511 lines
14 KiB
C
511 lines
14 KiB
C
/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "config.h"
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#include "log.h"
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#include "jtag.h"
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/* system includes */
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#include <sys/io.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <time.h>
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#if PARPORT_USE_PPDEV == 1
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#include <linux/parport.h>
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#include <linux/ppdev.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#endif
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/* configuration */
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unsigned long amt_jtagaccel_port;
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/* interface variables
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*/
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static u8 aw_control_rst = 0x00;
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static u8 aw_control_fsm = 0x10;
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static u8 aw_control_baudrate = 0x20;
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static int rtck_enabled = 0;
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#if PARPORT_USE_PPDEV == 1
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static int device_handle;
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int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
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int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
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#define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
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#define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
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#define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
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#define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
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#else
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#define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
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#define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
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#define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
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#define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
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#endif
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int amt_jtagaccel_execute_queue(void);
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int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
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int amt_jtagaccel_speed(int speed);
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int amt_jtagaccel_init(void);
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int amt_jtagaccel_quit(void);
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int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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/* tap_move[i][j]: tap movement command to go from state i to state j
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* 0: Test-Logic-Reset
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* 1: Run-Test/Idle
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* 2: Shift-DR
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* 3: Pause-DR
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* 4: Shift-IR
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* 5: Pause-IR
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*/
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u8 amt_jtagaccel_tap_move[6][6][2] =
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{
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/* TLR RTI SD PD SI PI */
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{{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* TLR */
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{{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* RTI */
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{{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* SD */
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{{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* PD */
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{{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* SI */
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{{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* PI */
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};
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jtag_interface_t amt_jtagaccel_interface =
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{
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.name = "amt_jtagaccel",
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.execute_queue = amt_jtagaccel_execute_queue,
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.support_statemove = 0,
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.speed = amt_jtagaccel_speed,
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.register_commands = amt_jtagaccel_register_commands,
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.init = amt_jtagaccel_init,
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.quit = amt_jtagaccel_quit,
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};
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int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx)
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{
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register_command(cmd_ctx, NULL, "parport_port", amt_jtagaccel_handle_parport_port_command,
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COMMAND_CONFIG, NULL);
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register_command(cmd_ctx, NULL, "rtck", amt_jtagaccel_handle_rtck_command,
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COMMAND_CONFIG, NULL);
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return ERROR_OK;
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}
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void amt_jtagaccel_reset(int trst, int srst)
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{
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if (trst == 1)
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aw_control_rst |= 0x4;
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else if (trst == 0)
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aw_control_rst &= ~0x4;
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if (srst == 1)
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aw_control_rst |= 0x1;
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else if (srst == 0)
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aw_control_rst &= ~0x1;
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AMT_AW(aw_control_rst);
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}
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int amt_jtagaccel_speed(int speed)
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{
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aw_control_baudrate &= 0xf0;
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aw_control_baudrate |= speed & 0x0f;
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AMT_AW(aw_control_baudrate);
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return ERROR_OK;
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}
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void amt_jtagaccel_end_state(state)
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{
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if (tap_move_map[state] != -1)
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end_state = state;
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else
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{
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ERROR("BUG: %i is not a valid end state", state);
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exit(-1);
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}
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}
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void amt_wait_scan_busy()
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{
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int timeout = 4096;
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u8 ar_status;
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AMT_AR(ar_status);
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while (((ar_status) & 0x80) && (timeout-- > 0))
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AMT_AR(ar_status);
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if (ar_status & 0x80)
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{
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ERROR("amt_jtagaccel timed out while waiting for end of scan, rtck was %s", (rtck_enabled) ? "enabled" : "disabled");
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exit(-1);
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}
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}
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void amt_jtagaccel_state_move(void)
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{
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u8 aw_scan_tms_5;
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u8 tms_scan[2];
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tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
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tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
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aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
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AMT_AW(aw_scan_tms_5);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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if (tms_scan[0] & 0x80)
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{
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aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
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AMT_AW(aw_scan_tms_5);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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}
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cur_state = end_state;
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}
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void amt_jtagaccel_runtest(int num_cycles)
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{
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int i = 0;
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u8 aw_scan_tms_5;
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u8 aw_scan_tms_1to4;
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enum tap_state saved_end_state = end_state;
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/* only do a state_move when we're not already in RTI */
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if (cur_state != TAP_RTI)
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{
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amt_jtagaccel_end_state(TAP_RTI);
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amt_jtagaccel_state_move();
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}
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while (num_cycles - i >= 5)
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{
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aw_scan_tms_5 = 0x40;
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AMT_AW(aw_scan_tms_5);
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i += 5;
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}
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if (num_cycles - i > 0)
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{
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aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
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AMT_AW(aw_scan_tms_1to4);
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}
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amt_jtagaccel_end_state(saved_end_state);
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if (cur_state != end_state)
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amt_jtagaccel_state_move();
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}
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void amt_jtagaccel_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
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{
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int bits_left = scan_size;
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int bit_count = 0;
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enum tap_state saved_end_state = end_state;
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u8 aw_tdi_option;
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u8 dw_tdi_scan;
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u8 dr_tdo;
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u8 aw_tms_scan;
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u8 tms_scan[2];
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if (ir_scan)
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amt_jtagaccel_end_state(TAP_SI);
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else
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amt_jtagaccel_end_state(TAP_SD);
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amt_jtagaccel_state_move();
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amt_jtagaccel_end_state(saved_end_state);
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/* handle unaligned bits at the beginning */
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if ((scan_size - 1) % 8)
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{
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aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
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AMT_AW(aw_tdi_option);
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dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
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AMT_DW(dw_tdi_scan);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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if ((type == SCAN_IN) || (type == SCAN_IO))
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{
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AMT_DR(dr_tdo);
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dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
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buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
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}
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bit_count += (scan_size - 1) % 8;
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bits_left -= (scan_size - 1) % 8;
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}
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while (bits_left - 1 >= 8)
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{
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dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
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AMT_DW(dw_tdi_scan);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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if ((type == SCAN_IN) || (type == SCAN_IO))
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{
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AMT_DR(dr_tdo);
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buf_set_u32(buffer, bit_count, 8, dr_tdo);
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}
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bit_count += 8;
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bits_left -= 8;
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}
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tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
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tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
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aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
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AMT_AW(aw_tms_scan);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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if ((type == SCAN_IN) || (type == SCAN_IO))
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{
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AMT_DR(dr_tdo);
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dr_tdo = dr_tdo >> 7;
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buf_set_u32(buffer, bit_count, 1, dr_tdo);
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}
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if (tms_scan[0] & 0x80)
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{
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aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
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AMT_AW(aw_tms_scan);
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if (jtag_speed > 3 || rtck_enabled)
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amt_wait_scan_busy();
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}
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cur_state = end_state;
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}
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int amt_jtagaccel_execute_queue(void)
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{
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jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
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int scan_size;
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enum scan_type type;
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u8 *buffer;
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while (cmd)
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{
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switch (cmd->type)
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{
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case JTAG_END_STATE:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
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#endif
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if (cmd->cmd.end_state->end_state != -1)
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amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
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break;
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case JTAG_RESET:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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#endif
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if (cmd->cmd.reset->trst == 1)
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{
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cur_state = TAP_TLR;
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}
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amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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break;
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case JTAG_RUNTEST:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
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#endif
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if (cmd->cmd.runtest->end_state != -1)
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amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
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amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
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break;
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case JTAG_STATEMOVE:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
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#endif
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if (cmd->cmd.statemove->end_state != -1)
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amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
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amt_jtagaccel_state_move();
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break;
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case JTAG_SCAN:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("scan end in %i", cmd->cmd.scan->end_state);
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#endif
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if (cmd->cmd.scan->end_state != -1)
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amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
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scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
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type = jtag_scan_type(cmd->cmd.scan);
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amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
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if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
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return ERROR_JTAG_QUEUE_FAILED;
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if (buffer)
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free(buffer);
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break;
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case JTAG_SLEEP:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("sleep", cmd->cmd.sleep->us);
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#endif
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jtag_sleep(cmd->cmd.sleep->us);
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break;
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default:
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ERROR("BUG: unknown JTAG command type encountered");
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exit(-1);
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}
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cmd = cmd->next;
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}
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return ERROR_OK;
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}
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int amt_jtagaccel_init(void)
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{
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#if PARPORT_USE_PPDEV == 1
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char buffer[256];
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int i = 0;
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u8 control_port;
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#else
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u8 status_port;
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#endif
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#if PARPORT_USE_PPDEV == 1
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if (device_handle > 0)
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{
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ERROR("device is already opened");
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return ERROR_JTAG_INIT_FAILED;
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}
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snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
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device_handle = open(buffer, O_RDWR);
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if (device_handle < 0)
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{
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ERROR("cannot open device. check it exists and that user read and write rights are set");
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return ERROR_JTAG_INIT_FAILED;
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}
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i = ioctl(device_handle, PPCLAIM);
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if (i < 0)
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{
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ERROR("cannot claim device");
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return ERROR_JTAG_INIT_FAILED;
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}
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i = IEEE1284_MODE_EPP;
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i = ioctl(device_handle, PPSETMODE, & i);
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if (i < 0)
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{
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ERROR(" cannot set compatible mode to device");
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return ERROR_JTAG_INIT_FAILED;
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}
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control_port = 0x00;
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i = ioctl(device_handle, PPWCONTROL, &control_port);
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control_port = 0x04;
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i = ioctl(device_handle, PPWCONTROL, &control_port);
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#else
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if (amt_jtagaccel_port == 0)
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{
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amt_jtagaccel_port = 0x378;
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WARNING("No parport port specified, using default '0x378' (LPT1)");
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}
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if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
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ERROR("missing privileges for direct i/o");
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return ERROR_JTAG_INIT_FAILED;
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}
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/* prepare epp port */
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/* clear timeout */
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status_port = inb(amt_jtagaccel_port + 1);
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outb(status_port | 0x1, amt_jtagaccel_port + 1);
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/* reset epp port */
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outb(0x00, amt_jtagaccel_port + 2);
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outb(0x04, amt_jtagaccel_port + 2);
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#endif
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/* enable JTAG port */
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aw_control_fsm |= 0x04;
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AMT_AW(aw_control_fsm);
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amt_jtagaccel_speed(jtag_speed);
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if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
|
|
aw_control_rst &= ~0x8;
|
|
else
|
|
aw_control_rst |= 0x8;
|
|
|
|
if (jtag_reset_config & RESET_SRST_PUSH_PULL)
|
|
aw_control_rst &= ~0x2;
|
|
else
|
|
aw_control_rst |= 0x2;
|
|
|
|
amt_jtagaccel_reset(0, 0);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int amt_jtagaccel_quit(void)
|
|
{
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
|
|
{
|
|
if (argc == 0)
|
|
return ERROR_OK;
|
|
|
|
/* only if the port wasn't overwritten by cmdline */
|
|
if (amt_jtagaccel_port == 0)
|
|
amt_jtagaccel_port = strtoul(args[0], NULL, 0);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
|
|
{
|
|
if (argc == 0)
|
|
{
|
|
command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
|
|
return ERROR_OK;
|
|
}
|
|
else
|
|
{
|
|
if (strcmp(args[0], "enabled") == 0)
|
|
{
|
|
rtck_enabled = 1;
|
|
|
|
/* set RTCK enable bit */
|
|
aw_control_fsm |= 0x02;
|
|
AMT_AW(aw_control_fsm);
|
|
}
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|