1 /***************************************************************************
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2 * Copyright (C) 2005 by Dominic Rath *
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3 * Dominic.Rath@gmx.de *
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5 * This program is free software; you can redistribute it and/or modify *
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6 * it under the terms of the GNU General Public License as published by *
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7 * the Free Software Foundation; either version 2 of the License, or *
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8 * (at your option) any later version. *
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10 * This program is distributed in the hope that it will be useful, *
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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13 * GNU General Public License for more details. *
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15 * You should have received a copy of the GNU General Public License *
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16 * along with this program; if not, write to the *
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17 * Free Software Foundation, Inc., *
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18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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19 ***************************************************************************/
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20 #ifdef HAVE_CONFIG_H
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24 #include "replacements.h"
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28 /* system includes */
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37 #include <sys/time.h>
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40 #if PARPORT_USE_PPDEV == 1
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41 #include <linux/parport.h>
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42 #include <linux/ppdev.h>
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44 #include <sys/ioctl.h>
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46 #else /* not PARPORT_USE_PPDEV */
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52 #if PARPORT_USE_GIVEIO == 1
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54 #include <windows.h>
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63 u16 amt_jtagaccel_port;
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65 /* interface variables
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67 static u8 aw_control_rst = 0x00;
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68 static u8 aw_control_fsm = 0x10;
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69 static u8 aw_control_baudrate = 0x20;
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71 static int rtck_enabled = 0;
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73 #if PARPORT_USE_PPDEV == 1
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74 static int device_handle;
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75 int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
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76 int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
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77 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
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78 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
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79 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
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80 #define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
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82 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
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83 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
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84 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
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85 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
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88 int amt_jtagaccel_execute_queue(void);
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89 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
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90 int amt_jtagaccel_speed(int speed);
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91 int amt_jtagaccel_init(void);
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92 int amt_jtagaccel_quit(void);
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94 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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95 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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97 /* tap_move[i][j]: tap movement command to go from state i to state j
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98 * 0: Test-Logic-Reset
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105 u8 amt_jtagaccel_tap_move[6][6][2] =
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107 /* TLR RTI SD PD SI PI */
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108 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* TLR */
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109 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* RTI */
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110 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* SD */
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111 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* PD */
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112 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* SI */
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113 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* PI */
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116 jtag_interface_t amt_jtagaccel_interface =
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118 .name = "amt_jtagaccel",
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120 .execute_queue = amt_jtagaccel_execute_queue,
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122 .speed = amt_jtagaccel_speed,
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123 .register_commands = amt_jtagaccel_register_commands,
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124 .init = amt_jtagaccel_init,
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125 .quit = amt_jtagaccel_quit,
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128 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx)
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130 register_command(cmd_ctx, NULL, "parport_port", amt_jtagaccel_handle_parport_port_command,
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131 COMMAND_CONFIG, NULL);
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132 register_command(cmd_ctx, NULL, "rtck", amt_jtagaccel_handle_rtck_command,
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133 COMMAND_CONFIG, NULL);
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138 void amt_jtagaccel_reset(int trst, int srst)
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141 aw_control_rst |= 0x4;
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142 else if (trst == 0)
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143 aw_control_rst &= ~0x4;
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146 aw_control_rst |= 0x1;
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147 else if (srst == 0)
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148 aw_control_rst &= ~0x1;
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150 AMT_AW(aw_control_rst);
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153 int amt_jtagaccel_speed(int speed)
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155 aw_control_baudrate &= 0xf0;
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156 aw_control_baudrate |= speed & 0x0f;
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157 AMT_AW(aw_control_baudrate);
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162 void amt_jtagaccel_end_state(state)
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164 if (tap_move_map[state] != -1)
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168 ERROR("BUG: %i is not a valid end state", state);
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173 void amt_wait_scan_busy()
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175 int timeout = 4096;
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179 while (((ar_status) & 0x80) && (timeout-- > 0))
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182 if (ar_status & 0x80)
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184 ERROR("amt_jtagaccel timed out while waiting for end of scan, rtck was %s, last AR_STATUS: 0x%2.2x", (rtck_enabled) ? "enabled" : "disabled", ar_status);
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189 void amt_jtagaccel_state_move(void)
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194 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
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195 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
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197 aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
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198 AMT_AW(aw_scan_tms_5);
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199 if (jtag_speed > 3 || rtck_enabled)
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200 amt_wait_scan_busy();
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202 if (tms_scan[0] & 0x80)
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204 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
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205 AMT_AW(aw_scan_tms_5);
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206 if (jtag_speed > 3 || rtck_enabled)
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207 amt_wait_scan_busy();
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210 cur_state = end_state;
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213 void amt_jtagaccel_runtest(int num_cycles)
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217 u8 aw_scan_tms_1to4;
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219 enum tap_state saved_end_state = end_state;
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221 /* only do a state_move when we're not already in RTI */
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222 if (cur_state != TAP_RTI)
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224 amt_jtagaccel_end_state(TAP_RTI);
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225 amt_jtagaccel_state_move();
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228 while (num_cycles - i >= 5)
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230 aw_scan_tms_5 = 0x40;
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231 AMT_AW(aw_scan_tms_5);
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235 if (num_cycles - i > 0)
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237 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
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238 AMT_AW(aw_scan_tms_1to4);
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241 amt_jtagaccel_end_state(saved_end_state);
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242 if (cur_state != end_state)
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243 amt_jtagaccel_state_move();
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246 void amt_jtagaccel_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
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248 int bits_left = scan_size;
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250 enum tap_state saved_end_state = end_state;
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258 amt_jtagaccel_end_state(TAP_SI);
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260 amt_jtagaccel_end_state(TAP_SD);
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262 amt_jtagaccel_state_move();
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263 amt_jtagaccel_end_state(saved_end_state);
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265 /* handle unaligned bits at the beginning */
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266 if ((scan_size - 1) % 8)
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268 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
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269 AMT_AW(aw_tdi_option);
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271 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
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272 AMT_DW(dw_tdi_scan);
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273 if (jtag_speed > 3 || rtck_enabled)
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274 amt_wait_scan_busy();
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276 if ((type == SCAN_IN) || (type == SCAN_IO))
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279 dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
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280 buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
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283 bit_count += (scan_size - 1) % 8;
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284 bits_left -= (scan_size - 1) % 8;
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287 while (bits_left - 1 >= 8)
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289 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
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290 AMT_DW(dw_tdi_scan);
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291 if (jtag_speed > 3 || rtck_enabled)
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292 amt_wait_scan_busy();
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294 if ((type == SCAN_IN) || (type == SCAN_IO))
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297 buf_set_u32(buffer, bit_count, 8, dr_tdo);
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304 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
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305 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
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306 aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
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307 AMT_AW(aw_tms_scan);
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308 if (jtag_speed > 3 || rtck_enabled)
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309 amt_wait_scan_busy();
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311 if ((type == SCAN_IN) || (type == SCAN_IO))
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314 dr_tdo = dr_tdo >> 7;
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315 buf_set_u32(buffer, bit_count, 1, dr_tdo);
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318 if (tms_scan[0] & 0x80)
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320 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
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321 AMT_AW(aw_tms_scan);
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322 if (jtag_speed > 3 || rtck_enabled)
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323 amt_wait_scan_busy();
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325 cur_state = end_state;
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328 int amt_jtagaccel_execute_queue(void)
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330 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
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332 enum scan_type type;
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336 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
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337 * that wasn't handled by a caller-provided error handler
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345 case JTAG_END_STATE:
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346 #ifdef _DEBUG_JTAG_IO_
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347 DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
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349 if (cmd->cmd.end_state->end_state != -1)
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350 amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
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353 #ifdef _DEBUG_JTAG_IO_
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354 DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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356 if (cmd->cmd.reset->trst == 1)
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358 cur_state = TAP_TLR;
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360 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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363 #ifdef _DEBUG_JTAG_IO_
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364 DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
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366 if (cmd->cmd.runtest->end_state != -1)
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367 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
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368 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
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370 case JTAG_STATEMOVE:
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371 #ifdef _DEBUG_JTAG_IO_
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372 DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
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374 if (cmd->cmd.statemove->end_state != -1)
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375 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
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376 amt_jtagaccel_state_move();
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379 #ifdef _DEBUG_JTAG_IO_
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380 DEBUG("scan end in %i", cmd->cmd.scan->end_state);
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382 if (cmd->cmd.scan->end_state != -1)
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383 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
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384 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
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385 type = jtag_scan_type(cmd->cmd.scan);
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386 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
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387 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
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388 retval = ERROR_JTAG_QUEUE_FAILED;
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393 #ifdef _DEBUG_JTAG_IO_
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394 DEBUG("sleep %i", cmd->cmd.sleep->us);
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396 jtag_sleep(cmd->cmd.sleep->us);
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399 ERROR("BUG: unknown JTAG command type encountered");
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408 #if PARPORT_USE_GIVEIO == 1
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409 int amt_jtagaccel_get_giveio_access()
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412 OSVERSIONINFO version;
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414 version.dwOSVersionInfoSize = sizeof version;
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415 if (!GetVersionEx( &version )) {
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419 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
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422 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
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423 if (h == INVALID_HANDLE_VALUE) {
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434 int amt_jtagaccel_init(void)
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436 #if PARPORT_USE_PPDEV == 1
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445 #if PARPORT_USE_PPDEV == 1
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446 if (device_handle > 0)
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448 ERROR("device is already opened");
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449 return ERROR_JTAG_INIT_FAILED;
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452 snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
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453 device_handle = open(buffer, O_RDWR);
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455 if (device_handle < 0)
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457 ERROR("cannot open device. check it exists and that user read and write rights are set");
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458 return ERROR_JTAG_INIT_FAILED;
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461 i = ioctl(device_handle, PPCLAIM);
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464 ERROR("cannot claim device");
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465 return ERROR_JTAG_INIT_FAILED;
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468 i = IEEE1284_MODE_EPP;
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469 i = ioctl(device_handle, PPSETMODE, & i);
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472 ERROR(" cannot set compatible mode to device");
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473 return ERROR_JTAG_INIT_FAILED;
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476 control_port = 0x00;
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477 i = ioctl(device_handle, PPWCONTROL, &control_port);
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479 control_port = 0x04;
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480 i = ioctl(device_handle, PPWCONTROL, &control_port);
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483 if (amt_jtagaccel_port == 0)
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485 amt_jtagaccel_port = 0x378;
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486 WARNING("No parport port specified, using default '0x378' (LPT1)");
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489 #if PARPORT_USE_GIVEIO == 1
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490 if (amt_jtagaccel_get_giveio_access() != 0) {
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491 #else /* PARPORT_USE_GIVEIO */
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492 if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
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493 #endif /* PARPORT_USE_GIVEIO */
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494 ERROR("missing privileges for direct i/o");
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495 return ERROR_JTAG_INIT_FAILED;
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498 /* prepare epp port */
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499 /* clear timeout */
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500 status_port = inb(amt_jtagaccel_port + 1);
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501 outb(status_port | 0x1, amt_jtagaccel_port + 1);
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503 /* reset epp port */
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504 outb(0x00, amt_jtagaccel_port + 2);
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505 outb(0x04, amt_jtagaccel_port + 2);
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510 /* set RTCK enable bit */
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511 aw_control_fsm |= 0x02;
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514 /* enable JTAG port */
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515 aw_control_fsm |= 0x04;
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516 AMT_AW(aw_control_fsm);
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518 amt_jtagaccel_speed(jtag_speed);
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520 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
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521 aw_control_rst &= ~0x8;
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523 aw_control_rst |= 0x8;
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525 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
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526 aw_control_rst &= ~0x2;
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528 aw_control_rst |= 0x2;
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530 amt_jtagaccel_reset(0, 0);
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532 /* read status register */
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534 DEBUG("AR_STATUS: 0x%2.2x", ar_status);
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539 int amt_jtagaccel_quit(void)
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545 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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550 /* only if the port wasn't overwritten by cmdline */
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551 if (amt_jtagaccel_port == 0)
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552 amt_jtagaccel_port = strtoul(args[0], NULL, 0);
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557 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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561 command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
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566 if (strcmp(args[0], "enabled") == 0)
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