1 /***************************************************************************
2 * Copyright (C) 2006 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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. *
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. *
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 ***************************************************************************/
25 #include "xilinx_bit.h"
29 static int virtex2_set_instr(struct jtag_tap
*tap
, uint32_t new_instr
)
34 if (buf_get_u32(tap
->cur_instr
, 0, tap
->ir_length
) != new_instr
)
36 struct scan_field field
;
39 field
.num_bits
= tap
->ir_length
;
40 field
.out_value
= calloc(DIV_ROUND_UP(field
.num_bits
, 8), 1);
41 buf_set_u32(field
.out_value
, 0, field
.num_bits
, new_instr
);
42 field
.in_value
= NULL
;
44 jtag_add_ir_scan(1, &field
, jtag_set_end_state(TAP_IDLE
));
46 free(field
.out_value
);
52 static int virtex2_send_32(struct pld_device
*pld_device
,
53 int num_words
, uint32_t *words
)
55 struct virtex2_pld_device
*virtex2_info
= pld_device
->driver_priv
;
56 struct scan_field scan_field
;
60 values
= malloc(num_words
* 4);
62 scan_field
.tap
= virtex2_info
->tap
;
63 scan_field
.num_bits
= num_words
* 32;
64 scan_field
.out_value
= values
;
65 scan_field
.in_value
= NULL
;
67 for (i
= 0; i
< num_words
; i
++)
68 buf_set_u32(values
+ 4 * i
, 0, 32, flip_u32(*words
++, 32));
70 virtex2_set_instr(virtex2_info
->tap
, 0x5); /* CFG_IN */
72 jtag_add_dr_scan(1, &scan_field
, jtag_set_end_state(TAP_DRPAUSE
));
79 static __inline__
void virtexflip32(jtag_callback_data_t arg
)
81 uint8_t *in
= (uint8_t *)arg
;
82 *((uint32_t *)in
) = flip_u32(le_to_h_u32(in
), 32);
85 static int virtex2_receive_32(struct pld_device
*pld_device
,
86 int num_words
, uint32_t *words
)
88 struct virtex2_pld_device
*virtex2_info
= pld_device
->driver_priv
;
89 struct scan_field scan_field
;
91 scan_field
.tap
= virtex2_info
->tap
;
92 scan_field
.num_bits
= 32;
93 scan_field
.out_value
= NULL
;
94 scan_field
.in_value
= NULL
;
96 virtex2_set_instr(virtex2_info
->tap
, 0x4); /* CFG_OUT */
100 scan_field
.in_value
= (uint8_t *)words
;
102 jtag_add_dr_scan(1, &scan_field
, jtag_set_end_state(TAP_DRPAUSE
));
104 jtag_add_callback(virtexflip32
, (jtag_callback_data_t
)words
);
112 static int virtex2_read_stat(struct pld_device
*pld_device
, uint32_t *status
)
118 data
[0] = 0xaa995566; /* synch word */
119 data
[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
120 data
[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
121 data
[3] = 0x20000000; /* NOOP */
122 data
[4] = 0x20000000; /* NOOP */
123 virtex2_send_32(pld_device
, 5, data
);
125 virtex2_receive_32(pld_device
, 1, status
);
127 jtag_execute_queue();
129 LOG_DEBUG("status: 0x%8.8" PRIx32
"", *status
);
134 static int virtex2_load(struct pld_device
*pld_device
, const char *filename
)
136 struct virtex2_pld_device
*virtex2_info
= pld_device
->driver_priv
;
137 struct xilinx_bit_file bit_file
;
140 struct scan_field field
;
142 field
.tap
= virtex2_info
->tap
;
143 field
.in_value
= NULL
;
145 if ((retval
= xilinx_read_bit_file(&bit_file
, filename
)) != ERROR_OK
)
148 jtag_set_end_state(TAP_IDLE
);
149 virtex2_set_instr(virtex2_info
->tap
, 0xb); /* JPROG_B */
150 jtag_execute_queue();
151 jtag_add_sleep(1000);
153 virtex2_set_instr(virtex2_info
->tap
, 0x5); /* CFG_IN */
154 jtag_execute_queue();
156 for (i
= 0; i
< bit_file
.length
; i
++)
157 bit_file
.data
[i
] = flip_u32(bit_file
.data
[i
], 8);
159 field
.num_bits
= bit_file
.length
* 8;
160 field
.out_value
= bit_file
.data
;
162 jtag_add_dr_scan(1, &field
, jtag_set_end_state(TAP_DRPAUSE
));
163 jtag_execute_queue();
167 jtag_set_end_state(TAP_IDLE
);
168 virtex2_set_instr(virtex2_info
->tap
, 0xc); /* JSTART */
169 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE
));
170 virtex2_set_instr(virtex2_info
->tap
, 0x3f); /* BYPASS */
171 virtex2_set_instr(virtex2_info
->tap
, 0x3f); /* BYPASS */
172 virtex2_set_instr(virtex2_info
->tap
, 0xc); /* JSTART */
173 jtag_add_runtest(13, jtag_set_end_state(TAP_IDLE
));
174 virtex2_set_instr(virtex2_info
->tap
, 0x3f); /* BYPASS */
175 jtag_execute_queue();
180 COMMAND_HANDLER(virtex2_handle_read_stat_command
)
182 struct pld_device
*device
;
183 struct virtex2_pld_device
*virtex2_info
;
188 command_print(CMD_CTX
, "usage: virtex2 read_stat <num>");
193 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], dev_id
);
194 device
= get_pld_device_by_num(dev_id
);
197 command_print(CMD_CTX
, "pld device '#%s' is out of bounds", CMD_ARGV
[0]);
201 virtex2_info
= device
->driver_priv
;
203 virtex2_read_stat(device
, &status
);
205 command_print(CMD_CTX
, "virtex2 status register: 0x%8.8" PRIx32
"", status
);
210 PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command
)
212 struct jtag_tap
*tap
;
214 struct virtex2_pld_device
*virtex2_info
;
218 LOG_WARNING("incomplete pld device 'virtex2' configuration");
219 return ERROR_PLD_DEVICE_INVALID
;
222 tap
= jtag_tap_by_string(CMD_ARGV
[1]);
224 command_print(CMD_CTX
, "Tap: %s does not exist", CMD_ARGV
[1]);
228 virtex2_info
= malloc(sizeof(struct virtex2_pld_device
));
229 virtex2_info
->tap
= tap
;
231 pld
->driver_priv
= virtex2_info
;
236 static int virtex2_register_commands(struct command_context
*cmd_ctx
)
238 struct command
*virtex2_cmd
= register_command(cmd_ctx
, NULL
, "virtex2",
239 NULL
, COMMAND_ANY
, "virtex2 specific commands");
241 register_command(cmd_ctx
, virtex2_cmd
, "read_stat",
242 &virtex2_handle_read_stat_command
, COMMAND_EXEC
,
243 "read Virtex-II status register");
248 struct pld_driver virtex2_pld
= {
250 .register_commands
= &virtex2_register_commands
,
251 .pld_device_command
= &virtex2_pld_device_command
,
252 .load
= &virtex2_load
,
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