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target/arm_tpiu_swo: Handle errors in pre/post-enable events 

Currently, errors in pre/post-enable events are ignored and capturing is
always started, even if necessary device configuration fails. This
behaviour is confusing to users. Also, the TPIU must be disabled before
re-configuration is possible.

Start capturing and enable TPIU only if no errors in pre/post-enable
events occurred.

Change-Id: I422033e36ca006e38aa4504d491b7947def1237a
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/8254
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
This commit is contained in:
Marc Schink 2024-05-01 12:58:18 +02:00 committed by Antonio Borneo
parent c831758ea4
commit be1aebd818
1 changed files with 11 additions and 5 deletions
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16
src/target/arm_tpiu_swo.c
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@ -161,7 +161,7 @@ static int arm_tpiu_swo_poll_trace(void *priv)
return ERROR_OK;
}
static void arm_tpiu_swo_handle_event(struct arm_tpiu_swo_object *obj, enum arm_tpiu_swo_event event)
static int arm_tpiu_swo_handle_event(struct arm_tpiu_swo_object *obj, enum arm_tpiu_swo_event event)
{
for (struct arm_tpiu_swo_event_action *ea = obj->event_action; ea; ea = ea->next) {
if (ea->event != event)
@ -182,7 +182,7 @@ static void arm_tpiu_swo_handle_event(struct arm_tpiu_swo_object *obj, enum arm_
if (retval == JIM_RETURN)
retval = ea->interp->returnCode;
if (retval == JIM_OK || retval == ERROR_COMMAND_CLOSE_CONNECTION)
return;
return ERROR_OK;
Jim_MakeErrorMessage(ea->interp);
LOG_USER("Error executing event %s on TPIU/SWO %s:\n%s",
@ -191,8 +191,10 @@ static void arm_tpiu_swo_handle_event(struct arm_tpiu_swo_object *obj, enum arm_
Jim_GetString(Jim_GetResult(ea->interp), NULL));
/* clean both error code and stacktrace before return */
Jim_Eval(ea->interp, "error \"\" \"\"");
return;
return ERROR_FAIL;
}
return ERROR_OK;
}
static void arm_tpiu_swo_close_output(struct arm_tpiu_swo_object *obj)
@ -674,7 +676,9 @@ COMMAND_HANDLER(handle_arm_tpiu_swo_enable)
}
/* trigger the event before any attempt to R/W in the TPIU/SWO */
arm_tpiu_swo_handle_event(obj, TPIU_SWO_EVENT_PRE_ENABLE);
retval = arm_tpiu_swo_handle_event(obj, TPIU_SWO_EVENT_PRE_ENABLE);
if (retval != ERROR_OK)
return retval;
retval = wrap_read_u32(target, obj->ap, obj->spot.base + TPIU_DEVID_OFFSET, &value);
if (retval != ERROR_OK) {
@ -800,7 +804,9 @@ COMMAND_HANDLER(handle_arm_tpiu_swo_enable)
if (retval != ERROR_OK)
goto error_exit;
arm_tpiu_swo_handle_event(obj, TPIU_SWO_EVENT_POST_ENABLE);
retval = arm_tpiu_swo_handle_event(obj, TPIU_SWO_EVENT_POST_ENABLE);
if (retval != ERROR_OK)
goto error_exit;
/* START_DEPRECATED_TPIU */
target_handle_event(target, TARGET_EVENT_TRACE_CONFIG);