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system: add support for reset reason hint on S3

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This commit is contained in:
Marius Vikhammer 2021-06-09 16:39:10 +08:00
parent 79b5dedeb1
commit f124536948
2 changed files with 12 additions and 1 deletions
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1
components/esp_rom/include/esp32s3/rom/rtc.h
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@ -63,6 +63,7 @@ extern "C" {
#define RTC_XTAL_FREQ_REG RTC_CNTL_STORE4_REG
#define RTC_APB_FREQ_REG RTC_CNTL_STORE5_REG
#define RTC_ENTRY_ADDR_REG RTC_CNTL_STORE6_REG
#define RTC_RESET_CAUSE_REG RTC_CNTL_STORE6_REG
#define RTC_MEMORY_CRC_REG RTC_CNTL_STORE7_REG
#define RTC_DISABLE_ROM_LOG ((1 << 0) | (1 << 16)) //!< Disable logging from the ROM code.

10
components/esp_system/port/soc/esp32s3/reset_reason.c
View File

@ -97,13 +97,23 @@ esp_reset_reason_t esp_reset_reason(void)
/* in IRAM, can be called from panic handler */
void IRAM_ATTR esp_reset_reason_set_hint(esp_reset_reason_t hint)
{
assert((hint & (~RST_REASON_MASK)) == 0);
uint32_t val = hint | (hint << RST_REASON_SHIFT) | RST_REASON_BIT;
REG_WRITE(RTC_RESET_CAUSE_REG, val);
}
/* in IRAM, can be called from panic handler */
esp_reset_reason_t IRAM_ATTR esp_reset_reason_get_hint(void)
{
uint32_t reset_reason_hint = REG_READ(RTC_RESET_CAUSE_REG);
uint32_t high = (reset_reason_hint >> RST_REASON_SHIFT) & RST_REASON_MASK;
uint32_t low = reset_reason_hint & RST_REASON_MASK;
if ((reset_reason_hint & RST_REASON_BIT) == 0 || high != low) {
return ESP_RST_UNKNOWN;
}
return (esp_reset_reason_t) low;
}
static void esp_reset_reason_clear_hint(void)
{
REG_WRITE(RTC_RESET_CAUSE_REG, 0);
}