1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Copyright (C) 2007 by Dominic Rath *
5 * Dominic.Rath@gmx.de *
7 * Copyright (C) 2007,2008 Øyvind Harboe *
8 * oyvind.harboe@zylin.com *
10 * Copyright (C) 2008 by Spencer Oliver *
11 * spen@spen-soft.co.uk *
12 ***************************************************************************/
18 #include <helper/log.h>
19 #include <helper/binarybuffer.h>
22 #include "target_request.h"
23 #include "target_type.h"
26 static bool got_message
;
28 bool target_got_message(void)
35 static int charmsg_mode
;
37 static int target_asciimsg(struct target
*target
, uint32_t length
)
39 char *msg
= malloc(DIV_ROUND_UP(length
+ 1, 4) * 4);
40 struct debug_msg_receiver
*c
= target
->dbgmsg
;
42 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
, 4), (uint8_t *)msg
);
48 command_output_text(c
->cmd_ctx
, msg
);
55 static int target_charmsg(struct target
*target
, uint8_t msg
)
57 LOG_USER_N("%c", msg
);
62 static int target_hexmsg(struct target
*target
, int size
, uint32_t length
)
64 uint8_t *data
= malloc(DIV_ROUND_UP(length
* size
, 4) * 4);
67 struct debug_msg_receiver
*c
= target
->dbgmsg
;
70 LOG_DEBUG("size: %i, length: %i", (int)size
, (int)length
);
72 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
* size
, 4), (uint8_t *)data
);
75 for (i
= 0; i
< length
; i
++) {
78 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%8.8" PRIx32
" ", le_to_h_u32(data
+ (4*i
)));
81 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%4.4x ", le_to_h_u16(data
+ (2*i
)));
84 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%2.2x ", data
[i
]);
88 if ((i
%8 == 7) || (i
== length
- 1)) {
89 LOG_DEBUG("%s", line
);
92 command_output_text(c
->cmd_ctx
, line
);
105 /* handle requests from the target received by a target specific
106 * side-band channel (e.g. ARM7/9 DCC)
108 int target_request(struct target
*target
, uint32_t request
)
110 target_req_cmd_t target_req_cmd
= request
& 0xff;
112 assert(target
->type
->target_request_data
);
114 /* Record that we got a target message for back-off algorithm */
118 target_charmsg(target
, target_req_cmd
);
122 switch (target_req_cmd
) {
123 case TARGET_REQ_TRACEMSG
:
124 trace_point(target
, (request
& 0xffffff00) >> 8);
126 case TARGET_REQ_DEBUGMSG
:
127 if (((request
& 0xff00) >> 8) == 0)
128 target_asciimsg(target
, (request
& 0xffff0000) >> 16);
130 target_hexmsg(target
, (request
& 0xff00) >> 8, (request
& 0xffff0000) >> 16);
132 case TARGET_REQ_DEBUGCHAR
:
133 target_charmsg(target
, (request
& 0x00ff0000) >> 16);
135 /* case TARGET_REQ_SEMIHOSTING:
139 LOG_ERROR("unknown target request: %2.2x", target_req_cmd
);
146 static int add_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
148 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
151 return ERROR_COMMAND_SYNTAX_ERROR
;
153 /* see if there's already a list */
155 /* find end of linked list */
161 /* add new debug message receiver */
162 (*p
) = malloc(sizeof(struct debug_msg_receiver
));
163 (*p
)->cmd_ctx
= cmd_ctx
;
166 /* enable callback */
167 target
->dbg_msg_enabled
= 1;
172 static struct debug_msg_receiver
*find_debug_msg_receiver(struct command_context
*cmd_ctx
,
173 struct target
*target
)
175 int do_all_targets
= 0;
177 /* if no target has been specified search all of them */
179 /* if no targets haven been specified */
183 target
= all_targets
;
187 /* so we target != null */
188 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
191 if ((*p
)->cmd_ctx
== cmd_ctx
)
196 target
= target
->next
;
197 } while (target
&& do_all_targets
);
202 int delete_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
204 struct debug_msg_receiver
**p
;
205 struct debug_msg_receiver
*c
;
206 int do_all_targets
= 0;
208 /* if no target has been specified search all of them */
210 /* if no targets haven been specified */
214 target
= all_targets
;
222 struct debug_msg_receiver
*next
= c
->next
;
223 if (c
->cmd_ctx
== cmd_ctx
) {
227 /* disable callback */
228 target
->dbg_msg_enabled
= 0;
236 target
= target
->next
;
237 } while (target
&& do_all_targets
);
242 COMMAND_HANDLER(handle_target_request_debugmsgs_command
)
244 struct target
*target
= get_current_target(CMD_CTX
);
248 if (!target
->type
->target_request_data
) {
249 LOG_ERROR("Target %s does not support target requests", target_name(target
));
253 /* see if receiver is already registered */
254 if (find_debug_msg_receiver(CMD_CTX
, target
))
258 if (!strcmp(CMD_ARGV
[0], "enable") || !strcmp(CMD_ARGV
[0], "charmsg")) {
259 /* don't register if this command context is already receiving */
262 add_debug_msg_receiver(CMD_CTX
, target
);
264 charmsg_mode
= !strcmp(CMD_ARGV
[0], "charmsg");
265 } else if (!strcmp(CMD_ARGV
[0], "disable")) {
266 /* no need to delete a receiver if none is registered */
269 delete_debug_msg_receiver(CMD_CTX
, target
);
272 return ERROR_COMMAND_SYNTAX_ERROR
;
275 command_print(CMD
, "receiving debug messages from current target %s",
276 (receiving
) ? (charmsg_mode
? "charmsg" : "enabled") : "disabled");
280 static const struct command_registration target_req_exec_command_handlers
[] = {
283 .handler
= handle_target_request_debugmsgs_command
,
284 .mode
= COMMAND_EXEC
,
285 .help
= "display and/or modify reception of debug messages from target",
286 .usage
= "['enable'|'charmsg'|'disable']",
288 COMMAND_REGISTRATION_DONE
290 static const struct command_registration target_req_command_handlers
[] = {
292 .name
= "target_request",
294 .help
= "target request command group",
296 .chain
= target_req_exec_command_handlers
,
298 COMMAND_REGISTRATION_DONE
301 int target_request_register_commands(struct command_context
*cmd_ctx
)
303 return register_commands(cmd_ctx
, NULL
, target_req_command_handlers
);
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