diff --git a/services/std_svc/spm/sprt.c b/services/std_svc/spm/sprt.c
index 5330025..034dced 100644
--- a/services/std_svc/spm/sprt.c
+++ b/services/std_svc/spm/sprt.c
@@ -8,6 +8,9 @@
 #include <assert.h>
 #include <context_mgmt.h>
 #include <debug.h>
+#include <errno.h>
+#include <limits.h>
+#include <platform.h>
 #include <smccc.h>
 #include <smccc_helpers.h>
 #include <sprt_svc.h>
@@ -16,6 +19,138 @@
 #include "spm_private.h"
 
 /*******************************************************************************
+ * Functions to manipulate memory regions
+ ******************************************************************************/
+
+/*
+ * Attributes are encoded using a different format in the SMC interface than in
+ * the Trusted Firmware, where the mmap_attr_t enum type is used. This function
+ * converts an attributes value from the SMC format to the mmap_attr_t format by
+ * setting MT_RW/MT_RO, MT_USER/MT_PRIVILEGED and MT_EXECUTE/MT_EXECUTE_NEVER.
+ * The other fields are left as 0 because they are ignored by the function
+ * xlat_change_mem_attributes_ctx().
+ */
+static unsigned int smc_attr_to_mmap_attr(unsigned int attributes)
+{
+	unsigned int perm = attributes & SPRT_MEMORY_PERM_ATTR_MASK;
+
+	if (perm == SPRT_MEMORY_PERM_ATTR_RW) {
+		return MT_RW | MT_EXECUTE_NEVER | MT_USER;
+	} else if (perm ==  SPRT_MEMORY_PERM_ATTR_RO) {
+		return MT_RO | MT_EXECUTE_NEVER | MT_USER;
+	} else if (perm == SPRT_MEMORY_PERM_ATTR_RO_EXEC) {
+		return MT_RO | MT_USER;
+	} else {
+		return UINT_MAX;
+	}
+}
+
+/*
+ * This function converts attributes from the Trusted Firmware format into the
+ * SMC interface format.
+ */
+static unsigned int mmap_attr_to_smc_attr(unsigned int attr)
+{
+	unsigned int perm;
+
+	/* No access from EL0. */
+	if ((attr & MT_USER) == 0U)
+		return UINT_MAX;
+
+	if ((attr & MT_RW) != 0) {
+		assert(MT_TYPE(attr) != MT_DEVICE);
+		perm = SPRT_MEMORY_PERM_ATTR_RW;
+	} else {
+		if ((attr & MT_EXECUTE_NEVER) != 0U) {
+			perm = SPRT_MEMORY_PERM_ATTR_RO;
+		} else {
+			perm = SPRT_MEMORY_PERM_ATTR_RO_EXEC;
+		}
+	}
+
+	return perm << SPRT_MEMORY_PERM_ATTR_SHIFT;
+}
+
+static int32_t sprt_memory_perm_attr_get(sp_context_t *sp_ctx, uintptr_t base_va)
+{
+	uint32_t attributes;
+
+	spin_lock(&(sp_ctx->xlat_ctx_lock));
+
+	int ret = xlat_get_mem_attributes_ctx(sp_ctx->xlat_ctx_handle,
+				     base_va, &attributes);
+
+	spin_unlock(&(sp_ctx->xlat_ctx_lock));
+
+	/* Convert error codes of xlat_get_mem_attributes_ctx() into SPM. */
+	assert((ret == 0) || (ret == -EINVAL));
+
+	if (ret != 0)
+		return SPRT_INVALID_PARAMETER;
+
+	unsigned int perm = mmap_attr_to_smc_attr(attributes);
+
+	if (perm == UINT_MAX)
+		return SPRT_INVALID_PARAMETER;
+
+	return SPRT_SUCCESS | perm;
+}
+
+static int32_t sprt_memory_perm_attr_set(sp_context_t *sp_ctx,
+		u_register_t page_address, u_register_t pages_count,
+		u_register_t smc_attributes)
+{
+	int ret;
+	uintptr_t base_va = (uintptr_t) page_address;
+	size_t size = pages_count * PAGE_SIZE;
+
+	VERBOSE("  Start address  : 0x%lx\n", base_va);
+	VERBOSE("  Number of pages: %i (%zi bytes)\n", (int) pages_count, size);
+	VERBOSE("  Attributes     : 0x%lx\n", smc_attributes);
+
+	uint32_t mmap_attr = smc_attr_to_mmap_attr(smc_attributes);
+
+	if (mmap_attr == UINT_MAX) {
+		WARN("%s: Invalid memory attributes: 0x%lx\n", __func__,
+		     smc_attributes);
+		return SPRT_INVALID_PARAMETER;
+	}
+
+	/*
+	 * Perform some checks before actually trying to change the memory
+	 * attributes.
+	 */
+
+	spin_lock(&(sp_ctx->xlat_ctx_lock));
+
+	uint32_t attributes;
+
+	ret = xlat_get_mem_attributes_ctx(sp_ctx->xlat_ctx_handle,
+				     base_va, &attributes);
+
+	if (ret != 0) {
+		spin_unlock(&(sp_ctx->xlat_ctx_lock));
+		return SPRT_INVALID_PARAMETER;
+	}
+
+	if ((attributes & MT_USER) == 0U) {
+		/* Prohibit changing attributes of S-EL1 regions */
+		spin_unlock(&(sp_ctx->xlat_ctx_lock));
+		return SPRT_INVALID_PARAMETER;
+	}
+
+	ret = xlat_change_mem_attributes_ctx(sp_ctx->xlat_ctx_handle,
+					base_va, size, mmap_attr);
+
+	spin_unlock(&(sp_ctx->xlat_ctx_lock));
+
+	/* Convert error codes of xlat_change_mem_attributes_ctx() into SPM. */
+	assert((ret == 0) || (ret == -EINVAL));
+
+	return (ret == 0) ? SPRT_SUCCESS : SPRT_INVALID_PARAMETER;
+}
+
+/*******************************************************************************
  * This function handles all SMCs in the range reserved for SPRT.
  ******************************************************************************/
 uint64_t sprt_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2,
@@ -53,6 +188,24 @@
 	case SPRT_YIELD_AARCH64:
 		spm_sp_synchronous_exit(SPRT_YIELD_AARCH64);
 
+	case SPRT_MEMORY_PERM_ATTR_GET_AARCH64:
+	{
+		/* Get context of the SP in use by this CPU. */
+		unsigned int linear_id = plat_my_core_pos();
+		sp_context_t *sp_ctx = spm_cpu_get_sp_ctx(linear_id);
+
+		SMC_RET1(handle, sprt_memory_perm_attr_get(sp_ctx, x1));
+	}
+
+	case SPRT_MEMORY_PERM_ATTR_SET_AARCH64:
+	{
+		/* Get context of the SP in use by this CPU. */
+		unsigned int linear_id = plat_my_core_pos();
+		sp_context_t *sp_ctx = spm_cpu_get_sp_ctx(linear_id);
+
+		SMC_RET1(handle, sprt_memory_perm_attr_set(sp_ctx, x1, x2, x3));
+	}
+
 	default:
 		break;
 	}