google/foster: add new mainboard

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

Change-Id: I8630e86a4b0e8756693f8989ce147d6d762cefe1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10634
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/foster/chromeos.c

@@ -0,0 +1,102 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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 <boot/coreboot_tables.h>
+#include <console/console.h>
+#include <ec/google/chromeec/ec.h>
+#include <ec/google/chromeec/ec_commands.h>
+#include <gpio.h>
+#include <string.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+void fill_lb_gpios(struct lb_gpios *gpios)
+{
+	int count = 0;
+
+	/* TBD(twarren@nvidia.com): Any analogs for these on Foster-FFD? */
+
+	/* Write Protect: active low */
+	gpios->gpios[count].port = -1;
+	gpios->gpios[count].polarity = ACTIVE_LOW;
+	gpios->gpios[count].value = get_write_protect_state();
+	strncpy((char *)gpios->gpios[count].name, "write protect",
+		GPIO_MAX_NAME_LENGTH);
+	count++;
+
+	/* Recovery: active high */
+	gpios->gpios[count].port = -1;
+	gpios->gpios[count].polarity = ACTIVE_HIGH;
+	gpios->gpios[count].value = get_recovery_mode_switch();
+	strncpy((char *)gpios->gpios[count].name, "recovery",
+		GPIO_MAX_NAME_LENGTH);
+	count++;
+
+	/* TODO: Power: active low / high depending on board id */
+	gpios->gpios[count].port = GPIO(X5);
+	gpios->gpios[count].polarity = ACTIVE_LOW;
+	gpios->gpios[count].value = -1;
+	strncpy((char *)gpios->gpios[count].name, "power",
+		GPIO_MAX_NAME_LENGTH);
+	count++;
+
+	/* Developer: virtual GPIO active high */
+	gpios->gpios[count].port = -1;
+	gpios->gpios[count].polarity = ACTIVE_HIGH;
+	gpios->gpios[count].value = get_developer_mode_switch();
+	strncpy((char *)gpios->gpios[count].name, "developer",
+		GPIO_MAX_NAME_LENGTH);
+	count++;
+
+	/* TODO: Reset: active low (output) */
+	gpios->gpios[count].port = GPIO(I5);
+	gpios->gpios[count].polarity = ACTIVE_LOW;
+	gpios->gpios[count].value = -1;
+	strncpy((char *)gpios->gpios[count].name, "reset",
+		GPIO_MAX_NAME_LENGTH);
+	count++;
+
+	gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
+	gpios->count = count;
+
+	printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
+}
+
+int get_developer_mode_switch(void)
+{
+	return 0;
+}
+
+int get_recovery_mode_switch(void)
+{
+#if CONFIG_EC_GOOGLE_CHROMEEC
+	uint32_t ec_events;
+
+	ec_events = google_chromeec_get_events_b();
+	return !!(ec_events &
+		  EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
+#else
+	return 0;
+#endif
+}
+
+int get_write_protect_state(void)
+{
+	return 0;
+}