diff options
Diffstat (limited to 'bsps/arm/imxrt/mcux-sdk/drivers/cdog/fsl_cdog.c')
| -rw-r--r-- | bsps/arm/imxrt/mcux-sdk/drivers/cdog/fsl_cdog.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/mcux-sdk/drivers/cdog/fsl_cdog.c b/bsps/arm/imxrt/mcux-sdk/drivers/cdog/fsl_cdog.c new file mode 100644 index 0000000000..9b985e1cbd --- /dev/null +++ b/bsps/arm/imxrt/mcux-sdk/drivers/cdog/fsl_cdog.c @@ -0,0 +1,314 @@ +/* + * Copyright 2020 NXP + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "fsl_cdog.h" + +/******************************************************************************* + * Definitions + *******************************************************************************/ + +/* Component ID definition, used by tools. */ +#ifndef FSL_COMPONENT_ID +#define FSL_COMPONENT_ID "platform.drivers.cdog" +#endif + +/******************************************************************************* + * Prototypes + ******************************************************************************/ + +/******************************************************************************* + * Code + ******************************************************************************/ + +/*! + * brief Sets the default configuration of CDOG + * + * This function initialize CDOG config structure to default values. + * + * param conf CDOG configuration structure + */ +void CDOG_GetDefaultConfig(cdog_config_t *conf) +{ + /* Default configuration after reset */ + conf->lock = (uint8_t)kCDOG_LockCtrl_Unlock; /* Lock control */ + conf->timeout = (uint8_t)kCDOG_FaultCtrl_NoAction; /* Timeout control */ + conf->miscompare = (uint8_t)kCDOG_FaultCtrl_NoAction; /* Miscompare control */ + conf->sequence = (uint8_t)kCDOG_FaultCtrl_NoAction; /* Sequence control */ + conf->state = (uint8_t)kCDOG_FaultCtrl_NoAction; /* State control */ + conf->address = (uint8_t)kCDOG_FaultCtrl_NoAction; /* Address control */ + conf->irq_pause = (uint8_t)kCDOG_IrqPauseCtrl_Run; /* IRQ pause control */ + conf->debug_halt = (uint8_t)kCDOG_DebugHaltCtrl_Run; /* Debug halt control */ + return; +} + +/*! + * brief Sets secure counter and instruction timer values + * + * This function sets value in RELOAD and START registers for instruction timer. + * + * param base CDOG peripheral base address + * param reload reload value + * param start start value + */ +void CDOG_Start(CDOG_Type *base, uint32_t reload, uint32_t start) +{ + base->RELOAD = reload; + base->START = start; +} + +/*! + * brief Stops secure counter and instruction timer + * + * This function stops instruction timer and secure counter. + * This also change state of CDOG to IDLE. + * + * param base CDOG peripheral base address + * param stop expected value which will be compared with value of secure counter + */ +void CDOG_Stop(CDOG_Type *base, uint32_t stop) +{ + base->STOP = stop; +} + +/*! + * brief Sets secure counter and instruction timer values + * + * This function sets value in STOP, RELOAD and START registers + * for instruction timer and secure counter. + * + * param base CDOG peripheral base address + * param stop expected value which will be compared with value of secure counter + * param reload reload value for instruction timer + * param start start value for secure timer + */ +void CDOG_Set(CDOG_Type *base, uint32_t stop, uint32_t reload, uint32_t start) +{ + base->STOP = stop; + base->RELOAD = reload; + base->START = start; +} + +/*! + * brief Add value to secure counter + * + * This function add specified value to secure counter. + * + * param base CDOG peripheral base address. + * param add Value to be added. + */ +void CDOG_Add(CDOG_Type *base, uint32_t add) +{ + base->ADD = (secure_counter_t)add; +} + +/*! + * brief Add 1 to secure counter + * + * This function add 1 to secure counter. + * + * param base CDOG peripheral base address. + * param add Value to be added. + */ +void CDOG_Add1(CDOG_Type *base) +{ + base->ADD1 = (secure_counter_t)0x1U; +} + +/*! + * brief Add 16 to secure counter + * + * This function add 16 to secure counter. + * + * param base CDOG peripheral base address. + * param add Value to be added. + */ +void CDOG_Add16(CDOG_Type *base) +{ + base->ADD16 = (secure_counter_t)0x1U; +} + +/*! + * brief Add 256 to secure counter + * + * This function add 256 to secure counter. + * + * param base CDOG peripheral base address. + * param add Value to be added. + */ +void CDOG_Add256(CDOG_Type *base) +{ + base->ADD256 = (secure_counter_t)0x1U; +} + +/*! + * brief Substract value to secure counter + * + * This function substract specified value to secure counter. + * + * param base CDOG peripheral base address. + * param sub Value to be substracted. + */ +void CDOG_Sub(CDOG_Type *base, uint32_t sub) +{ + base->SUB = (secure_counter_t)sub; +} + +/*! + * brief Substract 1 from secure counter + * + * This function substract specified 1 from secure counter. + * + * param base CDOG peripheral base address. + */ +void CDOG_Sub1(CDOG_Type *base) +{ + base->SUB1 = (secure_counter_t)0x1U; +} + +/*! + * brief Substract 16 from secure counter + * + * This function substract specified 16 from secure counter. + * + * param base CDOG peripheral base address. + */ +void CDOG_Sub16(CDOG_Type *base) +{ + base->SUB16 = (secure_counter_t)0x1U; +} + +/*! + * brief Substract 256 from secure counter + * + * This function substract specified 256 from secure counter. + * + * param base CDOG peripheral base address. + */ +void CDOG_Sub256(CDOG_Type *base) +{ + base->SUB256 = (secure_counter_t)0x1U; +} + +/*! + * brief Checks secure counter. + * + * This function compares stop value with secure counter value + * by writting to RELOAD refister. + * + * param base CDOG peripheral base address + * param check expected (stop) value. + */ +void CDOG_Check(CDOG_Type *base, uint32_t check) +{ + base->RESTART = check; +} + +/*! + * brief Set the CDOG persistent word. + * + * param base CDOG peripheral base address. + * param value The value to be written. + */ +void CDOG_WritePersistent(CDOG_Type *base, uint32_t value) +{ + base->PERSISTENT = value; +} + +/*! + * brief Get the CDOG persistent word. + * + * param base CDOG peripheral base address. + * return The persistent word. + */ +uint32_t CDOG_ReadPersistent(CDOG_Type *base) +{ + return base->PERSISTENT; +} + +/*! + * brief Initialize CDOG + * + * This function initializes CDOG block and setting. + * + * param base CDOG peripheral base address + * param conf CDOG configuration structure + * return Status of the init operation + */ +status_t CDOG_Init(CDOG_Type *base, cdog_config_t *conf) +{ + /* Ungate clock to CDOG engine and reset it */ +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) +#ifdef CDOG_CLOCKS + CLOCK_EnableClock(kCLOCK_Cdog); +#endif /* CDOG_CLOCKS */ +#endif /* !FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ + +#if !(defined(FSL_FEATURE_CDOG_HAS_NO_RESET) && FSL_FEATURE_CDOG_HAS_NO_RESET) + RESET_PeripheralReset(kCDOG_RST_SHIFT_RSTn); +#endif /* !FSL_FEATURE_CDOG_HAS_NO_RESET */ + + if (base->CONTROL == 0x0U) + { + /* CDOG is not in IDLE mode, which may be cause after SW reset. */ + /* Writing to CONTROL register will trigger fault. */ + return kStatus_Fail; + } + + /* Clear pending errors, otherwise the device will reset */ + /* itself immediately after enable Code Watchdog */ + if ((uint32_t)kCDOG_LockCtrl_Lock == + ((base->CONTROL & CDOG_CONTROL_LOCK_CTRL_MASK) >> CDOG_CONTROL_LOCK_CTRL_SHIFT)) + + { + CDOG->FLAGS = CDOG_FLAGS_TO_FLAG(1U) | CDOG_FLAGS_MISCOM_FLAG(1U) | CDOG_FLAGS_SEQ_FLAG(1U) | + CDOG_FLAGS_CNT_FLAG(1U) | CDOG_FLAGS_STATE_FLAG(1U) | CDOG_FLAGS_ADDR_FLAG(1U) | + CDOG_FLAGS_POR_FLAG(1U); + } + else + { + CDOG->FLAGS = CDOG_FLAGS_TO_FLAG(0U) | CDOG_FLAGS_MISCOM_FLAG(0U) | CDOG_FLAGS_SEQ_FLAG(0U) | + CDOG_FLAGS_CNT_FLAG(0U) | CDOG_FLAGS_STATE_FLAG(0U) | CDOG_FLAGS_ADDR_FLAG(0U) | + CDOG_FLAGS_POR_FLAG(0U); + } + + base->CONTROL = + CDOG_CONTROL_TIMEOUT_CTRL(conf->timeout) | /* Action if the timeout event is triggered */ + CDOG_CONTROL_MISCOMPARE_CTRL(conf->miscompare) | /* Action if the miscompare error event is triggered */ + CDOG_CONTROL_SEQUENCE_CTRL(conf->sequence) | /* Action if the sequence error event is triggered */ + CDOG_CONTROL_STATE_CTRL(conf->state) | /* Action if the state error event is triggered */ + CDOG_CONTROL_ADDRESS_CTRL(conf->address) | /* Action if the address error event is triggered */ + CDOG_CONTROL_IRQ_PAUSE(conf->irq_pause) | /* Pause running during interrupts setup */ + CDOG_CONTROL_DEBUG_HALT_CTRL( + conf->debug_halt) | /* Halt CDOG timer during debug so we have chance to debug code */ + CDOG_CONTROL_LOCK_CTRL(conf->lock); /* Lock control register */ + + NVIC_EnableIRQ(CDOG_IRQn); + + return kStatus_Success; +} + +/*! + * brief Deinitialize CDOG + * + * This function stops CDOG secure counter. + * + * param base CDOG peripheral base address + */ +void CDOG_Deinit(CDOG_Type *base) +{ + NVIC_DisableIRQ(CDOG_IRQn); + +#if !(defined(FSL_FEATURE_CDOG_HAS_NO_RESET) && FSL_FEATURE_CDOG_HAS_NO_RESET) + RESET_SetPeripheralReset(kCDOG_RST_SHIFT_RSTn); +#endif /* !FSL_FEATURE_CDOG_HAS_NO_RESET */ + +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) +#ifdef CDOG_CLOCKS + CLOCK_DisableClock(kCLOCK_Cdog); +#endif /* CDOG_CLOCKS */ +#endif /* !FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ +} |