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Diffstat (limited to 'src/jtag/ftdi2232.c')
| -rw-r--r-- | src/jtag/ftdi2232.c | 633 |
1 files changed, 0 insertions, 633 deletions
diff --git a/src/jtag/ftdi2232.c b/src/jtag/ftdi2232.c deleted file mode 100644 index c90cc2f9..00000000 --- a/src/jtag/ftdi2232.c +++ /dev/null @@ -1,633 +0,0 @@ -/*************************************************************************** - * 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. * - ***************************************************************************/ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -/* project specific includes */ -#include "log.h" -#include "types.h" -#include "jtag.h" -#include "configuration.h" -#include "command.h" - -/* system includes */ -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <usb.h> -#include <ftdi.h> - -#include <sys/time.h> -#include <time.h> - -/* enable this to debug io latency - */ -#if 0 -#define _DEBUG_USB_IO_ -#endif - -int ftdi2232_execute_queue(void); - -int ftdi2232_speed(int speed); -int ftdi2232_register_commands(struct command_context_s *cmd_ctx); -int ftdi2232_init(void); -int ftdi2232_quit(void); - -enum { FTDI2232_TRST = 0x10, FTDI2232_SRST = 0x40 }; -static u8 discrete_output = 0x0 | FTDI2232_TRST | FTDI2232_SRST; -static struct ftdi_context ftdic; - -static u8 *ftdi2232_buffer = NULL; -static int ftdi2232_buffer_size = 0; -static int ftdi2232_read_pointer = 0; -static int ftdi2232_expect_read = 0; -#define FTDI2232_BUFFER_SIZE 131072 -#define BUFFER_ADD ftdi2232_buffer[ftdi2232_buffer_size++] -#define BUFFER_READ ftdi2232_buffer[ftdi2232_read_pointer++] - -#define FTDI2232_SAVE_SIZE 1024 - -int ftdi2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); - -static u16 ftdi2232_vid = 0x0403; -static u16 ftdi2232_pid = 0x6010; - -jtag_interface_t ftdi2232_interface = -{ - - .name = "ftdi2232", - - .execute_queue = ftdi2232_execute_queue, - - .support_statemove = 1, - - .speed = ftdi2232_speed, - .register_commands = ftdi2232_register_commands, - .init = ftdi2232_init, - .quit = ftdi2232_quit, -}; - -int ftdi2232_speed(int speed) -{ - u8 buf[3]; - - 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]); - ftdi_write_data(&ftdic, buf, 3); - - return ERROR_OK; -} - -int ftdi2232_register_commands(struct command_context_s *cmd_ctx) -{ - register_command(cmd_ctx, NULL, "ftdi2232_vid_pid", ftdi2232_handle_vid_pid_command, - COMMAND_CONFIG, NULL); - - return ERROR_OK; -} - -void ftdi2232_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 ftdi2232_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 ftdi2232_debug_dump_buffer(void) -{ - int i; - for (i = 0; i < ftdi2232_buffer_size; i++) - { - printf("%2.2x ", ftdi2232_buffer[i]); - if (i % 16 == 15) - printf("\n"); - } - printf("\n"); - fflush(stdout); -} - -int ftdi2232_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; - - BUFFER_ADD = 0x87; /* send immediate command */ - - if (ftdi2232_buffer_size > FTDI2232_SAVE_SIZE) - { - ERROR("BUG: ftdi2232_buffer grew beyond %i byte (%i) - this is going to fail", FTDI2232_SAVE_SIZE, ftdi2232_buffer_size); - } - -#ifdef _DEBUG_USB_IO_ - DEBUG("write buffer (size %i):", ftdi2232_buffer_size); - ftdi2232_debug_dump_buffer(); -#endif - - if ((retval = ftdi_write_data(&ftdic, ftdi2232_buffer, ftdi2232_buffer_size)) < 0) - { - ERROR("ftdi_write_data returned %i", retval); - exit(-1); - } - - if (ftdi2232_expect_read) - { - int timeout = 100; - ftdi2232_buffer_size = 0; - - while ((ftdi2232_buffer_size < ftdi2232_expect_read) && timeout) - { - ftdi2232_buffer_size += ftdi_read_data(&ftdic, ftdi2232_buffer + ftdi2232_buffer_size, FTDI2232_BUFFER_SIZE - ftdi2232_buffer_size); - timeout--; - } - - if (ftdi2232_expect_read != ftdi2232_buffer_size) - { - ERROR("ftdi2232_expect_read (%i) != ftdi2232_buffer_size (%i) (%i retries)", ftdi2232_expect_read, ftdi2232_buffer_size, 100 - timeout); - ftdi2232_debug_dump_buffer(); - - exit(-1); - } - -#ifdef _DEBUG_USB_IO_ - DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ftdi2232_buffer_size); - ftdi2232_debug_dump_buffer(); -#endif - } - - ftdi2232_expect_read = 0; - ftdi2232_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); - ftdi2232_read_scan(type, buffer, scan_size); - jtag_read_buffer(buffer, cmd->cmd.scan); - free(buffer); - } - break; - default: - break; - } - cmd = cmd->next; - } - - ftdi2232_buffer_size = 0; - - return ERROR_OK; -} - -void ftdi2232_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-2) >> 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 ftdi2232_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 ftdi2232_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; -} - -int ftdi2232_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; - - ftdi2232_buffer_size = 0; - ftdi2232_expect_read = 0; - - while (cmd) - { - switch(cmd->type) - { - case JTAG_END_STATE: - if (cmd->cmd.end_state->end_state != -1) - ftdi2232_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 (ftdi2232_buffer_size + predicted_size + 1 > FTDI2232_SAVE_SIZE) - { - ftdi2232_send_and_recv(first_unsent, cmd); - require_send = 0; - first_unsent = cmd; - } - - if (cmd->cmd.reset->trst == 1) - { - cur_state = TAP_TLR; - discrete_output &= ~FTDI2232_TRST; - } - else if (cmd->cmd.reset->trst == 0) - { - discrete_output |= FTDI2232_TRST; - } - - if (cmd->cmd.reset->srst == 1) - discrete_output &= ~FTDI2232_SRST; - else if (cmd->cmd.reset->srst == 0) - discrete_output |= FTDI2232_SRST; - /* command "set data bits low byte" */ - BUFFER_ADD = 0x80; - /* value (TMS=1,TCK=0, TDI=0, TRST/SRST */ - BUFFER_ADD = 0x08 | discrete_output; - /* dir (output=1), TCK/TDI/TMS=out, TDO=in, TRST/SRST=out */ - BUFFER_ADD = 0x0b | FTDI2232_SRST | FTDI2232_TRST; - 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 (ftdi2232_buffer_size + predicted_size + 1 > FTDI2232_SAVE_SIZE) - { - ftdi2232_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) - ftdi2232_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 (ftdi2232_buffer_size + predicted_size + 1 > FTDI2232_SAVE_SIZE) - { - ftdi2232_send_and_recv(first_unsent, cmd); - require_send = 0; - first_unsent = cmd; - } - if (cmd->cmd.statemove->end_state != -1) - ftdi2232_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 = ftdi2232_predict_scan_out(scan_size, type); - if (ftdi2232_buffer_size + predicted_size + 1 > FTDI2232_SAVE_SIZE) - { - ftdi2232_send_and_recv(first_unsent, cmd); - require_send = 0; - first_unsent = cmd; - } - ftdi2232_expect_read += ftdi2232_predict_scan_in(scan_size, type); - //DEBUG("new read size: %i", ftdi2232_expect_read); - if (cmd->cmd.scan->end_state != -1) - ftdi2232_end_state(cmd->cmd.scan->end_state); - ftdi2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size); - require_send = 1; - if (buffer) - free(buffer); - break; - case JTAG_SLEEP: - jtag_sleep(cmd->cmd.sleep->us); - break; - default: - ERROR("BUG: unknown JTAG command type encountered"); - exit(-1); - } - cmd = cmd->next; - } - - if (require_send > 0) - ftdi2232_send_and_recv(first_unsent, cmd); - - return ERROR_OK; -} - -int ftdi2232_init(void) -{ - if (ftdi_init(&ftdic) < 0) - return ERROR_JTAG_INIT_FAILED; - - /* context, vendor id, product id */ - if (ftdi_usb_open(&ftdic, ftdi2232_vid, ftdi2232_pid) < 0) - { - ERROR("unable to open ftdi device: %s", ftdic.error_str); - return ERROR_JTAG_INIT_FAILED; - } - - if (ftdi_usb_reset(&ftdic) < 0) - { - ERROR("unable to reset ftdi device"); - return ERROR_JTAG_INIT_FAILED; - } - - if (ftdi_set_latency_timer(&ftdic, 1) < 0) - { - ERROR("unable to set latency timer"); - return ERROR_JTAG_INIT_FAILED; - } - - ftdi2232_buffer_size = 0; - ftdi2232_buffer = malloc(FTDI2232_BUFFER_SIZE); - - ftdic.bitbang_mode = 0; /* Reset controller */ - ftdi_enable_bitbang(&ftdic, 0x0b | FTDI2232_SRST | FTDI2232_TRST); /* ctx, i/o mask (out=1, in=0) */ - - ftdic.bitbang_mode = 2; /* MPSSE mode */ - ftdi_enable_bitbang(&ftdic, 0x0b | FTDI2232_SRST | FTDI2232_TRST); /* ctx, i/o mask (out=1, in=0) */ - - if (ftdi_usb_purge_buffers(&ftdic) < 0) - { - ERROR("ftdi_purge_buffers: %s", ftdic.error_str); - return ERROR_JTAG_INIT_FAILED; - } - - /* initialize low byte for jtag */ - BUFFER_ADD = 0x80; /* command "set data bits low byte" */ - BUFFER_ADD = 0x08 | FTDI2232_SRST | FTDI2232_TRST; /* value (TMS=1,TCK=0, TDI=0, xRST high) */ - BUFFER_ADD = 0x0b | FTDI2232_SRST | FTDI2232_TRST; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */ - BUFFER_ADD = 0x85; /* command "Disconnect TDI/DO to TDO/DI for Loopback" */ - ftdi2232_debug_dump_buffer(); - if (ftdi_write_data(&ftdic, ftdi2232_buffer, ftdi2232_buffer_size) != 4) - return ERROR_JTAG_INIT_FAILED; - - ftdi2232_speed(jtag_speed); - - return ERROR_OK; -} - -int ftdi2232_quit(void) -{ - ftdi_disable_bitbang(&ftdic); - - ftdi_usb_close(&ftdic); - - ftdi_deinit(&ftdic); - - free(ftdi2232_buffer); - - return ERROR_OK; -} - -int ftdi2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - if (argc >= 2) - { - ftdi2232_vid = strtol(args[0], NULL, 0); - ftdi2232_pid = strtol(args[1], NULL, 0); - } - else - { - WARNING("incomplete ftdi2232_vid_pid configuration directive"); - } - - return ERROR_OK; -} |