mb/google/hatch: Create nightfury variant

Create new variant and build for nightfury.

BUG=b:149226871
TEST=FW_NAME="nightfury" emerge-hatch coreboot chromeos-bootimage

Change-Id: If08692f4a2d216c57499098cc0e35abd708d99d4
Signed-off-by: Raymond Chung <raymondchung@ami.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38826
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/mainboard/google/hatch/variants/nightfury/ramstage.c b/src/mainboard/google/hatch/variants/nightfury/ramstage.c
new file mode 100644
index 000000000000..44cd89b00e02
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/nightfury/ramstage.c
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 Google LLC
+ *
+ * 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 <delay.h>
+#include <gpio.h>
+#include <baseboard/variants.h>
+#include <soc/gpio.h>
+
+void variant_ramstage_init(void)
+{
+	/*
+	 * Enable power to FPMCU, wait for power rail to stabilize,
+	 * and then deassert FPMCU reset.
+	 * Waiting for the power rail to stabilize can take a while,
+	 * a minimum of 400us on Nightfury.
+	 */
+}