| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <acpi/acpi.h> |
| #include <console/console.h> |
| #include <device/pci_ops.h> |
| #include <stdint.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <cpu/cpu.h> |
| |
| #include "e7505.h" |
| |
| unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| /* Just a dummy */ |
| return current; |
| } |
| |
| static void mch_domain_read_resources(struct device *dev) |
| { |
| int idx; |
| unsigned long tomk, tolmk; |
| unsigned long remapbasek, remaplimitk; |
| const unsigned long basek_4G = 4 * (GiB / KiB); |
| struct device *mc_dev; |
| |
| pci_domain_read_resources(dev); |
| |
| mc_dev = pcidev_on_root(0, 0); |
| if (!mc_dev) |
| die("Could not find MCH device\n"); |
| |
| tolmk = pci_read_config16(mc_dev, TOLM) >> 11; |
| tolmk <<= 17; |
| |
| tomk = pci_read_config8(mc_dev, DRB_ROW_7); |
| tomk <<= 16; |
| |
| /* Remapped region with a 64 MiB granularity in register |
| definition. Limit is inclusive, so add one. */ |
| remapbasek = pci_read_config16(mc_dev, REMAPBASE) & 0x3ff; |
| remapbasek <<= 16; |
| |
| remaplimitk = pci_read_config16(mc_dev, REMAPLIMIT) & 0x3ff; |
| remaplimitk += 1; |
| remaplimitk <<= 16; |
| |
| /* Report the memory regions */ |
| idx = 10; |
| ram_resource(dev, idx++, 0, 640); |
| ram_resource(dev, idx++, 768, tolmk - 768); |
| |
| if (tomk > basek_4G) |
| ram_resource(dev, idx++, basek_4G, tomk - basek_4G); |
| |
| if (remaplimitk > remapbasek) |
| ram_resource(dev, idx++, remapbasek, remaplimitk - remapbasek); |
| } |
| |
| static void mch_domain_set_resources(struct device *dev) |
| { |
| assign_resources(dev->link_list); |
| } |
| |
| static struct pci_operations intel_pci_ops = { |
| .set_subsystem = pci_dev_set_subsystem, |
| }; |
| |
| static struct device_operations pci_domain_ops = { |
| .read_resources = mch_domain_read_resources, |
| .set_resources = mch_domain_set_resources, |
| .scan_bus = pci_domain_scan_bus, |
| .ops_pci = &intel_pci_ops, |
| }; |
| |
| static void cpu_bus_init(struct device *dev) |
| { |
| initialize_cpus(dev->link_list); |
| } |
| |
| static struct device_operations cpu_bus_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .init = cpu_bus_init, |
| }; |
| |
| static void enable_dev(struct device *dev) |
| { |
| /* Set the operations if it is a special bus type */ |
| if (dev->path.type == DEVICE_PATH_DOMAIN) { |
| dev->ops = &pci_domain_ops; |
| } |
| else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { |
| dev->ops = &cpu_bus_ops; |
| } |
| } |
| |
| struct chip_operations northbridge_intel_e7505_ops = { |
| CHIP_NAME("Intel E7505 Northbridge") |
| .enable_dev = enable_dev, |
| }; |