2016-03-09 01:12:06 +01:00
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2015 Intel Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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2016-04-10 19:09:16 +02:00
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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2016-03-09 01:12:06 +01:00
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*/
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/*
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* The sole purpose of this driver is to avoid BAR to be changed during
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* resource allocation. Since configuration space is just 32 bytes it
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* shouldn't cause any fragmentation.
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*/
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2017-08-05 20:12:44 +02:00
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#include <cbmem.h>
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2016-03-09 01:12:06 +01:00
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#include <device/device.h>
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#include <device/pci.h>
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2017-04-26 16:02:11 +02:00
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#include <intelblocks/uart.h>
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2017-08-05 20:12:44 +02:00
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#include <soc/nvs.h>
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2016-03-09 01:12:06 +01:00
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#include <soc/pci_devs.h>
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2017-08-05 20:12:44 +02:00
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#if !ENV_SMM
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2017-04-26 16:02:11 +02:00
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void pch_uart_read_resources(struct device *dev)
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2016-03-09 01:12:06 +01:00
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{
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pci_dev_read_resources(dev);
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2017-08-05 20:12:44 +02:00
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if (IS_ENABLED(CONFIG_SOC_UART_DEBUG) &&
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uart_is_debug_controller(dev)) {
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2016-03-09 01:12:06 +01:00
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/* will override existing resource. */
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fixed_mem_resource(dev, PCI_BASE_ADDRESS_0,
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CONFIG_CONSOLE_UART_BASE_ADDRESS >> 10, 4, 0);
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}
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}
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2017-08-05 20:12:44 +02:00
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#endif
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bool pch_uart_init_debug_controller_on_resume(void)
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{
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global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
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if (gnvs)
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return !!gnvs->uior;
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return false;
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}
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device_t pch_uart_get_debug_controller(void)
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{
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return _PCH_DEV(UART, CONFIG_UART_FOR_CONSOLE);
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}
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