diff --git a/plat/intel/soc/agilex/include/agilex_system_manager.h b/plat/intel/soc/agilex/include/agilex_system_manager.h
index 6ec2084..381c2d3 100644
--- a/plat/intel/soc/agilex/include/agilex_system_manager.h
+++ b/plat/intel/soc/agilex/include/agilex_system_manager.h
@@ -65,6 +65,11 @@
 #define AGX_CCU_NOC_CPU0_RAMSPACE0_0		0xf7004688
 #define AGX_CCU_NOC_IOM_RAMSPACE0_0		0xf7018628
 
+#define AGX_SYSMGR_CORE(x)                      (0xffd12000 + (x))
+#define SYSMGR_BOOT_SCRATCH_COLD_0		0x200
+#define SYSMGR_BOOT_SCRATCH_COLD_1		0x204
+#define SYSMGR_BOOT_SCRATCH_COLD_2		0x208
+
 #define DISABLE_BRIDGE_FIREWALL			0x0ffe0101
 #define DISABLE_L4_FIREWALL	(BIT(0) | BIT(16) | BIT(24))