* JTAG adapters based on the FT2232 full and high speed USB parts are
* popular low cost JTAG debug solutions. Many FT2232 based JTAG adapters
* are discrete, but development boards may integrate them as alternatives
- * to more capable (and expensive) third party JTAG pods. Since JTAG uses
- * only one of the two ports on these devices, on integrated boards the
- * second port often serves as a USB-to-serial adapter for the target's
- * console UART even when the JTAG port is not in use. (Systems which
- * support ARM's SWD in addition to JTAG, or instead of it, may use that
- * second port for reading SWV trace data.)
+ * to more capable (and expensive) third party JTAG pods.
+ *
+ * JTAG uses only one of the two communications channels ("MPSSE engines")
+ * on these devices. Adapters based on FT4232 parts have four ports/channels
+ * (A/B/C/D), instead of just two (A/B).
+ *
+ * Especially on development boards integrating one of these chips (as
+ * opposed to discrete pods/dongles), the additional channels can be used
+ * for a variety of purposes, but OpenOCD only uses one channel at a time.
+ *
+ * - As a USB-to-serial adapter for the target's console UART ...
+ * which may be able to support ROM boot loaders that load initial
+ * firmware images to flash (or SRAM).
+ *
+ * - On systems which support ARM's SWD in addition to JTAG, or instead
+ * of it, that second port can be used for reading SWV/SWO trace data.
+ *
+ * - Additional JTAG links, e.g. to a CPLD or * FPGA.
*
* FT2232 based JTAG adapters are "dumb" not "smart", because most JTAG
* request/response interactions involve round trips over the USB link.
/* FT2232 access library includes */
#if BUILD_FT2232_FTD2XX == 1
#include <ftd2xx.h>
+
+enum ftdi_interface
+{
+ INTERFACE_ANY = 0,
+ INTERFACE_A = 1,
+ INTERFACE_B = 2,
+ INTERFACE_C = 3,
+ INTERFACE_D = 4
+};
+
#elif BUILD_FT2232_LIBFTDI == 1
#include <ftdi.h>
#endif
static char * ft2232_device_desc_A = NULL;
static char* ft2232_device_desc = NULL;
static char* ft2232_serial = NULL;
-static char* ft2232_layout = NULL;
static uint8_t ft2232_latency = 2;
static unsigned ft2232_max_tck = FTDI_2232C_MAX_TCK;
/* init procedures for supported layouts */
static int usbjtag_init(void);
static int jtagkey_init(void);
+static int lm3s811_jtag_init(void);
+static int icdi_jtag_init(void);
static int olimex_jtag_init(void);
static int flyswatter_init(void);
static int turtle_init(void);
static int sheevaplug_init(void);
static int icebear_jtag_init(void);
static int cortino_jtag_init(void);
+static int signalyzer_init(void);
static int signalyzer_h_init(void);
static int ktlink_init(void);
+static int redbee_init(void);
/* reset procedures for supported layouts */
-static void usbjtag_reset(int trst, int srst);
+static void ftx23_reset(int trst, int srst);
static void jtagkey_reset(int trst, int srst);
static void olimex_jtag_reset(int trst, int srst);
static void flyswatter_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);
+static void redbee_reset(int trst, int srst);
/* blink procedures for layouts that support a blinking led */
static void olimex_jtag_blink(void);
{
{ .name = "usbjtag",
.init = usbjtag_init,
- .reset = usbjtag_reset,
+ .reset = ftx23_reset,
},
{ .name = "jtagkey",
.init = jtagkey_init,
.reset = jtagkey_reset,
},
{ .name = "signalyzer",
- .init = usbjtag_init,
- .reset = usbjtag_reset,
+ .init = signalyzer_init,
+ .reset = ftx23_reset,
},
{ .name = "evb_lm3s811",
- .init = usbjtag_init,
- .reset = usbjtag_reset,
+ .init = lm3s811_jtag_init,
+ .reset = ftx23_reset,
},
{ .name = "luminary_icdi",
- .init = usbjtag_init,
- .reset = usbjtag_reset,
+ .init = icdi_jtag_init,
+ .reset = ftx23_reset,
},
{ .name = "olimex-jtag",
.init = olimex_jtag_init,
.reset = ktlink_reset,
.blink = ktlink_blink
},
+ { .name = "redbee-econotag",
+ .init = redbee_init,
+ .reset = redbee_reset,
+ },
+ { .name = "redbee-usb",
+ .init = redbee_init,
+ .reset = redbee_reset,
+ .channel = INTERFACE_B,
+ },
{ .name = NULL, /* END OF TABLE */ },
};
-static uint8_t nTRST, nTRSTnOE, nSRST, nSRSTnOE;
+/* bitmask used to drive nTRST; usually a GPIOLx signal */
+static uint8_t nTRST;
+static uint8_t nTRSTnOE;
+/* bitmask used to drive nSRST; usually a GPIOLx signal */
+static uint8_t nSRST;
+static uint8_t nSRSTnOE;
+/** the layout being used with this debug session */
static const struct ft2232_layout *layout;
+
+/** default bitmask values ddriven on DBUS: TCK/TDI/TDO/TMS and GPIOL(0..4) */
static uint8_t low_output = 0x0;
+/** 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) */
static uint8_t high_output = 0x0;
+/** default direction bitmask for CBUS GPIOH(0..4) */
static uint8_t high_direction = 0x0;
#if BUILD_FT2232_FTD2XX == 1
return predicted_size;
}
-static void usbjtag_reset(int trst, int srst)
+/* semi-generic FT2232/FT4232 reset code */
+static void ftx23_reset(int trst, int srst)
{
enum reset_types jtag_reset_config = jtag_get_reset_config();
if (trst == 1)
LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
}
+static void redbee_reset(int trst, int srst)
+{
+ if (trst == 1)
+ {
+ tap_set_state(TAP_RESET);
+ high_output &= ~nTRST;
+ }
+ else if (trst == 0)
+ {
+ high_output |= nTRST;
+ }
+
+ if (srst == 1)
+ {
+ high_output &= ~nSRST;
+ }
+ else if (srst == 0)
+ {
+ high_output |= nSRST;
+ }
+
+ /* command "set data bits low byte" */
+ buffer_write(0x82);
+ 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 int ft2232_execute_runtest(struct jtag_command *cmd)
{
int retval;
{
case JTAG_RESET: retval = ft2232_execute_reset(cmd); break;
case JTAG_RUNTEST: retval = ft2232_execute_runtest(cmd); break;
- case JTAG_STATEMOVE: retval = ft2232_execute_statemove(cmd); break;
+ case JTAG_TLR_RESET: retval = ft2232_execute_statemove(cmd); break;
case JTAG_PATHMOVE: retval = ft2232_execute_pathmove(cmd); break;
case JTAG_SCAN: retval = ft2232_execute_scan(cmd); break;
case JTAG_SLEEP: retval = ft2232_execute_sleep(cmd); break;
char* openex_string = NULL;
uint8_t latency_timer;
- LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)", ft2232_layout, vid, pid);
+ if (layout == NULL) {
+ LOG_WARNING("No ft2232 layout specified'");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)", layout->name, vid, pid);
#if IS_WIN32 == 0
/* Add non-standard Vid/Pid to the linux driver */
{
uint8_t latency_timer;
+ if (layout == NULL) {
+ LOG_WARNING("No ft2232 layout specified'");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
- ft2232_layout, vid, pid);
+ layout->name, vid, pid);
if (ftdi_init(&ftdic) < 0)
return ERROR_JTAG_INIT_FAILED;
uint8_t buf[1];
int retval;
uint32_t bytes_written;
- const struct ft2232_layout* cur_layout = ft2232_layouts;
- int i;
if (tap_get_tms_path_len(TAP_IRPAUSE,TAP_IRPAUSE) == 7)
{
LOG_DEBUG("ft2232 interface using shortest path jtag state transitions");
}
- if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
- {
- ft2232_layout = "usbjtag";
- LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
- }
-
- while (cur_layout->name)
- {
- if (strcmp(cur_layout->name, ft2232_layout) == 0)
- {
- layout = cur_layout;
- break;
- }
- cur_layout++;
- }
-
- if (!layout)
- {
- LOG_ERROR("No matching layout found for %s", ft2232_layout);
+ if (layout == NULL) {
+ LOG_WARNING("No ft2232 layout specified'");
return ERROR_JTAG_INIT_FAILED;
}
- for (i = 0; 1; i++)
+ for (int i = 0; 1; i++)
{
/*
* "more indicates that there are more IDs to try, so we should
more, &try_more);
#elif BUILD_FT2232_LIBFTDI == 1
retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
- more, &try_more, cur_layout->channel);
+ more, &try_more, layout->channel);
#endif
if (retval >= 0)
break;
return ERROR_OK;
}
-static int usbjtag_init(void)
+/** 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)
{
- uint8_t buf[3];
- uint32_t bytes_written;
-
low_output = 0x08;
low_direction = 0x0b;
+}
- if (strcmp(ft2232_layout, "usbjtag") == 0)
- {
- nTRST = 0x10;
- nTRSTnOE = 0x10;
- nSRST = 0x40;
- nSRSTnOE = 0x40;
- }
- else if (strcmp(ft2232_layout, "signalyzer") == 0)
- {
- nTRST = 0x10;
- nTRSTnOE = 0x10;
- nSRST = 0x20;
- nSRSTnOE = 0x20;
- }
- else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
- {
- /* There are multiple revisions of LM3S811 eval boards:
- * - Rev B (and older?) boards have no SWO trace support.
- * - Rev C boards add ADBUS_6 DBG_ENn and BDBUS_4 SWO_EN;
- * they should use the "luminary_icdi" layout instead.
- */
- nTRST = 0x0;
- nTRSTnOE = 0x00;
- nSRST = 0x20;
- nSRSTnOE = 0x20;
- low_output = 0x88;
- low_direction = 0x8b;
- }
- else if (strcmp(ft2232_layout, "luminary_icdi") == 0)
- {
- /* Most Luminary eval boards support SWO trace output,
- * and should use this "luminary_icdi" layout.
- */
- nTRST = 0x0;
- nTRSTnOE = 0x00;
- nSRST = 0x20;
- nSRSTnOE = 0x20;
- low_output = 0x88;
- low_direction = 0xcb;
- }
- else
- {
- LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
- return ERROR_JTAG_INIT_FAILED;
- }
+/** Initializes DBUS signals: the four JTAG signals (TCK, TDI, TDO, TMS),
+ * the four GPIOL signals. Initialization covers value and direction,
+ * as customized for each layout.
+ */
+static int ftx232_init_tail(void)
+{
+ uint8_t buf[3];
+ uint32_t bytes_written;
enum reset_types jtag_reset_config = jtag_get_reset_config();
if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
{
- LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
+ LOG_ERROR("couldn't initialize FT2232 DBUS");
return ERROR_JTAG_INIT_FAILED;
}
return ERROR_OK;
}
+static int usbjtag_init(void)
+{
+ /*
+ * NOTE: This is now _specific_ to the "usbjtag" layout.
+ * Don't try cram any more layouts into this.
+ */
+ ftx232_init_head();
+
+ nTRST = 0x10;
+ nTRSTnOE = 0x10;
+ nSRST = 0x40;
+ nSRSTnOE = 0x40;
+
+ return ftx232_init_tail();
+}
+
+static int lm3s811_jtag_init(void)
+{
+ ftx232_init_head();
+
+ /* There are multiple revisions of LM3S811 eval boards:
+ * - Rev B (and older?) boards have no SWO trace support.
+ * - Rev C boards add ADBUS_6 DBG_ENn and BDBUS_4 SWO_EN;
+ * they should use the "luminary_icdi" layout instead.
+ */
+ nTRST = 0x0;
+ nTRSTnOE = 0x00;
+ nSRST = 0x20;
+ nSRSTnOE = 0x20;
+ low_output = 0x88;
+ low_direction = 0x8b;
+
+ return ftx232_init_tail();
+}
+
+static int icdi_jtag_init(void)
+{
+ ftx232_init_head();
+
+ /* Most Luminary eval boards support SWO trace output,
+ * and should use this "luminary_icdi" layout.
+ */
+ nTRST = 0x0;
+ nTRSTnOE = 0x00;
+ nSRST = 0x20;
+ nSRSTnOE = 0x20;
+ low_output = 0x88;
+ low_direction = 0xcb;
+
+ return ftx232_init_tail();
+}
+
+static int signalyzer_init(void)
+{
+ ftx232_init_head();
+
+ nTRST = 0x10;
+ nTRSTnOE = 0x10;
+ nSRST = 0x20;
+ nSRSTnOE = 0x20;
+ return ftx232_init_tail();
+}
+
static int axm0432_jtag_init(void)
{
uint8_t buf[3];
return ERROR_OK;
}
+static int redbee_init(void)
+{
+ uint8_t buf[3];
+ uint32_t bytes_written;
+
+ low_output = 0x08;
+ low_direction = 0x2b;
+
+ /* initialize low byte for jtag */
+ /* command "set data bits low byte" */
+ buf[0] = 0x80;
+ /* value (TMS = 1,TCK = 0, TDI = 0, nOE = 0) */
+ buf[2] = low_direction;
+ /* dir (output = 1), TCK/TDI/TMS = out, TDO = in, nOE = out */
+ buf[1] = low_output;
+ 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 'redbee' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ nTRST = 0x08;
+ nTRSTnOE = 0x0; /* No output enable for TRST*/
+ nSRST = 0x04;
+ nSRSTnOE = 0x0; /* No output enable for SRST*/
+
+ high_output = 0x0;
+ high_direction = 0x0c;
+
+ enum reset_types jtag_reset_config = jtag_get_reset_config();
+ if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
+ {
+ LOG_ERROR("can't set nTRSTOE to push-pull on redbee");
+ }
+ else
+ {
+ high_output |= nTRST;
+ }
+
+ if (jtag_reset_config & RESET_SRST_PUSH_PULL)
+ {
+ LOG_ERROR("can't set nSRST to push-pull on redbee");
+ }
+ else
+ {
+ high_output |= nSRST;
+ }
+
+ /* initialize high port */
+ buf[0] = 0x82; /* command "set data bits high byte" */
+ buf[1] = high_output; /* value */
+ buf[2] = high_direction; /* all outputs (xRST and xRSTnOE) */
+ 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 'redbee' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
static int jtagkey_init(void)
{
uint8_t buf[3];
COMMAND_HANDLER(ft2232_handle_layout_command)
{
- if (CMD_ARGC == 0)
- return ERROR_OK;
+ if (CMD_ARGC != 1) {
+ LOG_ERROR("Need exactly one argument to ft2232_layout");
+ return ERROR_FAIL;
+ }
- ft2232_layout = malloc(strlen(CMD_ARGV[0]) + 1);
- strcpy(ft2232_layout, CMD_ARGV[0]);
+ if (layout) {
+ LOG_ERROR("already specified ft2232_layout %s",
+ layout->name);
+ return (strcmp(layout->name, CMD_ARGV[0]) != 0)
+ ? ERROR_FAIL
+ : ERROR_OK;
+ }
- return ERROR_OK;
+ for (const struct ft2232_layout *l = ft2232_layouts; l->name; l++) {
+ if (strcmp(l->name, CMD_ARGV[0]) == 0) {
+ layout = l;
+ return ERROR_OK;
+ }
+ }
+
+ LOG_ERROR("No FT2232 layout '%s' found", CMD_ARGV[0]);
+ return ERROR_FAIL;
}
COMMAND_HANDLER(ft2232_handle_vid_pid_command)
projects / openocd / blobdiff