/* project specific includes */
#include <jtag/interface.h>
+#include <jtag/transport.h>
#include <helper/time_support.h>
#if IS_CYGWIN == 1
static void signalyzer_h_blink(void);
static void ktlink_blink(void);
+/* common transport support options */
+
+//static const char *jtag_and_swd[] = { "jtag", "swd", NULL };
+
static const struct ft2232_layout ft2232_layouts[] =
{
{ .name = "usbjtag",
/** default bitmask values ddriven on DBUS: TCK/TDI/TDO/TMS and GPIOL(0..4) */
static uint8_t low_output = 0x0;
+
+/* note that direction bit == 1 means that signal is an output */
+
/** default direction bitmask for DBUS: TCK/TDI/TDO/TMS and GPIOL(0..4) */
static uint8_t low_direction = 0x0;
/** default value bitmask for CBUS GPIOH(0..4) */
/** Updates defaults for DBUS signals: the four JTAG signals
* (TCK, TDI, TDO, TMS) and * the four GPIOL signals.
*/
-static inline void ftx232_init_head(void)
+static inline void ftx232_dbus_init(void)
{
low_output = 0x08;
low_direction = 0x0b;
* the four GPIOL signals. Initialization covers value and direction,
* as customized for each layout.
*/
-static int ftx232_init_tail(void)
+static int ftx232_dbus_write(void)
{
uint8_t buf[3];
uint32_t bytes_written;
* NOTE: This is now _specific_ to the "usbjtag" layout.
* Don't try cram any more layouts into this.
*/
- ftx232_init_head();
+ ftx232_dbus_init();
nTRST = 0x10;
nTRSTnOE = 0x10;
nSRST = 0x40;
nSRSTnOE = 0x40;
- return ftx232_init_tail();
+ return ftx232_dbus_write();
}
static int lm3s811_jtag_init(void)
{
- ftx232_init_head();
+ ftx232_dbus_init();
/* There are multiple revisions of LM3S811 eval boards:
* - Rev B (and older?) boards have no SWO trace support.
low_output = 0x88;
low_direction = 0x8b;
- return ftx232_init_tail();
+ return ftx232_dbus_write();
}
static int icdi_jtag_init(void)
{
- ftx232_init_head();
+ ftx232_dbus_init();
/* Most Luminary eval boards support SWO trace output,
* and should use this "luminary_icdi" layout.
+ *
+ * DBUS 0..3 are used for JTAG as usual. GPIOs are used
+ * to switch between JTAG and SWD, or switch the ft2232 UART
+ * between (i) the target UART or (ii) SWO trace data.
+ *
+ * We come up in JTAG mode and may switch to SWD later (with
+ * SWO/trace option if SWD is active).
+ *
+ * DBUS == GPIO-Lx
+ * CBUS == GPIO-Hx
*/
+
+
+#define ICDI_JTAG_EN (1 << 7) /* ADBUS 7 (a.k.a. DBGMOD) */
+#define ICDI_DBG_ENn (1 << 6) /* ADBUS 6 */
+#define ICDI_SRST (1 << 5) /* ADBUS 5 */
+#define ICDI_TDI (1 << 2) /* ADBUS 2 (INPUT) */
+
+#define ICDI_SWO_EN (1 << 4) /* BDBUS 4 */
+#define ICDI_TX_SWO (1 << 1) /* BDBUS 1 */
+
nTRST = 0x0;
nTRSTnOE = 0x00;
- nSRST = 0x20;
+ nSRST = ICDI_SRST;
nSRSTnOE = 0x20;
- low_output = 0x88;
- low_direction = 0xcb;
- return ftx232_init_tail();
+ low_output = 0x08 | ICDI_JTAG_EN;
+ low_direction = 0xcb | ICDI_JTAG_EN;
+
+ return ftx232_dbus_write();
}
static int signalyzer_init(void)
{
- ftx232_init_head();
+ ftx232_dbus_init();
nTRST = 0x10;
nTRSTnOE = 0x10;
nSRST = 0x20;
nSRSTnOE = 0x20;
- return ftx232_init_tail();
+ return ftx232_dbus_write();
}
static int axm0432_jtag_init(void)
buf[1] = high_output;
buf[2] = high_direction;
- if ((retval = ft2232_write(buf, sizeof(buf), &bytes_written)) != ERROR_OK)
+ if (ft2232_write(buf, sizeof(buf), &bytes_written) != ERROR_OK)
{
LOG_ERROR("couldn't initialize Signalyzer-H layout");
return ERROR_JTAG_INIT_FAILED;
.name = "ft2232",
.supported = DEBUG_CAP_TMS_SEQ,
.commands = ft2232_command_handlers,
+ .transports = jtag_only,
.init = ft2232_init,
.quit = ft2232_quit,