This adds support for the Milkymist One JTAG/serial daughterboard, which
is based on a FT2232H chip.
---
urjtag/src/tap/cable/ft2232.c | 101 +++++++++++++++++++++++++++
urjtag/src/tap/cable/generic_usbconn_list.h | 1 +
urjtag/src/tap/cable_list.h | 1 +
3 files changed, 103 insertions(+), 0 deletions(-)
diff --git a/urjtag/src/tap/cable/ft2232.c b/urjtag/src/tap/cable/ft2232.c
index 16316d4..b7f1080 100644
--- a/urjtag/src/tap/cable/ft2232.c
+++ b/urjtag/src/tap/cable/ft2232.c
@@ -191,6 +191,9 @@
#define BITMASK_USBSCARAB2_nSRST (1 << BIT_USBSCARAB2_nSRST)
#define BITMASK_USBSCARAB2_nCONNECTED (1 << BIT_USBSCARAB2_nCONNECTED)
+/* bit and bitmask definitions for Milkymist JTAG/serial daughterboard */
+#define BIT_MILKYMIST_VREF 4
+#define BITMASK_MILKYMIST_VREF (1 << BIT_MILKYMIST_VREF)
typedef struct
@@ -830,6 +833,60 @@ ft2232_usbscarab2_init (urj_cable_t *cable)
return URJ_STATUS_OK;
}
+static int
+ft2232_milkymist_init (urj_cable_t *cable)
+{
+ params_t *params = (params_t *) cable->params;
+ urj_tap_cable_cx_cmd_root_t *cmd_root = &(params->cmd_root);
+
+ if (urj_tap_usbconn_open (cable->link.usb) != URJ_STATUS_OK)
+ return URJ_STATUS_FAIL;
+
+ /* Check if cable is connected to the target and the target is powered on
*/
+ urj_tap_cable_cx_cmd_queue (cmd_root, 1);
+ urj_tap_cable_cx_cmd_push (cmd_root, GET_BITS_LOW);
+ urj_tap_cable_cx_xfer (&(params->cmd_root), &imm_cmd, cable,
+ URJ_TAP_CABLE_COMPLETELY);
+ if ((urj_tap_cable_cx_xfer_recv (cable) & BITMASK_MILKYMIST_VREF)
+ == 0)
+ {
+ urj_error_set (URJ_ERROR_ILLEGAL_STATE,
+ _("Vref not detected. Please power on Milkymist One"));
+ return URJ_STATUS_FAIL;
+ }
+
+ params->low_byte_value = 0;
+ params->low_byte_dir = 0;
+
+ /* Set Data Bits Low Byte
+ TCK = 0, TMS = 1, TDI = 0 */
+ urj_tap_cable_cx_cmd_queue (cmd_root, 0);
+ urj_tap_cable_cx_cmd_push (cmd_root, SET_BITS_LOW);
+ urj_tap_cable_cx_cmd_push (cmd_root,
+ params->low_byte_value | BITMASK_TMS);
+ urj_tap_cable_cx_cmd_push (cmd_root,
+ params->low_byte_dir | BITMASK_TCK
+ | BITMASK_TDI | BITMASK_TMS);
+
+ /* Set Data Bits High Byte */
+ params->high_byte_value = 0;
+ params->high_byte_value = 0;
+ params->high_byte_dir = 0;
+ urj_tap_cable_cx_cmd_push (cmd_root, SET_BITS_HIGH);
+ urj_tap_cable_cx_cmd_push (cmd_root, params->high_byte_value);
+ urj_tap_cable_cx_cmd_push (cmd_root, params->high_byte_dir);
+
+ ft2232h_set_frequency (cable, FT2232H_MAX_TCK_FREQ);
+
+ params->bit_trst = -1; /* not used */
+ params->bit_reset = -1; /* not used */
+
+ params->last_tdo_valid = 0;
+ params->signals = 0;
+
+ return URJ_STATUS_OK;
+}
+
static void
ft2232_generic_done (urj_cable_t *cable)
@@ -1204,6 +1261,30 @@ ft2232_usbscarab2_done (urj_cable_t *cable)
urj_tap_cable_generic_usbconn_done (cable);
}
+static void
+ft2232_milkymist_done (urj_cable_t *cable)
+{
+ params_t *params = (params_t *) cable->params;
+ urj_tap_cable_cx_cmd_root_t *cmd_root = &(params->cmd_root);
+
+ /* Set Data Bits Low Byte
+ set all to input */
+ urj_tap_cable_cx_cmd_queue (cmd_root, 0);
+ urj_tap_cable_cx_cmd_push (cmd_root, SET_BITS_LOW);
+ urj_tap_cable_cx_cmd_push (cmd_root, 0);
+ urj_tap_cable_cx_cmd_push (cmd_root, 0);
+
+ /* Set Data Bits High Byte
+ set all to input */
+ urj_tap_cable_cx_cmd_push (cmd_root, SET_BITS_HIGH);
+ urj_tap_cable_cx_cmd_push (cmd_root, 0);
+ urj_tap_cable_cx_cmd_push (cmd_root, 0);
+ urj_tap_cable_cx_xfer (cmd_root, &imm_cmd, cable,
+ URJ_TAP_CABLE_COMPLETELY);
+
+ urj_tap_cable_generic_usbconn_done (cable);
+}
+
static void
ft2232_clock_schedule (urj_cable_t *cable, int tms, int tdi, int n)
@@ -2177,6 +2258,26 @@ const urj_cable_driver_t
urj_tap_cable_ft2232_usbscarab2_driver = {
};
URJ_DECLARE_FTDX_CABLE(0x0403, 0xbbe0, "-mpsse", "usbScarab2", usbscarab2)
+const urj_cable_driver_t urj_tap_cable_ft2232_milkymist_driver = {
+ "milkymist",
+ N_("Milkymist JTAG/serial (FT2232) Cable"),
+ URJ_CABLE_DEVICE_USB,
+ { .usb = ft2232_connect, },
+ urj_tap_cable_generic_disconnect,
+ ft2232_cable_free,
+ ft2232_milkymist_init,
+ ft2232_milkymist_done,
+ ft2232h_set_frequency,
+ ft2232_clock,
+ ft2232_get_tdo,
+ ft2232_transfer,
+ ft2232_set_signal,
+ urj_tap_cable_generic_get_signal,
+ ft2232_flush,
+ ftdx_usbcable_help
+};
+URJ_DECLARE_FTDX_CABLE(0x20b7, 0x0713, "-mpsse", "milkymist", milkymist)
+
/*
Local Variables:
diff --git a/urjtag/src/tap/cable/generic_usbconn_list.h
b/urjtag/src/tap/cable/generic_usbconn_list.h
index e3a6d03..6cd7b9a 100644
--- a/urjtag/src/tap/cable/generic_usbconn_list.h
+++ b/urjtag/src/tap/cable/generic_usbconn_list.h
@@ -57,6 +57,7 @@ _URJ_USB_FTDX(usbtojtagif)
_URJ_USB_FTDX(signalyzer)
_URJ_USB_FTDX(flyswatter)
_URJ_USB_FTDX(usbscarab2)
+_URJ_USB_FTDX(milkymist)
#endif
#ifdef ENABLE_CABLE_USBBLASTER
_URJ_USB_FTDX(usbblaster)
diff --git a/urjtag/src/tap/cable_list.h b/urjtag/src/tap/cable_list.h
index b7f5523..5675215 100644
--- a/urjtag/src/tap/cable_list.h
+++ b/urjtag/src/tap/cable_list.h
@@ -53,6 +53,7 @@ _URJ_CABLE(ft2232_flyswatter)
_URJ_CABLE(ft2232_gnice)
_URJ_CABLE(ft2232_gniceplus)
_URJ_CABLE(ft2232_jtagkey)
+_URJ_CABLE(ft2232_milkymist)
_URJ_CABLE(ft2232_oocdlinks)
_URJ_CABLE(ft2232_signalyzer)
_URJ_CABLE(ft2232_turtelizer2)
--
1.7.1
------------------------------------------------------------------------------
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