jtag: retire tap field
[openocd.git] / src / pld / virtex2.c
1 /***************************************************************************
2 * Copyright (C) 2006 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "virtex2.h"
25 #include "xilinx_bit.h"
26 #include "pld.h"
27
28
29 static int virtex2_set_instr(struct jtag_tap *tap, uint32_t new_instr)
30 {
31 if (tap == NULL)
32 return ERROR_FAIL;
33
34 if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
35 {
36 struct scan_field field;
37
38 field.num_bits = tap->ir_length;
39 field.out_value = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
40 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
41 field.in_value = NULL;
42
43 jtag_add_ir_scan(tap, 1, &field, jtag_set_end_state(TAP_IDLE));
44
45 free(field.out_value);
46 }
47
48 return ERROR_OK;
49 }
50
51 static int virtex2_send_32(struct pld_device *pld_device,
52 int num_words, uint32_t *words)
53 {
54 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
55 struct scan_field scan_field;
56 uint8_t *values;
57 int i;
58
59 values = malloc(num_words * 4);
60
61 scan_field.num_bits = num_words * 32;
62 scan_field.out_value = values;
63 scan_field.in_value = NULL;
64
65 for (i = 0; i < num_words; i++)
66 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
67
68 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
69
70 jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
71
72 free(values);
73
74 return ERROR_OK;
75 }
76
77 static __inline__ void virtexflip32(jtag_callback_data_t arg)
78 {
79 uint8_t *in = (uint8_t *)arg;
80 *((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
81 }
82
83 static int virtex2_receive_32(struct pld_device *pld_device,
84 int num_words, uint32_t *words)
85 {
86 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
87 struct scan_field scan_field;
88
89 scan_field.num_bits = 32;
90 scan_field.out_value = NULL;
91 scan_field.in_value = NULL;
92
93 virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
94
95 while (num_words--)
96 {
97 scan_field.in_value = (uint8_t *)words;
98
99 jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
100
101 jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
102
103 words++;;
104 }
105
106 return ERROR_OK;
107 }
108
109 static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
110 {
111 uint32_t data[5];
112
113 jtag_add_tlr();
114
115 data[0] = 0xaa995566; /* synch word */
116 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
117 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
118 data[3] = 0x20000000; /* NOOP */
119 data[4] = 0x20000000; /* NOOP */
120 virtex2_send_32(pld_device, 5, data);
121
122 virtex2_receive_32(pld_device, 1, status);
123
124 jtag_execute_queue();
125
126 LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
127
128 return ERROR_OK;
129 }
130
131 static int virtex2_load(struct pld_device *pld_device, const char *filename)
132 {
133 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
134 struct xilinx_bit_file bit_file;
135 int retval;
136 unsigned int i;
137 struct scan_field field;
138
139 field.in_value = NULL;
140
141 if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
142 return retval;
143
144 jtag_set_end_state(TAP_IDLE);
145 virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
146 jtag_execute_queue();
147 jtag_add_sleep(1000);
148
149 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
150 jtag_execute_queue();
151
152 for (i = 0; i < bit_file.length; i++)
153 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
154
155 field.num_bits = bit_file.length * 8;
156 field.out_value = bit_file.data;
157
158 jtag_add_dr_scan(virtex2_info->tap, 1, &field, jtag_set_end_state(TAP_DRPAUSE));
159 jtag_execute_queue();
160
161 jtag_add_tlr();
162
163 jtag_set_end_state(TAP_IDLE);
164 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
165 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
166 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
167 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
168 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
169 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
170 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
171 jtag_execute_queue();
172
173 return ERROR_OK;
174 }
175
176 COMMAND_HANDLER(virtex2_handle_read_stat_command)
177 {
178 struct pld_device *device;
179 struct virtex2_pld_device *virtex2_info;
180 uint32_t status;
181
182 if (CMD_ARGC < 1)
183 {
184 command_print(CMD_CTX, "usage: virtex2 read_stat <num>");
185 return ERROR_OK;
186 }
187
188 unsigned dev_id;
189 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
190 device = get_pld_device_by_num(dev_id);
191 if (!device)
192 {
193 command_print(CMD_CTX, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
194 return ERROR_OK;
195 }
196
197 virtex2_info = device->driver_priv;
198
199 virtex2_read_stat(device, &status);
200
201 command_print(CMD_CTX, "virtex2 status register: 0x%8.8" PRIx32 "", status);
202
203 return ERROR_OK;
204 }
205
206 PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
207 {
208 struct jtag_tap *tap;
209
210 struct virtex2_pld_device *virtex2_info;
211
212 if (CMD_ARGC < 2)
213 {
214 LOG_WARNING("incomplete pld device 'virtex2' configuration");
215 return ERROR_PLD_DEVICE_INVALID;
216 }
217
218 tap = jtag_tap_by_string(CMD_ARGV[1]);
219 if (tap == NULL) {
220 command_print(CMD_CTX, "Tap: %s does not exist", CMD_ARGV[1]);
221 return ERROR_OK;
222 }
223
224 virtex2_info = malloc(sizeof(struct virtex2_pld_device));
225 virtex2_info->tap = tap;
226
227 pld->driver_priv = virtex2_info;
228
229 return ERROR_OK;
230 }
231
232 static const struct command_registration virtex2_exec_command_handlers[] = {
233 {
234 .name = "read_stat",
235 .mode = COMMAND_EXEC,
236 .handler = virtex2_handle_read_stat_command,
237 .help = "read status register",
238 .usage = "pld_num",
239 },
240 COMMAND_REGISTRATION_DONE
241 };
242 static const struct command_registration virtex2_command_handler[] = {
243 {
244 .name = "virtex2",
245 .mode = COMMAND_ANY,
246 .help = "Virtex-II specific commands",
247 .chain = virtex2_exec_command_handlers,
248 },
249 COMMAND_REGISTRATION_DONE
250 };
251
252 struct pld_driver virtex2_pld = {
253 .name = "virtex2",
254 .commands = virtex2_command_handler,
255 .pld_device_command = &virtex2_pld_device_command,
256 .load = &virtex2_load,
257 };