/* this speed value tells that RTCK is requested */
#define RTCK_SPEED -1
+/*
+ * On my Athlon XP 1900+ EHCI host with FT2232H JTAG dongle I get read timeout
+ * errors with a retry count of 100. Increasing it solves the problem for me.
+ * - Dimitar
+ *
+ * FIXME There's likely an issue with the usb_read_timeout from libftdi.
+ * Fix that (libusb? kernel? libftdi? here?) and restore the retry count
+ * to something sane.
+ */
+#define LIBFTDI_READ_RETRY_COUNT 2000
+
#ifndef BUILD_FT2232_HIGHSPEED
#if BUILD_FT2232_FTD2XX == 1
enum { FT_DEVICE_2232H = 6, FT_DEVICE_4232H };
static int icebear_jtag_init(void);
static int cortino_jtag_init(void);
static int signalyzer_h_init(void);
+static int ktlink_init(void);
/* reset procedures for supported layouts */
static void usbjtag_reset(int trst, int srst);
static void sheevaplug_reset(int trst, int srst);
static void icebear_jtag_reset(int trst, int srst);
static void signalyzer_h_reset(int trst, int srst);
+static void ktlink_reset(int trst, int srst);
/* blink procedures for layouts that support a blinking led */
static void olimex_jtag_blink(void);
static void flyswatter_jtag_blink(void);
static void turtle_jtag_blink(void);
static void signalyzer_h_blink(void);
+static void ktlink_blink(void);
static const ft2232_layout_t ft2232_layouts[] =
{
{ "icebear", icebear_jtag_init, icebear_jtag_reset, NULL },
{ "cortino", cortino_jtag_init, comstick_reset, NULL },
{ "signalyzer-h", signalyzer_h_init, signalyzer_h_reset, signalyzer_h_blink },
+ { "ktlink", ktlink_init, ktlink_reset, ktlink_blink },
{ NULL, NULL, NULL, NULL },
};
#elif BUILD_FT2232_LIBFTDI == 1
int retval;
- int timeout = 100;
+ int timeout = LIBFTDI_READ_RETRY_COUNT;
*bytes_read = 0;
while ((*bytes_read < size) && timeout--)
if (*bytes_read < size)
{
- LOG_ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)",
- (unsigned int)(*bytes_read),
- (unsigned int)size);
+ LOG_ERROR("couldn't read enough bytes from "
+ "FT2232 device (%i < %i)",
+ (unsigned)*bytes_read,
+ (unsigned)size);
return ERROR_JTAG_DEVICE_ERROR;
}
if (ft2232_expect_read)
{
- int timeout = 100;
+ /* FIXME this "timeout" is never changed ... */
+ int timeout = LIBFTDI_READ_RETRY_COUNT;
ft2232_buffer_size = 0;
#ifdef _DEBUG_USB_IO_
if (ft2232_expect_read != ft2232_buffer_size)
{
- LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read,
+ LOG_ERROR("ft2232_expect_read (%i) != "
+ "ft2232_buffer_size (%i) "
+ "(%i retries)",
+ ft2232_expect_read,
ft2232_buffer_size,
- 100 - timeout);
+ LIBFTDI_READ_RETRY_COUNT - timeout);
ft2232_debug_dump_buffer();
exit(-1);
}
#ifdef _DEBUG_USB_COMMS_
- LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
+ LOG_DEBUG("read buffer (%i retries): %i bytes",
+ LIBFTDI_READ_RETRY_COUNT - timeout,
+ ft2232_buffer_size);
ft2232_debug_dump_buffer();
#endif
}
{
signalyzer_h_led_set(signalyzer_h_side, SIGNALYZER_LED_RED, 100, 0, 1);
}
+
+/********************************************************************
+ * Support for KT-LINK
+ * JTAG adapter from KRISTECH
+ * http://www.kristech.eu
+ *******************************************************************/
+static int ktlink_init(void)
+{
+ uint8_t buf[3];
+ uint32_t bytes_written;
+ uint8_t swd_en = 0x20; //0x20 SWD disable, 0x00 SWD enable (ADBUS5)
+
+ low_output = 0x08 | swd_en; // value; TMS=1,TCK=0,TDI=0,SWD=swd_en
+ low_direction = 0x3B; // out=1; TCK/TDI/TMS=out,TDO=in,SWD=out,RTCK=in,SRSTIN=in
+
+ // initialize low port
+ buf[0] = 0x80; // command "set data bits low byte"
+ buf[1] = low_output;
+ buf[2] = low_direction;
+ LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
+
+ if ( ( ( ft2232_write(buf, 3, &bytes_written) ) != ERROR_OK ) || (bytes_written != 3) )
+ {
+ LOG_ERROR("couldn't initialize FT2232 with 'ktlink' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ nTRST = 0x01;
+ nSRST = 0x02;
+ nTRSTnOE = 0x04;
+ nSRSTnOE = 0x08;
+
+ high_output = 0x80; // turn LED on
+ high_direction = 0xFF; // all outputs
+
+ enum reset_types jtag_reset_config = jtag_get_reset_config();
+
+ if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
+ {
+ high_output |= nTRSTnOE;
+ high_output &= ~nTRST;
+ }
+ else
+ {
+ high_output &= ~nTRSTnOE;
+ high_output |= nTRST;
+ }
+
+ if (jtag_reset_config & RESET_SRST_PUSH_PULL)
+ {
+ high_output &= ~nSRSTnOE;
+ high_output |= nSRST;
+ }
+ else
+ {
+ high_output |= nSRSTnOE;
+ high_output &= ~nSRST;
+ }
+
+ // initialize high port
+ buf[0] = 0x82; // command "set data bits high byte"
+ buf[1] = high_output; // value
+ buf[2] = high_direction;
+ LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
+
+ if ( ( ( ft2232_write(buf, 3, &bytes_written) ) != ERROR_OK ) || (bytes_written != 3) )
+ {
+ LOG_ERROR("couldn't initialize FT2232 with 'ktlink' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
+static void ktlink_reset(int trst, int srst)
+{
+ enum reset_types jtag_reset_config = jtag_get_reset_config();
+
+ if (trst == 1)
+ {
+ if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
+ high_output &= ~nTRSTnOE;
+ else
+ high_output &= ~nTRST;
+ }
+ else if (trst == 0)
+ {
+ if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
+ high_output |= nTRSTnOE;
+ else
+ high_output |= nTRST;
+ }
+
+ if (srst == 1)
+ {
+ if (jtag_reset_config & RESET_SRST_PUSH_PULL)
+ high_output &= ~nSRST;
+ else
+ high_output &= ~nSRSTnOE;
+ }
+ else if (srst == 0)
+ {
+ if (jtag_reset_config & RESET_SRST_PUSH_PULL)
+ high_output |= nSRST;
+ else
+ high_output |= nSRSTnOE;
+ }
+
+ buffer_write(0x82); // command "set data bits high byte"
+ buffer_write(high_output);
+ buffer_write(high_direction);
+ LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output,high_direction);
+}
+
+static void ktlink_blink(void)
+{
+ /*LED connected to ACBUS7 */
+ if (high_output & 0x80)
+ high_output &= 0x7F;
+ else
+ high_output |= 0x80;
+
+ buffer_write(0x82); // command "set data bits high byte"
+ buffer_write(high_output);
+ buffer_write(high_direction);
+}
+
Code Review / openocd.git / blobdiff