From 3976a3e2f214c1be279e332ae34e3815a7e3ec67 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Thu, 10 Mar 2016 14:35:55 -0700
Subject: [PATCH] K64F RNGA register

---
 wolfcrypt/src/random.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/wolfcrypt/src/random.c b/wolfcrypt/src/random.c
index f407949d3..e889bf50b 100644
--- a/wolfcrypt/src/random.c
+++ b/wolfcrypt/src/random.c
@@ -1160,7 +1160,13 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
             int i;
 
             /* turn on RNGA module */
-            SIM_SCGC3 |= SIM_SCGC3_RNGA_MASK;
+            #if defined(SIM_SCGC3_RNGA_MASK)
+                SIM_SCGC3 |= SIM_SCGC3_RNGA_MASK;
+            #endif
+            #if defined(SIM_SCGC6_RNGA_MASK)
+                /* additionally needed for at least K64F */
+                SIM_SCGC6 |= SIM_SCGC6_RNGA_MASK;
+            #endif
 
             /* set SLP bit to 0 - "RNGA is not in sleep mode" */
             RNG_CR &= ~RNG_CR_SLP_MASK;