From 9951cee08f3a511a460eadfc2e5490d890cfd3b8 Mon Sep 17 00:00:00 2001
From: Kinsey Moore <kinsey.moore@oarcorp.com>
Date: Mon, 15 Feb 2021 09:05:10 -0600
Subject: bsps/aarch64: RTEMS_DEBUG stack alignment faults

Run with stack alignment faults enabled under RTEMS_DEBUG to catch any
stack misalignments early. This makes it easier to track them down
should they ever occur.
---
 bsps/aarch64/shared/start/start.S | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'bsps/aarch64/shared/start/start.S')

diff --git a/bsps/aarch64/shared/start/start.S b/bsps/aarch64/shared/start/start.S
index f4c62b2b6c..e4dd3c2cee 100644
--- a/bsps/aarch64/shared/start/start.S
+++ b/bsps/aarch64/shared/start/start.S
@@ -90,6 +90,14 @@ _start:
 #endif
 #endif
 
+	/* Initialize SCTLR_EL1 */
+	mov x0, XZR
+#if defined(RTEMS_DEBUG)
+	/* Enable Stack alignment checking */
+	orr x0, x0, #(1<<3)
+#endif
+	msr SCTLR_EL1, x0
+
 #ifdef RTEMS_SMP
 	/* Read MPIDR and get current processor index */
         mrs	x7, mpidr_el1
-- 
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