| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <arch/ioapic.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <cpu/x86/lapic.h> |
| #include <device/pci.h> |
| #include <fsp/api.h> |
| #include <soc/cpu.h> |
| #include <soc/ramstage.h> |
| #include <soc/pm.h> |
| |
| /* C620 IOAPIC has 120 redirection entries */ |
| #define C620_IOAPIC_REDIR_ENTRIES 120 |
| |
| static void pci_domain_set_resources(struct device *dev) |
| { |
| assign_resources(dev->link_list); |
| } |
| |
| void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd) |
| { |
| /* not implemented yet */ |
| } |
| |
| static struct device_operations pci_domain_ops = { |
| .read_resources = &pci_domain_read_resources, |
| .set_resources = &pci_domain_set_resources, |
| .scan_bus = &pci_domain_scan_bus, |
| }; |
| |
| static struct device_operations cpu_bus_ops = { |
| .read_resources = DEVICE_NOOP, |
| .set_resources = DEVICE_NOOP, |
| .enable_resources = DEVICE_NOOP, |
| .init = cpx_init_cpus, |
| .scan_bus = NULL, |
| }; |
| |
| static void chip_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; |
| } |
| } |
| |
| static void pch_enable_ioapic(const struct device *dev) |
| { |
| uint32_t reg32; |
| |
| set_ioapic_id((void *)IO_APIC_ADDR, 2); |
| |
| /* affirm full set of redirection table entries ("write once") */ |
| reg32 = io_apic_read((void *)IO_APIC_ADDR, 1); |
| |
| reg32 &= ~0x00ff0000; |
| reg32 |= (C620_IOAPIC_REDIR_ENTRIES - 1) << 16; |
| |
| io_apic_write((void *)IO_APIC_ADDR, 1, reg32); |
| |
| /* |
| * Select Boot Configuration register (0x03) and |
| * use Processor System Bus (0x01) to deliver interrupts. |
| */ |
| io_apic_write((void *)IO_APIC_ADDR, 3, 1); |
| } |
| |
| struct pci_operations soc_pci_ops = { |
| .set_subsystem = pci_dev_set_subsystem, |
| }; |
| |
| static void chip_final(void *data) |
| { |
| /* nothing implemented yet */ |
| } |
| |
| static void chip_init(void *data) |
| { |
| printk(BIOS_DEBUG, "coreboot: calling fsp_silicon_init\n"); |
| fsp_silicon_init(false); |
| pch_enable_ioapic(NULL); |
| setup_lapic(); |
| } |
| |
| struct chip_operations soc_intel_xeon_sp_cpx_ops = { |
| CHIP_NAME("Intel Cooperlake-SP") |
| .enable_dev = chip_enable_dev, |
| .init = chip_init, |
| .final = chip_final |
| }; |