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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015-2016 Advanced Micro Devices, Inc.
*
* 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 <soc/southbridge.h>
#include <stdlib.h>
#include <soc/gpio.h>
#include "gpio.h"
/*
* As a rule of thumb, GPIO pins used by coreboot should be initialized at
* bootblock while GPIO pins used only by the OS should be initialized at
* ramstage.
*/
static const struct soc_amd_gpio gpio_set_stage_reset[] = {
/* NFC PU */
PAD_GPO(GPIO_64, HIGH),
/* PCIe presence detect */
PAD_GPI(GPIO_69, PULL_UP),
/* MUX for Power Express Eval */
PAD_GPI(GPIO_116, PULL_DOWN),
/* SD power */
PAD_GPO(GPIO_119, HIGH),
/* GPIO_136 - UART0_FCH_RX_DEBUG_RX */
PAD_NF(GPIO_136, UART0_RXD, PULL_NONE),
/* GPIO_137 - UART0_FCH_DEBUG_RTS */
PAD_NF(GPIO_137, UART0_RTS_L, PULL_NONE),
/* GPIO_138 - UART0_FCH_TX_DEBUG_RX */
PAD_NF(GPIO_138, UART0_TXD, PULL_NONE),
/* GPIO_142 - UART1_FCH_RTS */
PAD_NF(GPIO_142, UART1_RTS_L, PULL_NONE),
/* GPIO_143 - UART1_FCH_TX */
PAD_NF(GPIO_143, UART1_TXD, PULL_NONE),
};
static const struct soc_amd_gpio gpio_set_stage_ram[] = {
/* BT radio disable */
PAD_GPO(GPIO_14, HIGH),
/* NFC wake */
PAD_GPO(GPIO_65, HIGH),
/* Webcam */
PAD_GPO(GPIO_66, HIGH),
/* GPS sleep */
PAD_GPO(GPIO_70, HIGH),
};
const struct soc_amd_gpio *early_gpio_table(size_t *size)
{
*size = ARRAY_SIZE(gpio_set_stage_reset);
return gpio_set_stage_reset;
}
const struct soc_amd_gpio *gpio_table(size_t *size)
{
*size = ARRAY_SIZE(gpio_set_stage_ram);
return gpio_set_stage_ram;
}
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