Merge pull request #1570 from Andre-ARM/allwinner/pmic-fixes

Allwinner PMIC fixes
diff --git a/bl31/bl31_main.c b/bl31/bl31_main.c
index 5479a49..4b7f63c 100644
--- a/bl31/bl31_main.c
+++ b/bl31/bl31_main.c
@@ -108,10 +108,8 @@
 
 		int32_t rc = (*bl32_init)();
 
-		if (rc != 0) {
-			WARN("BL31: BL32 initialization failed (rc = %d)\n",
-			     rc);
-		}
+		if (rc == 0)
+			WARN("BL31: BL32 initialization failed\n");
 	}
 	/*
 	 * We are ready to enter the next EL. Prepare entry into the image
diff --git a/plat/arm/common/arm_bl1_setup.c b/plat/arm/common/arm_bl1_setup.c
index d9104ee..ea3703b 100644
--- a/plat/arm/common/arm_bl1_setup.c
+++ b/plat/arm/common/arm_bl1_setup.c
@@ -111,8 +111,11 @@
  *****************************************************************************/
 void arm_bl1_plat_arch_setup(void)
 {
-#if USE_COHERENT_MEM
-	/* ARM platforms dont use coherent memory in BL1 */
+#if USE_COHERENT_MEM && !ARM_CRYPTOCELL_INTEG
+	/*
+	 * Ensure ARM platforms don't use coherent memory in BL1 unless
+	 * cryptocell integration is enabled.
+	 */
 	assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
 #endif
 
@@ -122,7 +125,10 @@
 #if USE_ROMLIB
 		ARM_MAP_ROMLIB_CODE,
 		ARM_MAP_ROMLIB_DATA,
- #endif
+#endif
+#if ARM_CRYPTOCELL_INTEG
+		ARM_MAP_BL_COHERENT_RAM,
+#endif
 		{0}
 	};
 
diff --git a/plat/arm/common/arm_bl2_setup.c b/plat/arm/common/arm_bl2_setup.c
index a8ea075..edad800 100644
--- a/plat/arm/common/arm_bl2_setup.c
+++ b/plat/arm/common/arm_bl2_setup.c
@@ -237,9 +237,11 @@
  ******************************************************************************/
 void arm_bl2_plat_arch_setup(void)
 {
-
-#if USE_COHERENT_MEM
-	/* Ensure ARM platforms dont use coherent memory in BL2 */
+#if USE_COHERENT_MEM && !ARM_CRYPTOCELL_INTEG
+	/*
+	 * Ensure ARM platforms don't use coherent memory in BL2 unless
+	 * cryptocell integration is enabled.
+	 */
 	assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
 #endif
 
@@ -250,6 +252,9 @@
 		ARM_MAP_ROMLIB_CODE,
 		ARM_MAP_ROMLIB_DATA,
 #endif
+#if ARM_CRYPTOCELL_INTEG
+		ARM_MAP_BL_COHERENT_RAM,
+#endif
 		{0}
 	};
 
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index d8eda35..5c2d1e8 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -138,6 +138,14 @@
 $(eval $(call assert_boolean,ARM_CRYPTOCELL_INTEG))
 $(eval $(call add_define,ARM_CRYPTOCELL_INTEG))
 
+# CryptoCell integration relies on coherent buffers for passing data from
+# the AP CPU to the CryptoCell
+ifeq (${ARM_CRYPTOCELL_INTEG},1)
+    ifeq (${USE_COHERENT_MEM},0)
+        $(error "ARM_CRYPTOCELL_INTEG needs USE_COHERENT_MEM to be set.")
+    endif
+endif
+
 PLAT_INCLUDES		+=	-Iinclude/common/tbbr				\
 				-Iinclude/plat/arm/common
 
diff --git a/services/spd/trusty/trusty.c b/services/spd/trusty/trusty.c
index cc808e2..3335836 100644
--- a/services/spd/trusty/trusty.c
+++ b/services/spd/trusty/trusty.c
@@ -322,7 +322,7 @@
 	fpregs_context_restore(get_fpregs_ctx(cm_get_context(NON_SECURE)));
 	cm_set_next_eret_context(NON_SECURE);
 
-	return 0;
+	return 1;
 }
 
 static void trusty_cpu_suspend(uint32_t off)