1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
25 ***************************************************************************/
31 #include <helper/log.h>
32 #include <helper/binarybuffer.h>
35 #include "target_request.h"
36 #include "target_type.h"
39 static bool got_message
;
41 bool target_got_message(void)
48 static int charmsg_mode
;
50 static int target_asciimsg(struct target
*target
, uint32_t length
)
52 char *msg
= malloc(DIV_ROUND_UP(length
+ 1, 4) * 4);
53 struct debug_msg_receiver
*c
= target
->dbgmsg
;
55 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
, 4), (uint8_t *)msg
);
61 command_print(c
->cmd_ctx
, "%s", msg
);
68 static int target_charmsg(struct target
*target
, uint8_t msg
)
70 LOG_USER_N("%c", msg
);
75 static int target_hexmsg(struct target
*target
, int size
, uint32_t length
)
77 uint8_t *data
= malloc(DIV_ROUND_UP(length
* size
, 4) * 4);
80 struct debug_msg_receiver
*c
= target
->dbgmsg
;
83 LOG_DEBUG("size: %i, length: %i", (int)size
, (int)length
);
85 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
* size
, 4), (uint8_t *)data
);
88 for (i
= 0; i
< length
; i
++) {
91 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%8.8" PRIx32
" ", le_to_h_u32(data
+ (4*i
)));
94 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%4.4x ", le_to_h_u16(data
+ (2*i
)));
97 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%2.2x ", data
[i
]);
101 if ((i
%8 == 7) || (i
== length
- 1)) {
102 LOG_DEBUG("%s", line
);
105 command_print(c
->cmd_ctx
, "%s", line
);
118 /* handle requests from the target received by a target specific
119 * side-band channel (e.g. ARM7/9 DCC)
121 int target_request(struct target
*target
, uint32_t request
)
123 target_req_cmd_t target_req_cmd
= request
& 0xff;
125 assert(target
->type
->target_request_data
);
127 /* Record that we got a target message for back-off algorithm */
131 target_charmsg(target
, target_req_cmd
);
135 switch (target_req_cmd
) {
136 case TARGET_REQ_TRACEMSG
:
137 trace_point(target
, (request
& 0xffffff00) >> 8);
139 case TARGET_REQ_DEBUGMSG
:
140 if (((request
& 0xff00) >> 8) == 0)
141 target_asciimsg(target
, (request
& 0xffff0000) >> 16);
143 target_hexmsg(target
, (request
& 0xff00) >> 8, (request
& 0xffff0000) >> 16);
145 case TARGET_REQ_DEBUGCHAR
:
146 target_charmsg(target
, (request
& 0x00ff0000) >> 16);
148 /* case TARGET_REQ_SEMIHOSTING:
152 LOG_ERROR("unknown target request: %2.2x", target_req_cmd
);
159 static int add_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
161 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
164 return ERROR_COMMAND_SYNTAX_ERROR
;
166 /* see if there's already a list */
168 /* find end of linked list */
174 /* add new debug message receiver */
175 (*p
) = malloc(sizeof(struct debug_msg_receiver
));
176 (*p
)->cmd_ctx
= cmd_ctx
;
179 /* enable callback */
180 target
->dbg_msg_enabled
= 1;
185 static struct debug_msg_receiver
*find_debug_msg_receiver(struct command_context
*cmd_ctx
,
186 struct target
*target
)
188 int do_all_targets
= 0;
190 /* if no target has been specified search all of them */
191 if (target
== NULL
) {
192 /* if no targets haven been specified */
193 if (all_targets
== NULL
)
196 target
= all_targets
;
200 /* so we target != null */
201 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
204 if ((*p
)->cmd_ctx
== cmd_ctx
)
209 target
= target
->next
;
210 } while (target
&& do_all_targets
);
215 int delete_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
217 struct debug_msg_receiver
**p
;
218 struct debug_msg_receiver
*c
;
219 int do_all_targets
= 0;
221 /* if no target has been specified search all of them */
222 if (target
== NULL
) {
223 /* if no targets haven been specified */
224 if (all_targets
== NULL
)
227 target
= all_targets
;
235 struct debug_msg_receiver
*next
= c
->next
;
236 if (c
->cmd_ctx
== cmd_ctx
) {
240 /* disable callback */
241 target
->dbg_msg_enabled
= 0;
249 target
= target
->next
;
250 } while (target
&& do_all_targets
);
255 COMMAND_HANDLER(handle_target_request_debugmsgs_command
)
257 struct target
*target
= get_current_target(CMD_CTX
);
261 if (target
->type
->target_request_data
== NULL
) {
262 LOG_ERROR("Target %s does not support target requests", target_name(target
));
266 /* see if reciever is already registered */
267 if (find_debug_msg_receiver(CMD_CTX
, target
) != NULL
)
271 if (!strcmp(CMD_ARGV
[0], "enable") || !strcmp(CMD_ARGV
[0], "charmsg")) {
272 /* don't register if this command context is already receiving */
275 add_debug_msg_receiver(CMD_CTX
, target
);
277 charmsg_mode
= !strcmp(CMD_ARGV
[0], "charmsg");
278 } else if (!strcmp(CMD_ARGV
[0], "disable")) {
279 /* no need to delete a receiver if none is registered */
282 delete_debug_msg_receiver(CMD_CTX
, target
);
285 return ERROR_COMMAND_SYNTAX_ERROR
;
288 command_print(CMD_CTX
, "receiving debug messages from current target %s",
289 (receiving
) ? (charmsg_mode
? "charmsg" : "enabled") : "disabled");
293 static const struct command_registration target_req_exec_command_handlers
[] = {
296 .handler
= handle_target_request_debugmsgs_command
,
297 .mode
= COMMAND_EXEC
,
298 .help
= "display and/or modify reception of debug messages from target",
299 .usage
= "['enable'|'charmsg'|'disable']",
301 COMMAND_REGISTRATION_DONE
303 static const struct command_registration target_req_command_handlers
[] = {
305 .name
= "target_request",
307 .help
= "target request command group",
309 .chain
= target_req_exec_command_handlers
,
311 COMMAND_REGISTRATION_DONE
314 int target_request_register_commands(struct command_context
*cmd_ctx
)
316 return register_commands(cmd_ctx
, NULL
, target_req_command_handlers
);
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