| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * Copyright (C) 2012 The Chromium OS Authors |
| * Copyright (C) 2013 Sage Electronic Engineering, LLC |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; version 2 of |
| * the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <types.h> |
| #include <string.h> |
| #include <arch/acpi.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <arch/acpigen.h> |
| #include "northbridge.h" |
| |
| unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| struct device *dev; |
| u32 pciexbar = 0; |
| u32 pciexbar_reg; |
| int max_buses; |
| int pci_dev_id; |
| |
| for (pci_dev_id = PCI_DEVICE_ID_RG_MIN; pci_dev_id <= PCI_DEVICE_ID_RG_MAX; pci_dev_id++) { |
| dev = dev_find_device(PCI_VENDOR_ID_INTEL, pci_dev_id, 0); |
| if (dev) |
| break; |
| } |
| |
| if (!dev) |
| return current; |
| |
| pciexbar_reg = sideband_read(B_UNIT, BECREG); |
| |
| /* MMCFG not supported or not enabled. */ |
| if (!(pciexbar_reg & (1 << 0))) |
| return current; |
| |
| /* 256MB ECAM range */ |
| pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); |
| max_buses = 256; |
| |
| current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, |
| pciexbar, 0x0, 0x0, max_buses - 1); |
| |
| return current; |
| } |
| |
| void northbridge_acpi_fill_ssdt_generator(struct device *device) |
| { |
| u32 bmbound; |
| char pscope[] = "\\_SB.PCI0"; |
| |
| bmbound = sideband_read(B_UNIT, BMBOUND); |
| acpigen_write_scope(pscope); |
| acpigen_write_name_dword("BMBD", bmbound); |
| acpigen_pop_len(); |
| generate_cpu_entries(device); |
| } |