X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fjtag%2Fft2232.c;h=779923ec1d9941e5a51d0ed7f1af2e48bc4b687e;hb=9557d8a9b1dba8aa5d3d341090731b51fabc7ee0;hp=62b15d656d8a916c1ab584aae9c44b025c6352ba;hpb=97a5e7a60899823fd34bd292973072fe8fdd61d0;p=openocd.git diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c index 62b15d656d..779923ec1d 100644 --- a/src/jtag/ft2232.c +++ b/src/jtag/ft2232.c @@ -5,6 +5,9 @@ * Copyright (C) 2008 by Spencer Oliver * * spen@spen-soft.co.uk * * * +* Copyright (C) 2009 by SoftPLC Corporation. http://softplc.com * +* Dick Hollenbeck * +* * * 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 * @@ -26,6 +29,9 @@ * 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 */ @@ -33,23 +39,21 @@ #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 -#include -#include +#if IS_CYGWIN == 1 +#include +#endif + +#include + +#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 @@ -58,6 +62,9 @@ #include #endif +/* max TCK for the high speed devices 30000 kHz */ +#define FTDI_2232H_4232H_MAX_TCK 30000 + static int ft2232_execute_queue(void); static int ft2232_speed(int speed); @@ -85,11 +92,13 @@ static int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd); -static char * ft2232_device_desc_A = NULL; -static char* ft2232_device_desc = NULL; -static char* ft2232_serial = NULL; -static char* ft2232_layout = NULL; -static 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 */ @@ -112,8 +121,10 @@ 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 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 */ static void usbjtag_reset(int trst, int srst); @@ -125,13 +136,14 @@ 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 */ 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 }, @@ -145,7 +157,9 @@ ft2232_layout_t ft2232_layouts[] = { "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 }, + { "icebear", icebear_jtag_init, icebear_jtag_reset, NULL }, + { "cortino", cortino_jtag_init, comstick_reset, NULL }, { NULL, NULL, NULL, NULL }, }; @@ -158,7 +172,7 @@ static u8 high_output = 0x0; 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 @@ -167,14 +181,142 @@ static struct ftdi_context ftdic; 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<> 8) & 0xff; /* valueH */ @@ -296,7 +438,7 @@ static int ft2232_speed_div(int speed, int* khz) * 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; } @@ -306,7 +448,7 @@ 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; } @@ -317,9 +459,9 @@ static int ft2232_khz(int khz, int* jtag_speed) * 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; @@ -365,12 +507,11 @@ void ft2232_end_state(tap_state_t state) 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); } } - static void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size) { int num_bytes = (scan_size + 7) / 8; @@ -379,19 +520,19 @@ static void ft2232_read_scan(enum scan_type type, u8* buffer, int 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); } @@ -423,8 +564,8 @@ static int ft2232_send_and_recv(jtag_command_t* first, jtag_command_t* last) 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; @@ -535,77 +676,68 @@ static int ft2232_send_and_recv(jtag_command_t* first, jtag_command_t* last) } -static 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 tms_bits = 0; + int state_ndx; + tap_state_t walker = tap_get_state(); - int bit_count = 0; - - int num_states_batch = num_states > 7 ? 7 : num_states; - - /* command "Clock Data to TMS/CS Pin (no Read)" */ - BUFFER_ADD = 0x4b; + assert( (unsigned) num_states <= 32u ); /* tms_bits only holds 32 bits */ - /* 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<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 */ @@ -615,34 +747,34 @@ void ft2232_add_scan(int ir_scan, enum scan_type type, u8* buffer, int scan_size 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; } } @@ -664,24 +796,25 @@ void ft2232_add_scan(int ir_scan, enum scan_type type, u8* buffer, int scan_size 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) ) @@ -690,43 +823,56 @@ void ft2232_add_scan(int ir_scan, enum scan_type type, u8* buffer, int scan_size 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() ); } } @@ -752,14 +898,7 @@ static int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffe 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 ) @@ -778,34 +917,34 @@ static int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffe 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; } @@ -849,24 +988,24 @@ static int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffe 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; @@ -877,42 +1016,45 @@ static int ft2232_large_scan(scan_command_t* cmd, enum scan_type type, u8* buffe 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) @@ -947,12 +1089,13 @@ static int ft2232_predict_scan_out(int scan_size, enum scan_type type) 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; } @@ -960,6 +1103,7 @@ static int ft2232_predict_scan_out(int scan_size, enum scan_type type) { /* 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; } @@ -1023,9 +1167,9 @@ static void usbjtag_reset(int trst, int srst) } /* 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 ); } @@ -1062,9 +1206,9 @@ static void jtagkey_reset(int trst, int srst) } /* 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); } @@ -1097,9 +1241,9 @@ static void olimex_jtag_reset(int trst, int srst) } /* 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); } @@ -1127,9 +1271,9 @@ static void axm0432_jtag_reset(int trst, int srst) } /* 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); } @@ -1156,9 +1300,9 @@ static void flyswatter_reset(int trst, int srst) } /* 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); } @@ -1177,9 +1321,9 @@ static void turtle_reset(int trst, int srst) } /* 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); } @@ -1205,9 +1349,9 @@ static void comstick_reset(int trst, int srst) } /* 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); } @@ -1234,14 +1378,14 @@ static void stm32stick_reset(int trst, int srst) } /* 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); } @@ -1261,253 +1405,314 @@ static void sheevaplug_reset(int trst, int srst) 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); } -static 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 != TAP_INVALID) - 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 != 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) - { - /* 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 != TAP_INVALID) - 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 != TAP_INVALID) - 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 != 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); - 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 != 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( "%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) @@ -1521,10 +1726,10 @@ static int ft2232_execute_queue() #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); @@ -1683,6 +1888,12 @@ static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int* try_more) 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) @@ -1696,12 +1907,7 @@ static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int* try_more) 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"); @@ -1752,6 +1958,15 @@ static int ft2232_init(void) 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"; @@ -2312,7 +2527,7 @@ static int sheevaplug_init(void) 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; } @@ -2340,7 +2555,50 @@ static int sheevaplug_init(void) 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; } @@ -2363,9 +2621,9 @@ static void olimex_jtag_blink(void) 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 ); } @@ -2376,9 +2634,9 @@ static void flyswatter_jtag_blink(void) */ 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 ); } @@ -2396,9 +2654,9 @@ static void turtle_jtag_blink(void) 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 ); } @@ -2409,8 +2667,6 @@ static int ft2232_quit(void) status = FT_Close(ftdih); #elif BUILD_FT2232_LIBFTDI == 1 - ftdi_disable_bitbang(&ftdic); - ftdi_usb_close(&ftdic); ftdi_deinit(&ftdic); @@ -2556,14 +2812,16 @@ static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd) 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; @@ -2572,3 +2830,107 @@ static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd) 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); +}