samples: tfm_ipc: Add reboot to sample

To test/showcase rebooting through TFM.

Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>

samples/tfm_integration/tfm_ipc/README.rst

@@ -20,6 +20,10 @@ non-secure configuration.
 The sample prints test info to the console either as a single-thread or
 multi-thread application.
 
+The sample reboots after 5 seconds to demonstrate rebooting with TF-M.
+The sys_reboot call is routed to TF-M, since the nonsecure app is not allowed
+to perform the reboot directly.
+
 Building and Running
 ********************
 

samples/tfm_integration/tfm_ipc/prj.conf

@@ -2,6 +2,7 @@ CONFIG_BUILD_WITH_TFM=y
 CONFIG_TFM_IPC=y
 CONFIG_TFM_REGRESSION_S=y
 CONFIG_TFM_PARTITION_AUDIT_LOG=n
+CONFIG_REBOOT=y
 
 # The Zephyr CMSIS emulation assumes that ticks are ms, currently
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000

samples/tfm_integration/tfm_ipc/sample.yaml

@@ -16,3 +16,7 @@ tests:
             - "Connect success!"
             - "Call success!"
             - "TF-M IPC on .*"
+            - "The version of the PSA Framework API is"
+            - "Connect success!"
+            - "Call success!"
+            - "TF-M IPC on .*"

samples/tfm_integration/tfm_ipc/src/main.c

@@ -6,6 +6,7 @@
 
 #include <zephyr.h>
 #include <sys/printk.h>
+#include <power/reboot.h>
 
 #include "tfm_api.h"
 #include "tfm_ns_interface.h"
@@ -185,4 +186,7 @@ void main(void)
 	tfm_ipc_test_1006();
 
 	printk("TF-M IPC on %s\n", CONFIG_BOARD);
+
+	k_sleep(K_MSEC(5000));
+	sys_reboot(0);
 }