821699ac95b34d1e8e9b3c42e438f19d6fe5aa4d
[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 int virtex2_register_commands(struct command_context_s *cmd_ctx);
30 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
31 int virtex2_load(struct pld_device_s *pld_device, char *filename);
32
33 pld_driver_t virtex2_pld =
34 {
35 .name = "virtex2",
36 .register_commands = virtex2_register_commands,
37 .pld_device_command = virtex2_pld_device_command,
38 .load = virtex2_load,
39 };
40
41 int virtex2_set_instr(jtag_tap_t *tap, u32 new_instr)
42 {
43 if (tap==NULL)
44 return ERROR_FAIL;
45
46 if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
47 {
48 scan_field_t field;
49
50 field.tap = tap;
51 field.num_bits = tap->ir_length;
52 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
53 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
54
55 field.in_value = NULL;
56
57
58
59
60
61 jtag_add_ir_scan(1, &field, jtag_set_end_state(TAP_IDLE));
62
63 free(field.out_value);
64 }
65
66 return ERROR_OK;
67 }
68
69 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
70 {
71 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
72 scan_field_t scan_field;
73 u8 *values;
74 int i;
75
76 values = malloc(num_words * 4);
77
78 scan_field.tap = virtex2_info->tap;
79 scan_field.num_bits = num_words * 32;
80 scan_field.out_value = values;
81 scan_field.in_value = NULL;
82
83 for (i = 0; i < num_words; i++)
84 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
85
86 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
87
88 jtag_add_dr_scan(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
89
90 free(values);
91
92 return ERROR_OK;
93 }
94
95 static __inline__ void virtexflip32(u8 *in)
96 {
97 *((u32 *)in)=flip_u32(le_to_h_u32(in), 32);
98 }
99
100 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
101 {
102 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
103 scan_field_t scan_field;
104
105 scan_field.tap = virtex2_info->tap;
106 scan_field.num_bits = 32;
107 scan_field.out_value = NULL;
108 scan_field.in_value = NULL;
109
110 virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
111
112 while (num_words--)
113 {
114 scan_field.in_value = (u8 *)words;
115
116 jtag_add_dr_scan(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
117
118 jtag_add_callback(virtexflip32, (u8 *)words);
119
120 words++;;
121 }
122
123 return ERROR_OK;
124 }
125
126 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
127 {
128 u32 data[5];
129
130 jtag_add_tlr();
131
132 data[0] = 0xaa995566; /* synch word */
133 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
134 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
135 data[3] = 0x20000000; /* NOOP */
136 data[4] = 0x20000000; /* NOOP */
137 virtex2_send_32(pld_device, 5, data);
138
139 virtex2_receive_32(pld_device, 1, status);
140
141 jtag_execute_queue();
142
143 LOG_DEBUG("status: 0x%8.8x", *status);
144
145 return ERROR_OK;
146 }
147
148 int virtex2_load(struct pld_device_s *pld_device, char *filename)
149 {
150 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
151 xilinx_bit_file_t bit_file;
152 int retval;
153 unsigned int i;
154
155 scan_field_t field;
156
157 field.tap = virtex2_info->tap;
158
159 field.in_value = NULL;
160
161
162
163
164
165 if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
166 return retval;
167
168 jtag_set_end_state(TAP_IDLE);
169 virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
170 jtag_execute_queue();
171 jtag_add_sleep(1000);
172
173 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
174 jtag_execute_queue();
175
176 for (i = 0; i < bit_file.length; i++)
177 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
178
179 field.num_bits = bit_file.length * 8;
180 field.out_value = bit_file.data;
181
182 jtag_add_dr_scan(1, &field, jtag_set_end_state(TAP_DRPAUSE));
183 jtag_execute_queue();
184
185 jtag_add_tlr();
186
187 jtag_set_end_state(TAP_IDLE);
188 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
189 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
190 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
191 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
192 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
193 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
194 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
195 jtag_execute_queue();
196
197 return ERROR_OK;
198 }
199
200 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
201 {
202 pld_device_t *device;
203 virtex2_pld_device_t *virtex2_info;
204 u32 status;
205
206 if (argc < 1)
207 {
208 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
209 return ERROR_OK;
210 }
211
212 device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
213 if (!device)
214 {
215 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
216 return ERROR_OK;
217 }
218
219 virtex2_info = device->driver_priv;
220
221 virtex2_read_stat(device, &status);
222
223 command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
224
225 return ERROR_OK;
226 }
227
228 int virtex2_register_commands(struct command_context_s *cmd_ctx)
229 {
230 command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
231
232 register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
233 "read Virtex-II status register");
234
235 return ERROR_OK;
236 }
237
238 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
239 {
240 jtag_tap_t *tap;
241
242 virtex2_pld_device_t *virtex2_info;
243
244 if (argc < 2)
245 {
246 LOG_WARNING("incomplete pld device 'virtex2' configuration");
247 return ERROR_PLD_DEVICE_INVALID;
248 }
249
250 tap = jtag_tap_by_string( args[1] );
251 if( tap == NULL ){
252 command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
253 return ERROR_OK;
254 }
255
256 virtex2_info = malloc(sizeof(virtex2_pld_device_t));
257 pld_device->driver_priv = virtex2_info;
258 virtex2_info->tap = tap;
259
260 return ERROR_OK;
261 }