1 /***************************************************************************
2 * Copyright (C) 2014 by Marian Cingel *
3 * cingel.marian@gmail.com *
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 ***************************************************************************/
25 #include <helper/time_support.h>
26 #include <jtag/jtag.h>
27 #include "target/target.h"
28 #include "target/target_type.h"
30 #include "helper/log.h"
31 #include "helper/types.h"
32 #include "rtos_mqx_stackings.h"
35 #define MQX_THREAD_NAME_LENGTH (255)
36 #define MQX_KERNEL_OFFSET_TDLIST (0x0108)
37 #define MQX_KERNEL_OFFSET_SYSTEM_TASK (0x0050)
38 #define MQX_KERNEL_OFFSET_ACTIVE_TASK (0x001C)
39 #define MQX_KERNEL_OFFSET_CAPABILITY (0x0000)
40 #define MQX_QUEUE_OFFSET_SIZE (0x0008)
41 #define MQX_TASK_OFFSET_STATE (0x0008)
42 #define MQX_TASK_OFFSET_ID (0x000c)
43 #define MQX_TASK_OFFSET_TEMPLATE (0x0068)
44 #define MQX_TASK_OFFSET_STACK (0x0014)
45 #define MQX_TASK_OFFSET_TDLIST (0x006C)
46 #define MQX_TASK_OFFSET_NEXT (0x0000)
47 #define MQX_TASK_TEMPLATE_OFFSET_NAME (0x0010)
48 #define MQX_TASK_OFFSET_ERROR_CODE (0x005C)
49 #define MQX_TASK_STATE_MASK (0xFFF)
53 mqx_VAL_mqx_kernel_data,
54 mqx_VAL_MQX_init_struct,
62 const char *target_name;
63 const enum mqx_arch target_arch;
64 const struct rtos_register_stacking *stacking_info;
73 static const struct mqx_state mqx_states[] = {
75 { 0x0003, "BLOCKED" },
76 { 0x0005, "RCV_SPECIFIC_BLOCKED" },
77 { 0x0007, "RCV_ANY_BLOCKED" },
79 { 0x000B, "UNHANDLED_INT_BLOCKED" },
80 { 0x000D, "SEND_BLOCKED" },
81 { 0x000F, "BREAKPOINT_BLOCKED" },
82 { 0x0211, "IO_BLOCKED" },
83 { 0x0021, "SEM_BLOCKED" },
84 { 0x0223, "MUTEX_BLOCKED" },
85 { 0x0025, "EVENT_BLOCKED" },
86 { 0x0229, "TASK_QUEUE_BLOCKED" },
87 { 0x042B, "LWSEM_BLOCKED" },
88 { 0x042D, "LWEVENT_BLOCKED" },
91 static const char * const mqx_symbol_list[] = {
97 static const struct mqx_params mqx_params_list[] = {
98 { "cortex_m", mqx_arch_cortexm, &rtos_mqx_arm_v7m_stacking },
102 * Perform simple address check to avoid bus fault.
104 static int mqx_valid_address_check(
109 enum mqx_arch arch_type = ((struct mqx_params *)rtos->rtos_specific_params)->target_arch;
110 const char * targetname = ((struct mqx_params *)rtos->rtos_specific_params)->target_name;
112 /* Cortex M address range */
113 if (arch_type == mqx_arch_cortexm) {
115 /* code and sram area */
116 (address && address <= 0x3FFFFFFFu) ||
117 /* external ram area*/
118 (address >= 0x6000000u && address <= 0x9FFFFFFFu)
124 LOG_ERROR("MQX RTOS - unknown architecture %s", targetname);
129 * Wrapper of 'target_read_buffer' fn.
130 * Include address check.
132 static int mqx_target_read_buffer(
133 struct target *target,
139 int status = mqx_valid_address_check(target->rtos, address);
140 if (status != ERROR_OK) {
141 LOG_WARNING("MQX RTOS - target address 0x%X is not allowed to read", address);
144 status = target_read_buffer(target, address, size, buffer);
145 if (status != ERROR_OK) {
146 LOG_ERROR("MQX RTOS - reading target address 0x%X failed", address);
153 * Get symbol address if present
155 static int mqx_get_symbol(
157 enum mqx_symbols symbol,
161 /* TODO: additional check ?? */
162 (*(int *)result) = (uint32_t)rtos->symbols[symbol].address;
167 * Get value of struct member by passing
168 * member offset, width and name (debug purpose)
170 static int mqx_get_member(
172 const uint32_t base_address,
173 int32_t member_offset,
174 int32_t member_width,
175 const char *member_name,
179 int status = ERROR_FAIL;
180 status = mqx_target_read_buffer(
181 rtos->target, base_address + member_offset, member_width, result
183 if (status != ERROR_OK)
184 LOG_WARNING("MQX RTOS - cannot read \"%s\" at address 0x%X", member_name, base_address + member_offset);
189 * Check whether scheduler started
191 static int mqx_is_scheduler_running(
195 uint32_t kernel_data_symbol = 0;
196 uint32_t kernel_data_addr = 0;
197 uint32_t system_td_addr = 0;
198 uint32_t active_td_addr = 0;
199 uint32_t capability_value = 0;
201 /* get '_mqx_kernel_data' symbol */
202 if (ERROR_OK != mqx_get_symbol(
203 rtos, mqx_VAL_mqx_kernel_data, &kernel_data_symbol
207 /* get '_mqx_kernel_data' */
208 if (ERROR_OK != mqx_get_member(
209 rtos, kernel_data_symbol, 0, 4,
210 "_mqx_kernel_data", &kernel_data_addr
214 /* return if '_mqx_kernel_data' is NULL or default 0xFFFFFFFF */
215 if (0 == kernel_data_addr || (uint32_t)(-1) == kernel_data_addr)
217 /* get kernel_data->ADDRESSING_CAPABILITY */
218 if (ERROR_OK != mqx_get_member(
219 rtos, kernel_data_addr, MQX_KERNEL_OFFSET_CAPABILITY, 4,
220 "kernel_data->ADDRESSING_CAPABILITY", (void *)&capability_value
224 /* check first member, the '_mqx_kernel_data->ADDRESSING_CAPABILITY'.
225 it supose to be set to value 8 */
226 if (capability_value != 8) {
227 LOG_WARNING("MQX RTOS - value of '_mqx_kernel_data->ADDRESSING_CAPABILITY' contains invalid value");
231 if (ERROR_OK != mqx_get_member(
232 rtos, kernel_data_addr, MQX_KERNEL_OFFSET_ACTIVE_TASK, 4,
233 "kernel_data->ACTIVE_PTR", (void *)&active_td_addr
237 /* active task is system task, scheduler has not not run yet */
238 system_td_addr = kernel_data_addr + MQX_KERNEL_OFFSET_SYSTEM_TASK;
239 if (active_td_addr == system_td_addr) {
240 LOG_WARNING("MQX RTOS - scheduler does not run");
247 * API function, return 1 if MQX is present
249 static int mqx_detect_rtos(
250 struct target *target
254 (target->rtos->symbols != NULL) &&
255 (target->rtos->symbols[mqx_VAL_mqx_kernel_data].address != 0)
263 * API function, pass MQX extra info to context data
265 static int mqx_create(
266 struct target *target
269 /* check target name against supported architectures */
270 int mqx_params_list_num = (sizeof(mqx_params_list)/sizeof(struct mqx_params));
271 for (int i = 0; i < mqx_params_list_num; i++) {
272 if (0 == strcmp(mqx_params_list[i].target_name, target->type->name)) {
273 target->rtos->rtos_specific_params = (void *)&mqx_params_list[i];
274 /* LOG_DEBUG("MQX RTOS - valid architecture: %s", target->type->name); */
278 LOG_ERROR("MQX RTOS - could not find target \"%s\" in MQX compatibility list", target->type->name);
283 * API function, update list of threads
285 static int mqx_update_threads(
289 uint32_t task_queue_addr = 0;
290 uint32_t kernel_data_addr = 0;
291 uint16_t task_queue_size = 0;
292 uint32_t active_td_addr = 0;
295 rtos_free_threadlist(rtos);
296 /* check scheduler */
297 if (ERROR_OK != mqx_is_scheduler_running(rtos))
299 /* get kernel_data symbol */
300 if (ERROR_OK != mqx_get_symbol(
301 rtos, mqx_VAL_mqx_kernel_data, &kernel_data_addr
305 /* read kernel_data */
306 if (ERROR_OK != mqx_get_member(
307 rtos, kernel_data_addr, 0, 4, "_mqx_kernel_data", &kernel_data_addr
311 /* get task queue address */
312 task_queue_addr = kernel_data_addr + MQX_KERNEL_OFFSET_TDLIST;
313 /* get task queue size */
314 if (ERROR_OK != mqx_get_member(
315 rtos, task_queue_addr, MQX_QUEUE_OFFSET_SIZE, 2,
316 "kernel_data->TD_LIST.SIZE", &task_queue_size
321 if (ERROR_OK != mqx_get_member(
322 rtos, kernel_data_addr, MQX_KERNEL_OFFSET_ACTIVE_TASK, 4,
323 "kernel_data->ACTIVE_PTR", (void *)&active_td_addr
328 /* setup threads info */
329 rtos->thread_count = task_queue_size;
330 rtos->current_thread = 0;
331 rtos->thread_details = calloc(rtos->thread_count, sizeof(struct thread_detail));
332 if (NULL == rtos->thread_details)
335 /* loop over each task and setup thread details,
336 the current_taskpool_addr is set to queue head
337 NOTE: debugging functions task create/destroy
338 might cause to show invalid data.
341 uint32_t i = 0, taskpool_addr = task_queue_addr;
342 i < (uint32_t)rtos->thread_count;
345 uint8_t task_name[MQX_THREAD_NAME_LENGTH + 1];
346 uint32_t task_addr = 0, task_template = 0, task_state = 0;
347 uint32_t task_name_addr = 0, task_id = 0, task_errno = 0;
348 uint32_t state_index = 0, state_max = 0;
349 uint32_t extra_info_length = 0;
350 char *state_name = "unknown state";
352 /* set current taskpool address */
353 if (ERROR_OK != mqx_get_member(
354 rtos, taskpool_addr, MQX_TASK_OFFSET_NEXT, 4,
355 "td_struct_ptr->NEXT", &taskpool_addr
359 /* get task address from taskpool */
360 task_addr = taskpool_addr - MQX_TASK_OFFSET_TDLIST;
361 /* get address of 'td_struct_ptr->TEMPLATE_LIST_PTR' */
362 if (ERROR_OK != mqx_get_member(
363 rtos, task_addr, MQX_TASK_OFFSET_TEMPLATE, 4,
364 "td_struct_ptr->TEMPLATE_LIST_PTR", &task_template
368 /* get address of 'td_struct_ptr->TEMPLATE_LIST_PTR->NAME' */
369 if (ERROR_OK != mqx_get_member(
370 rtos, task_template, MQX_TASK_TEMPLATE_OFFSET_NAME, 4,
371 "td_struct_ptr->TEMPLATE_LIST_PTR->NAME", &task_name_addr
375 /* get value of 'td_struct->TEMPLATE_LIST_PTR->NAME' */
376 if (ERROR_OK != mqx_get_member(
377 rtos, task_name_addr, 0, MQX_THREAD_NAME_LENGTH,
378 "*td_struct_ptr->TEMPLATE_LIST_PTR->NAME", task_name
382 /* always terminate last character by force,
383 otherwise openocd might fail if task_name
384 has corrupted data */
385 task_name[MQX_THREAD_NAME_LENGTH] = '\0';
386 /* get value of 'td_struct_ptr->TASK_ID' */
387 if (ERROR_OK != mqx_get_member(
388 rtos, task_addr, MQX_TASK_OFFSET_ID, 4,
389 "td_struct_ptr->TASK_ID", &task_id
394 if (ERROR_OK != mqx_get_member(
395 rtos, task_addr, MQX_TASK_OFFSET_ERROR_CODE, 4,
396 "td_struct_ptr->TASK_ERROR_CODE", &task_errno
400 /* get value of 'td_struct_ptr->STATE' */
401 if (ERROR_OK != mqx_get_member(
402 rtos, task_addr, MQX_TASK_OFFSET_STATE, 4,
403 "td_struct_ptr->STATE", &task_state
407 task_state &= MQX_TASK_STATE_MASK;
408 /* and search for defined state */
409 state_max = (sizeof(mqx_states)/sizeof(struct mqx_state));
410 for (state_index = 0; (state_index < state_max); state_index++) {
411 if (mqx_states[state_index].state == task_state) {
412 state_name = mqx_states[state_index].name;
417 /* setup thread details struct */
418 rtos->thread_details[i].threadid = task_id;
419 rtos->thread_details[i].exists = true;
420 rtos->thread_details[i].display_str = NULL;
421 /* set thread name */
422 rtos->thread_details[i].thread_name_str = malloc(strlen((void *)task_name) + 1);
423 if (NULL == rtos->thread_details[i].thread_name_str)
425 strcpy(rtos->thread_details[i].thread_name_str, (void *)task_name);
426 /* set thread extra info
430 * calculate length as:
431 * state length + address length + errno length + formatter length
433 extra_info_length += strlen((void *)state_name) + 8 + 8 + 8;
434 rtos->thread_details[i].extra_info_str = malloc(extra_info_length + 1);
435 if (NULL == rtos->thread_details[i].extra_info_str)
438 rtos->thread_details[i].extra_info_str, extra_info_length, "%s : 0x%x : %u",
439 state_name, task_addr, task_errno
441 /* set active thread */
442 if (active_td_addr == task_addr)
443 rtos->current_thread = task_id;
449 * API function, get info of selected thread
451 static int mqx_get_thread_reg_list(
457 int64_t stack_ptr = 0;
458 uint32_t my_task_addr = 0;
459 uint32_t task_queue_addr = 0;
460 uint32_t task_queue_size = 0;
461 uint32_t kernel_data_addr = 0;
463 *hex_reg_list = NULL;
464 if (thread_id == 0) {
465 LOG_ERROR("MQX RTOS - invalid threadid: 0x%X", (int)thread_id);
468 if (ERROR_OK != mqx_is_scheduler_running(rtos))
470 /* get kernel_data symbol */
471 if (ERROR_OK != mqx_get_symbol(
472 rtos, mqx_VAL_mqx_kernel_data, &kernel_data_addr
476 /* read kernel_data */
477 if (ERROR_OK != mqx_get_member(
478 rtos, kernel_data_addr, 0, 4, "_mqx_kernel_data", &kernel_data_addr
482 /* get task queue address */
483 task_queue_addr = kernel_data_addr + MQX_KERNEL_OFFSET_TDLIST;
484 /* get task queue size */
485 if (ERROR_OK != mqx_get_member(
486 rtos, task_queue_addr, MQX_QUEUE_OFFSET_SIZE, 2,
487 "kernel_data->TD_LIST.SIZE", &task_queue_size
491 /* search for taskid */
493 uint32_t i = 0, taskpool_addr = task_queue_addr;
494 i < (uint32_t)rtos->thread_count;
497 uint32_t tmp_address = 0, task_addr = 0;
498 uint32_t task_id = 0;
499 /* set current taskpool address */
500 tmp_address = taskpool_addr;
501 if (ERROR_OK != mqx_get_member(
502 rtos, tmp_address, MQX_TASK_OFFSET_NEXT, 4,
503 "td_struct_ptr->NEXT", &taskpool_addr
507 /* get task address from taskpool */
508 task_addr = taskpool_addr - MQX_TASK_OFFSET_TDLIST;
509 /* get value of td_struct->TASK_ID */
510 if (ERROR_OK != mqx_get_member(
511 rtos, task_addr, MQX_TASK_OFFSET_ID, 4,
512 "td_struct_ptr->TASK_ID", &task_id
516 /* found taskid, break */
517 if (task_id == thread_id) {
518 my_task_addr = task_addr;
523 LOG_ERROR("MQX_RTOS - threadid %" PRId64 " does not match any task", thread_id);
526 /* get task stack head address */
527 if (ERROR_OK != mqx_get_member(
528 rtos, my_task_addr, MQX_TASK_OFFSET_STACK, 4, "task->STACK_PTR", &stack_ptr
532 return rtos_generic_stack_read(
533 rtos->target, ((struct mqx_params *)rtos->rtos_specific_params)->stacking_info, stack_ptr, hex_reg_list
537 /* API function, export list of required symbols */
538 static int mqx_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[])
540 *symbol_list = malloc(sizeof(symbol_table_elem_t) * ARRAY_SIZE(mqx_symbol_list));
541 if (NULL == *symbol_list)
543 /* export required symbols */
544 for (int i = 0; i < (int)(ARRAY_SIZE(mqx_symbol_list)); i++)
545 (*symbol_list)[i].symbol_name = mqx_symbol_list[i];
549 struct rtos_type mqx_rtos = {
551 .detect_rtos = mqx_detect_rtos,
552 .create = mqx_create,
553 .update_threads = mqx_update_threads,
554 .get_thread_reg_list = mqx_get_thread_reg_list,
555 .get_symbol_list_to_lookup = mqx_get_symbol_list_to_lookup,