* autodetection if FS or HS device attachted -> adapt tck max
* enable adaptive clocking if HS device attached and jtag_khz = 0 in cfg (not
tested yet)
Note:
The HS devices are currently only support by the drivers from FTDI and not
from the libftdi. So using libftdi and RTCK support will cause a error
message.
Index: jtag/ft2232.c
===================================================================
--- jtag/ft2232.c (Revision 1433)
+++ jtag/ft2232.c (Arbeitskopie)
@@ -70,11 +70,15 @@
#define _DEBUG_USB_COMMS_
#endif
+/* max TCK for the high speed devices 30000 kHz */
+#define FTDI_2232H_4232H_MAX_TCK 30000
+
int ft2232_execute_queue(void);
int ft2232_speed(int speed);
int ft2232_speed_div(int speed, int* khz);
int ft2232_khz(int khz, int* jtag_speed);
+int ft2232_adaptive_clocking(int state);
int ft2232_register_commands(struct command_context_s* cmd_ctx);
int ft2232_init(void);
int ft2232_quit(void);
@@ -85,7 +89,6 @@
int ft2232_handle_vid_pid_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
-
/**
* Function ft2232_stableclocks
* will send out \a num_cycles on the TCK line while the TAP(s)
@@ -101,7 +104,9 @@
char* ft2232_device_desc = NULL;
char* ft2232_serial = NULL;
char* ft2232_layout = NULL;
+unsigned char ft2232_rtck = 0;
unsigned char ft2232_latency = 2;
+unsigned int ft2232_max_tck = 6000;
#define MAX_USB_IDS 8
/* vid = pid = 0 marks the end of the list */
@@ -125,7 +130,7 @@
int comstick_init(void);
int stm32stick_init(void);
int axm0432_jtag_init(void);
-int sheevaplug_init(void);
+int sheevaplug_init(void);
/* reset procedures for supported layouts */
void usbjtag_reset(int trst, int srst);
@@ -157,7 +162,7 @@
{ "comstick", comstick_init, comstick_reset, NULL },
{ "stm32stick", stm32stick_init, stm32stick_reset, NULL },
{ "axm0432_jtag", axm0432_jtag_init, axm0432_jtag_reset, NULL },
- {"sheevaplug", sheevaplug_init, sheevaplug_reset, NULL },
+ { "sheevaplug", sheevaplug_init, sheevaplug_reset, NULL },
{ NULL, NULL, NULL },
};
@@ -171,6 +176,7 @@
#if BUILD_FT2232_FTD2XX == 1
static FT_HANDLE ftdih = NULL;
+static FT_DEVICE device = 0;
#elif BUILD_FT2232_LIBFTDI == 1
static struct ftdi_context ftdic;
#endif
@@ -286,7 +292,23 @@
u8 buf[3];
int retval;
u32 bytes_written;
-
+#if BUILD_FT2232_FTD2XX == 1
+ if (speed == 0)
+ {
+ if ((device == FT_DEVICE_2232H) || (device == FT_DEVICE_4232H))
+ {
+ ft2232_adaptive_clocking(TRUE);
+ }
+ else
+ {
+ LOG_ERROR("device: %lu, doesn't support RTCK", device);
+ }
+ }
+ else
+ {
+ ft2232_adaptive_clocking(FALSE);
+ }
+#endif
buf[0] = 0x86; /* command "set divisor" */
buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
buf[2] = (speed >> 8) & 0xff; /* valueH */
@@ -308,7 +330,7 @@
* AN2232C-01 Command Processor for
* MPSSE and MCU Host Bus. Chapter 3.8 */
- *khz = 6000 / (1 + speed);
+ *khz = ft2232_max_tck / (1 + speed);
return ERROR_OK;
}
@@ -318,8 +340,14 @@
{
if (khz==0)
{
- LOG_ERROR("RCLK not supported");
- return ERROR_FAIL;
+#if BUILD_FT2232_LIBFTDI == 1
+ LOG_ERROR("RCLK not supported");
+ return ERROR_FAIL;
+#endif
+#if BUILD_FT2232_FTD2XX == 1
+ *jtag_speed = 0;
+ return ERROR_OK;
+#endif
}
/* Take a look in the FT2232 manual,
@@ -329,9 +357,9 @@
* We will calc here with a multiplier
* of 10 for better rounding later. */
- /* Calc speed, (6000 / khz) - 1 */
+ /* Calc speed, (ft2232_max_tck / khz) - 1 */
/* Use 65000 for better rounding */
- *jtag_speed = (60000 / khz) - 10;
+ *jtag_speed = ((ft2232_max_tck*10) / khz) - 10;
/* Add 0.9 for rounding */
*jtag_speed += 9;
@@ -354,7 +382,38 @@
return ERROR_OK;
}
+/* Commands only for FT2232H / FT4232H */
+int ft2232_adaptive_clocking(int state)
+{
+ u8 buf;
+ int retval;
+ u32 bytes_written;
+ if (state != 0)
+ {
+ state = 1;
+ }
+
+ if (state)
+ {
+ buf = 0x96; /* enable adaptive clocking */
+ }
+ else
+ {
+ buf = 0x97; /* disable adaptive clocking */
+ }
+
+ LOG_DEBUG("%2.2x ", buf);
+ if ( ( ( retval = ft2232_write(&buf, 1, &bytes_written) ) != ERROR_OK ) || (bytes_written != 1) )
+ {
+ LOG_ERROR("couldn't set adative clocking: %d", retval);
+ return retval;
+ }
+
+ return ERROR_OK;
+}
+
+
int ft2232_register_commands(struct command_context_s* cmd_ctx)
{
register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
@@ -1257,8 +1316,6 @@
high_direction);
}
-
-
void sheevaplug_reset(int trst, int srst)
{
if (trst == 1)
@@ -1533,6 +1590,9 @@
static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int* try_more)
{
FT_STATUS status;
+ DWORD deviceID;
+ char SerialNumber[16];
+ char Description[64];
DWORD openex_flags = 0;
char* openex_string = NULL;
u8 latency_timer;
@@ -1663,6 +1723,25 @@
return ERROR_JTAG_INIT_FAILED;
}
+ if ( ( status = FT_GetDeviceInfo(ftdih, &device, &deviceID, SerialNumber, Description, NULL) ) != FT_OK )
+ {
+ LOG_ERROR("unable to get FT_GetDeviceInfo: %lu", status);
+ return ERROR_JTAG_INIT_FAILED;
+ }
+ else
+ {
+ LOG_INFO("device: %lu", device);
+ LOG_INFO("deviceID: %lu", deviceID);
+ LOG_INFO("SerialNumber: %s", SerialNumber);
+ LOG_INFO("Description: %s", Description);
+
+ if ((device == FT_DEVICE_2232H) || (device == FT_DEVICE_4232H))
+ {
+ ft2232_max_tck = FTDI_2232H_4232H_MAX_TCK;
+ LOG_INFO("max TCK change to: %u kHz", ft2232_max_tck);
+ }
+ }
+
return ERROR_OK;
}
@@ -2306,7 +2385,6 @@
return ERROR_OK;
}
-
int sheevaplug_init(void)
{
u8 buf[3];
@@ -2543,7 +2621,6 @@
return ERROR_OK;
}
-
static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd)
{
int retval = 0;
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