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-rw-r--r--src/jtag/zy1000/zy1000.c93
1 files changed, 92 insertions, 1 deletions
diff --git a/src/jtag/zy1000/zy1000.c b/src/jtag/zy1000/zy1000.c
index 442a09fb..f578058c 100644
--- a/src/jtag/zy1000/zy1000.c
+++ b/src/jtag/zy1000/zy1000.c
@@ -1162,10 +1162,13 @@ int interface_jtag_add_sleep(uint32_t us)
#if BUILD_ECOSBOARD
static char tcpip_stack[2048];
-
static cyg_thread tcpip_thread_object;
static cyg_handle_t tcpip_thread_handle;
+static char watchdog_stack[2048];
+static cyg_thread watchdog_thread_object;
+static cyg_handle_t watchdog_thread_handle;
+
/* Infinite loop peeking & poking */
static void tcpipserver(void)
{
@@ -1276,6 +1279,88 @@ static void tcpip_server(cyg_addrword_t data)
}
+#ifdef WATCHDOG_BASE
+/* If we connect to port 8888 we must send a char every 10s or the board resets itself */
+static void watchdog_server(cyg_addrword_t data)
+{
+ int so_reuseaddr_option = 1;
+
+ int fd;
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+ {
+ LOG_ERROR("error creating socket: %s", strerror(errno));
+ exit(-1);
+ }
+
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
+ sizeof(int));
+
+ struct sockaddr_in sin;
+ unsigned int address_size;
+ address_size = sizeof(sin);
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = INADDR_ANY;
+ sin.sin_port = htons(8888);
+
+ if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
+ {
+ LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
+ exit(-1);
+ }
+
+ if (listen(fd, 1) == -1)
+ {
+ LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
+ exit(-1);
+ }
+
+
+ for (;;)
+ {
+ int watchdog_ip = accept(fd, (struct sockaddr *) &sin, &address_size);
+
+ /* Start watchdog, must be reset every 10 seconds. */
+ HAL_WRITE_UINT32(WATCHDOG_BASE + 4, 4);
+
+ if (watchdog_ip < 0)
+ {
+ LOG_ERROR("couldn't open watchdog socket: %s", strerror(errno));
+ exit(-1);
+ }
+
+ int flag = 1;
+ setsockopt(watchdog_ip, /* socket affected */
+ IPPROTO_TCP, /* set option at TCP level */
+ TCP_NODELAY, /* name of option */
+ (char *)&flag, /* the cast is historical cruft */
+ sizeof(int)); /* length of option value */
+
+
+ char buf;
+ for (;;)
+ {
+ if (read(watchdog_ip, &buf, 1) == 1)
+ {
+ /* Reset timer */
+ HAL_WRITE_UINT32(WATCHDOG_BASE + 8, 0x1234);
+ /* Echo so we can telnet in and see that resetting works */
+ write(watchdog_ip, &buf, 1);
+ } else
+ {
+ /* Stop tickling the watchdog, the CPU will reset in < 10 seconds
+ * now.
+ */
+ return;
+ }
+
+ }
+
+ /* Never reached */
+ }
+}
+#endif
+
int interface_jtag_add_sleep(uint32_t us)
{
jtag_sleep(us);
@@ -1306,6 +1391,12 @@ int zy1000_init(void)
(void *) tcpip_stack, sizeof(tcpip_stack),
&tcpip_thread_handle, &tcpip_thread_object);
cyg_thread_resume(tcpip_thread_handle);
+#ifdef WATCHDOG_BASE
+ cyg_thread_create(1, watchdog_server, (cyg_addrword_t) 0, "watchdog tcip/ip server",
+ (void *) watchdog_stack, sizeof(watchdog_stack),
+ &watchdog_thread_handle, &watchdog_thread_object);
+ cyg_thread_resume(watchdog_thread_handle);
+#endif
#endif
return ERROR_OK;