commit 34edaed563e78081ce17ff1f682628c11d337bf2
author Sandrine Bailleux <sandrine.bailleux@arm.com> Mon Dec 02 15:45:07 2013 +0000
committer Dan Handley <dan.handley@arm.com> Thu Dec 12 16:06:48 2013 +0000
tree 9e12df147d801ba67d1a03b42b278eb1c02a3315
parent ba6980a8db0215ba42c103b80f8981cfda80171c

BL2: Sanity check value in x0 in the entry point code

Change-Id: Icef68e314e6ba0f3694189b57f4b1dbbea5ba255

bl2/aarch64/bl2_entrypoint.S

diff --git a/bl2/aarch64/bl2_entrypoint.S b/bl2/aarch64/bl2_entrypoint.S
index 75970f7..03d0848 100644
--- a/bl2/aarch64/bl2_entrypoint.S
+++ b/bl2/aarch64/bl2_entrypoint.S
@@ -78,6 +78,14 @@
 	isb
 
 	/* ---------------------------------------------
+	 * Check the opcodes out of paranoia.
+	 * ---------------------------------------------
+	 */
+	mov	x0, #RUN_IMAGE
+	cmp	x0, x20
+	b.ne	_panic
+
+	/* ---------------------------------------------
 	 * Zero out NOBITS sections. There are 2 of them:
 	 *   - the .bss section;
 	 *   - the coherent memory section.