|
- /***************************************************************************
- * Copyright (C) 2004 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * 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 *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #include "config.h"
- #if IS_CYGWIN == 1
- #include "windows.h"
- #undef ERROR
- #endif
-
- /* project specific includes */
- #include "log.h"
- #include "types.h"
- #include "jtag.h"
- #include "configuration.h"
-
- /* system includes */
- #include <string.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <ftd2xx.h>
-
- #include <sys/time.h>
- #include <time.h>
-
- /* enable this to debug io latency
- */
- #if 0
- #define _DEBUG_USB_IO_
- #endif
-
- /* enable this to debug communication
- */
- #if 0
- #define _DEBUG_USB_COMMS_
- #endif
-
- /* enable this to work around ftd2xx deadlock
- */
- #if 0
- #define _FTD2XX_QUEUE_DELAY_
- #endif
-
- int ftd2xx_execute_queue(void);
-
- int ftd2xx_speed(int speed);
- int ftd2xx_register_commands(struct command_context_s *cmd_ctx);
- int ftd2xx_init(void);
- int ftd2xx_quit(void);
-
- int ftd2xx_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int ftd2xx_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int ftd2xx_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
- char *ftd2xx_device_desc = NULL;
- char *ftd2xx_layout = NULL;
- u16 ftd2xx_vid = 0x0403;
- u16 ftd2xx_pid = 0x6010;
-
- typedef struct ftd2xx_layout_s
- {
- char* name;
- int(*init)(void);
- void(*reset)(int trst, int srst);
- } ftd2xx_layout_t;
-
- int usbjtag_init(void);
- int jtagkey_init(void);
- void usbjtag_reset(int trst, int srst);
- void jtagkey_reset(int trst, int srst);
-
- ftd2xx_layout_t ftd2xx_layouts[] =
- {
- {"usbjtag", usbjtag_init, usbjtag_reset},
- {"jtagkey", jtagkey_init, jtagkey_reset},
- {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset},
- {NULL, NULL, NULL},
- };
-
- static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
-
- static ftd2xx_layout_t *layout;
- static u8 low_output = 0x0;
- static u8 low_direction = 0x0;
- static u8 high_output = 0x0;
- static u8 high_direction = 0x0;
- static FT_HANDLE ftdih = NULL;
-
- static u8 *ftd2xx_buffer = NULL;
- static int ftd2xx_buffer_size = 0;
- static int ftd2xx_read_pointer = 0;
- static int ftd2xx_expect_read = 0;
- #define FTD2XX_BUFFER_SIZE 131072
- #define BUFFER_ADD ftd2xx_buffer[ftd2xx_buffer_size++]
- #define BUFFER_READ ftd2xx_buffer[ftd2xx_read_pointer++]
-
- jtag_interface_t ftd2xx_interface =
- {
-
- .name = "ftd2xx",
-
- .execute_queue = ftd2xx_execute_queue,
-
- .support_statemove = 1,
-
- .speed = ftd2xx_speed,
- .register_commands = ftd2xx_register_commands,
- .init = ftd2xx_init,
- .quit = ftd2xx_quit,
- };
-
- int ftd2xx_speed(int speed)
- {
- u8 buf[3];
- FT_STATUS status;
- DWORD bytes_written;
-
- buf[0] = 0x86; /* command "set divisor" */
- buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=1.5MHz, ...*/
- buf[2] = (speed >> 8) & 0xff; /* valueH */
-
- DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
- if (((status = FT_Write(ftdih, buf, 3, &bytes_written)) != FT_OK) || (bytes_written != 3))
- {
- ERROR("couldn't write to ftdi device: %i", status);
- return status;
- }
-
- return ERROR_OK;
- }
-
- int ftd2xx_register_commands(struct command_context_s *cmd_ctx)
- {
- register_command(cmd_ctx, NULL, "ftd2xx_device_desc", ftd2xx_handle_device_desc_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "ftd2xx_layout", ftd2xx_handle_layout_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "ftd2xx_vid_pid", ftd2xx_handle_vid_pid_command,
- COMMAND_CONFIG, NULL);
- return ERROR_OK;
- }
-
- void ftd2xx_end_state(state)
- {
- if (tap_move_map[state] != -1)
- end_state = state;
- else
- {
- ERROR("BUG: %i is not a valid end state", state);
- exit(-1);
- }
- }
-
- void ftd2xx_read_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;
-
- while(num_bytes-- > 1)
- {
- buffer[cur_byte] = BUFFER_READ;
- cur_byte++;
- bits_left -= 8;
- }
-
- buffer[cur_byte] = 0x0;
-
- if (bits_left > 1)
- {
- buffer[cur_byte] = BUFFER_READ >> 1;
- }
-
- buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
-
- }
-
- void ftd2xx_debug_dump_buffer(void)
- {
- int i;
- char line[256];
- char *line_p = line;
-
- for (i = 0; i < ftd2xx_buffer_size; i++)
- {
- line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ftd2xx_buffer[i]);
- if (i % 16 == 15)
- {
- DEBUG("%s", line);
- line_p = line;
- }
- }
-
- if (line_p != line)
- DEBUG("%s", line);
- }
-
- int ftd2xx_send_and_recv(jtag_command_t *first, jtag_command_t *last)
- {
- jtag_command_t *cmd;
- u8 *buffer;
- int scan_size;
- enum scan_type type;
- FT_STATUS status;
- DWORD bytes_written;
- DWORD bytes_read;
-
- #ifdef _DEBUG_USB_IO_
- struct timeval start, inter, inter2, end;
- #endif
-
- #ifdef _DEBUG_USB_COMMS_
- DEBUG("write buffer (size %i):", ftd2xx_buffer_size);
- ftd2xx_debug_dump_buffer();
- #endif
-
- #ifdef _DEBUG_USB_IO_
- gettimeofday(&start, NULL);
- #endif
-
- if ((status = FT_Write(ftdih, ftd2xx_buffer, ftd2xx_buffer_size, &bytes_written)) != FT_OK)
- {
- ERROR("couldn't write to ftdi device: %i", status);
- exit(-1);
- }
-
- #ifdef _DEBUG_USB_IO_
- gettimeofday(&inter, NULL);
- #endif
-
- if (ftd2xx_expect_read)
- {
- int timeout = 100;
- ftd2xx_buffer_size = 0;
-
- #ifdef _FTD2XX_QUEUE_DELAY_
- DWORD inrxqueue = 0;
- while (inrxqueue < ftd2xx_expect_read)
- {
- FT_GetQueueStatus(ftdih, &inrxqueue);
- if (inrxqueue >= ftd2xx_expect_read)
- break;
- usleep(1000);
- };
- #endif
-
- #ifdef _DEBUG_USB_IO_
- gettimeofday(&inter2, NULL);
- #endif
-
- if ((status = FT_Read(ftdih, ftd2xx_buffer, ftd2xx_expect_read, &bytes_read)) != FT_OK)
- {
- ERROR("couldn't read from ftdi device: %i", status);
- exit(-1);
- }
-
- #ifdef _DEBUG_USB_IO_
- gettimeofday(&end, NULL);
-
- INFO("inter: %i.%i, inter2: %i.%i end: %i.%i", inter.tv_sec - start.tv_sec, inter.tv_usec - start.tv_usec,
- inter2.tv_sec - start.tv_sec, inter2.tv_usec - start.tv_usec,
- end.tv_sec - start.tv_sec, end.tv_usec - start.tv_usec);
- #endif
-
-
- ftd2xx_buffer_size = bytes_read;
-
- if (ftd2xx_expect_read != ftd2xx_buffer_size)
- {
- ERROR("ftd2xx_expect_read (%i) != ftd2xx_buffer_size (%i) (%i retries)", ftd2xx_expect_read, ftd2xx_buffer_size, 100 - timeout);
- ftd2xx_debug_dump_buffer();
-
- exit(-1);
- }
-
- #ifdef _DEBUG_USB_COMMS_
- DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ftd2xx_buffer_size);
- ftd2xx_debug_dump_buffer();
- #endif
- }
-
- ftd2xx_expect_read = 0;
- ftd2xx_read_pointer = 0;
-
- cmd = first;
- while (cmd != last)
- {
- switch (cmd->type)
- {
- case JTAG_SCAN:
- type = jtag_scan_type(cmd->cmd.scan);
- if (type != SCAN_OUT)
- {
- scan_size = jtag_scan_size(cmd->cmd.scan);
- buffer = calloc(CEIL(scan_size, 8), 1);
- ftd2xx_read_scan(type, buffer, scan_size);
- jtag_read_buffer(buffer, cmd->cmd.scan);
- free(buffer);
- }
- break;
- default:
- break;
- }
- cmd = cmd->next;
- }
-
- ftd2xx_buffer_size = 0;
-
- return ERROR_OK;
- }
-
- void ftd2xx_add_scan(int 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;
-
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- /* scan 7 bit */
- BUFFER_ADD = 0x6;
- /* TMS data bits */
- if (ir_scan)
- {
- BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
- cur_state = TAP_SI;
- }
- else
- {
- BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
- cur_state = TAP_SD;
- }
- //DEBUG("added TMS scan (no read)");
-
- /* add command for complete bytes */
- if (num_bytes > 1)
- {
- if (type == SCAN_IO)
- {
- /* Clock Data Bytes In and Out LSB First */
- BUFFER_ADD = 0x39;
- //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;
- //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;
- //DEBUG("added TDI bytes (i %i)", num_bytes);
- }
- BUFFER_ADD = (num_bytes-2) & 0xff;
- BUFFER_ADD = (num_bytes >> 8) & 0xff;
- }
- if (type != SCAN_IN)
- {
- /* add complete bytes */
- while(num_bytes-- > 1)
- {
- BUFFER_ADD = buffer[cur_byte];
- cur_byte++;
- bits_left -= 8;
- }
- }
- if (type == SCAN_IN)
- {
- bits_left -= 8 * (num_bytes - 1);
- }
-
- /* the most signifcant bit is scanned during TAP movement */
- if (type != SCAN_IN)
- last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
- else
- last_bit = 0;
-
- /* process remaining bits but the last one */
- if (bits_left > 1)
- {
- if (type == SCAN_IO)
- {
- /* Clock Data Bits In and Out LSB First */
- BUFFER_ADD = 0x3b;
- //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;
- //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;
- //DEBUG("added TDI bits (i %i)", bits_left - 1);
- }
- BUFFER_ADD = bits_left - 2;
- if (type != SCAN_IN)
- BUFFER_ADD = buffer[cur_byte];
- }
-
- /* move from Shift-IR/DR to end state */
- if (type != SCAN_OUT)
- {
- /* Clock Data to TMS/CS Pin with Read */
- BUFFER_ADD = 0x6b;
- //DEBUG("added TMS scan (read)");
- }
- else
- {
- /* Clock Data to TMS/CS Pin (no Read) */
- BUFFER_ADD = 0x4b;
- //DEBUG("added TMS scan (no read)");
- }
- BUFFER_ADD = 0x6;
- BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
- cur_state = end_state;
-
- }
-
- int ftd2xx_predict_scan_out(int scan_size, enum scan_type type)
- {
- int predicted_size = 6;
- if (type == SCAN_IN) /* only from device to host */
- {
- predicted_size += (CEIL(scan_size, 8) > 1) ? 3 : 0;
- predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
- }
- else /* host to device, or bidirectional */
- {
- predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) + 3 - 1) : 0;
- predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
- }
-
- return predicted_size;
- }
-
- int ftd2xx_predict_scan_in(int scan_size, enum scan_type type)
- {
- int predicted_size = 0;
-
- if (type != SCAN_OUT)
- {
- /* complete bytes */
- predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
- /* remaining bits - 1 */
- predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
- /* last bit (from TMS scan) */
- predicted_size += 1;
- }
-
- //DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size);
-
- return predicted_size;
- }
-
- void usbjtag_reset(int trst, int srst)
- {
- if (trst == 1)
- {
- cur_state = TAP_TLR;
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- low_direction |= nTRSTnOE; /* switch to output pin (output is low) */
- else
- low_output &= ~nTRST; /* switch output low */
- }
- else if (trst == 0)
- {
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
- else
- low_output |= nTRST; /* switch output high */
- }
-
- if (srst == 1)
- {
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- low_output &= ~nSRST; /* switch output low */
- else
- low_direction |= nSRSTnOE; /* switch to output pin (output is low) */
- }
- else if (srst == 0)
- {
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- low_output |= nSRST; /* switch output high */
- else
- low_direction &= ~nSRSTnOE; /* switch to input pin (high-Z) */
- }
-
- /* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
-
- }
-
- void jtagkey_reset(int trst, int srst)
- {
- if (trst == 1)
- {
- cur_state = TAP_TLR;
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- high_output &= ~nTRSTnOE;
- else
- high_output &= ~nTRST;
- }
- else if (trst == 0)
- {
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- high_output |= nTRSTnOE;
- else
- high_output |= nTRST;
- }
-
- if (srst == 1)
- {
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- high_output &= ~nSRST;
- else
- high_output &= ~nSRSTnOE;
- }
- else if (srst == 0)
- {
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- high_output |= nSRST;
- else
- high_output |= nSRSTnOE;
- }
-
- /* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
- DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
- }
-
- int ftd2xx_execute_queue()
- {
- jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
- jtag_command_t *first_unsent = cmd; /* next command that has to be sent */
- u8 *buffer;
- int scan_size; /* size of IR or DR scan */
- enum scan_type type;
- int i;
- int predicted_size = 0;
- int require_send = 0;
-
- ftd2xx_buffer_size = 0;
- ftd2xx_expect_read = 0;
-
- while (cmd)
- {
- switch(cmd->type)
- {
- case JTAG_END_STATE:
- if (cmd->cmd.end_state->end_state != -1)
- ftd2xx_end_state(cmd->cmd.end_state->end_state);
- break;
- case JTAG_RESET:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ftd2xx_buffer_size + predicted_size + 1 > FTD2XX_BUFFER_SIZE)
- {
- ftd2xx_send_and_recv(first_unsent, cmd);
- require_send = 0;
- first_unsent = cmd;
- }
-
- layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- require_send = 1;
-
- break;
- case JTAG_RUNTEST:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 0;
- if (cur_state != TAP_RTI)
- 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_RTI))
- predicted_size += 3;
- if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
- predicted_size += 3;
- if (ftd2xx_buffer_size + predicted_size + 1 > FTD2XX_BUFFER_SIZE)
- {
- ftd2xx_send_and_recv(first_unsent, cmd);
- require_send = 0;
- first_unsent = cmd;
- }
- if (cur_state != TAP_RTI)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- /* scan 7 bit */
- BUFFER_ADD = 0x6;
- /* TMS data bits */
- BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
- cur_state = TAP_RTI;
- require_send = 1;
- }
- i = cmd->cmd.runtest->num_cycles;
- while (i > 0)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- /* scan 7 bit */
- BUFFER_ADD = (i > 7) ? 6 : (i - 1);
- /* TMS data bits */
- BUFFER_ADD = 0x0;
- cur_state = TAP_RTI;
- i -= (i > 7) ? 7 : i;
- //DEBUG("added TMS scan (no read)");
- }
- if (cmd->cmd.runtest->end_state != -1)
- ftd2xx_end_state(cmd->cmd.runtest->end_state);
- if (cur_state != 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_MOVE(cur_state, end_state);
- cur_state = end_state;
- //DEBUG("added TMS scan (no read)");
- }
- require_send = 1;
- break;
- case JTAG_STATEMOVE:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ftd2xx_buffer_size + predicted_size + 1 > FTD2XX_BUFFER_SIZE)
- {
- ftd2xx_send_and_recv(first_unsent, cmd);
- require_send = 0;
- first_unsent = cmd;
- }
- if (cmd->cmd.statemove->end_state != -1)
- ftd2xx_end_state(cmd->cmd.statemove->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_MOVE(cur_state, end_state);
- //DEBUG("added TMS scan (no read)");
- cur_state = end_state;
- require_send = 1;
- break;
- case JTAG_SCAN:
- scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
- type = jtag_scan_type(cmd->cmd.scan);
- predicted_size = ftd2xx_predict_scan_out(scan_size, type);
- if (ftd2xx_buffer_size + predicted_size + 1 > FTD2XX_BUFFER_SIZE)
- {
- DEBUG("ftd2xx buffer size reached, sending queued commands (first_unsent: %x, cmd: %x)", first_unsent, cmd);
- ftd2xx_send_and_recv(first_unsent, cmd);
- require_send = 0;
- first_unsent = cmd;
- }
- ftd2xx_expect_read += ftd2xx_predict_scan_in(scan_size, type);
- //DEBUG("new read size: %i", ftd2xx_expect_read);
- if (cmd->cmd.scan->end_state != -1)
- ftd2xx_end_state(cmd->cmd.scan->end_state);
- ftd2xx_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
- require_send = 1;
- if (buffer)
- free(buffer);
- break;
- case JTAG_SLEEP:
- ftd2xx_send_and_recv(first_unsent, cmd);
- first_unsent = cmd->next;
- jtag_sleep(cmd->cmd.sleep->us);
- break;
- default:
- ERROR("BUG: unknown JTAG command type encountered");
- exit(-1);
- }
- cmd = cmd->next;
- }
-
- if (require_send > 0)
- ftd2xx_send_and_recv(first_unsent, cmd);
-
- return ERROR_OK;
- }
-
- int ftd2xx_init(void)
- {
- u8 latency_timer;
- FT_STATUS status;
- DWORD num_devices;
-
- ftd2xx_layout_t *cur_layout = ftd2xx_layouts;
-
- if ((ftd2xx_layout == NULL) || (ftd2xx_layout[0] == 0))
- {
- ftd2xx_layout = "usbjtag";
- WARNING("No ftd2xx layout specified, using default 'usbjtag'");
- }
-
- while (cur_layout->name)
- {
- if (strcmp(cur_layout->name, ftd2xx_layout) == 0)
- {
- layout = cur_layout;
- break;
- }
- cur_layout++;
- }
-
- if (!layout)
- {
- ERROR("No matching layout found for %s", ftd2xx_layout);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- if (ftd2xx_device_desc == NULL)
- {
- WARNING("no ftd2xx device description specified, using default 'Dual RS232'");
- ftd2xx_device_desc = "Dual RS232";
- }
-
- #if IS_CYGWIN != 1
- /* Add JTAGkey Vid/Pid to the linux driver */
- if ((status = FT_SetVIDPID(ftd2xx_vid, ftd2xx_pid)) != FT_OK)
- {
- WARNING("couldn't add %4.4x:%4.4x", ftd2xx_vid, ftd2xx_pid);
- }
- #endif
-
- if ((status = FT_OpenEx(ftd2xx_device_desc, FT_OPEN_BY_DESCRIPTION, &ftdih)) != FT_OK)
- {
- ERROR("unable to open ftdi device: %i", status);
- status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
- if (status == FT_OK)
- {
- char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
- int i;
-
- for (i = 0; i < num_devices; i++)
- desc_array[i] = malloc(64);
- desc_array[num_devices] = NULL;
-
- status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | FT_OPEN_BY_DESCRIPTION);
-
- if (status == FT_OK)
- {
- ERROR("ListDevices: %d\n", num_devices);
- for (i = 0; i < num_devices; i++)
- ERROR("%i: %s", i, desc_array[i]);
- }
-
- for (i = 0; i < num_devices; i++)
- free(desc_array[i]);
- free(desc_array);
- }
- else
- {
- printf("ListDevices: NONE\n");
- }
- return ERROR_JTAG_INIT_FAILED;
- }
-
- if ((status = FT_SetLatencyTimer(ftdih, 2)) != FT_OK)
- {
- ERROR("unable to set latency timer: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
- {
- ERROR("unable to get latency timer: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
- else
- {
- DEBUG("current latency timer: %i", latency_timer);
- }
-
- if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
- {
- ERROR("unable to enable bit i/o mode: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- ftd2xx_buffer_size = 0;
- ftd2xx_buffer = malloc(FTD2XX_BUFFER_SIZE);
-
- if (layout->init() != ERROR_OK)
- return ERROR_JTAG_INIT_FAILED;
-
- ftd2xx_speed(jtag_speed);
-
- if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
- {
- ERROR("error purging ftd2xx device: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int usbjtag_init(void)
- {
- u8 buf[3];
- FT_STATUS status;
- DWORD bytes_written;
-
- low_output = 0x08;
- low_direction = 0x0b;
-
- nTRST = 0x10;
- nTRSTnOE = 0x10;
- nSRST = 0x40;
- nSRSTnOE = 0x40;
-
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- {
- low_direction &= ~nTRSTnOE; /* nTRST input */
- low_output &= ~nTRST; /* nTRST = 0 */
- }
- else
- {
- low_direction |= nTRSTnOE; /* nTRST output */
- low_output |= nTRST; /* nTRST = 1 */
- }
-
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- {
- low_direction |= nSRSTnOE; /* nSRST output */
- low_output |= nSRST; /* nSRST = 1 */
- }
- else
- {
- low_direction &= ~nSRSTnOE; /* nSRST input */
- low_output &= ~nSRST; /* nSRST = 0 */
- }
-
- /* 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, xRST high) */
- buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
- DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
-
- if (((FT_Write(ftdih, buf, 3, &bytes_written)) != FT_OK) || (bytes_written != 3))
- {
- ERROR("couldn't write to ftdi device: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int jtagkey_init(void)
- {
- u8 buf[3];
- FT_STATUS status;
- DWORD 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 */
- DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
-
- if (((FT_Write(ftdih, buf, 3, &bytes_written)) != FT_OK) || (bytes_written != 3))
- {
- ERROR("couldn't write to ftdi device: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- if (strcmp(layout->name, "jtagkey") == 0)
- {
- nTRST = 0x01;
- nTRSTnOE = 0x4;
- nSRST = 0x02;
- nSRSTnOE = 0x08;
- }
- else if (strcmp(layout->name, "jtagkey_prototype_v1") == 0)
- {
- nTRST = 0x02;
- nTRSTnOE = 0x1;
- nSRST = 0x08;
- nSRSTnOE = 0x04;
- }
- else
- {
- ERROR("BUG: jtagkey_init called for non jtagkey layout");
- exit(-1);
- }
-
- high_output = 0x0;
- high_direction = 0x0f;
-
- if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
- {
- high_output |= nTRSTnOE;
- high_output &= ~nTRST;
- }
- else
- {
- high_output &= ~nTRSTnOE;
- high_output |= nTRST;
- }
-
- if (jtag_reset_config & RESET_SRST_PUSH_PULL)
- {
- high_output &= ~nSRSTnOE;
- high_output |= nSRST;
- }
- else
- {
- high_output |= nSRSTnOE;
- high_output &= ~nSRST;
- }
-
- /* initialize high port */
- buf[0] = 0x82; /* command "set data bits low byte" */
- buf[1] = high_output; /* value */
- buf[2] = high_direction; /* all outputs (xRST and xRSTnOE) */
- DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
-
- if (((FT_Write(ftdih, buf, 3, &bytes_written)) != FT_OK) || (bytes_written != 3))
- {
- ERROR("couldn't write to ftdi device: %i", status);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int ftd2xx_quit(void)
- {
- FT_STATUS status;
-
- status = FT_Close(ftdih);
-
- free(ftd2xx_buffer);
-
- return ERROR_OK;
- }
-
- int ftd2xx_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc == 1)
- {
- ftd2xx_device_desc = strdup(args[0]);
- }
- else
- {
- ERROR("expected exactly one argument to ftd2xx_device_desc <description>");
- }
-
- return ERROR_OK;
- }
-
- int ftd2xx_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc == 0)
- return ERROR_OK;
-
- ftd2xx_layout = malloc(strlen(args[0]) + 1);
- strcpy(ftd2xx_layout, args[0]);
-
- return ERROR_OK;
- }
-
- int ftd2xx_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc >= 2)
- {
- ftd2xx_vid = strtol(args[0], NULL, 0);
- ftd2xx_pid = strtol(args[1], NULL, 0);
- }
- else
- {
- WARNING("incomplete ftd2xx_vid_pid configuration directive");
- }
-
- return ERROR_OK;
- }
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