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/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <limits.h>
#include <utils.h>
#include "psci_private.h"
int psci_mem_protect(unsigned int enable)
{
int val;
assert(psci_plat_pm_ops->read_mem_protect);
assert(psci_plat_pm_ops->write_mem_protect);
if (psci_plat_pm_ops->read_mem_protect(&val) < 0)
return PSCI_E_NOT_SUPPORTED;
if (psci_plat_pm_ops->write_mem_protect(enable) < 0)
return PSCI_E_NOT_SUPPORTED;
return val != 0;
}
int psci_mem_chk_range(uintptr_t base, u_register_t length)
{
int ret;
assert(psci_plat_pm_ops->mem_protect_chk);
if (length == 0 || check_uptr_overflow(base, length-1))
return PSCI_E_DENIED;
ret = psci_plat_pm_ops->mem_protect_chk(base, length);
return (ret < 0) ? PSCI_E_DENIED : PSCI_E_SUCCESS;
}