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path: root/tftf/tests/runtime_services/secure_service/test_ffa_version.c
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/*
 * Copyright (c) 2020, Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <ffa_helpers.h>
#include <ffa_svc.h>
#include <test_helpers.h>
#include <tftf_lib.h>

/*
 * Using FFA version expected for SPM.
 */
#define SPM_VERSION MAKE_FFA_VERSION(FFA_VERSION_MAJOR, FFA_VERSION_MINOR)

static bool should_skip_test;

/*
 * Calls FFA Version ABI, and checks if the result as expected.
 */
static test_result_t test_ffa_version(uint32_t input_version, uint32_t expected_return)
{
	if (should_skip_test) {
		return TEST_RESULT_SKIPPED;
	}

	smc_ret_values ret_values = ffa_version(input_version);

	uint32_t spm_version = (uint32_t)(0xFFFFFFFF & ret_values.ret0);

	if (spm_version == expected_return) {
		return TEST_RESULT_SUCCESS;
	}

	tftf_testcase_printf("Input Version: 0x%x\nReturn: 0x%x\nExpected: 0x%x\n",
			      input_version, spm_version, expected_return);

	return TEST_RESULT_FAIL;
}

/*
 * @Test_Aim@ Validate what happens when using same version as SPM.
 */
test_result_t test_ffa_version_equal(void)
{
	/*
	 * FFA_VERSION interface is used to check that SPM functionality is supported.
	 * On FFA_VERSION invocation from TFTF, the SPMD returns either NOT_SUPPORTED or
	 * the SPMC version value provided in the SPMC manifest. The variable "should_skip_test"
	 * is set to true when the SPMD returns NOT_SUPPORTED or a mismatched version, which
	 * means that a TFTF physical FF-A endpoint version (SPM_VERSION) does not match the
	 * SPMC's physical FF-A endpoint version. This prevents running the subsequent FF-A
	 * version tests (and break the test flow), as they're not relevant when the SPMD is
	 * not present within BL31 (FFA_VERSION returns NOT_SUPPORTED).
	 */
	test_result_t ret = test_ffa_version(SPM_VERSION, SPM_VERSION);
	if (ret != TEST_RESULT_SUCCESS) {
		should_skip_test = true;
		ret = TEST_RESULT_SKIPPED;
	}
	return ret;
}

/*
 * @Test_Aim@ Validate what happens when setting bit 31 in
 * 'input_version'. As per spec, FFA version is 31 bits long.
 * Bit 31 set is an invalid input.
 */
test_result_t test_ffa_version_bit31(void)
{
	return test_ffa_version(FFA_VERSION_BIT31_MASK | SPM_VERSION, FFA_ERROR_NOT_SUPPORTED);
}

/*
 * @Test_Aim@ Validate what happens for bigger version than SPM's.
 */
test_result_t test_ffa_version_bigger(void)
{
	return test_ffa_version(MAKE_FFA_VERSION(FFA_VERSION_MAJOR + 1, 0), SPM_VERSION);
}

/*
 * @Test_Aim@ Validate what happens for smaller version than SPM's.
 */
test_result_t test_ffa_version_smaller(void)
{
	return test_ffa_version(MAKE_FFA_VERSION(0, 9), SPM_VERSION);
}