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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Google Inc.
* Copyright (C) 2015-2018 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.
*/
#include <console/console.h>
#include <device/pci_def.h>
#include <gpio.h>
#include <intelblocks/lpss.h>
#include <intelblocks/pcr.h>
#include <intelblocks/uart.h>
#include <soc/bootblock.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
/* UART pad configuration. Support RXD and TXD for now. */
const struct uart_gpio_pad_config uart_gpio_pads[] = {
{
.console_index = 0,
.gpios = {
PAD_CFG_NF(GPP_C8, NONE, DEEP, NF1), /* UART0 RX */
PAD_CFG_NF(GPP_C9, NONE, DEEP, NF1), /* UART0 TX */
},
},
{
.console_index = 1,
.gpios = {
PAD_CFG_NF(GPP_C12, NONE, DEEP, NF1), /* UART1 RX */
PAD_CFG_NF(GPP_C13, NONE, DEEP, NF1), /* UART1 TX */
},
},
{
.console_index = 2,
.gpios = {
PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* UART2 RX */
PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), /* UART2 TX */
},
}
};
const int uart_max_index = ARRAY_SIZE(uart_gpio_pads);
DEVTREE_CONST struct device *soc_uart_console_to_device(int uart_console)
{
/*
* if index is valid, this function will return corresponding structure
* for uart console else will return NULL.
*/
switch (uart_console) {
case 0:
return pcidev_path_on_root(PCH_DEVFN_UART0);
case 1:
return pcidev_path_on_root(PCH_DEVFN_UART1);
case 2:
return pcidev_path_on_root(PCH_DEVFN_UART2);
default:
printk(BIOS_ERR, "Invalid UART console index\n");
return NULL;
}
}
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