From 6b3c3d34734be82a8dd17e0db3232586a5979f2a Mon Sep 17 00:00:00 2001
From: Gareth McMullin <gareth@blacksphere.co.nz>
Date: Thu, 9 Jun 2016 10:56:31 +1200
Subject: [PATCH] cortexa:  Add timeout to reset spin.

---
 src/cortexa.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/cortexa.c b/src/cortexa.c
index 4e47b774..5f783e64 100644
--- a/src/cortexa.c
+++ b/src/cortexa.c
@@ -441,12 +441,16 @@ static void cortexa_reset(target *t)
 	platform_srst_set_val(false);
 
 	/* Spin until Xilinx reconnects us */
+	platform_timeout timeout;
+	platform_timeout_set(&timeout, 1000);
 	volatile struct exception e;
 	do {
 		TRY_CATCH (e, EXCEPTION_ALL) {
 			apb_read(t, DBGDIDR);
 		}
-	} while (e.type == EXCEPTION_ERROR);
+	} while (!platform_timeout_is_expired(&timeout) && e.type == EXCEPTION_ERROR);
+	if (e.type == EXCEPTION_ERROR)
+		raise_exception(e.type, e.msg);
 
 	platform_delay(100);