7e422fb966ad404e9643a6b1f2f05bc8f1109e1c
[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(jtag_tap_t *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 scan_field_t field;
37
38 field.tap = tap;
39 field.num_bits = tap->ir_length;
40 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
41 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
42 field.in_value = NULL;
43
44 jtag_add_ir_scan(1, &field, jtag_set_end_state(TAP_IDLE));
45
46 free(field.out_value);
47 }
48
49 return ERROR_OK;
50 }
51
52 static int virtex2_send_32(struct pld_device_s *pld_device,
53 int num_words, uint32_t *words)
54 {
55 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
56 scan_field_t scan_field;
57 uint8_t *values;
58 int i;
59
60 values = malloc(num_words * 4);
61
62 scan_field.tap = virtex2_info->tap;
63 scan_field.num_bits = num_words * 32;
64 scan_field.out_value = values;
65 scan_field.in_value = NULL;
66
67 for (i = 0; i < num_words; i++)
68 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
69
70 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
71
72 jtag_add_dr_scan(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
73
74 free(values);
75
76 return ERROR_OK;
77 }
78
79 static __inline__ void virtexflip32(jtag_callback_data_t arg)
80 {
81 uint8_t *in = (uint8_t *)arg;
82 *((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
83 }
84
85 static int virtex2_receive_32(struct pld_device_s *pld_device,
86 int num_words, uint32_t *words)
87 {
88 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
89 scan_field_t scan_field;
90
91 scan_field.tap = virtex2_info->tap;
92 scan_field.num_bits = 32;
93 scan_field.out_value = NULL;
94 scan_field.in_value = NULL;
95
96 virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
97
98 while (num_words--)
99 {
100 scan_field.in_value = (uint8_t *)words;
101
102 jtag_add_dr_scan(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
103
104 jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
105
106 words++;;
107 }
108
109 return ERROR_OK;
110 }
111
112 static int virtex2_read_stat(struct pld_device_s *pld_device, uint32_t *status)
113 {
114 uint32_t data[5];
115
116 jtag_add_tlr();
117
118 data[0] = 0xaa995566; /* synch word */
119 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
120 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
121 data[3] = 0x20000000; /* NOOP */
122 data[4] = 0x20000000; /* NOOP */
123 virtex2_send_32(pld_device, 5, data);
124
125 virtex2_receive_32(pld_device, 1, status);
126
127 jtag_execute_queue();
128
129 LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
130
131 return ERROR_OK;
132 }
133
134 static int virtex2_load(struct pld_device_s *pld_device, const char *filename)
135 {
136 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
137 xilinx_bit_file_t bit_file;
138 int retval;
139 unsigned int i;
140 scan_field_t field;
141
142 field.tap = virtex2_info->tap;
143 field.in_value = NULL;
144
145 if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
146 return retval;
147
148 jtag_set_end_state(TAP_IDLE);
149 virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
150 jtag_execute_queue();
151 jtag_add_sleep(1000);
152
153 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
154 jtag_execute_queue();
155
156 for (i = 0; i < bit_file.length; i++)
157 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
158
159 field.num_bits = bit_file.length * 8;
160 field.out_value = bit_file.data;
161
162 jtag_add_dr_scan(1, &field, jtag_set_end_state(TAP_DRPAUSE));
163 jtag_execute_queue();
164
165 jtag_add_tlr();
166
167 jtag_set_end_state(TAP_IDLE);
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 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
172 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
173 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
174 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
175 jtag_execute_queue();
176
177 return ERROR_OK;
178 }
179
180 COMMAND_HANDLER(virtex2_handle_read_stat_command)
181 {
182 pld_device_t *device;
183 virtex2_pld_device_t *virtex2_info;
184 uint32_t status;
185
186 if (argc < 1)
187 {
188 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
189 return ERROR_OK;
190 }
191
192 unsigned dev_id;
193 COMMAND_PARSE_NUMBER(uint, args[0], dev_id);
194 device = get_pld_device_by_num(dev_id);
195 if (!device)
196 {
197 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
198 return ERROR_OK;
199 }
200
201 virtex2_info = device->driver_priv;
202
203 virtex2_read_stat(device, &status);
204
205 command_print(cmd_ctx, "virtex2 status register: 0x%8.8" PRIx32 "", status);
206
207 return ERROR_OK;
208 }
209
210 PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
211 {
212 jtag_tap_t *tap;
213
214 virtex2_pld_device_t *virtex2_info;
215
216 if (argc < 2)
217 {
218 LOG_WARNING("incomplete pld device 'virtex2' configuration");
219 return ERROR_PLD_DEVICE_INVALID;
220 }
221
222 tap = jtag_tap_by_string(args[1]);
223 if (tap == NULL) {
224 command_print(cmd_ctx, "Tap: %s does not exist", args[1]);
225 return ERROR_OK;
226 }
227
228 virtex2_info = malloc(sizeof(virtex2_pld_device_t));
229 virtex2_info->tap = tap;
230
231 pld->driver_priv = virtex2_info;
232
233 return ERROR_OK;
234 }
235
236 static int virtex2_register_commands(struct command_context_s *cmd_ctx)
237 {
238 command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2",
239 NULL, COMMAND_ANY, "virtex2 specific commands");
240
241 register_command(cmd_ctx, virtex2_cmd, "read_stat",
242 &virtex2_handle_read_stat_command, COMMAND_EXEC,
243 "read Virtex-II status register");
244
245 return ERROR_OK;
246 }
247
248 pld_driver_t virtex2_pld = {
249 .name = "virtex2",
250 .register_commands = &virtex2_register_commands,
251 .pld_device_command = &virtex2_pld_device_command,
252 .load = &virtex2_load,
253 };