Add menus to reset and powerdown the HPS CPU

Add a reset command to the u-boot menu.
Add a reboot and powerdown command to the Linux menu.

Signed-off-by: Rod Frazer <rod.frazer@intel.com>

Author: rodfrazer-intel

common_images/fit_no-pins-demos.its

@@ -536,6 +536,16 @@
 			};
 		};
 
+		script-reset {
+			description = "script-reset";
+			data = /incbin/("../../common_sw/u-boot_scripts/reset");
+			type = "script";
+			compression = "none";
+			hash {
+				algo = "crc32";
+			};
+		};
+
 		linux-kernel {
 			description = "linux-kernel";
 			data = /incbin/("../sw_builds/linux-socfpga/arch/arm64/boot/Image");

common_sw/linux_apps/boot_app.c

@@ -543,7 +543,36 @@ int main(void)
 			linux_j_menu_HELP_TEXT,
 			""
 		},
-		/* used menu letters: abcdefg_ijklmnopqrstuvwxyz57 */
+		{
+			/* menu selection letter */
+			"R",
+			/* display name */
+			"reboot HPS",
+			/* software name */
+			"",
+			/* script name */
+			"reboot",
+			/* hardware name */
+			"",
+			/* help text */
+			linux_R_menu_HELP_TEXT,
+			""
+		},
+		{
+			/* menu selection letter */
+			"P",
+			/* display name */
+			"poweroff HPS",
+			/* software name */
+			"",
+			/* script name */
+			"poweroff",
+			/* hardware name */
+			"",
+			/* help text */
+			linux_P_menu_HELP_TEXT,
+			""
+		},
 		{
 			NULL,
 			NULL,

common_sw/linux_apps/install_toybox_scripts.sh

@@ -62,6 +62,8 @@ SCRIPTS_SCRIPTS="
 ../../../common_sw/toybox_scripts/prog-a55-rpd
 ../../../common_sw/toybox_scripts/prog-a76-rpd
 ../../../common_sw/toybox_scripts/read_sensors
+../../../common_sw/toybox_scripts/reboot
+../../../common_sw/toybox_scripts/poweroff
 "
 
 for NEXT in ${SCRIPTS_SCRIPTS:?}

common_sw/linux_apps/linux_help_text.h

@@ -144,4 +144,13 @@
 //------------------------------------------------------------------------------
 #define linux_j_menu_HELP_TEXT j_menu_HELP_TEXT
 
+//------------------------------------------------------------------------------
+#define linux_R_menu_HELP_TEXT \
+"Execute the toybox reboot command, which will cold reset the HPS CPU."
+
+//------------------------------------------------------------------------------
+#define linux_P_menu_HELP_TEXT \
+"Execute the toybox poweroff command, which will shutdown and halt the\n\
+HPS CPU."
+
 #endif  /* __LINUX_HELP_TEXT_H__ */

common_sw/toybox_scripts/poweroff

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# SPDX-FileCopyrightText: Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: MIT-0
+#
+echo
+echo
+echo Powering off HPS CPU...
+echo
+
+poweroff

common_sw/toybox_scripts/reboot

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# SPDX-FileCopyrightText: Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: MIT-0
+#
+echo
+echo
+echo Rebooting HPS CPU...
+echo
+
+reboot

common_sw/u-boot_scripts/reset

@@ -0,0 +1,10 @@
+#
+# SPDX-FileCopyrightText: Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: MIT-0
+#
+echo
+echo
+echo Resetting HPS CPU...
+echo
+
+reset

common_sw/u-boot_standalone_apps/boot_app.c

@@ -553,7 +553,20 @@ int boot_app(int argc, char *const argv[])
 			/* help text */
 			d_menu_HELP_TEXT
 		},
-		/* used menu letters: abcdefg_ijklmnopqrstuvwxyz57 */
+		{
+			/* menu selection letter */
+			"R",
+			/* display name */
+			"reset HPS",
+			/* software name */
+			"",
+			/* script name */
+			"script-reset",
+			/* hardware name */
+			"",
+			/* help text */
+			R_menu_HELP_TEXT
+		},
 		{
 			NULL,
 			NULL,

common_sw/u-boot_standalone_apps/help_text.h

@@ -491,4 +491,8 @@ address 0x8600_0000.  If it validates a demo.itb FIT image in memory, it\n\
 programs that image into the SDM QSPI flash so that it will be accessed\n\
 by the SSBL upon the next HPS reset."
 
+//------------------------------------------------------------------------------
+#define R_menu_HELP_TEXT \
+"Resets the HPS CPU by triggering a cold reset of HPS."
+
 #endif  /* __HELP_TEXT_H__ */