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Index: sys/dev/dwwdt/dwwdt.c
===================================================================
--- sys/dev/dwwdt/dwwdt.c
+++ sys/dev/dwwdt/dwwdt.c
@@ -93,15 +93,20 @@
SYSCTL_NODE(_dev, OID_AUTO, dwwdt, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"Synopsys Designware watchdog timer");
+
/* Setting this to 0 enables full restart mode. */
-static uint32_t dwwdt_prevent_restart = 1;
-SYSCTL_UINT(_dev_dwwdt, OID_AUTO, prevent_restart, CTLFLAG_RW | CTLFLAG_MPSAFE,
- &dwwdt_prevent_restart, 1,
- "Prevent system restart (0 - Disabled; 1 - Enabled)");
+static bool dwwdt_prevent_restart = false;
+SYSCTL_BOOL(_dev_dwwdt, OID_AUTO, prevent_restart, CTLFLAG_RW | CTLFLAG_MPSAFE,
+ &dwwdt_prevent_restart, 0, "Disable system reset on timeout");
+
+static bool dwwdt_debug_enabled = false;
+SYSCTL_BOOL(_dev_dwwdt, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_MPSAFE,
+ &dwwdt_debug_enabled, 0, "Enable debug mode");
-static uint32_t dwwdt_debug_enabled = 0;
-SYSCTL_UINT(_dev_dwwdt, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_MPSAFE,
- &dwwdt_debug_enabled, 1, "Debug mode (0 - Disabled; 1 - Enabled)");
+static bool dwwdt_panic_first = true;
+SYSCTL_BOOL(_dev_dwwdt, OID_AUTO, panic_first, CTLFLAG_RW | CTLFLAG_MPSAFE,
+ &dwwdt_panic_first, 0,
+ "Try to panic on timeout, reset on another timeout");
static int dwwdt_probe(device_t);
static int dwwdt_attach(device_t);
@@ -187,7 +192,11 @@
* This also emulates stopping watchdog.
*/
(void)DWWDT_READ4(sc, DWWDT_EOI);
+ return;
}
+
+ if (dwwdt_panic_first)
+ panic("dwwdt pre-timeout interrupt");
}
static void
@@ -199,7 +208,7 @@
int val;
timeout = cmd & WD_INTERVAL;
- val = MAX(0, timeout + exponent - DWWDT_EXP_OFFSET);
+ val = MAX(0, timeout + exponent - DWWDT_EXP_OFFSET + 1);
dwwdt_stop(sc);
if (cmd == 0 || val > 0x0f) {

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