[u-boot] rk33plat: enable exception rounting to EL2 when running EL2.

Change-Id: If81e8ea0b2cc42356658194b2516b820f12e6775
Signed-off-by: Firefly <service@t-firefly.com>
(cherry picked from commit 6a8ab9e6142cb781595e502cabc7cad5b5954873)

u-boot/arch/arm/cpu/armv8/start.S

@@ -225,6 +225,23 @@ el1_start:
 	bl	gic_init_secure_percpu
 #endif
 
+#if defined(CONFIG_ROCKCHIP)
+	/*
+	 * Setting HCR_EL2.TGE AMO IMO FMO for exception rounting to EL2
+	 */
+	mrs	x0, CurrentEL	/* check currentEL */
+	cmp	x0, 0x8
+	b.ne	endseting	/* currentEL != EL2 */
+
+	mrs	x9, hcr_el2
+	orr	x9, x9, #(7 << 3)	/* HCR_EL2.AMO IMO FMO set */
+	orr	x9, x9, #(1 << 27)	/* HCR_EL2.TGE set */
+	msr	hcr_el2, x9
+
+endseting:
+	nop
+#endif /* CONFIG_ROCKCHIP */
+
 	branch_if_master x0, x1, 2f
 
 	/*

u-boot/include/configs/rk33plat.h

@@ -65,9 +65,6 @@
 #define CONFIG_SWITCH_EL3_TO_EL1
 #endif
 
-/* do_nonsec_virt_switch when enter kernel */
-#define CONFIG_ARMV8_SWITCH_TO_EL1
-
 /* icache enable when start to kernel */
 #define CONFIG_ICACHE_ENABLE_FOR_KERNEL