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/*
* 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 <console/uart.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <stdlib.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
static int pch_uart_is_debug(struct device *dev)
{
if (!IS_ENABLED(CONFIG_INTEL_PCH_UART_CONSOLE))
return 0;
switch (dev->path.pci.devfn) {
case PCH_DEVFN_UART0:
return CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 0;
case PCH_DEVFN_UART1:
return CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 1;
case PCH_DEVFN_UART2:
return CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 2;
}
return 0;
}
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 (pch_uart_is_debug(dev)) {
struct resource *res = find_resource(dev, PCI_BASE_ADDRESS_0);
res->size = 0x1000;
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,
};
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