1 files changed, 129 insertions, 0 deletions
diff --git a/src/mainboard/google/foster/mainboard.c b/src/mainboard/google/foster/mainboard.c
new file mode 100644
index 000000000000..3f4e10fc6540
--- /dev/null
+++ b/src/mainboard/google/foster/mainboard.c
@@ -0,0 +1,129 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 <arch/mmu.h>
+#include <boot/coreboot_tables.h>
+#include <delay.h>
+#include <device/device.h>
+#include <memrange.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/spi.h>
+#include <soc/nvidia/tegra/dc.h>
+#include <soc/display.h>
+
+#include <vendorcode/google/chromeos/chromeos.h>
+
+static const struct pad_config sdmmc1_pad[] = {
+	/* MMC1(SDCARD) */
+	PAD_CFG_SFIO(SDMMC1_CLK, PINMUX_INPUT_ENABLE, SDMMC1),
+	PAD_CFG_SFIO(SDMMC1_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+	PAD_CFG_SFIO(SDMMC1_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+	PAD_CFG_SFIO(SDMMC1_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+	PAD_CFG_SFIO(SDMMC1_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+	PAD_CFG_SFIO(SDMMC1_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1),
+	/* MMC1 Card Detect pin */
+	PAD_CFG_GPIO_INPUT(GPIO_PZ1, PINMUX_PULL_UP),
+	/* Disable SD card reader power so it can be reset even on warm boot.
+	   Payloads must enable power before accessing SD card slots. */
+	PAD_CFG_GPIO_OUT0(GPIO_PZ4, PINMUX_PULL_NONE),
+};
+
+static const struct pad_config audio_codec_pads[] = {
+	/* GPIO_X1_AUD(BB3) is AUDIO_LDO_EN (->CODEC RESET_N pin) */
+	PAD_CFG_GPIO_OUT1(GPIO_X1_AUD, PINMUX_PULL_DOWN),
+};
+
+static const struct pad_config padcfgs[] = {
+	/* We pull the USB VBUS signals up but keep them as inputs since the
+	 * voltage source likes to drive them low on overcurrent conditions */
+	PAD_CFG_GPIO_INPUT(USB_VBUS_EN1, PINMUX_PULL_NONE | PINMUX_PARKED |
+			   PINMUX_INPUT_ENABLE | PINMUX_LPDR | PINMUX_IO_HV),
+
+	/* Add backlight vdd/enable/pwm/dp hpd pad cfgs here */
+};
+
+static const struct pad_config i2c1_pad[] = {
+	/* GEN1 I2C */
+	PAD_CFG_SFIO(GEN1_I2C_SCL, PINMUX_INPUT_ENABLE, I2C1),
+	PAD_CFG_SFIO(GEN1_I2C_SDA, PINMUX_INPUT_ENABLE, I2C1),
+};
+
+static const struct pad_config i2s1_pad[] = {
+	/* I2S1 */
+	PAD_CFG_SFIO(DAP1_SCLK, PINMUX_INPUT_ENABLE, I2S1),
+	PAD_CFG_SFIO(DAP1_FS, PINMUX_INPUT_ENABLE, I2S1),
+	PAD_CFG_SFIO(DAP1_DOUT, PINMUX_INPUT_ENABLE, I2S1),
+	PAD_CFG_SFIO(DAP1_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1),
+	/* codec MCLK via AUD SFIO */
+	PAD_CFG_SFIO(AUD_MCLK, PINMUX_PULL_NONE, AUD),
+};
+
+static const struct funit_cfg audio_funit[] = {
+	/* We need 1.5MHz for I2S1. So we use CLK_M */
+	FUNIT_CFG(I2S1, CLK_M, 1500, i2s1_pad, ARRAY_SIZE(i2s1_pad)),
+};
+
+static const struct funit_cfg funitcfgs[] = {
+	FUNIT_CFG(SDMMC1, PLLP, 48000, sdmmc1_pad, ARRAY_SIZE(sdmmc1_pad)),
+	FUNIT_CFG(SDMMC4, PLLP, 48000, NULL, 0),
+	FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)),
+	FUNIT_CFG_USB(USBD),
+};
+
+/* Audio init: clocks and enables/resets */
+static void setup_audio(void)
+{
+	/* Audio codec (ES755) uses OSC freq (via AUD_MCLK), s/b 38.4MHz */
+	soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit));
+
+	/*
+	 * As per NVIDIA hardware team, we need to take ALL audio devices
+	 * connected to AHUB (AUDIO, APB2APE, I2S, SPDIF, etc.) out of reset
+	 * and clock-enabled, otherwise reading AHUB devices (in our case,
+	 * I2S/APBIF/AUDIO<XBAR>) will hang.
+	 */
+	soc_configure_ape();
+	clock_enable_audio();
+}
+
+static void mainboard_init(device_t dev)
+{
+	soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
+	soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs));
+
+	i2c_init(I2C1_BUS);
+	setup_audio();
+}
+
+static void mainboard_enable(device_t dev)
+{
+	dev->ops->init = &mainboard_init;
+}
+
+struct chip_operations mainboard_ops = {
+	.name   = "foster",
+	.enable_dev = mainboard_enable,
+};