[PATCH 1/2] ARM: aarch64: fix scr_el3 register setup

[Marco Felsch <m.felsch@pengutronix.de>]

The current code moved '1' as immediate into x0 and does OR with
BIT(10). This doesn't look right since it will set the scr_el3 to 0.

Instead read the scr_el3 and OR the interessting bits to fix this. The
interessting bits are taken from the current U-Boot implementation.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 arch/arm/cpu/lowlevel_64.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/lowlevel_64.S b/arch/arm/cpu/lowlevel_64.S
index ed00c8c47057..1f5a0b73f8b3 100644
--- a/arch/arm/cpu/lowlevel_64.S
+++ b/arch/arm/cpu/lowlevel_64.S
@@ -10,8 +10,8 @@ ENTRY(arm_cpu_lowlevel_init)
 	switch_el x1, 3f, 2f, 1f
 
 3:
-	mov	x0, #1			/* Non-Secure EL0/1 */
-	orr	x0, x0, #(1 << 10)	/* 64-bit EL2 */
+	mrs	x0, scr_el3
+	orr	x0, x0, #0xf			/* SCR_EL3.NS|IRQ|FIQ|EA */
 	msr	scr_el3, x0
 	msr	cptr_el3, xzr
 
-- 
2.39.2