/* * This file is part of the coreboot project. * * Copyright (C) 2015 Google Inc. * Copyright (C) 2015 Intel Corporation * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc. */ #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> #include <stdlib.h> #include <soc/iomap.h> #include <soc/pci_devs.h> #include <soc/ramstage.h> static int pch_uart_is_debug(struct device *dev) { return dev->path.pci.devfn == PCH_DEVFN_UART2; } static void pch_uart_read_resources(struct device *dev) { pci_dev_read_resources(dev); /* Set the configured UART base address for the debug port */ if (IS_ENABLED(CONFIG_UART_DEBUG) && pch_uart_is_debug(dev)) { struct resource *res = find_resource(dev, PCI_BASE_ADDRESS_0); /* Need to set the base and size for the resource allocator. */ res->base = UART_DEBUG_BASE_ADDRESS; res->size = UART_DEBUG_BASE_SIZE; res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } } static struct device_operations device_ops = { .read_resources = &pch_uart_read_resources, .set_resources = &pci_dev_set_resources, .enable_resources = &pci_dev_enable_resources, .ops_pci = &soc_pci_ops, }; static const unsigned short pci_device_ids[] = { 0x9d27, /* UART0 */ 0x9d28, /* UART1 */ 0x9d66, /* UART2 */ 0 }; static const struct pci_driver pch_uart __pci_driver = { .ops = &device_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = pci_device_ids, };