| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * Copyright (C) 2015 Damien Zammit <damien@zamaudio.com> |
| * |
| * 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 <arch/acpigen.h> |
| #include <arch/acpi.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <northbridge/intel/pineview/pineview.h> |
| #include <types.h> |
| |
| unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| device_t dev; |
| u32 pciexbar = 0; |
| u32 pciexbar_reg; |
| u32 reg32; |
| int max_buses; |
| const struct { |
| u16 num_buses; |
| u32 addr_mask; |
| } busmask[] = { |
| {256, 0xff000000}, |
| {128, 0xf8000000}, |
| {64, 0xfc000000}, |
| {0, 0}, |
| }; |
| |
| dev = dev_find_slot(0, PCI_DEVFN(0,0)); |
| if (!dev) |
| return current; |
| |
| pciexbar_reg = pci_read_config32(dev, PCIEXBAR); |
| |
| // MMCFG not supported or not enabled. |
| if (!(pciexbar_reg & (1 << 0))) { |
| printk(BIOS_WARNING, "WARNING: MMCONF not set\n"); |
| return current; |
| } |
| |
| reg32 = (pciexbar_reg >> 1) & 3; |
| pciexbar = pciexbar_reg & busmask[reg32].addr_mask; |
| max_buses = busmask[reg32].num_buses; |
| |
| if (!pciexbar) { |
| printk(BIOS_WARNING, "WARNING: pciexbar invalid\n"); |
| return current; |
| } |
| |
| current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, |
| pciexbar, 0x0, 0x0, max_buses - 1); |
| |
| return current; |
| } |