-02-09 08:46:25 +0100 | [diff] [blame] | 151 | static void enable_dev(struct device *dev) |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 152 | { |
| 153 | /* Set the operations if it is a special bus type */ |
| 154 | if (dev->path.type == DEVICE_PATH_DOMAIN) { |
| 155 | dev->ops = &pci_domain_ops; |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 156 | } else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { |
| 157 | dev->ops = &cpu_bus_ops; |
| 158 | } |
| 159 | } |
| 160 | |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 161 | struct chip_operations northbridge_intel_pineview_ops = { |
Nicholas Sudsgaard | bfb11be | 2024-01-30 09:53:46 +0900 | [diff] [blame] | 162 | .name = "Intel Pineview Northbridge", |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 163 | .enable_dev = enable_dev, |
Damien Zammit | f7060f1 | 2015-11-14 00:59:21 +1100 | [diff] [blame] | 164 | }; |