Also this makes it possible to launch openocd with the dummy driver
again.
--
Øyvind Harboe
US toll free 1-866-980-3434 / International +47 51 63 25 00
http://www.zylin.com/zy1000.html
ARM7 ARM9 ARM11 XScale Cortex
JTAG debugger and flash programmer
From 8ae875a41bd798534802333717fa13ab9e7bf571 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=98yvind=20Harboe?= <oyvind.har...@zylin.com>
Date: Wed, 1 Sep 2010 23:36:31 +0200
Subject: [PATCH] djtag: fix regression when starting OpenOCD with target powered down
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Do not fail startup if communication with target is
not possible.
OpenOCD supports launching without a target connected
or the target powered down.
The user will typically power up the target and issue
a "reset init" + load his application after OpenOCD
is started then.
Signed-off-by: Øyvind Harboe <oyvind.har...@zylin.com>
---
src/jtag/core.c | 18 +++++++++++++-----
1 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/src/jtag/core.c b/src/jtag/core.c
index 1068681..6f9d92a 100644
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -1445,17 +1445,19 @@ int jtag_init_inner(struct command_context *cmd_ctx)
case ERROR_OK:
/* complete success */
break;
- case ERROR_JTAG_INIT_SOFT_FAIL:
+ default:
/* For backward compatibility reasons, try coping with
* configuration errors involving only ID mismatches.
* We might be able to talk to the devices.
+ *
+ * Also the device might be powered down during startup.
+ *
+ * After OpenOCD starts, we can try to power on the device
+ * and run a reset.
*/
LOG_ERROR("Trying to use configured scan chain anyway...");
issue_setup = false;
break;
- default:
- /* some hard error; already issued diagnostics */
- return retval;
}
/* Now look at IR values. Problems here will prevent real
@@ -1466,7 +1468,13 @@ int jtag_init_inner(struct command_context *cmd_ctx)
*/
retval = jtag_validate_ircapture();
if (retval != ERROR_OK)
- return retval;
+ {
+ /* The target might be powered down. The user
+ * can power it up and reset it after firing
+ * up OpenOCD.
+ */
+ issue_setup = false;
+ }
if (issue_setup)
jtag_notify_event(JTAG_TAP_EVENT_SETUP);
--
1.7.0.4
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