diff --git a/spm/common/spm_helpers.c b/spm/common/spm_helpers.c
index 1cb5f4d..b2a4709 100644
--- a/spm/common/spm_helpers.c
+++ b/spm/common/spm_helpers.c
@@ -56,3 +56,16 @@
 
 	return (int64_t)ret.ret0;
 }
+
+/**
+ * Return vCPU index for the currently running vCPU.
+ * Virtual MPIDR holds the linear vCPU index information in lower bits.
+ * Keep only first 24 bits (mapping to Aff0/Aff1/Aff2).
+ * Omit Aff3, bit [31], U[30], MT[24].
+ */
+unsigned int spm_get_my_core_pos(void)
+{
+	uint64_t mpidr = read_mpidr_el1();
+
+	return (unsigned int)(mpidr & 0xffffff);
+}
diff --git a/spm/common/spm_helpers.h b/spm/common/spm_helpers.h
index 1d3ddc2..59cdaf1 100644
--- a/spm/common/spm_helpers.h
+++ b/spm/common/spm_helpers.h
@@ -23,4 +23,6 @@
 int64_t spm_interrupt_enable(uint32_t int_id, bool enable, enum interrupt_pin pin);
 int64_t spm_interrupt_deactivate(uint32_t vint_id);
 
+unsigned int spm_get_my_core_pos(void);
+
 #endif /* SPMC_H */