diff --git a/plat/nvidia/tegra/include/t186/tegra_def.h b/plat/nvidia/tegra/include/t186/tegra_def.h
index 16615a8..bd2c5db 100644
--- a/plat/nvidia/tegra/include/t186/tegra_def.h
+++ b/plat/nvidia/tegra/include/t186/tegra_def.h
@@ -111,4 +111,10 @@
  ******************************************************************************/
 #define TEGRA_SMMU_BASE			0x12000000
 
+/*******************************************************************************
+ * Tegra TZRAM constants
+ ******************************************************************************/
+#define TEGRA_TZRAM_BASE		0x30000000
+#define TEGRA_TZRAM_SIZE		0x50000
+
 #endif /* __TEGRA_DEF_H__ */