zephyr: Initial image for npcx_evb/npcx7

Initial image for npcx_evb/npcx7 supporting basic UART functionality
and basic commands.

BUG=none
BRANCH=none
TEST=test basic console functionality on npcx7_evb

Signed-off-by: Wealian Liao <whliao@nuvoton.corp-partner.google.com>
Change-Id: Ibdf1ce98b6ad747dc649b82f12e555e63569036a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3033230
Reviewed-by: Yuval Peress <peress@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>
Commit-Queue: Keith Short <keithshort@chromium.org>

5 files changed, 91 insertions, 0 deletions

diff --git a/zephyr/boards/arm/npcx_evb/Kconfig.board b/zephyr/boards/arm/npcx_evb/Kconfig.board
new file mode 100644
index 0000000000..d7cdd067da
--- /dev/null
+++ b/zephyr/boards/arm/npcx_evb/Kconfig.board
@@ -0,0 +1,12 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Note: this Zephyr board more closely represents the Chrome OS
+# concept of a baseboard.  Zephyr boards and Chrome OS boards do not
+# have a 1:1 mapping.
+config BOARD_NPCX7_EVB
+	bool "NPCX7 Evaluation Board"
+	depends on SOC_NPCX7M6FB || SOC_NPCX7M6FC || SOC_NPCX7M7FC
+	# Allow generating initial 0 line coverage.
+	select HAS_COVERAGE_SUPPORT
diff --git a/zephyr/boards/arm/npcx_evb/Kconfig.defconfig b/zephyr/boards/arm/npcx_evb/Kconfig.defconfig
new file mode 100644
index 0000000000..81268a4636
--- /dev/null
+++ b/zephyr/boards/arm/npcx_evb/Kconfig.defconfig
@@ -0,0 +1,6 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+config BOARD
+	default "npcx7_evb" if BOARD_NPCX7_EVB
diff --git a/zephyr/boards/arm/npcx_evb/npcx7_evb.dts b/zephyr/boards/arm/npcx_evb/npcx7_evb.dts
new file mode 100644
index 0000000000..c20589d637
--- /dev/null
+++ b/zephyr/boards/arm/npcx_evb/npcx7_evb.dts
@@ -0,0 +1,22 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/dts-v1/;
+
+#include <cros/nuvoton/npcx7.dtsi>
+
+/*
+ * #include <nuvoton/npcx7m6fb.dtsi>
+ * #include <nuvoton/npcx7m6fc.dtsi>
+ * #include <nuvoton/npcx7m7fc.dtsi>
+ */
+#include <nuvoton/npcx7m6fc.dtsi>
+#include "npcx_evb.dtsi"
+
+&uart1 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&altc_uart1_sl2>; /* Use UART1_SL2 ie. PIN64.65 */
+};
diff --git a/zephyr/boards/arm/npcx_evb/npcx7_evb_defconfig b/zephyr/boards/arm/npcx_evb/npcx7_evb_defconfig
new file mode 100644
index 0000000000..7491ae09df
--- /dev/null
+++ b/zephyr/boards/arm/npcx_evb/npcx7_evb_defconfig
@@ -0,0 +1,34 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Zephyr Kernel Configuration
+CONFIG_SOC_SERIES_NPCX7=y
+# NPCX7 soc list
+#  CONFIG_SOC_NPCX7M6FB
+#  CONFIG_SOC_NPCX7M6FC
+#  CONFIG_SOC_NPCX7M7FC
+CONFIG_SOC_NPCX7M6FC=y
+
+# Platform Configuration
+CONFIG_BOARD_NPCX7_EVB=y
+
+# Serial Drivers
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Pinmux Driver
+CONFIG_PINMUX=y
+
+# GPIO Controller
+CONFIG_GPIO=y
+
+# Clock configuration
+CONFIG_CLOCK_CONTROL=y
+
+# WATCHDOG configuration
+CONFIG_WATCHDOG=y
diff --git a/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi b/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi
new file mode 100644
index 0000000000..65c1ab7e68
--- /dev/null
+++ b/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi
@@ -0,0 +1,17 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <dt-bindings/gpio_defines.h>
+
+/ {
+	model = "Nuvoton NPCX Evaluation Board";
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,console = &uart1;
+		zephyr,shell-uart = &uart1;
+		zephyr,flash = &flash0;
+	};
+};