diff --git a/include/user_settings.h b/include/user_settings.h
index 9d7bd1e7a..6ea02d8ec 100644
--- a/include/user_settings.h
+++ b/include/user_settings.h
@@ -239,6 +239,11 @@ extern int tolower(int c);
 
         /* Get access to mp_* math API's for ECC encrypt */
         #define WOLFSSL_PUBLIC_MP
+
+        /* Configure RNG seed */
+        #define CUSTOM_RAND_GENERATE_SEED(buf, sz) 0 /* stub, not used */
+        #define WC_RNG_SEED_CB
+        #define HAVE_HASHDRBG
     #endif
 
     #ifdef WOLFTPM_MMIO
diff --git a/lib/wolfTPM b/lib/wolfTPM
index bbbafd68d..5b7e50a19 160000
--- a/lib/wolfTPM
+++ b/lib/wolfTPM
@@ -1 +1 @@
-Subproject commit bbbafd68d09c6d453a5ef93214c9296dd7bc93b3
+Subproject commit 5b7e50a19c79ef51530df6f32912c60490336fb4
diff --git a/src/image.c b/src/image.c
index 4b1a59078..291565c5f 100644
--- a/src/image.c
+++ b/src/image.c
@@ -962,7 +962,7 @@ static int TPM2_IoCb(TPM2_CTX* ctx, const byte* txBuf, byte* rxBuf,
 
     return ret;
 }
-#endif /* !ARCH_SIM */
+#endif /* !ARCH_SIM && !WOLFTPM_MMIO */
 
 #ifdef WOLFBOOT_MEASURED_BOOT
 #define measure_boot(hash) wolfBoot_tpm2_extend((hash), __LINE__)
diff --git a/stage1/Makefile b/stage1/Makefile
index 54af56b7c..fe99eeee4 100644
--- a/stage1/Makefile
+++ b/stage1/Makefile
@@ -32,8 +32,11 @@ WOLFCRYPT_OBJS:=
 PUBLIC_KEY_OBJS:=
 # make mk scripts aware that we are building stage1
 STAGE1=1
-# Forcefully disable TPM support in first stage loader
-WOLFTPM=0
+# Forcefully disable TPM support in first stage loader for PPC
+ifeq ($(ARCH),PPC)
+	WOLFTPM=0
+	WOLFBOOT_TPM_KEYSTORE=0
+endif
 ELF=0
 MULTIBOOT2=0
 LINUX_PAYLOAD=0
@@ -45,10 +48,13 @@ include ../arch.mk
 include ../options.mk
 
 CFLAGS+= \
-  -I".." -I"../include/" -I"../lib/wolfssl" \
+  -I".." -I"../include/" -I"../lib/wolfssl" -I"../lib/wolfTPM" \
   -D"WOLFSSL_USER_SETTINGS" \
   -D"WOLFTPM_USER_SETTINGS" \
-  -D"PLATFORM_$(TARGET)"
+  -D"PLATFORM_$(TARGET)" \
+
+# Do not change platform auth in stage 1
+CFLAGS+=-D"WOLFBOOT_TPM_NO_CHG_PLAT_AUTH"
 
 # Setup default optimizations (for GCC)
 ifeq ($(USE_GCC_HEADLESS),1)
@@ -89,6 +95,7 @@ LS1_OBJS=$(addprefix $(BUILD_DIR)/, $(notdir $(OBJS)))
 vpath %.c ../src
 vpath %.c ../hal
 vpath %.c ../lib/wolfssl/wolfcrypt/src
+vpath %.c ../lib/wolfTPM/src
 vpath %.c ../src/x86
 vpath %.S ../src
 
diff --git a/tools/tpm/Makefile b/tools/tpm/Makefile
index c150d64a2..482f58fff 100644
--- a/tools/tpm/Makefile
+++ b/tools/tpm/Makefile
@@ -27,6 +27,8 @@ CFLAGS+=$(OPTIMIZE)
 
 ifeq ($(TARGET),sim)
 	CFLAGS+=-D"WOLFTPM_SWTPM"
+else
+	CFLAGS+=-D"WOLFTPM_EXAMPLE_HAL"
 endif
 
 # Sources