summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/jtag/core.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/src/jtag/core.c b/src/jtag/core.c
index 415d1e82..7c85839b 100644
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -567,12 +567,14 @@ int jtag_add_statemove(tap_state_t goal_state)
tap_state_name(goal_state));
- if (goal_state == cur_state)
- ; /* nothing to do */
- else if (goal_state == TAP_RESET)
- {
+ /* If goal is RESET, be paranoid and force that that transition
+ * (e.g. five TCK cycles, TMS high). Else trust "cur_state".
+ */
+ if (goal_state == TAP_RESET)
jtag_add_tlr();
- }
+ else if (goal_state == cur_state)
+ /* nothing to do */ ;
+
else if (tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state))
{
unsigned tms_bits = tap_get_tms_path(cur_state, goal_state);