1 /*
2 * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #ifndef _ROM_RTC_H_
8 #define _ROM_RTC_H_
9
10 #include "ets_sys.h"
11
12 #include <stdbool.h>
13 #include <stdint.h>
14 #include "esp_assert.h"
15
16 #include "soc/soc.h"
17 #include "soc/rtc_cntl_reg.h"
18 #include "soc/reset_reasons.h"
19
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23
24 /** \defgroup rtc_apis, rtc registers and memory related apis
25 * @brief rtc apis
26 */
27
28 /** @addtogroup rtc_apis
29 * @{
30 */
31
32 /**************************************************************************************
33 * Note: *
34 * Some Rtc memory and registers are used, in ROM or in internal library. *
35 * Please do not use reserved or used rtc memory or registers. *
36 * *
37 *************************************************************************************
38 * RTC Memory & Store Register usage
39 *************************************************************************************
40 * rtc memory addr type size usage
41 * 0x3f421000(0x50000000) Slow SIZE_CP Co-Processor code/Reset Entry
42 * 0x3f421000+SIZE_CP Slow 8192-SIZE_CP
43 *
44 * 0x3ff80000(0x40070000) Fast 8192 deep sleep entry code
45 *
46 *************************************************************************************
47 * RTC store registers usage
48 * RTC_CNTL_STORE0_REG Reserved
49 * RTC_CNTL_STORE1_REG RTC_SLOW_CLK calibration value
50 * RTC_CNTL_STORE2_REG Boot time, low word
51 * RTC_CNTL_STORE3_REG Boot time, high word
52 * RTC_CNTL_STORE4_REG External XTAL frequency
53 * RTC_CNTL_STORE5_REG APB bus frequency
54 * RTC_CNTL_STORE6_REG FAST_RTC_MEMORY_ENTRY
55 * RTC_CNTL_STORE7_REG FAST_RTC_MEMORY_CRC
56 *************************************************************************************
57 */
58
59 #define RTC_SLOW_CLK_CAL_REG RTC_CNTL_STORE1_REG
60 #define RTC_BOOT_TIME_LOW_REG RTC_CNTL_STORE2_REG
61 #define RTC_BOOT_TIME_HIGH_REG RTC_CNTL_STORE3_REG
62 #define RTC_XTAL_FREQ_REG RTC_CNTL_STORE4_REG
63 #define RTC_APB_FREQ_REG RTC_CNTL_STORE5_REG
64 #define RTC_ENTRY_ADDR_REG RTC_CNTL_STORE6_REG
65 #define RTC_RESET_CAUSE_REG RTC_CNTL_STORE6_REG
66 #define RTC_MEMORY_CRC_REG RTC_CNTL_STORE7_REG
67
68 #define RTC_DISABLE_ROM_LOG ((1 << 0) | (1 << 16)) //!< Disable logging from the ROM code.
69
70 typedef enum {
71 AWAKE = 0, //<CPU ON
72 LIGHT_SLEEP = BIT0, //CPU waiti, PLL ON. We don't need explicitly set this mode.
73 DEEP_SLEEP = BIT1 //CPU OFF, PLL OFF, only specific timer could wake up
74 } SLEEP_MODE;
75
76 typedef enum {
77 NO_MEAN = 0,
78 POWERON_RESET = 1, /**<1, Vbat power on reset*/
79 RTC_SW_SYS_RESET = 3, /**<3, Software reset digital core*/
80 DEEPSLEEP_RESET = 5, /**<5, Deep Sleep reset digital core*/
81 TG0WDT_SYS_RESET = 7, /**<7, Timer Group0 Watch dog reset digital core*/
82 TG1WDT_SYS_RESET = 8, /**<8, Timer Group1 Watch dog reset digital core*/
83 RTCWDT_SYS_RESET = 9, /**<9, RTC Watch dog Reset digital core*/
84 INTRUSION_RESET = 10, /**<10, Instrusion tested to reset CPU*/
85 TG0WDT_CPU_RESET = 11, /**<11, Time Group0 reset CPU*/
86 RTC_SW_CPU_RESET = 12, /**<12, Software reset CPU*/
87 RTCWDT_CPU_RESET = 13, /**<13, RTC Watch dog Reset CPU*/
88 RTCWDT_BROWN_OUT_RESET = 15, /**<15, Reset when the vdd voltage is not stable*/
89 RTCWDT_RTC_RESET = 16, /**<16, RTC Watch dog reset digital core and rtc module*/
90 TG1WDT_CPU_RESET = 17, /**<17, Time Group1 reset CPU*/
91 SUPER_WDT_RESET = 18, /**<18, super watchdog reset digital core and rtc module*/
92 GLITCH_RTC_RESET = 19, /**<19, glitch reset digital core and rtc module*/
93 EFUSE_RESET = 20, /**<20, efuse reset digital core*/
94 } RESET_REASON;
95
96 // Check if the reset reason defined in ROM is compatible with soc/reset_reasons.h
97 ESP_STATIC_ASSERT((soc_reset_reason_t)POWERON_RESET == RESET_REASON_CHIP_POWER_ON, "POWERON_RESET != RESET_REASON_CHIP_POWER_ON");
98 ESP_STATIC_ASSERT((soc_reset_reason_t)RTC_SW_SYS_RESET == RESET_REASON_CORE_SW, "RTC_SW_SYS_RESET != RESET_REASON_CORE_SW");
99 ESP_STATIC_ASSERT((soc_reset_reason_t)DEEPSLEEP_RESET == RESET_REASON_CORE_DEEP_SLEEP, "DEEPSLEEP_RESET != RESET_REASON_CORE_DEEP_SLEEP");
100 ESP_STATIC_ASSERT((soc_reset_reason_t)TG0WDT_SYS_RESET == RESET_REASON_CORE_MWDT0, "TG0WDT_SYS_RESET != RESET_REASON_CORE_MWDT0");
101 ESP_STATIC_ASSERT((soc_reset_reason_t)TG1WDT_SYS_RESET == RESET_REASON_CORE_MWDT1, "TG1WDT_SYS_RESET != RESET_REASON_CORE_MWDT1");
102 ESP_STATIC_ASSERT((soc_reset_reason_t)RTCWDT_SYS_RESET == RESET_REASON_CORE_RTC_WDT, "RTCWDT_SYS_RESET != RESET_REASON_CORE_RTC_WDT");
103 ESP_STATIC_ASSERT((soc_reset_reason_t)TG0WDT_CPU_RESET == RESET_REASON_CPU0_MWDT0, "TG0WDT_CPU_RESET != RESET_REASON_CPU0_MWDT0");
104 ESP_STATIC_ASSERT((soc_reset_reason_t)RTC_SW_CPU_RESET == RESET_REASON_CPU0_SW, "RTC_SW_CPU_RESET != RESET_REASON_CPU0_SW");
105 ESP_STATIC_ASSERT((soc_reset_reason_t)RTCWDT_CPU_RESET == RESET_REASON_CPU0_RTC_WDT, "RTCWDT_CPU_RESET != RESET_REASON_CPU0_RTC_WDT");
106 ESP_STATIC_ASSERT((soc_reset_reason_t)RTCWDT_BROWN_OUT_RESET == RESET_REASON_SYS_BROWN_OUT, "RTCWDT_BROWN_OUT_RESET != RESET_REASON_SYS_BROWN_OUT");
107 ESP_STATIC_ASSERT((soc_reset_reason_t)RTCWDT_RTC_RESET == RESET_REASON_SYS_RTC_WDT, "RTCWDT_RTC_RESET != RESET_REASON_SYS_RTC_WDT");
108 ESP_STATIC_ASSERT((soc_reset_reason_t)TG1WDT_CPU_RESET == RESET_REASON_CPU0_MWDT1, "TG1WDT_CPU_RESET != RESET_REASON_CPU0_MWDT1");
109 ESP_STATIC_ASSERT((soc_reset_reason_t)SUPER_WDT_RESET == RESET_REASON_SYS_SUPER_WDT, "SUPER_WDT_RESET != RESET_REASON_SYS_SUPER_WDT");
110 ESP_STATIC_ASSERT((soc_reset_reason_t)GLITCH_RTC_RESET == RESET_REASON_SYS_CLK_GLITCH, "GLITCH_RTC_RESET != RESET_REASON_SYS_CLK_GLITCH");
111 ESP_STATIC_ASSERT((soc_reset_reason_t)EFUSE_RESET == RESET_REASON_CORE_EFUSE_CRC, "EFUSE_RESET != RESET_REASON_CORE_EFUSE_CRC");
112
113 typedef enum {
114 NO_SLEEP = 0,
115 EXT_EVENT0_TRIG = BIT0,
116 EXT_EVENT1_TRIG = BIT1,
117 GPIO_TRIG = BIT2,
118 TIMER_EXPIRE = BIT3,
119 SDIO_TRIG = BIT4,
120 MAC_TRIG = BIT5,
121 UART0_TRIG = BIT6,
122 UART1_TRIG = BIT7,
123 TOUCH_TRIG = BIT8,
124 SAR_TRIG = BIT9,
125 BT_TRIG = BIT10,
126 RISCV_TRIG = BIT11,
127 XTAL_DEAD_TRIG = BIT12,
128 RISCV_TRAP_TRIG = BIT13,
129 USB_TRIG = BIT14
130 } WAKEUP_REASON;
131
132 typedef enum {
133 DISEN_WAKEUP = NO_SLEEP,
134 EXT_EVENT0_TRIG_EN = EXT_EVENT0_TRIG,
135 EXT_EVENT1_TRIG_EN = EXT_EVENT1_TRIG,
136 GPIO_TRIG_EN = GPIO_TRIG,
137 TIMER_EXPIRE_EN = TIMER_EXPIRE,
138 SDIO_TRIG_EN = SDIO_TRIG,
139 MAC_TRIG_EN = MAC_TRIG,
140 UART0_TRIG_EN = UART0_TRIG,
141 UART1_TRIG_EN = UART1_TRIG,
142 TOUCH_TRIG_EN = TOUCH_TRIG,
143 SAR_TRIG_EN = SAR_TRIG,
144 BT_TRIG_EN = BT_TRIG,
145 RISCV_TRIG_EN = RISCV_TRIG,
146 XTAL_DEAD_TRIG_EN = XTAL_DEAD_TRIG,
147 RISCV_TRAP_TRIG_EN = RISCV_TRAP_TRIG,
148 USB_TRIG_EN = USB_TRIG
149 } WAKEUP_ENABLE;
150
151 /**
152 * @brief Get the reset reason for CPU.
153 *
154 * @param int cpu_no : CPU no.
155 *
156 * @return RESET_REASON
157 */
158 RESET_REASON rtc_get_reset_reason(int cpu_no);
159
160 /**
161 * @brief Get the wakeup cause for CPU.
162 *
163 * @param int cpu_no : CPU no.
164 *
165 * @return WAKEUP_REASON
166 */
167 WAKEUP_REASON rtc_get_wakeup_cause(void);
168
169
170 /**
171 * @brief Set CRC of Fast RTC memory 0-0x7ff into RTC STORE7.
172 *
173 * @param None
174 *
175 * @return None
176 */
177 void set_rtc_memory_crc(void);
178
179 /**
180 * @brief Suppress ROM log by setting specific RTC control register.
181 * @note This is not a permanent disable of ROM logging since the RTC register can not retain after chip reset.
182 *
183 * @param None
184 *
185 * @return None
186 */
rtc_suppress_rom_log(void)187 static inline void rtc_suppress_rom_log(void)
188 {
189 /* To disable logging in the ROM, only the least significant bit of the register is used,
190 * but since this register is also used to store the frequency of the main crystal (RTC_XTAL_FREQ_REG),
191 * you need to write to this register in the same format.
192 * Namely, the upper 16 bits and lower should be the same.
193 */
194 REG_SET_BIT(RTC_CNTL_STORE4_REG, RTC_DISABLE_ROM_LOG);
195 }
196
197 /**
198 * @brief Fetch entry from RTC memory and RTC STORE reg
199 *
200 * @param uint32_t * entry_addr : the address to save entry
201 *
202 * @param RESET_REASON reset_reason : reset reason this time
203 *
204 * @return None
205 */
206 void rtc_boot_control(uint32_t * entry_addr, RESET_REASON reset_reason);
207
208 /**
209 * @brief Software Reset digital core.
210 *
211 * It is not recommended to use this function in esp-idf, use
212 * esp_restart() instead.
213 *
214 * @param None
215 *
216 * @return None
217 */
218 void software_reset(void);
219
220 /**
221 * @brief Software Reset digital core.
222 *
223 * It is not recommended to use this function in esp-idf, use
224 * esp_restart() instead.
225 *
226 * @param int cpu_no : The CPU to reset, 0 for PRO CPU, 1 for APP CPU.
227 *
228 * @return None
229 */
230 void software_reset_cpu(int cpu_no);
231
232 /**
233 * @}
234 */
235
236 #ifdef __cplusplus
237 }
238 #endif
239
240 #endif /* _ROM_RTC_H_ */
241
