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-rw-r--r--cpu/blackfin/jtag-console.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/cpu/blackfin/jtag-console.c b/cpu/blackfin/jtag-console.c
index 44c0a83..d58582f 100644
--- a/cpu/blackfin/jtag-console.c
+++ b/cpu/blackfin/jtag-console.c
@@ -54,16 +54,23 @@ static void jtag_puts(const char *s)
jtag_send(s, strlen(s));
}
-static int jtag_tstc(void)
+static size_t inbound_len, leftovers_len;
+
+/* Lower layers want to know when jtag has data */
+static int jtag_tstc_dbg(void)
{
return (bfin_read_DBGSTAT() & 0x2);
}
+/* Higher layers want to know when any data is available */
+static int jtag_tstc(void)
+{
+ return jtag_tstc_dbg() || leftovers_len;
+}
+
/* Receive a buffer. The format is:
* [32bit length][actual data]
*/
-static size_t inbound_len;
-static int leftovers_len;
static uint32_t leftovers;
static int jtag_getc(void)
{
@@ -79,7 +86,7 @@ static int jtag_getc(void)
}
/* wait for new data ! */
- while (!jtag_tstc())
+ while (!jtag_tstc_dbg())
continue;
__asm__("%0 = emudat;" : "=d"(emudat));