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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Intel Corp.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
/*
* The sole purpose of this driver is to avoid BAR to be changed during
* resource allocation. Since configuration space is just 32 bytes it
* shouldn't cause any fragmentation.
*/
#include <console/uart.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <soc/pci_ids.h>
#include <soc/pci_devs.h>
static void aplk_uart_read_resources(struct device *dev)
{
pci_dev_read_resources(dev);
if ((IS_ENABLED(CONFIG_SOC_UART_DEBUG) &&
dev->path.pci.devfn == _LPSS_PCI_DEVFN(UART,
CONFIG_UART_FOR_CONSOLE))) {
/* will override existing resource. */
fixed_mem_resource(dev, PCI_BASE_ADDRESS_0,
CONFIG_CONSOLE_UART_BASE_ADDRESS >> 10, 4, 0);
}
}
static struct device_operations uart_ops = {
.read_resources = aplk_uart_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = pci_dev_init,
.enable = DEVICE_NOOP
};
static const unsigned short uart_ids[] = {
PCI_DEVICE_ID_APOLLOLAKE_UART0, PCI_DEVICE_ID_APOLLOLAKE_UART1,
PCI_DEVICE_ID_APOLLOLAKE_UART2, PCI_DEVICE_ID_APOLLOLAKE_UART3,
0
};
static const struct pci_driver uart_driver __pci_driver = {
.ops = &uart_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = uart_ids
};
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