tests: arm_smc_call: introduce arm smc call test

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(arm_svc_call)

FILE(GLOB app_sources src/*.c)

target_sources(app PRIVATE ${app_sources})

target_include_directories(app PRIVATE

  ${ARCH_DIR}/${ARCH}/include

)

# Copyright (c) 2022 Arm Limited (or its affiliates). All rights reserved.

# SPDX-License-Identifier: Apache-2.0

config SMC_CALL_USE_HVC

	bool "Set smc call method to hvc"

source "Kconfig.zephyr"

CONFIG_TEST_USERSPACE=y

CONFIG_ZTEST=y

CONFIG_ZTEST_NEW_API=y

/*

 * Copyright (c) 2022 Arm Limited (or its affiliates). All rights reserved.

 * SPDX-License-Identifier: Apache-2.0

 */

#include <zephyr/ztest.h>

#include "zephyr/arch/arm64/arm-smccc.h"

/* SMC function IDs for Standard Service queries */

#define ARM_STD_SMC_CALL_COUNT		0x8400ff00UL

#define ARM_STD_SMC_VERSION		0x8400ff03UL

#define ARM_STD_SMC_UNKNOWN		0xffffffffUL

#define SMC_UNK				-1

typedef void (*smc_call_method_t)(unsigned long, unsigned long,

				  unsigned long, unsigned long,

				  unsigned long, unsigned long,

				  unsigned long, unsigned long,

				  struct arm_smccc_res *);

#ifdef CONFIG_SMC_CALL_USE_HVC

	smc_call_method_t smc_call = arm_smccc_hvc;

#else

	smc_call_method_t smc_call = arm_smccc_smc;

#endif

ZTEST(arm64_smc_call, test_smc_call_func)

{

	struct arm_smccc_res res;

	smc_call(ARM_STD_SMC_CALL_COUNT, 0, 0, 0, 0, 0, 0, 0, &res);

	zassert_true(res.a0 > 0, "Wrong smc call count");

	smc_call(ARM_STD_SMC_VERSION, 0, 0, 0, 0, 0, 0, 0, &res);

	zassert_true((res.a0 >= 0 && res.a1 >= 0),

		"Wrong smc call version");

	smc_call(ARM_STD_SMC_UNKNOWN, 0, 0, 0, 0, 0, 0, 0, &res);

	zassert_true(res.a0 == SMC_UNK, "Wrong return code from smc call");

}

ZTEST_SUITE(arm64_smc_call, NULL, NULL, NULL, NULL, NULL);

tests:

  arch.arm64.smc_call.smc:

    platform_allow: fvp_base_revc_2xaemv8a_smp_ns

    tags: arm smc drivers userspace