diff options
Diffstat (limited to 'cpu/blackfin')
| -rw-r--r-- | cpu/blackfin/jtag-console.c | 15 |
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)); |