Mistral: Enable USB in romstage

Enable USB support for mistral in romstage.

TEST=build & run

Change-Id: I5c2bbe16aa3601e014a2b77d192565402ed23794
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32063
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/google/mistral/Makefile.inc

@@ -11,6 +11,7 @@ verstage-y += reset.c
 romstage-y += memlayout.ld
 romstage-y += chromeos.c
 romstage-y += reset.c
+romstage-y += romstage.c
 
 ramstage-y += memlayout.ld
 ramstage-y += chromeos.c

src/mainboard/google/mistral/mainboard.c

@@ -17,6 +17,20 @@
 #include <bootblock_common.h>
 #include <timestamp.h>
 #include <vendorcode/google/chromeos/chromeos.h>
+#include <soc/usb.h>
+
+static struct usb_board_data usb1_board_data = {
+	.parameter_override_x0 = 0x63,
+	.parameter_override_x1 = 0x03,
+	.parameter_override_x0 = 0x1d,
+	.parameter_override_x1 = 0x03,
+};
+
+static void setup_usb(void)
+{
+	/* Setting Secondary usb controller */
+	setup_usb_host(HSUSB_HS_PORT_1, &usb1_board_data);
+}
 
 static void mainboard_init(struct device *dev)
 {
@@ -24,6 +38,8 @@ static void mainboard_init(struct device *dev)
 		/* Copy WIFI calibration data into CBMEM. */
 		cbmem_add_vpd_calibration_data();
 	}
+
+	setup_usb();
 }
 
 static void mainboard_enable(struct device *dev)

src/mainboard/google/mistral/romstage.c

@@ -0,0 +1,31 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018, The Linux Foundation.  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 version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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/stages.h>
+#include <soc/usb.h>
+
+static void prepare_usb(void)
+{
+	/*
+	 * Do DWC3 core and phy reset. Kick these resets off early
+	 * so they get atleast 1msec to settle.
+	 */
+	reset_usb(HSUSB_HS_PORT_1);
+}
+
+void platform_romstage_main(void)
+{
+	prepare_usb();
+}