/* * 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. */ #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 | PINMUX_DRIVE_2X, QSPI), PAD_CFG_SFIO(QSPI_IO1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP | PINMUX_DRIVE_2X, QSPI), PAD_CFG_SFIO(QSPI_SCK, PINMUX_INPUT_ENABLE | PINMUX_DRIVE_2X, QSPI), PAD_CFG_SFIO(QSPI_CS_N, PINMUX_INPUT_ENABLE | PINMUX_DRIVE_2X, QSPI), PAD_CFG_SFIO(QSPI_IO2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP | PINMUX_DRIVE_2X, QSPI), PAD_CFG_SFIO(QSPI_IO3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP | PINMUX_DRIVE_2X, 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); }