From f4c6a17c6385f8f309482e133bccd01f49389712 Mon Sep 17 00:00:00 2001
From: Zhuowei Zhang <zhuoweizhang@yahoo.com>
Date: Thu, 21 Feb 2019 17:57:14 -0800
Subject: [PATCH] test boot by adding code to blank screen and freeze

---
 Pixel3XL/Library/Pixel3XLLib/Pixel3XLHelper.S | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Pixel3XL/Library/Pixel3XLLib/Pixel3XLHelper.S b/Pixel3XL/Library/Pixel3XLLib/Pixel3XLHelper.S
index eb85f67..8d66f28 100644
--- a/Pixel3XL/Library/Pixel3XLLib/Pixel3XLHelper.S
+++ b/Pixel3XL/Library/Pixel3XLLib/Pixel3XLHelper.S
@@ -18,6 +18,15 @@
 .align 3
 
 ASM_FUNC(ArmPlatformPeiBootAction)
+// blank the screen, freeze forever
+	mov	x1, 10240
+	mov	x0, 0x9d400000
+	movk	x1, 0x9e44, lsl 16 // 1440 * 2960
+.L2:
+	str	wzr, [x0], 4
+	cmp	x0, x1
+	bne	.L2
+	b .
   ret
 
 //UINTN