test boot by adding code to blank screen and freeze

2019-02-21 17:57:14 -08:00
parent 92d47a6b0e
commit f4c6a17c63
1 changed files with 9 additions and 0 deletions
--- 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