google/smaug: add new mainboard

This is an nvidia t210 based board.
This includes Chrome OS downstream up to Change-Id: Ic89ed54c.

Change-Id: I4d77659f4f2d21b1bbdcfc3467e1a166c02ddd47
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10635
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/src/mainboard/google/smaug/bootblock.c b/src/mainboard/google/smaug/bootblock.c
new file mode 100644
index 0000000000..ee535c25b8
--- /dev/null
+++ b/src/mainboard/google/smaug/bootblock.c
@@ -0,0 +1,130 @@
+/*
+ * 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);
+}