9ddd1f6650b3e00d52e760748fe952597a2b2753
[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
26 #include "pld.h"
27 #include "xilinx_bit.h"
28 #include "command.h"
29 #include "log.h"
30 #include "jtag.h"
31
32 #include <stdlib.h>
33
34 int virtex2_register_commands(struct command_context_s *cmd_ctx);
35 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
36 int virtex2_load(struct pld_device_s *pld_device, char *filename);
37
38 pld_driver_t virtex2_pld =
39 {
40 .name = "virtex2",
41 .register_commands = virtex2_register_commands,
42 .pld_device_command = virtex2_pld_device_command,
43 .load = virtex2_load,
44 };
45
46 int virtex2_set_instr(int chain_pos, u32 new_instr)
47 {
48 jtag_device_t *device = jtag_get_device(chain_pos);
49 if (device==NULL)
50 return ERROR_FAIL;
51
52 if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
53 {
54 scan_field_t field;
55
56 field.device = chain_pos;
57 field.num_bits = device->ir_length;
58 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
59 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
60 field.out_mask = NULL;
61 field.in_value = NULL;
62 field.in_check_value = NULL;
63 field.in_check_mask = NULL;
64 field.in_handler = NULL;
65 field.in_handler_priv = NULL;
66
67 jtag_add_ir_scan(1, &field, TAP_RTI);
68
69 free(field.out_value);
70 }
71
72 return ERROR_OK;
73 }
74
75 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
76 {
77 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
78 scan_field_t scan_field;
79 u8 *values;
80 int i;
81
82 values = malloc(num_words * 4);
83
84 scan_field.device = virtex2_info->chain_pos;
85 scan_field.num_bits = num_words * 32;
86 scan_field.out_value = values;
87 scan_field.out_mask = NULL;
88 scan_field.in_value = NULL;
89 scan_field.in_check_value = NULL;
90 scan_field.in_check_mask = NULL;
91 scan_field.in_handler = NULL;
92 scan_field.in_handler_priv = NULL;
93
94 for (i = 0; i < num_words; i++)
95 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
96
97 virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */
98
99 jtag_add_dr_scan(1, &scan_field, TAP_PD);
100
101 free(values);
102
103 return ERROR_OK;
104 }
105
106 int virtex2_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
107 {
108 u32 *dest = priv;
109 *dest = flip_u32(le_to_h_u32(in_buf), 32);
110 return ERROR_OK;
111 }
112
113 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
114 {
115 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
116 scan_field_t scan_field;
117
118 scan_field.device = virtex2_info->chain_pos;
119 scan_field.num_bits = 32;
120 scan_field.out_value = NULL;
121 scan_field.out_mask = NULL;
122 scan_field.in_value = NULL;
123 scan_field.in_check_value = NULL;
124 scan_field.in_check_mask = NULL;
125 scan_field.in_handler = virtex2_jtag_buf_to_u32;
126
127 virtex2_set_instr(virtex2_info->chain_pos, 0x4); /* CFG_OUT */
128
129 while (num_words--)
130 {
131 scan_field.in_handler_priv = words++;
132 jtag_add_dr_scan(1, &scan_field, TAP_PD);
133 }
134
135 return ERROR_OK;
136 }
137
138 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
139 {
140 u32 data[5];
141
142 jtag_add_tlr();
143
144 data[0] = 0xaa995566; /* synch word */
145 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
146 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
147 data[3] = 0x20000000; /* NOOP */
148 data[4] = 0x20000000; /* NOOP */
149 virtex2_send_32(pld_device, 5, data);
150
151 virtex2_receive_32(pld_device, 1, status);
152
153 jtag_execute_queue();
154
155 LOG_DEBUG("status: 0x%8.8x", *status);
156
157 return ERROR_OK;
158 }
159
160 int virtex2_load(struct pld_device_s *pld_device, char *filename)
161 {
162 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
163 xilinx_bit_file_t bit_file;
164 int retval;
165 int i;
166
167 scan_field_t field;
168
169 field.device = virtex2_info->chain_pos;
170 field.out_mask = NULL;
171 field.in_value = NULL;
172 field.in_check_value = NULL;
173 field.in_check_mask = NULL;
174 field.in_handler = NULL;
175 field.in_handler_priv = NULL;
176
177 if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
178 return retval;
179
180 jtag_add_end_state(TAP_RTI);
181 virtex2_set_instr(virtex2_info->chain_pos, 0xb); /* JPROG_B */
182 jtag_execute_queue();
183 jtag_add_sleep(1000);
184
185 virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */
186 jtag_execute_queue();
187
188 for (i = 0; i < bit_file.length; i++)
189 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
190
191 field.num_bits = bit_file.length * 8;
192 field.out_value = bit_file.data;
193
194 jtag_add_dr_scan(1, &field, TAP_PD);
195 jtag_execute_queue();
196
197 jtag_add_tlr();
198
199 jtag_add_end_state(TAP_RTI);
200 virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
201 jtag_add_runtest(13, TAP_RTI);
202 virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
203 virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
204 virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
205 jtag_add_runtest(13, TAP_RTI);
206 virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
207 jtag_execute_queue();
208
209 return ERROR_OK;
210 }
211
212 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
213 {
214 pld_device_t *device;
215 virtex2_pld_device_t *virtex2_info;
216 u32 status;
217
218 if (argc < 1)
219 {
220 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
221 return ERROR_OK;
222 }
223
224 device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
225 if (!device)
226 {
227 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
228 return ERROR_OK;
229 }
230
231 virtex2_info = device->driver_priv;
232
233 virtex2_read_stat(device, &status);
234
235 command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
236
237 return ERROR_OK;
238 }
239
240 int virtex2_register_commands(struct command_context_s *cmd_ctx)
241 {
242 command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
243
244 register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
245 "read Virtex-II status register");
246
247 return ERROR_OK;
248 }
249
250 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
251 {
252 virtex2_pld_device_t *virtex2_info;
253
254 if (argc < 2)
255 {
256 LOG_WARNING("incomplete pld device 'virtex2' configuration");
257 return ERROR_PLD_DEVICE_INVALID;
258 }
259
260 virtex2_info = malloc(sizeof(virtex2_pld_device_t));
261 pld_device->driver_priv = virtex2_info;
262
263 virtex2_info->chain_pos = strtoul(args[1], NULL, 0);
264
265 return ERROR_OK;
266 }