prevent abort via polling during jtag_reset

[openocd.git] / src / jtag / core.c

diff --git a/src/jtag/core.c b/src/jtag/core.c
index b8235eb1e969358f4992368a4e7fd2cbc5df9e98..bdfd6e5b259b90af1505c7a62442ea6bedd92b17 100644 (file)
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -137,6 +137,32 @@ int jtag_error_clear(void)
        return temp;
 }
 
+/************/
+
+static bool jtag_poll = 1;
+
+bool is_jtag_poll_safe(void)
+{
+       /* Polling can be disabled explicitly with set_enabled(false).
+        * It is also implicitly disabled while TRST is active and
+        * while SRST is gating the JTAG clock.
+        */
+       if (!jtag_poll || jtag_trst != 0)
+               return false;
+       return jtag_srst == 0 || (jtag_reset_config & RESET_SRST_NO_GATING);
+}
+
+bool jtag_poll_get_enabled(void)
+{
+       return jtag_poll;
+}
+
+void jtag_poll_set_enabled(bool value)
+{
+       jtag_poll = value;
+}
+
+/************/
 
 jtag_tap_t *jtag_all_taps(void)
 {