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/*
* Copyright (c) 2018, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform.h>
#include <psci.h>
#include <stdlib.h>
#include <test_helpers.h>
#include <tftf_lib.h>
static test_result_t mem_prot_check(uintptr_t addr, size_t size, int expected)
{
int ret;
ret = psci_mem_protect_check(addr, size);
if (ret != expected) {
tftf_testcase_printf("MEM_PROTEC_CHECK failed in (%llx,%llx)\n",
(unsigned long long) addr,
(unsigned long long) size);
return 0;
}
return 1;
}
static test_result_t test_region(const mem_region_t *region)
{
uintptr_t max_addr = region->addr + region->size;
if (!mem_prot_check(region->addr, 0, PSCI_E_DENIED))
return 0;
if (!mem_prot_check(region->addr, SIZE_MAX, PSCI_E_DENIED))
return 0;
if (!mem_prot_check(region->addr, 1, PSCI_E_SUCCESS))
return 0;
if (!mem_prot_check(region->addr, 1, PSCI_E_SUCCESS))
return 0;
if (!mem_prot_check(region->addr, region->size - 1, PSCI_E_SUCCESS))
return 0;
if (!mem_prot_check(max_addr - 1, 1, PSCI_E_SUCCESS))
return 0;
return 1;
}
/*
* Test to verify that mem_protect_check_range returns correct answer
* for known memory locations.
*
* Returns:
* TEST_RESULT_SUCCESS : When all the checks return the expected value
* TEST_RESULT_FAIL : when some check fails or return an unepected value
*/
test_result_t test_mem_protect_check(void)
{
int ret, nregions;
const mem_region_t *regions;
ret = tftf_get_psci_feature_info(SMC_PSCI_MEM_PROTECT_CHECK);
if (ret == PSCI_E_NOT_SUPPORTED) {
tftf_testcase_printf("MEM_PROTECT_CHECK is not supported\n");
return TEST_RESULT_SKIPPED;
}
regions = plat_get_prot_regions(&nregions);
if (nregions <= 0) {
tftf_testcase_printf("Platform doesn't define testcases for MEM_PROTECT_CHECK\n");
return TEST_RESULT_SKIPPED;
}
if (!mem_prot_check(UINTPTR_MAX, 1, PSCI_E_DENIED))
return TEST_RESULT_FAIL;
if (!mem_prot_check(1, SIZE_MAX, PSCI_E_DENIED))
return TEST_RESULT_FAIL;
if (!mem_prot_check(UINTPTR_MAX, 0, PSCI_E_DENIED))
return TEST_RESULT_FAIL;
if (!mem_prot_check(0, 1, PSCI_E_DENIED))
return TEST_RESULT_FAIL;
while (nregions-- > 0) {
if (!test_region(regions++))
return TEST_RESULT_FAIL;
}
return TEST_RESULT_SUCCESS;
}
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