1 /*
2 * Copyright (c) 2018 Intel Corporation
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6 #include <zephyr/kernel.h>
7 #include <zephyr/kernel_structs.h>
8 #include <zephyr/init.h>
9 #include <ksched.h>
10
11 #include <SEGGER_SYSVIEW.h>
12
13 #define NAMED_EVENT_MAXSTR 20 /* Maximum string length supported by named event */
14
15 static uint32_t interrupt;
16
sysview_get_timestamp(void)17 uint32_t sysview_get_timestamp(void)
18 {
19 return k_cycle_get_32();
20 }
21
sysview_get_interrupt(void)22 uint32_t sysview_get_interrupt(void)
23 {
24 #ifdef CONFIG_CPU_CORTEX_M
25 interrupt = ((SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) >>
26 SCB_ICSR_VECTACTIVE_Pos);
27 #endif
28 return interrupt;
29 }
30
sys_trace_k_thread_switched_in(void)31 void sys_trace_k_thread_switched_in(void)
32 {
33 struct k_thread *thread;
34
35 thread = k_current_get();
36
37 if (z_is_idle_thread_object(thread)) {
38 SEGGER_SYSVIEW_OnIdle();
39 } else {
40 SEGGER_SYSVIEW_OnTaskStartExec((uint32_t)(uintptr_t)thread);
41 }
42 }
43
sys_trace_k_thread_switched_out(void)44 void sys_trace_k_thread_switched_out(void)
45 {
46 SEGGER_SYSVIEW_OnTaskStopExec();
47 }
48
sys_trace_isr_enter(void)49 void sys_trace_isr_enter(void)
50 {
51 SEGGER_SYSVIEW_RecordEnterISR();
52 }
53
sys_trace_isr_exit(void)54 void sys_trace_isr_exit(void)
55 {
56 SEGGER_SYSVIEW_RecordExitISR();
57 }
58
sys_trace_isr_exit_to_scheduler(void)59 void sys_trace_isr_exit_to_scheduler(void)
60 {
61 SEGGER_SYSVIEW_RecordExitISRToScheduler();
62 }
63
sys_trace_idle(void)64 void sys_trace_idle(void)
65 {
66 SEGGER_SYSVIEW_OnIdle();
67 }
68
sys_trace_named_event(const char * name,uint32_t arg0,uint32_t arg1)69 void sys_trace_named_event(const char *name, uint32_t arg0, uint32_t arg1)
70 {
71 /* Based on SEGGER provided code for user defined packets */
72 uint8_t a_packet[SEGGER_SYSVIEW_INFO_SIZE + 2 *
73 SEGGER_SYSVIEW_QUANTA_U32 + NAMED_EVENT_MAXSTR + 1];
74 uint8_t *payload;
75
76 payload = SEGGER_SYSVIEW_PREPARE_PACKET(a_packet);
77 payload = SEGGER_SYSVIEW_EncodeString(payload, name, NAMED_EVENT_MAXSTR);
78 payload = SEGGER_SYSVIEW_EncodeU32(payload, arg0);
79 payload = SEGGER_SYSVIEW_EncodeU32(payload, arg1);
80 SEGGER_SYSVIEW_SendPacket(a_packet, payload, TID_NAMED_EVENT);
81 }
82
sysview_init(void)83 static int sysview_init(void)
84 {
85
86 SEGGER_SYSVIEW_Conf();
87 if (IS_ENABLED(CONFIG_SEGGER_SYSTEMVIEW_BOOT_ENABLE)) {
88 SEGGER_SYSVIEW_Start();
89 }
90 return 0;
91 }
92
93
94 SYS_INIT(sysview_init, POST_KERNEL, 0);
95
