flipperzero-firmware/firmware/targets/f6/api-hal/api-hal-boot.c

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#include <api-hal-boot.h>
#include <stm32wbxx_ll_rtc.h>
// Boot request enum
#define BOOT_REQUEST_TAINTED 0x00000000
#define BOOT_REQUEST_CLEAN 0xDADEDADE
#define BOOT_REQUEST_DFU 0xDF00B000
void api_hal_boot_init() {
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, BOOT_REQUEST_TAINTED);
}
void api_hal_boot_set_mode(ApiHalBootMode mode) {
if (mode == ApiHalBootModeNormal) {
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, BOOT_REQUEST_CLEAN);
} else if (mode == ApiHalBootModeDFU) {
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, BOOT_REQUEST_DFU);
}
}
void api_hal_boot_set_flags(ApiHalBootFlag flags) {
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR2, flags);
}
ApiHalBootFlag api_hal_boot_get_flags() {
return LL_RTC_BAK_GetRegister(RTC, LL_RTC_BKP_DR2);
}