diff --git a/board/freescale/ls1043ardb/ls1043ardb.c b/board/freescale/ls1043ardb/ls1043ardb.c
index 4556ea8..c8f723a 100644
--- a/board/freescale/ls1043ardb/ls1043ardb.c
+++ b/board/freescale/ls1043ardb/ls1043ardb.c
@@ -18,6 +18,8 @@
 #include <fsl_csu.h>
 #include <fsl_esdhc.h>
 #include <fsl_ifc.h>
+#include <environment.h>
+#include <fsl_sec.h>
 #include "cpld.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -123,7 +125,21 @@
 int misc_init_r(void)
 {
 	config_board_mux();
-
+#ifdef CONFIG_SECURE_BOOT
+	/* In case of Secure Boot, the IBR configures the SMMU
+	 * to allow only Secure transactions.
+	 * SMMU must be reset in bypass mode.
+	 * Set the ClientPD bit and Clear the USFCFG Bit
+	 */
+	u32 val;
+	val = (in_le32(SMMU_SCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
+	out_le32(SMMU_SCR0, val);
+	val = (in_le32(SMMU_NSCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
+	out_le32(SMMU_NSCR0, val);
+#endif
+#ifdef CONFIG_FSL_CAAM
+	return sec_init();
+#endif
 	return 0;
 }
 #endif