* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
+* Copyright (C) 2009 by SoftPLC Corporation. http://softplc.com *
+* Dick Hollenbeck <dick@softplc.com> *
+* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* found here:
* http://www.ftdichip.com/Documents/AppNotes/AN2232C-01_MPSSE_Cmnd.pdf
* Hereafter this is called the "MPSSE Spec".
+ *
+ * The datasheet for the ftdichip.com's FT2232D part is here:
+ * http://www.ftdichip.com/Documents/DataSheets/DS_FT2232D.pdf
*/
#include "config.h"
#endif
-#if IS_CYGWIN == 1
-#include "windows.h"
-#endif
-
-#include "replacements.h"
-
/* project specific includes */
-#include "log.h"
-#include "types.h"
#include "jtag.h"
-#include "configuration.h"
#include "time_support.h"
-/* system includes */
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
+#if IS_CYGWIN == 1
+#include <windows.h>
+#endif
+
+#include <assert.h>
+
+#if (BUILD_FT2232_FTD2XX==1 && BUILD_FT2232_LIBFTDI==1)
+#error "BUILD_FT2232_FTD2XX && BUILD_FT2232_LIBFTDI are mutually exclusive"
+#elif(BUILD_FT2232_FTD2XX!=1 && BUILD_FT2232_LIBFTDI!=1)
+#error "BUILD_FT2232_FTD2XX || BUILD_FT2232_LIBFTDI must be chosen"
+#endif
/* FT2232 access library includes */
#if BUILD_FT2232_FTD2XX == 1
#include <ftdi.h>
#endif
-/* enable this to debug io latency
- */
-#if 0
-#define _DEBUG_USB_IO_
-#endif
+/* max TCK for the high speed devices 30000 kHz */
+#define FTDI_2232H_4232H_MAX_TCK 30000
-/* enable this to debug communication
- */
-#if 0
-#define _DEBUG_USB_COMMS_
-#endif
+static int ft2232_execute_queue(void);
-int ft2232_execute_queue(void);
+static int ft2232_speed(int speed);
+static int ft2232_speed_div(int speed, int* khz);
+static int ft2232_khz(int khz, int* jtag_speed);
+static int ft2232_register_commands(struct command_context_s* cmd_ctx);
+static int ft2232_init(void);
+static int ft2232_quit(void);
-int ft2232_speed(int speed);
-int ft2232_speed_div(int speed, int* khz);
-int ft2232_khz(int khz, int* jtag_speed);
-int ft2232_register_commands(struct command_context_s* cmd_ctx);
-int ft2232_init(void);
-int ft2232_quit(void);
-
-int ft2232_handle_device_desc_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
-int ft2232_handle_serial_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
-int ft2232_handle_layout_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
-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);
+static int ft2232_handle_device_desc_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
+static int ft2232_handle_serial_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
+static int ft2232_handle_layout_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
+static int ft2232_handle_vid_pid_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
+static int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc);
/**
static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd);
-char* ft2232_device_desc = NULL;
-char* ft2232_serial = NULL;
-char* ft2232_layout = NULL;
-unsigned char ft2232_latency = 2;
+static char * ft2232_device_desc_A = NULL;
+static char* ft2232_device_desc = NULL;
+static char* ft2232_serial = NULL;
+static char* ft2232_layout = NULL;
+static u8 ft2232_latency = 2;
+static unsigned ft2232_max_tck = 6000;
+
#define MAX_USB_IDS 8
/* vid = pid = 0 marks the end of the list */
} ft2232_layout_t;
/* init procedures for supported layouts */
-int usbjtag_init(void);
-int jtagkey_init(void);
-int olimex_jtag_init(void);
-int flyswatter_init(void);
-int turtle_init(void);
-int comstick_init(void);
-int stm32stick_init(void);
-int axm0432_jtag_init(void);
-int sheevaplug_init(void);
+static int usbjtag_init(void);
+static int jtagkey_init(void);
+static int olimex_jtag_init(void);
+static int flyswatter_init(void);
+static int turtle_init(void);
+static int comstick_init(void);
+static int stm32stick_init(void);
+static int axm0432_jtag_init(void);
+static int sheevaplug_init(void);
+static int icebear_jtag_init(void);
+static int cortino_jtag_init(void);
/* reset procedures for supported layouts */
-void usbjtag_reset(int trst, int srst);
-void jtagkey_reset(int trst, int srst);
-void olimex_jtag_reset(int trst, int srst);
-void flyswatter_reset(int trst, int srst);
-void turtle_reset(int trst, int srst);
-void comstick_reset(int trst, int srst);
-void stm32stick_reset(int trst, int srst);
-void axm0432_jtag_reset(int trst, int srst);
-void sheevaplug_reset(int trst, int srst);
+static void usbjtag_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 turtle_reset(int trst, int srst);
+static void comstick_reset(int trst, int srst);
+static void stm32stick_reset(int trst, int srst);
+static void axm0432_jtag_reset(int trst, int srst);
+static void sheevaplug_reset(int trst, int srst);
+static void icebear_jtag_reset(int trst, int srst);
/* blink procedures for layouts that support a blinking led */
-void olimex_jtag_blink(void);
-void flyswatter_jtag_blink(void);
-void turtle_jtag_blink(void);
+static void olimex_jtag_blink(void);
+static void flyswatter_jtag_blink(void);
+static void turtle_jtag_blink(void);
-ft2232_layout_t ft2232_layouts[] =
+ft2232_layout_t ft2232_layouts[] =
{
{ "usbjtag", usbjtag_init, usbjtag_reset, NULL },
{ "jtagkey", jtagkey_init, jtagkey_reset, NULL },
{ "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 },
- { NULL, NULL, NULL },
+ { "sheevaplug", sheevaplug_init, sheevaplug_reset, NULL },
+ { "icebear", icebear_jtag_init, icebear_jtag_reset, NULL },
+ { "cortino", cortino_jtag_init, comstick_reset, NULL },
+ { NULL, NULL, NULL, NULL },
};
static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
static u8 high_direction = 0x0;
#if BUILD_FT2232_FTD2XX == 1
-static FT_HANDLE ftdih = NULL;
+static FT_HANDLE ftdih = NULL;
#elif BUILD_FT2232_LIBFTDI == 1
static struct ftdi_context ftdic;
#endif
static jtag_command_t* first_unsent; /* next command that has to be sent */
static int require_send;
+
+/* http://urjtag.wiki.sourceforge.net/Cable+FT2232 says:
+
+ "There is a significant difference between libftdi and libftd2xx. The latter
+ one allows to schedule up to 64*64 bytes of result data while libftdi fails
+ with more than 4*64. As a consequence, the FT2232 driver is forced to
+ perform around 16x more USB transactions for long command streams with TDO
+ capture when running with libftdi."
+
+ No idea how we get
+ #define FT2232_BUFFER_SIZE 131072
+ a comment would have been nice.
+*/
+
+#define FT2232_BUFFER_SIZE 131072
+
static u8* ft2232_buffer = NULL;
static int ft2232_buffer_size = 0;
static int ft2232_read_pointer = 0;
static int ft2232_expect_read = 0;
-#define FT2232_BUFFER_SIZE 131072
-#define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
-#define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
+/**
+ * Function buffer_write
+ * writes a byte into the byte buffer, "ft2232_buffer", which must be sent later.
+ * @param val is the byte to send.
+ */
+static inline void buffer_write( u8 val )
+{
+ assert( ft2232_buffer );
+ assert( (unsigned) ft2232_buffer_size < (unsigned) FT2232_BUFFER_SIZE );
+ ft2232_buffer[ft2232_buffer_size++] = val;
+}
+
+/**
+ * Function buffer_read
+ * returns a byte from the byte buffer.
+ */
+static inline u8 buffer_read(void)
+{
+ assert( ft2232_buffer );
+ assert( ft2232_read_pointer < ft2232_buffer_size );
+ return ft2232_buffer[ft2232_read_pointer++];
+}
+
+
+/**
+ * Function clock_tms
+ * clocks out \a bit_count bits on the TMS line, starting with the least
+ * significant bit of tms_bits and progressing to more significant bits.
+ * Rigorous state transition logging is done here via tap_set_state().
+ *
+ * @param pmsse_cmd is one of the MPSSE TMS oriented commands such as 0x4b or 0x6b. See
+ * the MPSSE spec referenced above for their functionality. The MPSSE command
+ * "Clock Data to TMS/CS Pin (no Read)" is often used for this, 0x4b.
+ *
+ * @param tms_bits holds the sequence of bits to send.
+ * @param tms_count tells how many bits in the sequence.
+ * @param tdi_bit is a single bit which is passed on to TDI before the first TCK cycle
+ * and is held static for the duration of TMS clocking. See the MPSSE spec referenced above.
+ */
+static void clock_tms( u8 mpsse_cmd, int tms_bits, int tms_count, bool tdi_bit )
+{
+ u8 tms_byte;
+ int i;
+ int tms_ndx; /* bit index into tms_byte */
+
+ assert( tms_count > 0 );
+
+// LOG_DEBUG("mpsse cmd=%02x, tms_bits=0x%08x, bit_count=%d", mpsse_cmd, tms_bits, tms_count );
+
+ for (tms_byte = tms_ndx = i = 0; i < tms_count; ++i, tms_bits>>=1)
+ {
+ bool bit = tms_bits & 1;
+
+ if(bit)
+ tms_byte |= (1<<tms_ndx);
+
+ /* always do state transitions in public view */
+ tap_set_state( tap_state_transition(tap_get_state(), bit) );
+
+ /* we wrote a bit to tms_byte just above, increment bit index. if bit was zero
+ also increment.
+ */
+ ++tms_ndx;
+
+ if( tms_ndx==7 || i==tms_count-1 )
+ {
+ buffer_write( mpsse_cmd );
+ buffer_write( tms_ndx - 1 );
+
+ /* Bit 7 of the byte is passed on to TDI/DO before the first TCK/SK of
+ TMS/CS and is held static for the duration of TMS/CS clocking.
+ */
+ buffer_write( tms_byte | (tdi_bit << 7) );
+ }
+ }
+}
+
+
+/**
+ * Function get_tms_buffer_requirements
+ * returns what clock_tms() will consume if called with
+ * same \a bit_count.
+ */
+static inline int get_tms_buffer_requirements( int bit_count )
+{
+ return ((bit_count + 6)/7) * 3;
+}
+
+
+/**
+ * Function move_to_state
+ * moves the TAP controller from the current state to a
+ * \a goal_state through a path given by tap_get_tms_path(). State transition
+ * logging is performed by delegation to clock_tms().
+ *
+ * @param goal_state is the destination state for the move.
+ */
+static void move_to_state( tap_state_t goal_state )
+{
+ tap_state_t start_state = tap_get_state();
+
+ /* goal_state is 1/2 of a tuple/pair of states which allow convenient
+ lookup of the required TMS pattern to move to this state from the
+ start state.
+ */
+
+ /* do the 2 lookups */
+ int tms_bits = tap_get_tms_path(start_state, goal_state);
+ int tms_count = tap_get_tms_path_len(start_state, goal_state);
+
+ DEBUG_JTAG_IO( "start=%s goal=%s", tap_state_name(start_state), tap_state_name(goal_state) );
+
+ clock_tms( 0x4b, tms_bits, tms_count, 0 );
+}
+
jtag_interface_t ft2232_interface =
{
.quit = ft2232_quit,
};
-int ft2232_write(u8* buf, int size, u32* bytes_written)
+static int ft2232_write(u8* buf, int size, u32* bytes_written)
{
#if BUILD_FT2232_FTD2XX == 1
FT_STATUS status;
- DWORD dw_bytes_written;
+ DWORD dw_bytes_written;
if ( ( status = FT_Write(ftdih, buf, size, &dw_bytes_written) ) != FT_OK )
{
*bytes_written = dw_bytes_written;
}
-int ft2232_read(u8* buf, int size, u32* bytes_read)
+static int ft2232_read(u8* buf, u32 size, u32* bytes_read)
{
#if BUILD_FT2232_FTD2XX == 1
DWORD dw_bytes_read;
}
-int ft2232_speed(int speed)
+static int ft2232_speed(int speed)
{
u8 buf[3];
int retval;
u32 bytes_written;
- buf[0] = 0x86; /* command "set divisor" */
+ buf[0] = 0x86; /* command "set divisor" */
buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
buf[2] = (speed >> 8) & 0xff; /* valueH */
}
-int ft2232_speed_div(int speed, int* khz)
+static int ft2232_speed_div(int speed, int* khz)
{
/* Take a look in the FT2232 manual,
* 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;
}
-int ft2232_khz(int khz, int* jtag_speed)
+static int ft2232_khz(int khz, int* jtag_speed)
{
if (khz==0)
{
- LOG_ERROR("RCLK not supported");
+ LOG_DEBUG("RTCK not supported");
return ERROR_FAIL;
}
* 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;
}
-int ft2232_register_commands(struct command_context_s* cmd_ctx)
+static int ft2232_register_commands(struct command_context_s* cmd_ctx)
{
register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
COMMAND_CONFIG, "the USB device description of the FTDI FT2232 device");
tap_set_end_state(state);
else
{
- LOG_ERROR("BUG: %i is not a valid end state", state);
+ LOG_ERROR("BUG: %s is not a stable end state", tap_state_name(state));
exit(-1);
}
}
-
-void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
+static void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
{
int num_bytes = (scan_size + 7) / 8;
int bits_left = scan_size;
while (num_bytes-- > 1)
{
- buffer[cur_byte] = BUFFER_READ;
- cur_byte++;
+ buffer[cur_byte++] = buffer_read();
bits_left -= 8;
}
buffer[cur_byte] = 0x0;
+ /* There is one more partial byte left from the clock data in/out instructions */
if (bits_left > 1)
{
- buffer[cur_byte] = BUFFER_READ >> 1;
+ buffer[cur_byte] = buffer_read() >> 1;
}
-
- buffer[cur_byte] = ( buffer[cur_byte] | ( (BUFFER_READ & 0x02) << 6 ) ) >> (8 - bits_left);
+ /* This shift depends on the length of the clock data to tms instruction, insterted at end of the scan, now fixed to a two step transition in ft2232_add_scan */
+ buffer[cur_byte] = ( buffer[cur_byte] | ( ( (buffer_read()) << 1 ) & 0x80 )) >> (8 - bits_left);
}
-void ft2232_debug_dump_buffer(void)
+static void ft2232_debug_dump_buffer(void)
{
int i;
char line[256];
}
-int ft2232_send_and_recv(jtag_command_t* first, jtag_command_t* last)
+static int ft2232_send_and_recv(jtag_command_t* first, jtag_command_t* last)
{
jtag_command_t* cmd;
u8* buffer;
int scan_size;
enum scan_type type;
int retval;
- u32 bytes_written;
- u32 bytes_read;
+ u32 bytes_written=0;
+ u32 bytes_read=0;
#ifdef _DEBUG_USB_IO_
struct timeval start, inter, inter2, end;
timeval_subtract(&d_inter2, &inter2, &start);
timeval_subtract(&d_end, &end, &start);
- LOG_INFO("inter: %i.%06i, inter2: %i.%06i end: %i.%06i", d_inter.tv_sec, d_inter.tv_usec, d_inter2.tv_sec,
- d_inter2.tv_usec, d_end.tv_sec,
- d_end.tv_usec);
+ LOG_INFO("inter: %u.%06u, inter2: %u.%06u end: %u.%06u",
+ (unsigned)d_inter.tv_sec, (unsigned)d_inter.tv_usec,
+ (unsigned)d_inter2.tv_sec, (unsigned)d_inter2.tv_usec,
+ (unsigned)d_end.tv_sec, (unsigned)d_end.tv_usec);
#endif
ft2232_buffer_size = bytes_read;
}
-void ft2232_add_pathmove(pathmove_command_t* cmd)
+/**
+ * Function ft2232_add_pathmove
+ * moves the TAP controller from the current state to a new state through the
+ * given path, where path is an array of tap_state_t's.
+ *
+ * @param path is an array of tap_stat_t which gives the states to traverse through
+ * ending with the last state at path[num_states-1]
+ * @param num_states is the count of state steps to move through
+ */
+static void ft2232_add_pathmove( tap_state_t* path, int num_states )
{
- int num_states = cmd->num_states;
- int state_count = 0;
-
- while (num_states)
- {
- u8 tms_byte = 0; /* zero this on each MPSSE batch */
-
- int bit_count = 0;
+ int tms_bits = 0;
+ int state_ndx;
+ tap_state_t walker = tap_get_state();
- int num_states_batch = num_states > 7 ? 7 : num_states;
+ assert( (unsigned) num_states <= 32u ); /* tms_bits only holds 32 bits */
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
-
- /* number of states remaining */
- BUFFER_ADD = num_states_batch - 1;
+ /* this loop verifies that the path is legal and logs each state in the path */
+ for( state_ndx = 0; state_ndx < num_states; ++state_ndx )
+ {
+ tap_state_t desired_next_state = path[state_ndx];
- while (num_states_batch--)
+ if (tap_state_transition(walker, false) == desired_next_state )
+ ; /* bit within tms_bits at index state_ndx is already zero */
+ else if (tap_state_transition(walker, true) == desired_next_state )
+ tms_bits |= (1<<state_ndx);
+ else
{
- if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count])
- buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
- else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count])
- buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
- else
- {
- LOG_ERROR( "BUG: %s -> %s isn't a valid TAP transition", tap_state_name(
- tap_get_state() ), tap_state_name(cmd->path[state_count]) );
- exit(-1);
- }
-
- tap_set_state(cmd->path[state_count]);
- state_count++;
- num_states--;
+ LOG_ERROR( "BUG: %s -> %s isn't a valid TAP transition",
+ tap_state_name(walker), tap_state_name(desired_next_state) );
+ exit(-1);
}
- BUFFER_ADD = tms_byte;
+ walker = desired_next_state;
}
-
+
+ clock_tms( 0x4b, tms_bits, num_states, 0 );
+
tap_set_end_state(tap_get_state());
}
-void ft2232_add_scan(int ir_scan, enum scan_type type, u8* buffer, int scan_size)
+void ft2232_add_scan(bool ir_scan, enum scan_type type, u8* buffer, int scan_size)
{
int num_bytes = (scan_size + 7) / 8;
int bits_left = scan_size;
int cur_byte = 0;
int last_bit;
- if ( !( ( !ir_scan && (tap_get_state() == TAP_DRSHIFT) )
- || ( ir_scan && (tap_get_state() == TAP_IRSHIFT) ) ) )
+ if ( !ir_scan )
{
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
-
- BUFFER_ADD = 0x6; /* scan 7 bits */
-
- /* TMS data bits */
- if (ir_scan)
+ if (tap_get_state() != TAP_DRSHIFT)
{
- BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_IRSHIFT);
- tap_set_state(TAP_IRSHIFT);
+ move_to_state( TAP_DRSHIFT );
}
- else
+ }
+ else
+ {
+ if (tap_get_state() != TAP_IRSHIFT)
{
- BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_DRSHIFT);
- tap_set_state(TAP_DRSHIFT);
+ move_to_state( TAP_IRSHIFT );
}
- /* LOG_DEBUG("added TMS scan (no read)"); */
}
/* add command for complete bytes */
if (type == SCAN_IO)
{
/* Clock Data Bytes In and Out LSB First */
- BUFFER_ADD = 0x39;
+ buffer_write( 0x39 );
/* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x19;
+ buffer_write( 0x19 );
/* LOG_DEBUG("added TDI bytes (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x28;
+ buffer_write( 0x28 );
/* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
}
thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
num_bytes -= thisrun_bytes;
- BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
- BUFFER_ADD = ( (thisrun_bytes - 1) >> 8 ) & 0xff;
+
+ buffer_write( (u8) (thisrun_bytes - 1) );
+ buffer_write( (u8) ((thisrun_bytes - 1) >> 8) );
if (type != SCAN_IN)
{
/* add complete bytes */
while (thisrun_bytes-- > 0)
{
- BUFFER_ADD = buffer[cur_byte];
- cur_byte++;
+ buffer_write( buffer[cur_byte++] );
bits_left -= 8;
}
}
if (type == SCAN_IO)
{
/* Clock Data Bits In and Out LSB First */
- BUFFER_ADD = 0x3b;
+ buffer_write( 0x3b );
/* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x1b;
+ buffer_write( 0x1b );
/* LOG_DEBUG("added TDI bits (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x2a;
+ buffer_write( 0x2a );
/* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
}
- BUFFER_ADD = bits_left - 2;
+
+ buffer_write( bits_left - 2 );
if (type != SCAN_IN)
- BUFFER_ADD = buffer[cur_byte];
+ buffer_write( buffer[cur_byte] );
}
if ( ( ir_scan && (tap_get_end_state() == TAP_IRSHIFT) )
if (type == SCAN_IO)
{
/* Clock Data Bits In and Out LSB First */
- BUFFER_ADD = 0x3b;
+ buffer_write( 0x3b );
/* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x1b;
+ buffer_write( 0x1b );
/* LOG_DEBUG("added TDI bits (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x2a;
+ buffer_write( 0x2a );
/* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
}
- BUFFER_ADD = 0x0;
- BUFFER_ADD = last_bit;
+ buffer_write( 0x0 );
+ buffer_write( last_bit );
}
else
{
+ int tms_bits;
+ int tms_count;
+ u8 mpsse_cmd;
+
/* move from Shift-IR/DR to end state */
if (type != SCAN_OUT)
{
+ /* We always go to the PAUSE state in two step at the end of an IN or IO scan */
+ /* This must be coordinated with the bit shifts in ft2232_read_scan */
+ tms_bits = 0x01;
+ tms_count = 2;
/* Clock Data to TMS/CS Pin with Read */
- BUFFER_ADD = 0x6b;
+ mpsse_cmd = 0x6b;
/* LOG_DEBUG("added TMS scan (read)"); */
}
else
{
+ tms_bits = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
+ tms_count = tap_get_tms_path_len( tap_get_state(), tap_get_end_state() );
/* Clock Data to TMS/CS Pin (no Read) */
- BUFFER_ADD = 0x4b;
+ mpsse_cmd = 0x4b;
/* LOG_DEBUG("added TMS scan (no read)"); */
}
- BUFFER_ADD = 0x6; /* scan 7 bits */
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() ) | (last_bit << 7);
- tap_set_state( tap_get_end_state() );
+ clock_tms( mpsse_cmd, tms_bits, tms_count, last_bit );
+ }
+
+ if (tap_get_state() != tap_get_end_state())
+ {
+ move_to_state( tap_get_end_state() );
}
}
-int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffer, int scan_size)
+static int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffer, int scan_size)
{
int num_bytes = (scan_size + 7) / 8;
int bits_left = scan_size;
if (tap_get_state() != TAP_DRSHIFT)
{
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
-
- BUFFER_ADD = 0x6; /* scan 7 bits */
-
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_DRSHIFT);
- tap_set_state(TAP_DRSHIFT);
+ move_to_state( TAP_DRSHIFT );
}
if ( ( retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written) ) != ERROR_OK )
if (type == SCAN_IO)
{
/* Clock Data Bytes In and Out LSB First */
- BUFFER_ADD = 0x39;
+ buffer_write( 0x39 );
/* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x19;
+ buffer_write( 0x19 );
/* LOG_DEBUG("added TDI bytes (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x28;
+ buffer_write( 0x28 );
/* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
}
thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
thisrun_read = thisrun_bytes;
num_bytes -= thisrun_bytes;
- BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
- BUFFER_ADD = ( (thisrun_bytes - 1) >> 8 ) & 0xff;
+ buffer_write( (u8) (thisrun_bytes - 1) );
+ buffer_write( (u8) ( (thisrun_bytes - 1) >> 8 ));
if (type != SCAN_IN)
{
/* add complete bytes */
while (thisrun_bytes-- > 0)
{
- BUFFER_ADD = buffer[cur_byte];
+ buffer_write( buffer[cur_byte] );
cur_byte++;
bits_left -= 8;
}
if (type == SCAN_IO)
{
/* Clock Data Bits In and Out LSB First */
- BUFFER_ADD = 0x3b;
+ buffer_write( 0x3b );
/* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x1b;
+ buffer_write( 0x1b );
/* LOG_DEBUG("added TDI bits (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x2a;
+ buffer_write( 0x2a );
/* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
}
- BUFFER_ADD = bits_left - 2;
+ buffer_write( bits_left - 2 );
if (type != SCAN_IN)
- BUFFER_ADD = buffer[cur_byte];
+ buffer_write( buffer[cur_byte] );
if (type != SCAN_OUT)
thisrun_read += 2;
if (type == SCAN_IO)
{
/* Clock Data Bits In and Out LSB First */
- BUFFER_ADD = 0x3b;
+ buffer_write( 0x3b );
/* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
}
else if (type == SCAN_OUT)
{
/* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
- BUFFER_ADD = 0x1b;
+ buffer_write( 0x1b );
/* LOG_DEBUG("added TDI bits (o)"); */
}
else if (type == SCAN_IN)
{
/* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
- BUFFER_ADD = 0x2a;
+ buffer_write( 0x2a );
/* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
}
- BUFFER_ADD = 0x0;
- BUFFER_ADD = last_bit;
+ buffer_write( 0x0 );
+ buffer_write( last_bit );
}
else
{
+ int tms_bits = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
+ int tms_count = tap_get_tms_path_len( tap_get_state(), tap_get_end_state() );
+ u8 mpsse_cmd;
+
/* move from Shift-IR/DR to end state */
if (type != SCAN_OUT)
{
/* Clock Data to TMS/CS Pin with Read */
- BUFFER_ADD = 0x6b;
+ mpsse_cmd = 0x6b;
/* LOG_DEBUG("added TMS scan (read)"); */
}
else
{
/* Clock Data to TMS/CS Pin (no Read) */
- BUFFER_ADD = 0x4b;
+ mpsse_cmd = 0x4b;
/* LOG_DEBUG("added TMS scan (no read)"); */
}
- BUFFER_ADD = 0x6;
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() ) | (last_bit << 7);
- tap_set_state( tap_get_end_state() );
+
+ clock_tms( mpsse_cmd, tms_bits, tms_count, last_bit );
}
if (type != SCAN_OUT)
}
-int ft2232_predict_scan_out(int scan_size, enum scan_type type)
+static int ft2232_predict_scan_out(int scan_size, enum scan_type type)
{
int predicted_size = 3;
int num_bytes = (scan_size - 1) / 8;
if (tap_get_state() != TAP_DRSHIFT)
- predicted_size += 3;
+ predicted_size += get_tms_buffer_requirements( tap_get_tms_path_len( tap_get_state(), TAP_DRSHIFT) );
if (type == SCAN_IN) /* only from device to host */
{
/* complete bytes */
predicted_size += CEIL(num_bytes, 65536) * 3;
+
/* remaining bits - 1 (up to 7) */
predicted_size += ( (scan_size - 1) % 8 ) ? 2 : 0;
}
{
/* complete bytes */
predicted_size += num_bytes + CEIL(num_bytes, 65536) * 3;
+
/* remaining bits -1 (up to 7) */
predicted_size += ( (scan_size - 1) % 8 ) ? 3 : 0;
}
}
-int ft2232_predict_scan_in(int scan_size, enum scan_type type)
+static int ft2232_predict_scan_in(int scan_size, enum scan_type type)
{
int predicted_size = 0;
}
-void usbjtag_reset(int trst, int srst)
+static void usbjtag_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
+ buffer_write( 0x80 );
+ buffer_write( low_output );
+ buffer_write( low_direction );
}
-void jtagkey_reset(int trst, int srst)
+static void jtagkey_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-void olimex_jtag_reset(int trst, int srst)
+static void olimex_jtag_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-void axm0432_jtag_reset(int trst, int srst)
+static void axm0432_jtag_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits low byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-void flyswatter_reset(int trst, int srst)
+static void flyswatter_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
+ buffer_write( 0x80 );
+ buffer_write( low_output );
+ buffer_write( low_direction );
LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
}
-void turtle_reset(int trst, int srst)
+static void turtle_reset(int trst, int srst)
{
trst = trst;
}
/* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
+ buffer_write( 0x80 );
+ buffer_write( low_output );
+ buffer_write( low_direction );
LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
}
-void comstick_reset(int trst, int srst)
+static void comstick_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-void stm32stick_reset(int trst, int srst)
+static void stm32stick_reset(int trst, int srst)
{
if (trst == 1)
{
}
/* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
+ buffer_write( 0x80 );
+ buffer_write( low_output );
+ buffer_write( low_direction );
/* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-void sheevaplug_reset(int trst, int srst)
+static void sheevaplug_reset(int trst, int srst)
{
if (trst == 1)
high_output &= ~nTRST;
high_output |= nSRSTnOE;
/* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ 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);
}
-int ft2232_execute_queue()
+static int ft2232_execute_runtest(jtag_command_t *cmd)
{
- jtag_command_t* cmd = jtag_command_queue; /* currently processed command */
- u8* buffer;
- int scan_size; /* size of IR or DR scan */
- enum scan_type type;
+ int retval;
int i;
- int predicted_size = 0;
- int retval;
+ int predicted_size = 0;
+ retval = ERROR_OK;
- first_unsent = cmd; /* next command that has to be sent */
- require_send = 0;
+ DEBUG_JTAG_IO("runtest %i cycles, end in %s",
+ cmd->cmd.runtest->num_cycles,
+ tap_state_name(cmd->cmd.runtest->end_state));
- /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
- * that wasn't handled by a caller-provided error handler
- */
- retval = ERROR_OK;
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 0;
+ if (tap_get_state() != TAP_IDLE)
+ predicted_size += 3;
+ predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
+ if ( (cmd->cmd.runtest->end_state != TAP_INVALID) && (cmd->cmd.runtest->end_state != TAP_IDLE) )
+ predicted_size += 3;
+ if ( (cmd->cmd.runtest->end_state == TAP_INVALID) && (tap_get_end_state() != TAP_IDLE) )
+ predicted_size += 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ if (tap_get_state() != TAP_IDLE)
+ {
+ move_to_state( TAP_IDLE );
+ require_send = 1;
+ }
+ i = cmd->cmd.runtest->num_cycles;
+ while (i > 0)
+ {
+ /* there are no state transitions in this code, so omit state tracking */
- ft2232_buffer_size = 0;
- ft2232_expect_read = 0;
+ /* command "Clock Data to TMS/CS Pin (no Read)" */
+ buffer_write( 0x4b );
- /* blink, if the current layout has that feature */
- if (layout->blink)
- layout->blink();
+ /* scan 7 bits */
+ buffer_write( (i > 7) ? 6 : (i - 1) );
- while (cmd)
- {
- switch (cmd->type)
- {
- case JTAG_END_STATE:
- if (cmd->cmd.end_state->end_state != -1)
- ft2232_end_state(cmd->cmd.end_state->end_state);
- break;
+ /* TMS data bits */
+ buffer_write( 0x0 );
+ tap_set_state(TAP_IDLE);
- case JTAG_RESET:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
+ i -= (i > 7) ? 7 : i;
+ /* LOG_DEBUG("added TMS scan (no read)"); */
+ }
- if ( (cmd->cmd.reset->trst == 1) || ( cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST) ) )
- {
- tap_set_state(TAP_RESET);
- }
- layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- require_send = 1;
+ if (cmd->cmd.runtest->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.runtest->end_state);
+
+ if ( tap_get_state() != tap_get_end_state() )
+ {
+ move_to_state( tap_get_end_state() );
+ }
+ require_send = 1;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ LOG_DEBUG( "runtest: %i, end in %s", cmd->cmd.runtest->num_cycles, tap_state_name( tap_get_end_state() ) );
#endif
- break;
- case JTAG_RUNTEST:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 0;
- if (tap_get_state() != TAP_IDLE)
- predicted_size += 3;
- predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
- if ( (cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_IDLE) )
- predicted_size += 3;
- if ( (cmd->cmd.runtest->end_state == -1) && (tap_get_end_state() != TAP_IDLE) )
- predicted_size += 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- if (tap_get_state() != TAP_IDLE)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- BUFFER_ADD = 0x6; /* scan 7 bits */
-
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_IDLE);
- tap_set_state(TAP_IDLE);
- require_send = 1;
- }
- i = cmd->cmd.runtest->num_cycles;
- while (i > 0)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
+ return retval;
+}
- /* scan 7 bits */
- BUFFER_ADD = (i > 7) ? 6 : (i - 1);
- /* TMS data bits */
- BUFFER_ADD = 0x0;
- tap_set_state(TAP_IDLE);
- i -= (i > 7) ? 7 : i;
- /* LOG_DEBUG("added TMS scan (no read)"); */
- }
+static int ft2232_execute_statemove(jtag_command_t *cmd)
+{
+ int predicted_size = 0;
+ int retval = ERROR_OK;
- if (cmd->cmd.runtest->end_state != -1)
- ft2232_end_state(cmd->cmd.runtest->end_state);
+ DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
- if ( tap_get_state() != tap_get_end_state() )
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- /* scan 7 bit */
- BUFFER_ADD = 0x6;
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
- tap_set_state( tap_get_end_state() );
- /* LOG_DEBUG("added TMS scan (no read)"); */
- }
- require_send = 1;
-#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "runtest: %i, end in %s", cmd->cmd.runtest->num_cycles, tap_state_name( tap_get_end_state() ) );
-#endif
- break;
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ if (cmd->cmd.statemove->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.statemove->end_state);
- case JTAG_STATEMOVE:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- if (cmd->cmd.statemove->end_state != -1)
- ft2232_end_state(cmd->cmd.statemove->end_state);
+ /* move to end state */
+ if ( tap_get_state() != tap_get_end_state() )
+ {
+ move_to_state( tap_get_end_state() );
+ require_send = 1;
+ }
+
+ return retval;
+}
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
+static int ft2232_execute_pathmove(jtag_command_t *cmd)
+{
+ int predicted_size = 0;
+ int retval = ERROR_OK;
- BUFFER_ADD = 0x6; /* scan 7 bits */
+ tap_state_t* path = cmd->cmd.pathmove->path;
+ int num_states = cmd->cmd.pathmove->num_states;
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
- /* LOG_DEBUG("added TMS scan (no read)"); */
- tap_set_state( tap_get_end_state() );
- require_send = 1;
-#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "statemove: %s", tap_state_name( tap_get_end_state() ) );
-#endif
- break;
+ DEBUG_JTAG_IO("pathmove: %i states, current: %s end: %s", num_states,
+ tap_state_name( tap_get_state() ),
+ tap_state_name( path[num_states-1] )
+ );
- case JTAG_PATHMOVE:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- ft2232_add_pathmove(cmd->cmd.pathmove);
- require_send = 1;
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3 * CEIL(num_states, 7);
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+
+ require_send = 0;
+ first_unsent = cmd;
+ }
+
+ ft2232_add_pathmove( path, num_states );
+ require_send = 1;
+
+ return retval;
+}
+
+
+static int ft2232_execute_scan(jtag_command_t *cmd)
+{
+ u8* buffer;
+ int scan_size; /* size of IR or DR scan */
+ int predicted_size = 0;
+ int retval = ERROR_OK;
+
+ enum scan_type type = jtag_scan_type(cmd->cmd.scan);
+
+ DEBUG_JTAG_IO( "%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN", type );
+
+ scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
+
+ predicted_size = ft2232_predict_scan_out(scan_size, type);
+ if ( (predicted_size + 1) > FT2232_BUFFER_SIZE )
+ {
+ LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
+ /* unsent commands before this */
+ if (first_unsent != cmd)
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+
+ /* current command */
+ if (cmd->cmd.scan->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.scan->end_state);
+ ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
+ require_send = 0;
+ first_unsent = cmd->next;
+ if (buffer)
+ free(buffer);
+ return retval;
+ }
+ else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)",
+ first_unsent,
+ cmd);
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
+ /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
+ if (cmd->cmd.scan->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.scan->end_state);
+ ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
+ require_send = 1;
+ if (buffer)
+ free(buffer);
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "pathmove: %i states, end in %s", cmd->cmd.pathmove->num_states,
- tap_state_name(cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]) );
+ LOG_DEBUG( "%s scan, %i bits, end in %s", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
+ tap_state_name( tap_get_end_state() ) );
#endif
- break;
+ return retval;
+
+}
+
+static int ft2232_execute_reset(jtag_command_t *cmd)
+{
+ int retval;
+ int predicted_size = 0;
+ retval = ERROR_OK;
+
+ DEBUG_JTAG_IO("reset trst: %i srst %i",
+ cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+
+ layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ require_send = 1;
- case JTAG_SCAN:
- scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
- type = jtag_scan_type(cmd->cmd.scan);
- predicted_size = ft2232_predict_scan_out(scan_size, type);
- if ( (predicted_size + 1) > FT2232_BUFFER_SIZE )
- {
- LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
- /* unsent commands before this */
- if (first_unsent != cmd)
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
-
- /* current command */
- if (cmd->cmd.scan->end_state != -1)
- ft2232_end_state(cmd->cmd.scan->end_state);
- ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
- require_send = 0;
- first_unsent = cmd->next;
- if (buffer)
- free(buffer);
- break;
- }
- else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)",
- first_unsent,
- cmd);
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
- /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
- if (cmd->cmd.scan->end_state != -1)
- ft2232_end_state(cmd->cmd.scan->end_state);
- ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
- require_send = 1;
- if (buffer)
- free(buffer);
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "%s scan, %i bits, end in %s", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
- tap_state_name( tap_get_end_state() ) );
+ LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
#endif
- break;
+ return retval;
+}
- case JTAG_SLEEP:
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+static int ft2232_execute_sleep(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
+
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
retval = ERROR_JTAG_QUEUE_FAILED;
- first_unsent = cmd->next;
- jtag_sleep(cmd->cmd.sleep->us);
+ first_unsent = cmd->next;
+ jtag_sleep(cmd->cmd.sleep->us);
#ifdef _DEBUG_JTAG_IO_
LOG_DEBUG( "sleep %i usec while in %s", cmd->cmd.sleep->us, tap_state_name( tap_get_state() ) );
#endif
- break;
- case JTAG_STABLECLOCKS:
+ return retval;
+}
- /* this is only allowed while in a stable state. A check for a stable
- * state was done in jtag_add_clocks()
- */
- if (ft2232_stableclocks(cmd->cmd.stableclocks->num_cycles, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
+static int ft2232_execute_stableclocks(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ /* this is only allowed while in a stable state. A check for a stable
+ * state was done in jtag_add_clocks()
+ */
+ if (ft2232_stableclocks(cmd->cmd.stableclocks->num_cycles, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "clocks %i while in %s", cmd->cmd.stableclocks->num_cycles, tap_state_name( tap_get_state() ) );
+ LOG_DEBUG( "clocks %i while in %s", cmd->cmd.stableclocks->num_cycles, tap_state_name( tap_get_state() ) );
#endif
- break;
- default:
- LOG_ERROR("BUG: unknown JTAG command type encountered");
- exit(-1);
- }
+ return retval;
+}
+static int ft2232_execute_command(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ switch (cmd->type)
+ {
+ 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_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;
+ case JTAG_STABLECLOCKS: retval = ft2232_execute_stableclocks(cmd); break;
+ default:
+ LOG_ERROR("BUG: unknown JTAG command type encountered");
+ exit(-1);
+ }
+ return retval;
+}
+
+static int ft2232_execute_queue()
+{
+ jtag_command_t* cmd = jtag_command_queue; /* currently processed command */
+ int retval;
+
+ first_unsent = cmd; /* next command that has to be sent */
+ require_send = 0;
+
+ /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
+ * that wasn't handled by a caller-provided error handler
+ */
+ retval = ERROR_OK;
+
+ ft2232_buffer_size = 0;
+ ft2232_expect_read = 0;
+
+ /* blink, if the current layout has that feature */
+ if (layout->blink)
+ layout->blink();
+
+ while (cmd)
+ {
+ if (ft2232_execute_command(cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ /* Start reading input before FT2232 TX buffer fills up */
cmd = cmd->next;
+ if (ft2232_expect_read > 256)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ first_unsent = cmd;
+ }
}
if (require_send > 0)
#if BUILD_FT2232_FTD2XX == 1
static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int* try_more)
{
- FT_STATUS status;
- DWORD openex_flags = 0;
- char* openex_string = NULL;
- u8 latency_timer;
+ FT_STATUS status;
+ DWORD openex_flags = 0;
+ char* openex_string = NULL;
+ u8 latency_timer;
LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)", ft2232_layout, vid, pid);
return ERROR_JTAG_INIT_FAILED;
}
- if ( ( status = FT_OpenEx(openex_string, openex_flags, &ftdih) ) != FT_OK )
+ status = FT_OpenEx(openex_string, openex_flags, &ftdih);
+ if( status != FT_OK ){
+ // under Win32, the FTD2XX driver appends an "A" to the end
+ // of the description, if we tried by the desc, then
+ // try by the alternate "A" description.
+ if( openex_string == ft2232_device_desc ){
+ // Try the alternate method.
+ openex_string = ft2232_device_desc_A;
+ status = FT_OpenEx(openex_string, openex_flags, &ftdih);
+ if( status == FT_OK ){
+ // yea, the "alternate" method worked!
+ } else {
+ // drat, give the user a meaningfull message.
+ // telling the use we tried *BOTH* methods.
+ LOG_WARNING("Unable to open FTDI Device tried: '%s' and '%s'\n",
+ ft2232_device_desc,
+ ft2232_device_desc_A );
+ }
+ }
+ }
+
+ if ( status != FT_OK )
{
DWORD num_devices;
if (status == FT_OK)
{
char** desc_array = malloc( sizeof(char*) * (num_devices + 1) );
- int i;
+ u32 i;
for (i = 0; i < num_devices; i++)
desc_array[i] = malloc(64);
if (ftdi_init(&ftdic) < 0)
return ERROR_JTAG_INIT_FAILED;
+ if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
+ {
+ LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
/* context, vendor id, product id */
if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
ft2232_serial) < 0)
return ERROR_JTAG_INIT_FAILED;
}
- if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
- {
- LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
- return ERROR_JTAG_INIT_FAILED;
- }
-
+ /* There is already a reset in ftdi_usb_open_desc, this should be redundant */
if (ftdi_usb_reset(&ftdic) < 0)
{
LOG_ERROR("unable to reset ftdi device");
#endif /* BUILD_FT2232_LIBFTDI == 1 */
-int ft2232_init(void)
+static int ft2232_init(void)
{
u8 buf[1];
int retval;
ft2232_layout_t* cur_layout = ft2232_layouts;
int i;
+ if (tap_get_tms_path_len(TAP_IRPAUSE,TAP_IRPAUSE)==7)
+ {
+ LOG_DEBUG("ft2232 interface using 7 step jtag state transitions");
+ }
+ else
+ {
+ LOG_DEBUG("ft2232 interface using shortest path jtag state transitions");
+
+ }
if ( (ft2232_layout == NULL) || (ft2232_layout[0] == 0) )
{
ft2232_layout = "usbjtag";
}
-int usbjtag_init(void)
+static int usbjtag_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int axm0432_jtag_init(void)
+static int axm0432_jtag_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int jtagkey_init(void)
+static int jtagkey_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int olimex_jtag_init(void)
+static int olimex_jtag_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int flyswatter_init(void)
+static int flyswatter_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int turtle_init(void)
+static int turtle_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int comstick_init(void)
+static int comstick_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int stm32stick_init(void)
+static int stm32stick_init(void)
{
u8 buf[3];
u32 bytes_written;
}
-int sheevaplug_init(void)
+static int sheevaplug_init(void)
{
u8 buf[3];
u32 bytes_written;
if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
{
- LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout");
+ LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout");
return ERROR_JTAG_INIT_FAILED;
}
if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
{
- LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout");
+ LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
+static int cortino_jtag_init(void)
+{
+ u8 buf[3];
+ u32 bytes_written;
+
+ low_output = 0x08;
+ low_direction = 0x1b;
+
+ /* initialize low byte for jtag */
+ buf[0] = 0x80; /* command "set data bits low byte" */
+ buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
+ buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
+ 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 'cortino' layout");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ nTRST = 0x01;
+ nTRSTnOE = 0x00; /* no output enable for nTRST */
+ nSRST = 0x02;
+ nSRSTnOE = 0x00; /* no output enable for nSRST */
+
+ high_output = 0x03;
+ high_direction = 0x03;
+
+ /* initialize high port */
+ buf[0] = 0x82; /* command "set data bits high byte" */
+ buf[1] = high_output;
+ 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 'stm32stick' layout");
return ERROR_JTAG_INIT_FAILED;
}
return ERROR_OK;
}
-void olimex_jtag_blink(void)
+static void olimex_jtag_blink(void)
{
/* Olimex ARM-USB-OCD has a LED connected to ACBUS3
* ACBUS3 is bit 3 of the GPIOH port
high_output |= 0x08;
}
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ buffer_write( 0x82 );
+ buffer_write( high_output );
+ buffer_write( high_direction );
}
-void flyswatter_jtag_blink(void)
+static void flyswatter_jtag_blink(void)
{
/*
* Flyswatter has two LEDs connected to ACBUS2 and ACBUS3
*/
high_output ^= 0x0c;
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ buffer_write( 0x82 );
+ buffer_write( high_output );
+ buffer_write( high_direction );
}
-void turtle_jtag_blink(void)
+static void turtle_jtag_blink(void)
{
/*
* Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
high_output = 0x08;
}
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
+ buffer_write( 0x82 );
+ buffer_write( high_output );
+ buffer_write( high_direction );
}
-int ft2232_quit(void)
+static int ft2232_quit(void)
{
#if BUILD_FT2232_FTD2XX == 1
FT_STATUS status;
status = FT_Close(ftdih);
#elif BUILD_FT2232_LIBFTDI == 1
- ftdi_disable_bitbang(&ftdic);
-
ftdi_usb_close(&ftdic);
ftdi_deinit(&ftdic);
}
-int ft2232_handle_device_desc_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
+static int ft2232_handle_device_desc_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
{
+ char *cp;
+ char buf[200];
if (argc == 1)
{
ft2232_device_desc = strdup(args[0]);
+ cp = strchr( ft2232_device_desc, 0 );
+ // under Win32, the FTD2XX driver appends an "A" to the end
+ // of the description, this examines the given desc
+ // and creates the 'missing' _A or non_A variable.
+ if( (cp[-1] == 'A') && (cp[-2]==' ') ){
+ // it was, so make this the "A" version.
+ ft2232_device_desc_A = ft2232_device_desc;
+ // and *CREATE* the non-A version.
+ strcpy( buf, ft2232_device_desc );
+ cp = strchr( buf, 0 );
+ cp[-2] = 0;
+ ft2232_device_desc = strdup( buf );
+ } else {
+ // <space>A not defined
+ // so create it
+ sprintf( buf, "%s A", ft2232_device_desc );
+ ft2232_device_desc_A = strdup( buf );
+ }
}
else
{
}
-int ft2232_handle_serial_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
+static int ft2232_handle_serial_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
{
if (argc == 1)
{
}
-int ft2232_handle_layout_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
+static int ft2232_handle_layout_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
{
if (argc == 0)
return ERROR_OK;
}
-int ft2232_handle_vid_pid_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
+static int ft2232_handle_vid_pid_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
{
int i;
}
-int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
+static int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char* cmd, char** args, int argc)
{
if (argc == 1)
{
first_unsent = cmd;
}
+ /* there are no state transitions in this code, so omit state tracking */
+
/* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
+ buffer_write( 0x4b );
/* scan 7 bit */
- BUFFER_ADD = bitcount_per_command - 1;
+ buffer_write( bitcount_per_command - 1 );
/* TMS data bits are either all zeros or ones to stay in the current stable state */
- BUFFER_ADD = tms;
+ buffer_write( tms );
require_send = 1;
return retval;
}
+
+
+/* ---------------------------------------------------------------------
+ * Support for IceBear JTAG adapter from Section5:
+ * http://section5.ch/icebear
+ *
+ * Author: Sten, debian@sansys-electronic.com
+ */
+
+/* Icebear pin layout
+ *
+ * ADBUS5 (nEMU) nSRST | 2 1| GND (10k->VCC)
+ * GND GND | 4 3| n.c.
+ * ADBUS3 TMS | 6 5| ADBUS6 VCC
+ * ADBUS0 TCK | 8 7| ADBUS7 (GND)
+ * ADBUS4 nTRST |10 9| ACBUS0 (GND)
+ * ADBUS1 TDI |12 11| ACBUS1 (GND)
+ * ADBUS2 TDO |14 13| GND GND
+ *
+ * ADBUS0 O L TCK ACBUS0 GND
+ * ADBUS1 O L TDI ACBUS1 GND
+ * ADBUS2 I TDO ACBUS2 n.c.
+ * ADBUS3 O H TMS ACBUS3 n.c.
+ * ADBUS4 O H nTRST
+ * ADBUS5 O H nSRST
+ * ADBUS6 - VCC
+ * ADBUS7 - GND
+ */
+static int icebear_jtag_init(void) {
+ u8 buf[3];
+ u32 bytes_written;
+
+ low_direction = 0x0b; /* output: TCK TDI TMS; input: TDO */
+ low_output = 0x08; /* high: TMS; low: TCK TDI */
+ nTRST = 0x10;
+ nSRST = 0x20;
+
+ if ((jtag_reset_config & RESET_TRST_OPEN_DRAIN) != 0) {
+ low_direction &= ~nTRST; /* nTRST high impedance */
+ }
+ else {
+ low_direction |= nTRST;
+ low_output |= nTRST;
+ }
+
+ low_direction |= nSRST;
+ low_output |= nSRST;
+
+ /* initialize low byte for jtag */
+ 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 'IceBear' layout (low)");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ high_output = 0x0;
+ high_direction = 0x00;
+
+
+ /* 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 'IceBear' layout (high)");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
+static void icebear_jtag_reset(int trst, int srst) {
+
+ if (trst == 1) {
+ low_direction |= nTRST;
+ low_output &= ~nTRST;
+ }
+ else if (trst == 0) {
+ if ((jtag_reset_config & RESET_TRST_OPEN_DRAIN) != 0)
+ low_direction &= ~nTRST;
+ else
+ low_output |= nTRST;
+ }
+
+ if (srst == 1) {
+ low_output &= ~nSRST;
+ }
+ else if (srst == 0) {
+ low_output |= nSRST;
+ }
+
+ /* command "set data bits low byte" */
+ buffer_write( 0x80 );
+ buffer_write( low_output );
+ buffer_write( low_direction );
+
+ LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
+}
Code Review / openocd.git / blobdiff