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