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