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/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google 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.
*
* 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 <arch/io.h>
#include <bootblock_common.h>
#include <console/console.h>
#include <device/i2c.h>
#include <soc/addressmap.h>
#include <soc/clk_rst.h>
#include <soc/clock.h>
#include <soc/funitcfg.h>
#include <soc/nvidia/tegra/i2c.h>
#include <soc/padconfig.h>
#include <soc/pmc.h>
#include <soc/power.h>
#include <soc/spi.h>
#include "pmic.h"
/********************** PMIC **********************************/
static const struct pad_config pmic_pads[] = {
PAD_CFG_SFIO(PWR_I2C_SCL, PINMUX_INPUT_ENABLE, I2CPMU),
PAD_CFG_SFIO(PWR_I2C_SDA, PINMUX_INPUT_ENABLE, I2CPMU),
};
/********************** SPI Flash *****************************/
static const struct pad_config spiflash_pads[] = {
/* QSPI fLash: mosi, miso, clk, cs0, hold, wp */
PAD_CFG_SFIO(QSPI_IO0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
PAD_CFG_SFIO(QSPI_IO1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
PAD_CFG_SFIO(QSPI_SCK, PINMUX_INPUT_ENABLE, QSPI),
PAD_CFG_SFIO(QSPI_CS_N, PINMUX_INPUT_ENABLE, QSPI),
PAD_CFG_SFIO(QSPI_IO2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
PAD_CFG_SFIO(QSPI_IO3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, QSPI),
};
/********************* TPM ************************************/
static const struct pad_config tpm_pads[] = {
PAD_CFG_SFIO(GEN3_I2C_SCL, PINMUX_INPUT_ENABLE, I2C3),
PAD_CFG_SFIO(GEN3_I2C_SDA, PINMUX_INPUT_ENABLE, I2C3),
};
/********************* EC *************************************/
static const struct pad_config ec_i2c_pads[] = {
PAD_CFG_SFIO(GEN2_I2C_SCL, PINMUX_INPUT_ENABLE, I2C2),
PAD_CFG_SFIO(GEN2_I2C_SDA, PINMUX_INPUT_ENABLE, I2C2),
};
/********************* Funits *********************************/
static const struct funit_cfg funits[] = {
/* PMIC on I2C5 (PWR_I2C* pads) at 400kHz. */
FUNIT_CFG(I2C5, PLLP, 400, pmic_pads, ARRAY_SIZE(pmic_pads)),
/* SPI flash at 24MHz on QSPI controller. */
FUNIT_CFG(QSPI, PLLP, 24000, spiflash_pads, ARRAY_SIZE(spiflash_pads)),
/* TPM on I2C3 @ 400kHz */
FUNIT_CFG(I2C3, PLLP, 400, tpm_pads, ARRAY_SIZE(tpm_pads)),
/* EC on I2C2 - pulled to 3.3V @ 100kHz */
FUNIT_CFG(I2C2, PLLP, 100, ec_i2c_pads, ARRAY_SIZE(ec_i2c_pads)),
};
/********************* UART ***********************************/
static const struct pad_config uart_console_pads[] = {
/* UARTA: tx, rx, rts, cts */
PAD_CFG_SFIO(UART1_TX, PINMUX_PULL_NONE, UARTA),
PAD_CFG_SFIO(UART1_RX, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UARTA),
PAD_CFG_SFIO(UART1_RTS, PINMUX_PULL_UP, UARTA),
PAD_CFG_SFIO(UART1_CTS, PINMUX_PULL_UP, UARTA),
};
void bootblock_mainboard_early_init(void)
{
soc_configure_pads(uart_console_pads, ARRAY_SIZE(uart_console_pads));
}
static void set_clock_sources(void)
{
/* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */
write32(CLK_RST_REG(clk_src_uarta), PLLP << CLK_SOURCE_SHIFT);
}
/********************* PADs ***********************************/
static const struct pad_config padcfgs[] = {
/* Board build id bits 1:0 */
PAD_CFG_GPIO_INPUT(GPIO_PK1, PINMUX_PULL_NONE),
PAD_CFG_GPIO_INPUT(GPIO_PK0, PINMUX_PULL_NONE),
};
void bootblock_mainboard_init(void)
{
set_clock_sources();
/* Set up the pads required to load romstage. */
soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
soc_configure_funits(funits, ARRAY_SIZE(funits));
/* PMIC */
i2c_init(I2CPWR_BUS);
pmic_init(I2CPWR_BUS);
/* TPM */
i2c_init(I2C3_BUS);
/* EC */
i2c_init(I2C2_BUS);
/*
* Set power detect override for GPIO, audio & sdmmc3 rails.
* GPIO rail override is required to put it into 1.8V mode.
*/
pmc_override_pwr_det(PMC_GPIO_RAIL_AO_MASK | PMC_AUDIO_RAIL_AO_MASK |
PMC_SDMMC3_RAIL_AO_MASK, PMC_GPIO_RAIL_AO_DISABLE |
PMC_AUDIO_RAIL_AO_DISABLE |
PMC_SDMMC3_RAIL_AO_DISABLE);
}
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