diff --git a/plat/allwinner/common/sunxi_security.c b/plat/allwinner/common/sunxi_security.c
index 92c83b06e..98b91c39f 100644
--- a/plat/allwinner/common/sunxi_security.c
+++ b/plat/allwinner/common/sunxi_security.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,16 +7,11 @@
 #include <common/debug.h>
 #include <lib/mmio.h>
 
+#include <sunxi_ccu.h>
 #include <sunxi_mmap.h>
 #include <sunxi_private.h>
+#include <sunxi_spc.h>
 
-#ifdef SUNXI_SPC_BASE
-#define SPC_DECPORT_STA_REG(p)	(SUNXI_SPC_BASE + ((p) * 0x0c) + 0x4)
-#define SPC_DECPORT_SET_REG(p)	(SUNXI_SPC_BASE + ((p) * 0x0c) + 0x8)
-#define SPC_DECPORT_CLR_REG(p)	(SUNXI_SPC_BASE + ((p) * 0x0c) + 0xc)
-#endif
-
-#define R_PRCM_SEC_SWITCH_REG	0x1d0
 #define DMA_SEC_REG		0x20
 
 /*
@@ -27,20 +22,18 @@
  */
 void sunxi_security_setup(void)
 {
-#ifdef SUNXI_SPC_BASE
 	int i;
 
 	INFO("Configuring SPC Controller\n");
 	/* SPC setup: set all devices to non-secure */
-	for (i = 0; i < 6; i++)
-		mmio_write_32(SPC_DECPORT_SET_REG(i), 0xff);
-#endif
+	for (i = 0; i < SUNXI_SPC_NUM_PORTS; i++)
+		mmio_write_32(SUNXI_SPC_DECPORT_SET_REG(i), 0xffffffff);
 
 	/* set MBUS clocks, bus clocks (AXI/AHB/APB) and PLLs to non-secure */
 	mmio_write_32(SUNXI_CCU_SEC_SWITCH_REG, 0x7);
 
 	/* Set R_PRCM bus clocks to non-secure */
-	mmio_write_32(SUNXI_R_PRCM_BASE + R_PRCM_SEC_SWITCH_REG, 0x1);
+	mmio_write_32(SUNXI_R_PRCM_SEC_SWITCH_REG, 0x1);
 
 	/* Set all DMA channels (16 max.) to non-secure */
 	mmio_write_32(SUNXI_DMA_BASE + DMA_SEC_REG, 0xffff);
diff --git a/plat/allwinner/sun50i_a64/include/sunxi_ccu.h b/plat/allwinner/sun50i_a64/include/sunxi_ccu.h
new file mode 100644
index 000000000..2a2488621
--- /dev/null
+++ b/plat/allwinner/sun50i_a64/include/sunxi_ccu.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SUNXI_CCU_H
+#define SUNXI_CCU_H
+
+#define SUNXI_CCU_SEC_SWITCH_REG	(SUNXI_CCU_BASE + 0x02f0)
+
+#define SUNXI_R_PRCM_SEC_SWITCH_REG	(SUNXI_R_PRCM_BASE + 0x01d0)
+
+#endif /* SUNXI_CCU_H */
diff --git a/plat/allwinner/sun50i_a64/include/sunxi_mmap.h b/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
index 9d2542fce..6c847d39b 100644
--- a/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
+++ b/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
@@ -36,7 +36,6 @@
 #define SUNXI_MSGBOX_BASE		0x01c17000
 #define SUNXI_SPINLOCK_BASE		0x01c18000
 #define SUNXI_CCU_BASE			0x01c20000
-#define SUNXI_CCU_SEC_SWITCH_REG	(SUNXI_CCU_BASE + 0x2f0)
 #define SUNXI_PIO_BASE			0x01c20800
 #define SUNXI_TIMER_BASE		0x01c20c00
 #define SUNXI_WDOG_BASE			0x01c20ca0
diff --git a/plat/allwinner/sun50i_a64/include/sunxi_spc.h b/plat/allwinner/sun50i_a64/include/sunxi_spc.h
new file mode 100644
index 000000000..5ba7e18fe
--- /dev/null
+++ b/plat/allwinner/sun50i_a64/include/sunxi_spc.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SUNXI_SPC_H
+#define SUNXI_SPC_H
+
+#define SUNXI_SPC_NUM_PORTS		6
+
+#define SUNXI_SPC_DECPORT_STA_REG(p)	(SUNXI_SPC_BASE + 0x0004 + 0x0c * (p))
+#define SUNXI_SPC_DECPORT_SET_REG(p)	(SUNXI_SPC_BASE + 0x0008 + 0x0c * (p))
+#define SUNXI_SPC_DECPORT_CLR_REG(p)	(SUNXI_SPC_BASE + 0x000c + 0x0c * (p))
+
+#endif /* SUNXI_SPC_H */
diff --git a/plat/allwinner/sun50i_h6/include/sunxi_ccu.h b/plat/allwinner/sun50i_h6/include/sunxi_ccu.h
new file mode 100644
index 000000000..85fbb9080
--- /dev/null
+++ b/plat/allwinner/sun50i_h6/include/sunxi_ccu.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SUNXI_CCU_H
+#define SUNXI_CCU_H
+
+#define SUNXI_CCU_SEC_SWITCH_REG	(SUNXI_CCU_BASE + 0x0f00)
+
+#define SUNXI_R_PRCM_SEC_SWITCH_REG	(SUNXI_R_PRCM_BASE + 0x0290)
+
+#endif /* SUNXI_CCU_H */
diff --git a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
index 1b716061b..2d7b09837 100644
--- a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
+++ b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
@@ -30,8 +30,8 @@
 #define SUNXI_DMA_BASE			0x03002000
 #define SUNXI_MSGBOX_BASE		0x03003000
 #define SUNXI_CCU_BASE			0x03001000
-#define SUNXI_CCU_SEC_SWITCH_REG	(SUNXI_CCU_BASE + 0xf00)
 #define SUNXI_PIO_BASE			0x0300b000
+#define SUNXI_SPC_BASE			0x03008000
 #define SUNXI_TIMER_BASE		0x03009000
 #define SUNXI_WDOG_BASE			0x030090a0
 #define SUNXI_THS_BASE			0x05070400
diff --git a/plat/allwinner/sun50i_h6/include/sunxi_spc.h b/plat/allwinner/sun50i_h6/include/sunxi_spc.h
new file mode 100644
index 000000000..0f5965bee
--- /dev/null
+++ b/plat/allwinner/sun50i_h6/include/sunxi_spc.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SUNXI_SPC_H
+#define SUNXI_SPC_H
+
+#define SUNXI_SPC_NUM_PORTS		14
+
+#define SUNXI_SPC_DECPORT_STA_REG(p)	(SUNXI_SPC_BASE + 0x0000 + 0x10 * (p))
+#define SUNXI_SPC_DECPORT_SET_REG(p)	(SUNXI_SPC_BASE + 0x0004 + 0x10 * (p))
+#define SUNXI_SPC_DECPORT_CLR_REG(p)	(SUNXI_SPC_BASE + 0x0008 + 0x10 * (p))
+
+#endif /* SUNXI_SPC_H */