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apps/system : Add cputest application for Secondary CPUs management testing
Add cputest application with shell commands for testing CPU driver functionality. Provides commands to enable/disable CPU1 and check CPU status through device interface. Shell commands added: - cpu1on: Enable CPU1 - cpu1off: Disable CPU1 - cpustatus: Show status of all Secondary CPUs Test Cases: Default: TASH>smp - smp will run and all threads exit properly TASH>cpu1off - CPU1 Power off TASH>cpu1on - CPU1 turned back on TASH>smp - smp will run and all threads exit properly
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‎apps/system/cputest/Kconfig‎

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#
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# For a description of the syntax of this configuration file,
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# see kconfig-language at https://www.kernel.org/doc/Documentation/kbuild/kconfig-language.txt
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#
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config SYSTEM_CPUTEST
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bool "CPU Test commands"
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default n
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depends on SMP
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---help---
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Enable support for CPU test commands in TASH. This provides commands
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for testing CPU power management and status functionality on multi-core
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systems. Commands include cpu1on, cpu1off, cpustatus.

‎apps/system/cputest/Make.defs‎

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###########################################################################
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#
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# Copyright 2025 Samsung Electronics All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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# either express or implied.
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# See the License for the specific
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# language governing permissions and limitations under the License.
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#
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###########################################################################
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ifeq ($(CONFIG_SYSTEM_CPUTEST),y)
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CONFIGURED_APPS += system/cputest
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endif

‎apps/system/cputest/Makefile‎

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############################################################################
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#
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# Copyright (c) 2025 Samsung Electronics Co., Ltd All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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# either express or implied.
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# See the License for the specific
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# language governing permissions and limitations under the License.
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#
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###########################################################################
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-include $(TOPDIR)/.config
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-include $(TOPDIR)/Make.defs
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include $(APPDIR)/Make.defs
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ifeq ($(WINTOOL),y)
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INCDIROPT = -w
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endif
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# CPU Test System Utility
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ASRCS =
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CSRCS =
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MAINSRC = cputest.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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MAINOBJ = $(MAINSRC:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS) $(MAINSRC)
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OBJS = $(AOBJS) $(COBJS)
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ifneq ($(CONFIG_BUILD_KERNEL),y)
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OBJS += $(MAINOBJ)
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endif
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ifeq ($(CONFIG_WINDOWS_NATIVE),y)
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BIN = ..\..\libapps$(LIBEXT)
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else
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ifeq ($(WINTOOL),y)
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BIN = ..\\..\\libapps$(LIBEXT)
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else
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BIN = ../../libapps$(LIBEXT)
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endif
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endif
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ifeq ($(WINTOOL),y)
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INSTALL_DIR = "${shell cygpath -w $(BIN_DIR)}"
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else
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INSTALL_DIR = $(BIN_DIR)
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endif
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ROOTDEPPATH = --dep-path .
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# Common build
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VPATH =
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all: .built
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.PHONY: context depend clean distclean
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS) $(MAINOBJ): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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.built: $(OBJS)
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$(call ARCHIVE, $(BIN), $(OBJS))
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$(Q) touch .built
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install:
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context:
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# Create dependencies
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.depend: Makefile $(SRCS)
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$(Q) $(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
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$(Q) touch $@
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depend: .depend
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clean:
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$(call DELFILE, .built)
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$(call CLEAN)
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distclean: clean
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$(call DELFILE, Make.dep)
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$(call DELFILE, .depend)
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-include Make.dep
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.PHONY: preconfig
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preconfig:

‎apps/system/cputest/cputest.c‎

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/****************************************************************************
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*
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* Copyright 2025 Samsung Electronics All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied.
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* See the License for the specific
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* language governing permissions and limitations under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <tinyara/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <tinyara/cpu_driver.h>
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#include <apps/shell/tash.h>
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/****************************************************************************
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* Preprocessor Definitions
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****************************************************************************/
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#define CPU1_DEVICE_PATH "/dev/cpu1"
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const char *cpu_states[] = {
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"running", //0
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"hotplug", //1
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int cputest_cpu1_on(int argc, char *argv[]);
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static int cputest_cpu1_off(int argc, char *argv[]);
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static int cputest_cpu_status(int argc, char *argv[]);
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int cputest_cpu1_on(int argc, char *argv[])
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{
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int fd;
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cpu_state_t state;
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if (sched_getcpu() > 0) {
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printf("can only powerup cpu1 from cpu0!\n");
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return 0;
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}
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printf("powering up cpu1!\n");
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fd = open(CPU1_DEVICE_PATH, O_RDWR);
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if (fd < 0) {
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printf("Cannot open %s file with fd = %d errno = %d\n", CPU1_DEVICE_PATH, fd, errno);
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return 0;
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}
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if (ioctl(fd, IOC_CPU_ENABLE, 1) < 0) {
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printf("ioctl failed errno = %d\n", errno);
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close(fd);
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return 0;
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}
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printf("cpu1 successfully enabled\n");
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if (ioctl(fd, IOC_CPU_GET_STATE, &state) < 0) {
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printf("IOC_CPU_GET_STATE ioctl failed for %s : %d\n", CPU1_DEVICE_PATH, errno);
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close(fd);
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return 0;
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}
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printf("state: %d (%s)\n", state, cpu_states[state]);
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close(fd);
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return 0;
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}
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static int cputest_cpu1_off(int argc, char *argv[])
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{
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int fd;
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cpu_state_t state;
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if (sched_getcpu() > 0) {
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printf("can only powerdown cpu1 from cpu0!\n");
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return 0;
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}
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printf("powering down cpu1!\n");
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fd = open(CPU1_DEVICE_PATH, O_RDWR);
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if (fd < 0) {
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printf("Cannot open %s file with fd = %d errno = %d\n", CPU1_DEVICE_PATH, fd, errno);
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return 0;
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}
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if (ioctl(fd, IOC_CPU_DISABLE, 1) < 0) {
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printf("ioctl failed errno = %d\n", errno);
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close(fd);
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return 0;
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}
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printf("cpu1 successfully disabled\n");
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if (ioctl(fd, IOC_CPU_GET_STATE, &state) < 0) {
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printf("IOC_CPU_GET_STATE ioctl failed for %s : %d\n", CPU1_DEVICE_PATH, errno);
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close(fd);
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return 0;
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}
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printf("state: %d (%s)\n", state, cpu_states[state]);
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close(fd);
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return 0;
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}
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static int cputest_cpu_status(int argc, char *argv[])
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{
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int fd;
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char devname[16];
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cpu_state_t state;
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for (u8 i = 1; i < CONFIG_SMP_NCPUS; i++) {
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snprintf(devname, sizeof(devname), "/dev/cpu%d", i);
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fd = open(devname, O_RDWR);
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if (fd < 0) {
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printf("Cannot open %s file with fd = %d errno = %d\n", devname, fd, errno);
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return 0;
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}
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if (ioctl(fd, IOC_CPU_GET_STATE, &state) < 0) {
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printf("IOC_CPU_GET_STATE ioctl failed for %s : %d\n", devname, errno);
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close(fd);
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return 0;
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}
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printf("cpu state for cpu%d: %d (%s)\n", i, state, cpu_states[state]);
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close(fd);
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}
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return 0;
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}
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const static tash_cmdlist_t cputest_cmds[] = {
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{"cpu1on", cputest_cpu1_on, TASH_EXECMD_ASYNC},
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{"cpu1off", cputest_cpu1_off, TASH_EXECMD_ASYNC},
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{"cpustatus", cputest_cpu_status, TASH_EXECMD_ASYNC},
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{NULL, NULL, 0}
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void cputest_register_cmds(void)
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{
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/* Register the CPU test commands during system initialization */
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tash_cmdlist_install(cputest_cmds);
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}

‎apps/system/init/init.c‎

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extern void iotjs_register_cmds(void);
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#endif
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#ifdef CONFIG_SYSTEM_CPUTEST
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extern void cputest_register_cmds(void);
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#endif
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/****************************************************************************
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* Pravite Functions
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****************************************************************************/
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#ifdef CONFIG_DEBUG_SYSTEM_APP
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sysdbgapp_init();
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#endif
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#ifdef CONFIG_SYSTEM_CPUTEST
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cputest_register_cmds();
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#endif
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}
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#endif /* CONFIG_TASH */
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