google/chell: perform early init for CAR *stage

In order to support both separate verstage and a verified boot after
romstage one needs to ensure the proper GPIO and EC configuration
been complete. Therefore, move that logic to
car_mainboard_post_console_init() in car.c file which gets called
in the early flow of a CAR stage (either verstage or romstage).

BUG=chrome-os-partner:44827
BRANCH=glados
TEST=Built chell w/ separate verstage and booted.

Change-Id: Ic728c2904006376fdc2b27b512f72173a2260be3
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 42d190af8996fea894305ebe686afbfda5f2b8a5
Original-Change-Id: I95aeb97737d0ddfa6c53269c9d14db16ed5e47cc
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/324072
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/13582
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/chell/Makefile.inc

@@ -16,6 +16,7 @@
 subdirs-y += spd
 
 romstage-y += boardid.c
+romstage-y += car.c
 romstage-y += pei_data.c
 
 verstage-$(CONFIG_CHROMEOS) += chromeos.c
@@ -30,3 +31,5 @@ ramstage-y += pei_data.c
 ramstage-y += ramstage.c
 
 smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
+
+verstage-y += car.c

src/mainboard/google/chell/car.c

@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016 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 <ec/google/chromeec/ec.h>
+#include <fsp/car.h>
+#include <soc/gpio.h>
+#include "gpio.h"
+
+static void early_config_gpio(void)
+{
+	/* This is a hack for FSP because it does things in MemoryInit()
+	 * which it shouldn't be. We have to prepare certain gpios here
+	 * because of the brokenness in FSP. */
+	gpio_configure_pads(early_gpio_table, ARRAY_SIZE(early_gpio_table));
+}
+
+void car_mainboard_post_console_init(void)
+{
+	/* Ensure the EC and PD are in the right mode for recovery */
+	google_chromeec_early_init();
+
+	early_config_gpio();
+}

src/mainboard/google/chell/romstage.c

@@ -15,36 +15,19 @@
  * GNU General Public License for more details.
  */
 
-#include <cbfs.h>
-#include <console/console.h>
 #include <string.h>
 #include <ec/google/chromeec/ec.h>
-#include <soc/gpio.h>
 #include <soc/pei_data.h>
 #include <soc/pei_wrapper.h>
 #include <soc/romstage.h>
-#include "gpio.h"
 #include "spd/spd.h"
 
-static void early_config_gpio(void)
-{
-	/* This is a hack for FSP because it does things in MemoryInit()
-	 * which it shouldn't be. We have to prepare certain gpios here
-	 * because of the brokenness in FSP. */
-	gpio_configure_pads(early_gpio_table, ARRAY_SIZE(early_gpio_table));
-}
-
 void mainboard_romstage_entry(struct romstage_params *params)
 {
-	/* Ensure the EC and PD are in the right mode for recovery */
-	google_chromeec_early_init();
-
 	/* Turn on keyboard backlight to indicate we are booting */
 	if (params->power_state->prev_sleep_state != SLEEP_STATE_S3)
 		google_chromeec_kbbacklight(25);
 
-	early_config_gpio();
-
 	/* Fill out PEI DATA */
 	mainboard_fill_pei_data(params->pei_data);
 	mainboard_fill_spd_data(params->pei_data);