1f063a0ad925dc0b89c61d3ed84ca3965ff8bc27
[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, uint32_t 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, uint32_t *words)
66 {
67 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
68 scan_field_t scan_field;
69 uint8_t *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(jtag_callback_data_t arg)
92 {
93 uint8_t *in=(uint8_t *)arg;
94 *((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
95 }
96
97 static int virtex2_receive_32(struct pld_device_s *pld_device,
98 int num_words, uint32_t *words)
99 {
100 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
101 scan_field_t scan_field;
102
103 scan_field.tap = virtex2_info->tap;
104 scan_field.num_bits = 32;
105 scan_field.out_value = NULL;
106 scan_field.in_value = NULL;
107
108 virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
109
110 while (num_words--)
111 {
112 scan_field.in_value = (uint8_t *)words;
113
114 jtag_add_dr_scan(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
115
116 jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
117
118 words++;;
119 }
120
121 return ERROR_OK;
122 }
123
124 static int virtex2_read_stat(struct pld_device_s *pld_device, uint32_t *status)
125 {
126 uint32_t data[5];
127
128 jtag_add_tlr();
129
130 data[0] = 0xaa995566; /* synch word */
131 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
132 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
133 data[3] = 0x20000000; /* NOOP */
134 data[4] = 0x20000000; /* NOOP */
135 virtex2_send_32(pld_device, 5, data);
136
137 virtex2_receive_32(pld_device, 1, status);
138
139 jtag_execute_queue();
140
141 LOG_DEBUG("status: 0x%8.8x", *status);
142
143 return ERROR_OK;
144 }
145
146 static int virtex2_load(struct pld_device_s *pld_device, char *filename)
147 {
148 virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
149 xilinx_bit_file_t bit_file;
150 int retval;
151 unsigned int i;
152 scan_field_t field;
153
154 field.tap = virtex2_info->tap;
155 field.in_value = NULL;
156
157 if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
158 return retval;
159
160 jtag_set_end_state(TAP_IDLE);
161 virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
162 jtag_execute_queue();
163 jtag_add_sleep(1000);
164
165 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
166 jtag_execute_queue();
167
168 for (i = 0; i < bit_file.length; i++)
169 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
170
171 field.num_bits = bit_file.length * 8;
172 field.out_value = bit_file.data;
173
174 jtag_add_dr_scan(1, &field, jtag_set_end_state(TAP_DRPAUSE));
175 jtag_execute_queue();
176
177 jtag_add_tlr();
178
179 jtag_set_end_state(TAP_IDLE);
180 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
181 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
182 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
183 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
184 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
185 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE));
186 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
187 jtag_execute_queue();
188
189 return ERROR_OK;
190 }
191
192 static int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx,
193 char *cmd, char **args, int argc)
194 {
195 pld_device_t *device;
196 virtex2_pld_device_t *virtex2_info;
197 uint32_t status;
198
199 if (argc < 1)
200 {
201 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
202 return ERROR_OK;
203 }
204
205 device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
206 if (!device)
207 {
208 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
209 return ERROR_OK;
210 }
211
212 virtex2_info = device->driver_priv;
213
214 virtex2_read_stat(device, &status);
215
216 command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
217
218 return ERROR_OK;
219 }
220
221 static int virtex2_register_commands(struct command_context_s *cmd_ctx)
222 {
223 command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
224
225 register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
226 "read Virtex-II status register");
227
228 return ERROR_OK;
229 }
230
231 static int virtex2_pld_device_command(struct command_context_s *cmd_ctx,
232 char *cmd, char **args, int argc, struct pld_device_s *pld_device)
233 {
234 jtag_tap_t *tap;
235
236 virtex2_pld_device_t *virtex2_info;
237
238 if (argc < 2)
239 {
240 LOG_WARNING("incomplete pld device 'virtex2' configuration");
241 return ERROR_PLD_DEVICE_INVALID;
242 }
243
244 tap = jtag_tap_by_string(args[1]);
245 if (tap == NULL) {
246 command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
247 return ERROR_OK;
248 }
249
250 virtex2_info = malloc(sizeof(virtex2_pld_device_t));
251 pld_device->driver_priv = virtex2_info;
252 virtex2_info->tap = tap;
253
254 return ERROR_OK;
255 }