1706 lines
71 KiB
C
1706 lines
71 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "fsl_trng.h"
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#if defined(FSL_FEATURE_SOC_TRNG_COUNT) && FSL_FEATURE_SOC_TRNG_COUNT
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/*******************************************************************************
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* Definitions
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*******************************************************************************/
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.trng"
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#endif
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/* Default values for user configuration structure.*/
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#if (defined(KW40Z4_SERIES) || defined(KW41Z4_SERIES) || defined(KW31Z4_SERIES) || defined(KW21Z4_SERIES) || \
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defined(MCIMX7U5_M4_SERIES) || defined(KW36Z4_SERIES))
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#define TRNG_USER_CONFIG_DEFAULT_OSC_DIV kTRNG_RingOscDiv8
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#elif(defined(KV56F24_SERIES) || defined(KV58F24_SERIES) || defined(KL28Z7_SERIES) || defined(KL81Z7_SERIES) || \
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defined(KL82Z7_SERIES))
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#define TRNG_USER_CONFIG_DEFAULT_OSC_DIV kTRNG_RingOscDiv4
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#elif defined(K81F25615_SERIES)
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#define TRNG_USER_CONFIG_DEFAULT_OSC_DIV kTRNG_RingOscDiv2
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#else
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#define TRNG_USER_CONFIG_DEFAULT_OSC_DIV kTRNG_RingOscDiv0
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#endif
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#define TRNG_USER_CONFIG_DEFAULT_LOCK 0
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#define TRNG_USER_CONFIG_DEFAULT_ENTROPY_DELAY 3200
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#define TRNG_USER_CONFIG_DEFAULT_SAMPLE_SIZE 2500
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#define TRNG_USER_CONFIG_DEFAULT_SPARSE_BIT_LIMIT 63
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#define TRNG_USER_CONFIG_DEFAULT_RETRY_COUNT 1
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#define TRNG_USER_CONFIG_DEFAULT_RUN_MAX_LIMIT 34
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#define TRNG_USER_CONFIG_DEFAULT_MONOBIT_MAXIMUM 1384
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#define TRNG_USER_CONFIG_DEFAULT_MONOBIT_MINIMUM (TRNG_USER_CONFIG_DEFAULT_MONOBIT_MAXIMUM - 268)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT1_MAXIMUM 405
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT1_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT1_MAXIMUM - 178)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT2_MAXIMUM 220
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT2_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT2_MAXIMUM - 122)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT3_MAXIMUM 125
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT3_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT3_MAXIMUM - 88)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT4_MAXIMUM 75
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT4_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT4_MAXIMUM - 64)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT5_MAXIMUM 47
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT5_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT5_MAXIMUM - 46)
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT6PLUS_MAXIMUM 47
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#define TRNG_USER_CONFIG_DEFAULT_RUNBIT6PLUS_MINIMUM (TRNG_USER_CONFIG_DEFAULT_RUNBIT6PLUS_MAXIMUM - 46)
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#define TRNG_USER_CONFIG_DEFAULT_POKER_MAXIMUM 26912
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#define TRNG_USER_CONFIG_DEFAULT_POKER_MINIMUM (TRNG_USER_CONFIG_DEFAULT_POKER_MAXIMUM - 2467)
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#define TRNG_USER_CONFIG_DEFAULT_FREQUENCY_MAXIMUM 25600
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#define TRNG_USER_CONFIG_DEFAULT_FREQUENCY_MINIMUM 1600
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/*! @brief TRNG work mode */
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typedef enum _trng_work_mode
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{
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kTRNG_WorkModeRun = 0U, /*!< Run Mode. */
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kTRNG_WorkModeProgram = 1U /*!< Program Mode. */
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} trng_work_mode_t;
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/*! @brief TRNG statistical check type*/
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typedef enum _trng_statistical_check
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{
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kTRNG_StatisticalCheckMonobit =
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1U, /*!< Statistical check of number of ones/zero detected during entropy generation. */
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kTRNG_StatisticalCheckRunBit1, /*!< Statistical check of number of runs of length 1 detected during entropy
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generation. */
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kTRNG_StatisticalCheckRunBit2, /*!< Statistical check of number of runs of length 2 detected during entropy
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generation. */
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kTRNG_StatisticalCheckRunBit3, /*!< Statistical check of number of runs of length 3 detected during entropy
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generation. */
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kTRNG_StatisticalCheckRunBit4, /*!< Statistical check of number of runs of length 4 detected during entropy
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generation. */
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kTRNG_StatisticalCheckRunBit5, /*!< Statistical check of number of runs of length 5 detected during entropy
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generation. */
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kTRNG_StatisticalCheckRunBit6Plus, /*!< Statistical check of number of runs of length 6 or more detected during
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entropy generation. */
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kTRNG_StatisticalCheckPoker, /*!< Statistical check of "Poker Test". */
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kTRNG_StatisticalCheckFrequencyCount /*!< Statistical check of entropy sample frequency count. */
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} trng_statistical_check_t;
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/*******************************************************************************
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* TRNG_SCMISC - RNG Statistical Check Miscellaneous Register
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******************************************************************************/
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/*!
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* @name Register TRNG_SCMISC, field RTY_CT[19:16] (RW)
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*
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* RETRY COUNT. If a statistical check fails during the TRNG Entropy Generation,
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* the RTY_CT value indicates the number of times a retry should occur before
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* generating an error. This field is writable only if MCTL[PRGM] bit is 1. This
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* field will read zeroes if MCTL[PRGM] = 0. This field is cleared to 1h by writing
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* the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCMISC_RTY_CT field. */
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#define TRNG_RD_SCMISC_RTY_CT(base) ((TRNG_SCMISC_REG(base) & TRNG_SCMISC_RTY_CT_MASK) >> TRNG_SCMISC_RTY_CT_SHIFT)
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/*! @brief Set the RTY_CT field to a new value. */
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#define TRNG_WR_SCMISC_RTY_CT(base, value) (TRNG_RMW_SCMISC(base, TRNG_SCMISC_RTY_CT_MASK, TRNG_SCMISC_RTY_CT(value)))
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/*@}*/
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/*******************************************************************************
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* TRNG_SCML - RNG Statistical Check Monobit Limit Register
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******************************************************************************/
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/*!
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* @brief TRNG_SCML - RNG Statistical Check Monobit Limit Register (RW)
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*
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* Reset value: 0x010C0568U
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*
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* The RNG Statistical Check Monobit Limit Register defines the allowable
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* maximum and minimum number of ones/zero detected during entropy generation. To pass
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* the test, the number of ones/zeroes generated must be less than the programmed
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* maximum value, and the number of ones/zeroes generated must be greater than
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* (maximum - range). If this test fails, the Retry Counter in SCMISC will be
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* decremented, and a retry will occur if the Retry Count has not reached zero. If
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* the Retry Count has reached zero, an error will be generated. Note that this
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* offset (0xBASE_0620) is used as SCML only if MCTL[PRGM] is 1. If MCTL[PRGM] is 0,
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* this offset is used as SCMC readback register.
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*/
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/*!
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* @name Constants and macros for entire TRNG_SCML register
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*/
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/*@{*/
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#define TRNG_SCML_REG(base) ((base)->SCML)
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#define TRNG_RD_SCML(base) (TRNG_SCML_REG(base))
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#define TRNG_WR_SCML(base, value) (TRNG_SCML_REG(base) = (value))
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#define TRNG_RMW_SCML(base, mask, value) (TRNG_WR_SCML(base, (TRNG_RD_SCML(base) & ~(mask)) | (value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCML, field MONO_MAX[15:0] (RW)
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*
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* Monobit Maximum Limit. Defines the maximum allowable count taken during
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* entropy generation. The number of ones/zeroes detected during entropy generation
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* must be less than MONO_MAX, else a retry or error will occur. This register is
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* cleared to 00056Bh (decimal 1387) by writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCML_MONO_MAX field. */
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#define TRNG_RD_SCML_MONO_MAX(base) ((TRNG_SCML_REG(base) & TRNG_SCML_MONO_MAX_MASK) >> TRNG_SCML_MONO_MAX_SHIFT)
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/*! @brief Set the MONO_MAX field to a new value. */
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#define TRNG_WR_SCML_MONO_MAX(base, value) (TRNG_RMW_SCML(base, TRNG_SCML_MONO_MAX_MASK, TRNG_SCML_MONO_MAX(value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCML, field MONO_RNG[31:16] (RW)
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*
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* Monobit Range. The number of ones/zeroes detected during entropy generation
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* must be greater than MONO_MAX - MONO_RNG, else a retry or error will occur.
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* This register is cleared to 000112h (decimal 274) by writing the MCTL[RST_DEF]
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* bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCML_MONO_RNG field. */
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#define TRNG_RD_SCML_MONO_RNG(base) ((TRNG_SCML_REG(base) & TRNG_SCML_MONO_RNG_MASK) >> TRNG_SCML_MONO_RNG_SHIFT)
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/*! @brief Set the MONO_RNG field to a new value. */
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#define TRNG_WR_SCML_MONO_RNG(base, value) (TRNG_RMW_SCML(base, TRNG_SCML_MONO_RNG_MASK, TRNG_SCML_MONO_RNG(value)))
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/*@}*/
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/*******************************************************************************
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* TRNG_SCR1L - RNG Statistical Check Run Length 1 Limit Register
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******************************************************************************/
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/*!
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* @brief TRNG_SCR1L - RNG Statistical Check Run Length 1 Limit Register (RW)
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*
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* Reset value: 0x00B20195U
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*
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* The RNG Statistical Check Run Length 1 Limit Register defines the allowable
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* maximum and minimum number of runs of length 1 detected during entropy
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* generation. To pass the test, the number of runs of length 1 (for samples of both 0
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* and 1) must be less than the programmed maximum value, and the number of runs of
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* length 1 must be greater than (maximum - range). If this test fails, the
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* Retry Counter in SCMISC will be decremented, and a retry will occur if the Retry
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* Count has not reached zero. If the Retry Count has reached zero, an error will
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* be generated. Note that this address (0xBASE_0624) is used as SCR1L only if
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* MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this address is used as SCR1C readback
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* register.
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*/
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/*!
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* @name Constants and macros for entire TRNG_SCR1L register
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*/
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/*@{*/
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#define TRNG_SCR1L_REG(base) ((base)->SCR1L)
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#define TRNG_RD_SCR1L(base) (TRNG_SCR1L_REG(base))
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#define TRNG_WR_SCR1L(base, value) (TRNG_SCR1L_REG(base) = (value))
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#define TRNG_RMW_SCR1L(base, mask, value) (TRNG_WR_SCR1L(base, (TRNG_RD_SCR1L(base) & ~(mask)) | (value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCR1L, field RUN1_MAX[14:0] (RW)
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*
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* Run Length 1 Maximum Limit. Defines the maximum allowable runs of length 1
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* (for both 0 and 1) detected during entropy generation. The number of runs of
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* length 1 detected during entropy generation must be less than RUN1_MAX, else a
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* retry or error will occur. This register is cleared to 01E5h (decimal 485) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCR1L_RUN1_MAX field. */
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#define TRNG_RD_SCR1L_RUN1_MAX(base) ((TRNG_SCR1L_REG(base) & TRNG_SCR1L_RUN1_MAX_MASK) >> TRNG_SCR1L_RUN1_MAX_SHIFT)
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/*! @brief Set the RUN1_MAX field to a new value. */
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#define TRNG_WR_SCR1L_RUN1_MAX(base, value) (TRNG_RMW_SCR1L(base, TRNG_SCR1L_RUN1_MAX_MASK, TRNG_SCR1L_RUN1_MAX(value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCR1L, field RUN1_RNG[30:16] (RW)
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*
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* Run Length 1 Range. The number of runs of length 1 (for both 0 and 1)
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* detected during entropy generation must be greater than RUN1_MAX - RUN1_RNG, else a
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* retry or error will occur. This register is cleared to 0102h (decimal 258) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCR1L_RUN1_RNG field. */
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#define TRNG_RD_SCR1L_RUN1_RNG(base) ((TRNG_SCR1L_REG(base) & TRNG_SCR1L_RUN1_RNG_MASK) >> TRNG_SCR1L_RUN1_RNG_SHIFT)
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/*! @brief Set the RUN1_RNG field to a new value. */
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#define TRNG_WR_SCR1L_RUN1_RNG(base, value) (TRNG_RMW_SCR1L(base, TRNG_SCR1L_RUN1_RNG_MASK, TRNG_SCR1L_RUN1_RNG(value)))
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/*@}*/
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/*******************************************************************************
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* TRNG_SCR2L - RNG Statistical Check Run Length 2 Limit Register
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******************************************************************************/
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/*!
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* @brief TRNG_SCR2L - RNG Statistical Check Run Length 2 Limit Register (RW)
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*
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* Reset value: 0x007A00DCU
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*
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* The RNG Statistical Check Run Length 2 Limit Register defines the allowable
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* maximum and minimum number of runs of length 2 detected during entropy
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* generation. To pass the test, the number of runs of length 2 (for samples of both 0
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* and 1) must be less than the programmed maximum value, and the number of runs of
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* length 2 must be greater than (maximum - range). If this test fails, the
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* Retry Counter in SCMISC will be decremented, and a retry will occur if the Retry
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* Count has not reached zero. If the Retry Count has reached zero, an error will
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* be generated. Note that this address (0xBASE_0628) is used as SCR2L only if
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* MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this address is used as SCR2C readback
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* register.
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*/
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/*!
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* @name Constants and macros for entire TRNG_SCR2L register
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*/
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/*@{*/
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#define TRNG_SCR2L_REG(base) ((base)->SCR2L)
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#define TRNG_RD_SCR2L(base) (TRNG_SCR2L_REG(base))
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#define TRNG_WR_SCR2L(base, value) (TRNG_SCR2L_REG(base) = (value))
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#define TRNG_RMW_SCR2L(base, mask, value) (TRNG_WR_SCR2L(base, (TRNG_RD_SCR2L(base) & ~(mask)) | (value)))
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/*@}*/
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/*
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* Constants & macros for individual TRNG_SCR2L bitfields
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*/
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/*!
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* @name Register TRNG_SCR2L, field RUN2_MAX[13:0] (RW)
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*
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* Run Length 2 Maximum Limit. Defines the maximum allowable runs of length 2
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* (for both 0 and 1) detected during entropy generation. The number of runs of
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* length 2 detected during entropy generation must be less than RUN2_MAX, else a
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* retry or error will occur. This register is cleared to 00DCh (decimal 220) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCR2L_RUN2_MAX field. */
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#define TRNG_RD_SCR2L_RUN2_MAX(base) ((TRNG_SCR2L_REG(base) & TRNG_SCR2L_RUN2_MAX_MASK) >> TRNG_SCR2L_RUN2_MAX_SHIFT)
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/*! @brief Set the RUN2_MAX field to a new value. */
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#define TRNG_WR_SCR2L_RUN2_MAX(base, value) (TRNG_RMW_SCR2L(base, TRNG_SCR2L_RUN2_MAX_MASK, TRNG_SCR2L_RUN2_MAX(value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCR2L, field RUN2_RNG[29:16] (RW)
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*
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* Run Length 2 Range. The number of runs of length 2 (for both 0 and 1)
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* detected during entropy generation must be greater than RUN2_MAX - RUN2_RNG, else a
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* retry or error will occur. This register is cleared to 007Ah (decimal 122) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCR2L_RUN2_RNG field. */
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#define TRNG_RD_SCR2L_RUN2_RNG(base) ((TRNG_SCR2L_REG(base) & TRNG_SCR2L_RUN2_RNG_MASK) >> TRNG_SCR2L_RUN2_RNG_SHIFT)
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/*! @brief Set the RUN2_RNG field to a new value. */
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#define TRNG_WR_SCR2L_RUN2_RNG(base, value) (TRNG_RMW_SCR2L(base, TRNG_SCR2L_RUN2_RNG_MASK, TRNG_SCR2L_RUN2_RNG(value)))
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/*@}*/
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/*******************************************************************************
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* TRNG_SCR3L - RNG Statistical Check Run Length 3 Limit Register
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******************************************************************************/
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/*!
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* @brief TRNG_SCR3L - RNG Statistical Check Run Length 3 Limit Register (RW)
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*
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* Reset value: 0x0058007DU
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*
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* The RNG Statistical Check Run Length 3 Limit Register defines the allowable
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* maximum and minimum number of runs of length 3 detected during entropy
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* generation. To pass the test, the number of runs of length 3 (for samples of both 0
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* and 1) must be less than the programmed maximum value, and the number of runs of
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* length 3 must be greater than (maximum - range). If this test fails, the
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* Retry Counter in SCMISC will be decremented, and a retry will occur if the Retry
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* Count has not reached zero. If the Retry Count has reached zero, an error will
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* be generated. Note that this address (0xBASE_062C) is used as SCR3L only if
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* MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this address is used as SCR3C readback
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* register.
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*/
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/*!
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* @name Constants and macros for entire TRNG_SCR3L register
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*/
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/*@{*/
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#define TRNG_SCR3L_REG(base) ((base)->SCR3L)
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#define TRNG_RD_SCR3L(base) (TRNG_SCR3L_REG(base))
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#define TRNG_WR_SCR3L(base, value) (TRNG_SCR3L_REG(base) = (value))
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#define TRNG_RMW_SCR3L(base, mask, value) (TRNG_WR_SCR3L(base, (TRNG_RD_SCR3L(base) & ~(mask)) | (value)))
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/*@}*/
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/*
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* Constants & macros for individual TRNG_SCR3L bitfields
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*/
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/*!
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* @name Register TRNG_SCR3L, field RUN3_MAX[12:0] (RW)
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*
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* Run Length 3 Maximum Limit. Defines the maximum allowable runs of length 3
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* (for both 0 and 1) detected during entropy generation. The number of runs of
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* length 3 detected during entropy generation must be less than RUN3_MAX, else a
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* retry or error will occur. This register is cleared to 007Dh (decimal 125) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
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/*! @brief Read current value of the TRNG_SCR3L_RUN3_MAX field. */
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#define TRNG_RD_SCR3L_RUN3_MAX(base) ((TRNG_SCR3L_REG(base) & TRNG_SCR3L_RUN3_MAX_MASK) >> TRNG_SCR3L_RUN3_MAX_SHIFT)
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/*! @brief Set the RUN3_MAX field to a new value. */
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#define TRNG_WR_SCR3L_RUN3_MAX(base, value) (TRNG_RMW_SCR3L(base, TRNG_SCR3L_RUN3_MAX_MASK, TRNG_SCR3L_RUN3_MAX(value)))
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/*@}*/
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/*!
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* @name Register TRNG_SCR3L, field RUN3_RNG[28:16] (RW)
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*
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* Run Length 3 Range. The number of runs of length 3 (for both 0 and 1)
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* detected during entropy generation must be greater than RUN3_MAX - RUN3_RNG, else a
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* retry or error will occur. This register is cleared to 0058h (decimal 88) by
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* writing the MCTL[RST_DEF] bit to 1.
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*/
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/*@{*/
|
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/*! @brief Read current value of the TRNG_SCR3L_RUN3_RNG field. */
|
|
#define TRNG_RD_SCR3L_RUN3_RNG(base) ((TRNG_SCR3L_REG(base) & TRNG_SCR3L_RUN3_RNG_MASK) >> TRNG_SCR3L_RUN3_RNG_SHIFT)
|
|
|
|
/*! @brief Set the RUN3_RNG field to a new value. */
|
|
#define TRNG_WR_SCR3L_RUN3_RNG(base, value) (TRNG_RMW_SCR3L(base, TRNG_SCR3L_RUN3_RNG_MASK, TRNG_SCR3L_RUN3_RNG(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SCR4L - RNG Statistical Check Run Length 4 Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SCR4L - RNG Statistical Check Run Length 4 Limit Register (RW)
|
|
*
|
|
* Reset value: 0x0040004BU
|
|
*
|
|
* The RNG Statistical Check Run Length 4 Limit Register defines the allowable
|
|
* maximum and minimum number of runs of length 4 detected during entropy
|
|
* generation. To pass the test, the number of runs of length 4 (for samples of both 0
|
|
* and 1) must be less than the programmed maximum value, and the number of runs of
|
|
* length 4 must be greater than (maximum - range). If this test fails, the
|
|
* Retry Counter in SCMISC will be decremented, and a retry will occur if the Retry
|
|
* Count has not reached zero. If the Retry Count has reached zero, an error will
|
|
* be generated. Note that this address (0xBASE_0630) is used as SCR4L only if
|
|
* MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this address is used as SCR4C readback
|
|
* register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SCR4L register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SCR4L_REG(base) ((base)->SCR4L)
|
|
#define TRNG_RD_SCR4L(base) (TRNG_SCR4L_REG(base))
|
|
#define TRNG_WR_SCR4L(base, value) (TRNG_SCR4L_REG(base) = (value))
|
|
#define TRNG_RMW_SCR4L(base, mask, value) (TRNG_WR_SCR4L(base, (TRNG_RD_SCR4L(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SCR4L bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR4L, field RUN4_MAX[11:0] (RW)
|
|
*
|
|
* Run Length 4 Maximum Limit. Defines the maximum allowable runs of length 4
|
|
* (for both 0 and 1) detected during entropy generation. The number of runs of
|
|
* length 4 detected during entropy generation must be less than RUN4_MAX, else a
|
|
* retry or error will occur. This register is cleared to 004Bh (decimal 75) by
|
|
* writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR4L_RUN4_MAX field. */
|
|
#define TRNG_RD_SCR4L_RUN4_MAX(base) ((TRNG_SCR4L_REG(base) & TRNG_SCR4L_RUN4_MAX_MASK) >> TRNG_SCR4L_RUN4_MAX_SHIFT)
|
|
|
|
/*! @brief Set the RUN4_MAX field to a new value. */
|
|
#define TRNG_WR_SCR4L_RUN4_MAX(base, value) (TRNG_RMW_SCR4L(base, TRNG_SCR4L_RUN4_MAX_MASK, TRNG_SCR4L_RUN4_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR4L, field RUN4_RNG[27:16] (RW)
|
|
*
|
|
* Run Length 4 Range. The number of runs of length 4 (for both 0 and 1)
|
|
* detected during entropy generation must be greater than RUN4_MAX - RUN4_RNG, else a
|
|
* retry or error will occur. This register is cleared to 0040h (decimal 64) by
|
|
* writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR4L_RUN4_RNG field. */
|
|
#define TRNG_RD_SCR4L_RUN4_RNG(base) ((TRNG_SCR4L_REG(base) & TRNG_SCR4L_RUN4_RNG_MASK) >> TRNG_SCR4L_RUN4_RNG_SHIFT)
|
|
|
|
/*! @brief Set the RUN4_RNG field to a new value. */
|
|
#define TRNG_WR_SCR4L_RUN4_RNG(base, value) (TRNG_RMW_SCR4L(base, TRNG_SCR4L_RUN4_RNG_MASK, TRNG_SCR4L_RUN4_RNG(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SCR5L - RNG Statistical Check Run Length 5 Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SCR5L - RNG Statistical Check Run Length 5 Limit Register (RW)
|
|
*
|
|
* Reset value: 0x002E002FU
|
|
*
|
|
* The RNG Statistical Check Run Length 5 Limit Register defines the allowable
|
|
* maximum and minimum number of runs of length 5 detected during entropy
|
|
* generation. To pass the test, the number of runs of length 5 (for samples of both 0
|
|
* and 1) must be less than the programmed maximum value, and the number of runs of
|
|
* length 5 must be greater than (maximum - range). If this test fails, the
|
|
* Retry Counter in SCMISC will be decremented, and a retry will occur if the Retry
|
|
* Count has not reached zero. If the Retry Count has reached zero, an error will
|
|
* be generated. Note that this address (0xBASE_0634) is used as SCR5L only if
|
|
* MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this address is used as SCR5C readback
|
|
* register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SCR5L register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SCR5L_REG(base) ((base)->SCR5L)
|
|
#define TRNG_RD_SCR5L(base) (TRNG_SCR5L_REG(base))
|
|
#define TRNG_WR_SCR5L(base, value) (TRNG_SCR5L_REG(base) = (value))
|
|
#define TRNG_RMW_SCR5L(base, mask, value) (TRNG_WR_SCR5L(base, (TRNG_RD_SCR5L(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SCR5L bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR5L, field RUN5_MAX[10:0] (RW)
|
|
*
|
|
* Run Length 5 Maximum Limit. Defines the maximum allowable runs of length 5
|
|
* (for both 0 and 1) detected during entropy generation. The number of runs of
|
|
* length 5 detected during entropy generation must be less than RUN5_MAX, else a
|
|
* retry or error will occur. This register is cleared to 002Fh (decimal 47) by
|
|
* writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR5L_RUN5_MAX field. */
|
|
#define TRNG_RD_SCR5L_RUN5_MAX(base) ((TRNG_SCR5L_REG(base) & TRNG_SCR5L_RUN5_MAX_MASK) >> TRNG_SCR5L_RUN5_MAX_SHIFT)
|
|
|
|
/*! @brief Set the RUN5_MAX field to a new value. */
|
|
#define TRNG_WR_SCR5L_RUN5_MAX(base, value) (TRNG_RMW_SCR5L(base, TRNG_SCR5L_RUN5_MAX_MASK, TRNG_SCR5L_RUN5_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR5L, field RUN5_RNG[26:16] (RW)
|
|
*
|
|
* Run Length 5 Range. The number of runs of length 5 (for both 0 and 1)
|
|
* detected during entropy generation must be greater than RUN5_MAX - RUN5_RNG, else a
|
|
* retry or error will occur. This register is cleared to 002Eh (decimal 46) by
|
|
* writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR5L_RUN5_RNG field. */
|
|
#define TRNG_RD_SCR5L_RUN5_RNG(base) ((TRNG_SCR5L_REG(base) & TRNG_SCR5L_RUN5_RNG_MASK) >> TRNG_SCR5L_RUN5_RNG_SHIFT)
|
|
|
|
/*! @brief Set the RUN5_RNG field to a new value. */
|
|
#define TRNG_WR_SCR5L_RUN5_RNG(base, value) (TRNG_RMW_SCR5L(base, TRNG_SCR5L_RUN5_RNG_MASK, TRNG_SCR5L_RUN5_RNG(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SCR6PL - RNG Statistical Check Run Length 6+ Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SCR6PL - RNG Statistical Check Run Length 6+ Limit Register (RW)
|
|
*
|
|
* Reset value: 0x002E002FU
|
|
*
|
|
* The RNG Statistical Check Run Length 6+ Limit Register defines the allowable
|
|
* maximum and minimum number of runs of length 6 or more detected during entropy
|
|
* generation. To pass the test, the number of runs of length 6 or more (for
|
|
* samples of both 0 and 1) must be less than the programmed maximum value, and the
|
|
* number of runs of length 6 or more must be greater than (maximum - range). If
|
|
* this test fails, the Retry Counter in SCMISC will be decremented, and a retry
|
|
* will occur if the Retry Count has not reached zero. If the Retry Count has
|
|
* reached zero, an error will be generated. Note that this offset (0xBASE_0638) is
|
|
* used as SCR6PL only if MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this offset is
|
|
* used as SCR6PC readback register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SCR6PL register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SCR6PL_REG(base) ((base)->SCR6PL)
|
|
#define TRNG_RD_SCR6PL(base) (TRNG_SCR6PL_REG(base))
|
|
#define TRNG_WR_SCR6PL(base, value) (TRNG_SCR6PL_REG(base) = (value))
|
|
#define TRNG_RMW_SCR6PL(base, mask, value) (TRNG_WR_SCR6PL(base, (TRNG_RD_SCR6PL(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SCR6PL bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR6PL, field RUN6P_MAX[10:0] (RW)
|
|
*
|
|
* Run Length 6+ Maximum Limit. Defines the maximum allowable runs of length 6
|
|
* or more (for both 0 and 1) detected during entropy generation. The number of
|
|
* runs of length 6 or more detected during entropy generation must be less than
|
|
* RUN6P_MAX, else a retry or error will occur. This register is cleared to 002Fh
|
|
* (decimal 47) by writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR6PL_RUN6P_MAX field. */
|
|
#define TRNG_RD_SCR6PL_RUN6P_MAX(base) \
|
|
((TRNG_SCR6PL_REG(base) & TRNG_SCR6PL_RUN6P_MAX_MASK) >> TRNG_SCR6PL_RUN6P_MAX_SHIFT)
|
|
|
|
/*! @brief Set the RUN6P_MAX field to a new value. */
|
|
#define TRNG_WR_SCR6PL_RUN6P_MAX(base, value) \
|
|
(TRNG_RMW_SCR6PL(base, TRNG_SCR6PL_RUN6P_MAX_MASK, TRNG_SCR6PL_RUN6P_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCR6PL, field RUN6P_RNG[26:16] (RW)
|
|
*
|
|
* Run Length 6+ Range. The number of runs of length 6 or more (for both 0 and
|
|
* 1) detected during entropy generation must be greater than RUN6P_MAX -
|
|
* RUN6P_RNG, else a retry or error will occur. This register is cleared to 002Eh
|
|
* (decimal 46) by writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCR6PL_RUN6P_RNG field. */
|
|
#define TRNG_RD_SCR6PL_RUN6P_RNG(base) \
|
|
((TRNG_SCR6PL_REG(base) & TRNG_SCR6PL_RUN6P_RNG_MASK) >> TRNG_SCR6PL_RUN6P_RNG_SHIFT)
|
|
|
|
/*! @brief Set the RUN6P_RNG field to a new value. */
|
|
#define TRNG_WR_SCR6PL_RUN6P_RNG(base, value) \
|
|
(TRNG_RMW_SCR6PL(base, TRNG_SCR6PL_RUN6P_RNG_MASK, TRNG_SCR6PL_RUN6P_RNG(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_PKRMAX - RNG Poker Maximum Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_PKRMAX - RNG Poker Maximum Limit Register (RW)
|
|
*
|
|
* Reset value: 0x00006920U
|
|
*
|
|
* The RNG Poker Maximum Limit Register defines Maximum Limit allowable during
|
|
* the TRNG Statistical Check Poker Test. Note that this offset (0xBASE_060C) is
|
|
* used as PKRMAX only if MCTL[PRGM] is 1. If MCTL[PRGM] is 0, this offset is used
|
|
* as the PKRSQ readback register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_PKRMAX register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_PKRMAX_REG(base) ((base)->PKRMAX)
|
|
#define TRNG_RD_PKRMAX(base) (TRNG_PKRMAX_REG(base))
|
|
#define TRNG_WR_PKRMAX(base, value) (TRNG_PKRMAX_REG(base) = (value))
|
|
#define TRNG_RMW_PKRMAX(base, mask, value) (TRNG_WR_PKRMAX(base, (TRNG_RD_PKRMAX(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_PKRMAX bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_PKRMAX, field PKR_MAX[23:0] (RW)
|
|
*
|
|
* Poker Maximum Limit. During the TRNG Statistical Checks, a "Poker Test" is
|
|
* run which requires a maximum and minimum limit. The maximum allowable result is
|
|
* programmed in the PKRMAX[PKR_MAX] register. This field is writable only if
|
|
* MCTL[PRGM] bit is 1. This register is cleared to 006920h (decimal 26912) by
|
|
* writing the MCTL[RST_DEF] bit to 1. Note that the PKRMAX and PKRRNG registers
|
|
* combined are used to define the minimum allowable Poker result, which is PKR_MAX -
|
|
* PKR_RNG + 1. Note that if MCTL[PRGM] bit is 0, this register address is used
|
|
* to read the Poker Test Square Calculation result in register PKRSQ, as defined
|
|
* in the following section.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_PKRMAX_PKR_MAX field. */
|
|
#define TRNG_RD_PKRMAX_PKR_MAX(base) ((TRNG_PKRMAX_REG(base) & TRNG_PKRMAX_PKR_MAX_MASK) >> TRNG_PKRMAX_PKR_MAX_SHIFT)
|
|
|
|
/*! @brief Set the PKR_MAX field to a new value. */
|
|
#define TRNG_WR_PKRMAX_PKR_MAX(base, value) \
|
|
(TRNG_RMW_PKRMAX(base, TRNG_PKRMAX_PKR_MAX_MASK, TRNG_PKRMAX_PKR_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_PKRRNG - RNG Poker Range Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_PKRRNG - RNG Poker Range Register (RW)
|
|
*
|
|
* Reset value: 0x000009A3U
|
|
*
|
|
* The RNG Poker Range Register defines the difference between the TRNG Poker
|
|
* Maximum Limit and the minimum limit. These limits are used during the TRNG
|
|
* Statistical Check Poker Test.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_PKRRNG register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_PKRRNG_REG(base) ((base)->PKRRNG)
|
|
#define TRNG_RD_PKRRNG(base) (TRNG_PKRRNG_REG(base))
|
|
#define TRNG_WR_PKRRNG(base, value) (TRNG_PKRRNG_REG(base) = (value))
|
|
#define TRNG_RMW_PKRRNG(base, mask, value) (TRNG_WR_PKRRNG(base, (TRNG_RD_PKRRNG(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_PKRRNG bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_PKRRNG, field PKR_RNG[15:0] (RW)
|
|
*
|
|
* Poker Range. During the TRNG Statistical Checks, a "Poker Test" is run which
|
|
* requires a maximum and minimum limit. The maximum is programmed in the
|
|
* RTPKRMAX[PKR_MAX] register, and the minimum is derived by subtracting the PKR_RNG
|
|
* value from the programmed maximum value. This field is writable only if
|
|
* MCTL[PRGM] bit is 1. This field will read zeroes if MCTL[PRGM] = 0. This field is
|
|
* cleared to 09A3h (decimal 2467) by writing the MCTL[RST_DEF] bit to 1. Note that
|
|
* the minimum allowable Poker result is PKR_MAX - PKR_RNG + 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_PKRRNG_PKR_RNG field. */
|
|
#define TRNG_RD_PKRRNG_PKR_RNG(base) ((TRNG_PKRRNG_REG(base) & TRNG_PKRRNG_PKR_RNG_MASK) >> TRNG_PKRRNG_PKR_RNG_SHIFT)
|
|
|
|
/*! @brief Set the PKR_RNG field to a new value. */
|
|
#define TRNG_WR_PKRRNG_PKR_RNG(base, value) \
|
|
(TRNG_RMW_PKRRNG(base, TRNG_PKRRNG_PKR_RNG_MASK, TRNG_PKRRNG_PKR_RNG(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_FRQMAX - RNG Frequency Count Maximum Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_FRQMAX - RNG Frequency Count Maximum Limit Register (RW)
|
|
*
|
|
* Reset value: 0x00006400U
|
|
*
|
|
* The RNG Frequency Count Maximum Limit Register defines the maximum allowable
|
|
* count taken by the Entropy sample counter during each Entropy sample. During
|
|
* any sample period, if the count is greater than this programmed maximum, a
|
|
* Frequency Count Fail is flagged in MCTL[FCT_FAIL] and an error is generated. Note
|
|
* that this address (061C) is used as FRQMAX only if MCTL[PRGM] is 1. If
|
|
* MCTL[PRGM] is 0, this address is used as FRQCNT readback register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_FRQMAX register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_FRQMAX_REG(base) ((base)->FRQMAX)
|
|
#define TRNG_RD_FRQMAX(base) (TRNG_FRQMAX_REG(base))
|
|
#define TRNG_WR_FRQMAX(base, value) (TRNG_FRQMAX_REG(base) = (value))
|
|
#define TRNG_RMW_FRQMAX(base, mask, value) (TRNG_WR_FRQMAX(base, (TRNG_RD_FRQMAX(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_FRQMAX bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_FRQMAX, field FRQ_MAX[21:0] (RW)
|
|
*
|
|
* Frequency Counter Maximum Limit. Defines the maximum allowable count taken
|
|
* during each entropy sample. This field is writable only if MCTL[PRGM] bit is 1.
|
|
* This register is cleared to 000640h by writing the MCTL[RST_DEF] bit to 1.
|
|
* Note that if MCTL[PRGM] bit is 0, this register address is used to read the
|
|
* Frequency Count result in register FRQCNT, as defined in the following section.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_FRQMAX_FRQ_MAX field. */
|
|
#define TRNG_RD_FRQMAX_FRQ_MAX(base) ((TRNG_FRQMAX_REG(base) & TRNG_FRQMAX_FRQ_MAX_MASK) >> TRNG_FRQMAX_FRQ_MAX_SHIFT)
|
|
|
|
/*! @brief Set the FRQ_MAX field to a new value. */
|
|
#define TRNG_WR_FRQMAX_FRQ_MAX(base, value) \
|
|
(TRNG_RMW_FRQMAX(base, TRNG_FRQMAX_FRQ_MAX_MASK, TRNG_FRQMAX_FRQ_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_FRQMIN - RNG Frequency Count Minimum Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_FRQMIN - RNG Frequency Count Minimum Limit Register (RW)
|
|
*
|
|
* Reset value: 0x00000640U
|
|
*
|
|
* The RNG Frequency Count Minimum Limit Register defines the minimum allowable
|
|
* count taken by the Entropy sample counter during each Entropy sample. During
|
|
* any sample period, if the count is less than this programmed minimum, a
|
|
* Frequency Count Fail is flagged in MCTL[FCT_FAIL] and an error is generated.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_FRQMIN register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_FRQMIN_REG(base) ((base)->FRQMIN)
|
|
#define TRNG_RD_FRQMIN(base) (TRNG_FRQMIN_REG(base))
|
|
#define TRNG_WR_FRQMIN(base, value) (TRNG_FRQMIN_REG(base) = (value))
|
|
#define TRNG_RMW_FRQMIN(base, mask, value) (TRNG_WR_FRQMIN(base, (TRNG_RD_FRQMIN(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_FRQMIN bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_FRQMIN, field FRQ_MIN[21:0] (RW)
|
|
*
|
|
* Frequency Count Minimum Limit. Defines the minimum allowable count taken
|
|
* during each entropy sample. This field is writable only if MCTL[PRGM] bit is 1.
|
|
* This field will read zeroes if MCTL[PRGM] = 0. This field is cleared to 0000h64
|
|
* by writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_FRQMIN_FRQ_MIN field. */
|
|
#define TRNG_RD_FRQMIN_FRQ_MIN(base) ((TRNG_FRQMIN_REG(base) & TRNG_FRQMIN_FRQ_MIN_MASK) >> TRNG_FRQMIN_FRQ_MIN_SHIFT)
|
|
|
|
/*! @brief Set the FRQ_MIN field to a new value. */
|
|
#define TRNG_WR_FRQMIN_FRQ_MIN(base, value) \
|
|
(TRNG_RMW_FRQMIN(base, TRNG_FRQMIN_FRQ_MIN_MASK, TRNG_FRQMIN_FRQ_MIN(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_MCTL - RNG Miscellaneous Control Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_MCTL - RNG Miscellaneous Control Register (RW)
|
|
*
|
|
* Reset value: 0x00012001U
|
|
*
|
|
* This register is intended to be used for programming, configuring and testing
|
|
* the RNG. It is the main register to read/write, in order to enable Entropy
|
|
* generation, to stop entropy generation and to block access to entropy registers.
|
|
* This is done via the special TRNG_ACC and PRGM bits below. The RNG
|
|
* Miscellaneous Control Register is a read/write register used to control the RNG's True
|
|
* Random Number Generator (TRNG) access, operation and test. Note that in many
|
|
* cases two RNG registers share the same address, and a particular register at the
|
|
* shared address is selected based upon the value in the PRGM field of the MCTL
|
|
* register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_MCTL register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_MCTL_REG(base) ((base)->MCTL)
|
|
#define TRNG_RD_MCTL(base) (TRNG_MCTL_REG(base))
|
|
#define TRNG_WR_MCTL(base, value) (TRNG_MCTL_REG(base) = (value))
|
|
#define TRNG_RMW_MCTL(base, mask, value) (TRNG_WR_MCTL(base, (TRNG_RD_MCTL(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field FOR_SCLK[7] (RW)
|
|
*
|
|
* Force System Clock. If set, the system clock is used to operate the TRNG,
|
|
* instead of the ring oscillator. This is for test use only, and indeterminate
|
|
* results may occur. This bit is writable only if PRGM bit is 1, or PRGM bit is
|
|
* being written to 1 simultaneously to writing this bit. This bit is cleared by
|
|
* writing the RST_DEF bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_FOR_SCLK field. */
|
|
#define TRNG_RD_MCTL_FOR_SCLK(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_FOR_SCLK_MASK) >> TRNG_MCTL_FOR_SCLK_SHIFT)
|
|
|
|
/*! @brief Set the FOR_SCLK field to a new value. */
|
|
#define TRNG_WR_MCTL_FOR_SCLK(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_FOR_SCLK_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_FOR_SCLK(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field OSC_DIV[3:2] (RW)
|
|
*
|
|
* Oscillator Divide. Determines the amount of dividing done to the ring
|
|
* oscillator before it is used by the TRNG.This field is writable only if PRGM bit is
|
|
* 1, or PRGM bit is being written to 1 simultaneously to writing this field. This
|
|
* field is cleared to 00 by writing the RST_DEF bit to 1.
|
|
*
|
|
* Values:
|
|
* - 0b00 - use ring oscillator with no divide
|
|
* - 0b01 - use ring oscillator divided-by-2
|
|
* - 0b10 - use ring oscillator divided-by-4
|
|
* - 0b11 - use ring oscillator divided-by-8
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_OSC_DIV field. */
|
|
#define TRNG_RD_MCTL_OSC_DIV(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_OSC_DIV_MASK) >> TRNG_MCTL_OSC_DIV_SHIFT)
|
|
|
|
/*! @brief Set the OSC_DIV field to a new value. */
|
|
#define TRNG_WR_MCTL_OSC_DIV(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_OSC_DIV_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_OSC_DIV(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field SAMP_MODE[1:0] (RW)
|
|
*
|
|
* Sample Mode. Determines the method of sampling the ring oscillator while
|
|
* generating the Entropy value:This field is writable only if PRGM bit is 1, or PRGM
|
|
* bit is being written to 1 simultaneously with writing this field. This field
|
|
* is cleared to 01 by writing the RST_DEF bit to 1.
|
|
*
|
|
* Values:
|
|
* - 0b00 - use Von Neumann data into both Entropy shifter and Statistical
|
|
* Checker
|
|
* - 0b01 - use raw data into both Entropy shifter and Statistical Checker
|
|
* - 0b10 - use Von Neumann data into Entropy shifter. Use raw data into
|
|
* Statistical Checker
|
|
* - 0b11 - reserved.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_SAMP_MODE field. */
|
|
#define TRNG_RD_MCTL_SAMP_MODE(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_SAMP_MODE_MASK) >> TRNG_MCTL_SAMP_MODE_SHIFT)
|
|
|
|
/*! @brief Set the SAMP_MODE field to a new value. */
|
|
#define TRNG_WR_MCTL_SAMP_MODE(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_SAMP_MODE_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_SAMP_MODE(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field PRGM[16] (RW)
|
|
*
|
|
* Programming Mode Select. When this bit is 1, the TRNG is in Program Mode,
|
|
* otherwise it is in Run Mode. No Entropy value will be generated while the TRNG is
|
|
* in Program Mode. Note that different RNG registers are accessible at the same
|
|
* address depending on whether PRGM is set to 1 or 0. This is noted in the RNG
|
|
* register descriptions.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_PRGM field. */
|
|
#define TRNG_RD_MCTL_PRGM(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_PRGM_MASK) >> TRNG_MCTL_PRGM_SHIFT)
|
|
|
|
/*! @brief Set the PRGM field to a new value. */
|
|
#define TRNG_WR_MCTL_PRGM(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_PRGM_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_PRGM(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field RST_DEF[6] (WO)
|
|
*
|
|
* Reset Defaults. Writing a 1 to this bit clears various TRNG registers, and
|
|
* bits within registers, to their default state. This bit is writable only if PRGM
|
|
* bit is 1, or PRGM bit is being written to 1 simultaneously to writing this
|
|
* bit. Reading this bit always produces a 0.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Set the RST_DEF field to a new value. */
|
|
#define TRNG_WR_MCTL_RST_DEF(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_RST_DEF_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_RST_DEF(value)))
|
|
/*@}*/
|
|
|
|
#if !(defined(FSL_FEATURE_TRNG_HAS_NO_TRNG_ACC) && (FSL_FEATURE_TRNG_HAS_NO_TRNG_ACC > 0))
|
|
/*!
|
|
* @name Register TRNG_MCTL, field TRNG_ACC[5] (RW)
|
|
*
|
|
* TRNG Access Mode. If this bit is set to 1, the TRNG will generate an Entropy
|
|
* value that can be read via the ENT0-ENT15 registers. The Entropy value may be
|
|
* read once the ENT VAL bit is asserted. Also see ENTa register descriptions
|
|
* (For a = 0 to 15).
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_TRNG_ACC field. */
|
|
#define TRNG_RD_MCTL_TRNG_ACC(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_TRNG_ACC_MASK) >> TRNG_MCTL_TRNG_ACC_SHIFT)
|
|
|
|
/*! @brief Set the TRNG_ACC field to a new value. */
|
|
#define TRNG_WR_MCTL_TRNG_ACC(base, value) \
|
|
(TRNG_RMW_MCTL(base, (TRNG_MCTL_TRNG_ACC_MASK | TRNG_MCTL_ERR_MASK), TRNG_MCTL_TRNG_ACC(value)))
|
|
/*@}*/
|
|
#endif
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field TSTOP_OK[13] (RO)
|
|
*
|
|
* TRNG_OK_TO_STOP. Software should check that this bit is a 1 before
|
|
* transitioning RNG to low power mode (RNG clock stopped). RNG turns on the TRNG
|
|
* free-running ring oscillator whenever new entropy is being generated and turns off the
|
|
* ring oscillator when entropy generation is complete. If the RNG clock is
|
|
* stopped while the TRNG ring oscillator is running, the oscillator will continue
|
|
* running even though the RNG clock is stopped. TSTOP_OK is asserted when the TRNG
|
|
* ring oscillator is not running. and therefore it is ok to stop the RNG clock.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_TSTOP_OK field. */
|
|
#define TRNG_RD_MCTL_TSTOP_OK(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_TSTOP_OK_MASK) >> TRNG_MCTL_TSTOP_OK_SHIFT)
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field ENT_VAL[10] (RO)
|
|
*
|
|
* Read only: Entropy Valid. Will assert only if TRNG ACC bit is set, and then
|
|
* after an entropy value is generated. Will be cleared when ENT15 is read. (ENT0
|
|
* through ENT14 should be read before reading ENT15).
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_ENT_VAL field. */
|
|
#define TRNG_RD_MCTL_ENT_VAL(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_ENT_VAL_MASK) >> TRNG_MCTL_ENT_VAL_SHIFT)
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_MCTL, field ERR[12] (W1C)
|
|
*
|
|
* Read: Error status. 1 = error detected. 0 = no error.Write: Write 1 to clear
|
|
* errors. Writing 0 has no effect.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_MCTL_ERR field. */
|
|
#define TRNG_RD_MCTL_ERR(base) ((TRNG_MCTL_REG(base) & TRNG_MCTL_ERR_MASK) >> TRNG_MCTL_ERR_SHIFT)
|
|
|
|
/*! @brief Set the ERR field to a new value. */
|
|
#define TRNG_WR_MCTL_ERR(base, value) (TRNG_RMW_MCTL(base, TRNG_MCTL_ERR_MASK, TRNG_MCTL_ERR(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SDCTL - RNG Seed Control Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SDCTL - RNG Seed Control Register (RW)
|
|
*
|
|
* Reset value: 0x0C8009C4U
|
|
*
|
|
* The RNG Seed Control Register contains two fields. One field defines the
|
|
* length (in system clocks) of each Entropy sample (ENT_DLY), and the other field
|
|
* indicates the number of samples that will taken during each TRNG Entropy
|
|
* generation (SAMP_SIZE).
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SDCTL register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SDCTL_REG(base) ((base)->SDCTL)
|
|
#define TRNG_RD_SDCTL(base) (TRNG_SDCTL_REG(base))
|
|
#define TRNG_WR_SDCTL(base, value) (TRNG_SDCTL_REG(base) = (value))
|
|
#define TRNG_RMW_SDCTL(base, mask, value) (TRNG_WR_SDCTL(base, (TRNG_RD_SDCTL(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SDCTL bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SDCTL, field SAMP_SIZE[15:0] (RW)
|
|
*
|
|
* Sample Size. Defines the total number of Entropy samples that will be taken
|
|
* during Entropy generation. This field is writable only if MCTL[PRGM] bit is 1.
|
|
* This field will read zeroes if MCTL[PRGM] = 0. This field is cleared to 09C4h
|
|
* (decimal 2500) by writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SDCTL_SAMP_SIZE field. */
|
|
#define TRNG_RD_SDCTL_SAMP_SIZE(base) ((TRNG_SDCTL_REG(base) & TRNG_SDCTL_SAMP_SIZE_MASK) >> TRNG_SDCTL_SAMP_SIZE_SHIFT)
|
|
|
|
/*! @brief Set the SAMP_SIZE field to a new value. */
|
|
#define TRNG_WR_SDCTL_SAMP_SIZE(base, value) \
|
|
(TRNG_RMW_SDCTL(base, TRNG_SDCTL_SAMP_SIZE_MASK, TRNG_SDCTL_SAMP_SIZE(value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SDCTL, field ENT_DLY[31:16] (RW)
|
|
*
|
|
* Entropy Delay. Defines the length (in system clocks) of each Entropy sample
|
|
* taken. This field is writable only if MCTL[PRGM] bit is 1. This field will read
|
|
* zeroes if MCTL[PRGM] = 0. This field is cleared to 0C80h (decimal 3200) by
|
|
* writing the MCTL[RST_DEF] bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SDCTL_ENT_DLY field. */
|
|
#define TRNG_RD_SDCTL_ENT_DLY(base) ((TRNG_SDCTL_REG(base) & TRNG_SDCTL_ENT_DLY_MASK) >> TRNG_SDCTL_ENT_DLY_SHIFT)
|
|
|
|
/*! @brief Set the ENT_DLY field to a new value. */
|
|
#define TRNG_WR_SDCTL_ENT_DLY(base, value) (TRNG_RMW_SDCTL(base, TRNG_SDCTL_ENT_DLY_MASK, TRNG_SDCTL_ENT_DLY(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SBLIM - RNG Sparse Bit Limit Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SBLIM - RNG Sparse Bit Limit Register (RW)
|
|
*
|
|
* Reset value: 0x0000003FU
|
|
*
|
|
* The RNG Sparse Bit Limit Register is used when Von Neumann sampling is
|
|
* selected during Entropy Generation. It defines the maximum number of consecutive Von
|
|
* Neumann samples which may be discarded before an error is generated. Note
|
|
* that this address (0xBASE_0614) is used as SBLIM only if MCTL[PRGM] is 1. If
|
|
* MCTL[PRGM] is 0, this address is used as TOTSAM readback register.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SBLIM register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SBLIM_REG(base) ((base)->SBLIM)
|
|
#define TRNG_RD_SBLIM(base) (TRNG_SBLIM_REG(base))
|
|
#define TRNG_WR_SBLIM(base, value) (TRNG_SBLIM_REG(base) = (value))
|
|
#define TRNG_RMW_SBLIM(base, mask, value) (TRNG_WR_SBLIM(base, (TRNG_RD_SBLIM(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SBLIM bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SBLIM, field SB_LIM[9:0] (RW)
|
|
*
|
|
* Sparse Bit Limit. During Von Neumann sampling (if enabled by MCTL[SAMP_MODE],
|
|
* samples are discarded if two consecutive raw samples are both 0 or both 1. If
|
|
* this discarding occurs for a long period of time, it indicates that there is
|
|
* insufficient Entropy. The Sparse Bit Limit defines the maximum number of
|
|
* consecutive samples that may be discarded before an error is generated. This field
|
|
* is writable only if MCTL[PRGM] bit is 1. This register is cleared to 03hF by
|
|
* writing the MCTL[RST_DEF] bit to 1. Note that if MCTL[PRGM] bit is 0, this
|
|
* register address is used to read the Total Samples count in register TOTSAM, as
|
|
* defined in the following section.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SBLIM_SB_LIM field. */
|
|
#define TRNG_RD_SBLIM_SB_LIM(base) ((TRNG_SBLIM_REG(base) & TRNG_SBLIM_SB_LIM_MASK) >> TRNG_SBLIM_SB_LIM_SHIFT)
|
|
|
|
/*! @brief Set the SB_LIM field to a new value. */
|
|
#define TRNG_WR_SBLIM_SB_LIM(base, value) (TRNG_RMW_SBLIM(base, TRNG_SBLIM_SB_LIM_MASK, TRNG_SBLIM_SB_LIM(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SCMISC - RNG Statistical Check Miscellaneous Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SCMISC - RNG Statistical Check Miscellaneous Register (RW)
|
|
*
|
|
* Reset value: 0x0001001FU
|
|
*
|
|
* The RNG Statistical Check Miscellaneous Register contains the Long Run
|
|
* Maximum Limit value and the Retry Count value. This register is accessible only when
|
|
* the MCTL[PRGM] bit is 1, otherwise this register will read zeroes, and cannot
|
|
* be written.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SCMISC register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SCMISC_REG(base) ((base)->SCMISC)
|
|
#define TRNG_RD_SCMISC(base) (TRNG_SCMISC_REG(base))
|
|
#define TRNG_WR_SCMISC(base, value) (TRNG_SCMISC_REG(base) = (value))
|
|
#define TRNG_RMW_SCMISC(base, mask, value) (TRNG_WR_SCMISC(base, (TRNG_RD_SCMISC(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*
|
|
* Constants & macros for individual TRNG_SCMISC bitfields
|
|
*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SCMISC, field LRUN_MAX[7:0] (RW)
|
|
*
|
|
* LONG RUN MAX LIMIT. This value is the largest allowable number of consecutive
|
|
* samples of all 1, or all 0, that is allowed during the Entropy generation.
|
|
* This field is writable only if MCTL[PRGM] bit is 1. This field will read zeroes
|
|
* if MCTL[PRGM] = 0. This field is cleared to 22h by writing the MCTL[RST_DEF]
|
|
* bit to 1.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SCMISC_LRUN_MAX field. */
|
|
#define TRNG_RD_SCMISC_LRUN_MAX(base) \
|
|
((TRNG_SCMISC_REG(base) & TRNG_SCMISC_LRUN_MAX_MASK) >> TRNG_SCMISC_LRUN_MAX_SHIFT)
|
|
|
|
/*! @brief Set the LRUN_MAX field to a new value. */
|
|
#define TRNG_WR_SCMISC_LRUN_MAX(base, value) \
|
|
(TRNG_RMW_SCMISC(base, TRNG_SCMISC_LRUN_MAX_MASK, TRNG_SCMISC_LRUN_MAX(value)))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_ENT - RNG TRNG Entropy Read Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_ENT - RNG TRNG Entropy Read Register (RO)
|
|
*
|
|
* Reset value: 0x00000000U
|
|
*
|
|
* The RNG TRNG can be programmed to generate an entropy value that is readable
|
|
* via the SkyBlue bus. To do this, set the MCTL[TRNG_ACC] bit to 1. Once the
|
|
* entropy value has been generated, the MCTL[ENT_VAL] bit will be set to 1. At this
|
|
* point, ENT0 through ENT15 may be read to retrieve the 512-bit entropy value.
|
|
* Note that once ENT15 is read, the entropy value will be cleared and a new
|
|
* value will begin generation, so it is important that ENT15 be read last. These
|
|
* registers are readable only when MCTL[PRGM] = 0 (Run Mode), MCTL[TRNG_ACC] = 1
|
|
* (TRNG access mode) and MCTL[ENT_VAL] = 1, otherwise zeroes will be read.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_ENT register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_ENT_REG(base, index) ((base)->ENT[index])
|
|
#define TRNG_RD_ENT(base, index) (TRNG_ENT_REG(base, index))
|
|
/*@}*/
|
|
|
|
/*******************************************************************************
|
|
* TRNG_SEC_CFG - RNG Security Configuration Register
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @brief TRNG_SEC_CFG - RNG Security Configuration Register (RW)
|
|
*
|
|
* Reset value: 0x00000000U
|
|
*
|
|
* The RNG Security Configuration Register is a read/write register used to
|
|
* control the test mode, programmability and state modes of the RNG. Many bits are
|
|
* place holders for this version. More configurability will be added here. Clears
|
|
* on asynchronous reset. For SA-TRNG releases before 2014/July/01, offsets 0xA0
|
|
* to 0xAC used to be 0xB0 to 0xBC respectively. So, update newer tests that use
|
|
* these registers, if hard coded.
|
|
*/
|
|
/*!
|
|
* @name Constants and macros for entire TRNG_SEC_CFG register
|
|
*/
|
|
/*@{*/
|
|
#define TRNG_SEC_CFG_REG(base) ((base)->SEC_CFG)
|
|
#define TRNG_RD_SEC_CFG(base) (TRNG_SEC_CFG_REG(base))
|
|
#define TRNG_WR_SEC_CFG(base, value) (TRNG_SEC_CFG_REG(base) = (value))
|
|
#define TRNG_RMW_SEC_CFG(base, mask, value) (TRNG_WR_SEC_CFG(base, (TRNG_RD_SEC_CFG(base) & ~(mask)) | (value)))
|
|
/*@}*/
|
|
|
|
/*!
|
|
* @name Register TRNG_SEC_CFG, field NO_PRGM[1] (RW)
|
|
*
|
|
* If set the TRNG registers cannot be programmed. That is, regardless of the
|
|
* TRNG access mode in the SA-TRNG Miscellaneous Control Register.
|
|
*
|
|
* Values:
|
|
* - 0b0 - Programability of registers controlled only by the RNG Miscellaneous
|
|
* Control Register's access mode bit.
|
|
* - 0b1 - Overides RNG Miscellaneous Control Register access mode and prevents
|
|
* TRNG register programming.
|
|
*/
|
|
/*@{*/
|
|
/*! @brief Read current value of the TRNG_SEC_CFG_NO_PRGM field. */
|
|
#define TRNG_RD_SEC_CFG_NO_PRGM(base) \
|
|
((TRNG_SEC_CFG_REG(base) & TRNG_SEC_CFG_NO_PRGM_MASK) >> TRNG_SEC_CFG_NO_PRGM_SHIFT)
|
|
|
|
/*! @brief Set the NO_PRGM field to a new value. */
|
|
#define TRNG_WR_SEC_CFG_NO_PRGM(base, value) \
|
|
(TRNG_RMW_SEC_CFG(base, TRNG_SEC_CFG_NO_PRGM_MASK, TRNG_SEC_CFG_NO_PRGM(value)))
|
|
/*@}*/
|
|
|
|
/*! @brief Array to map TRNG instance number to base pointer. */
|
|
static TRNG_Type *const s_trngBases[] = TRNG_BASE_PTRS;
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/*! @brief Clock array name */
|
|
static const clock_ip_name_t s_trngClock[] = TRNG_CLOCKS;
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
|
|
/*******************************************************************************
|
|
* Prototypes
|
|
*******************************************************************************/
|
|
static status_t trng_ApplyUserConfig(TRNG_Type *base, const trng_config_t *userConfig);
|
|
static status_t trng_SetRetryCount(TRNG_Type *base, uint8_t retry_count);
|
|
static status_t trng_SetStatisticalCheckLimit(TRNG_Type *base,
|
|
trng_statistical_check_t statistical_check,
|
|
const trng_statistical_check_limit_t *limit);
|
|
static uint32_t trng_ReadEntropy(TRNG_Type *base, uint32_t index);
|
|
static uint32_t trng_GetInstance(TRNG_Type *base);
|
|
|
|
/*******************************************************************************
|
|
* Code
|
|
******************************************************************************/
|
|
|
|
static uint32_t trng_GetInstance(TRNG_Type *base)
|
|
{
|
|
uint32_t instance;
|
|
|
|
/* Find the instance index from base address mappings. */
|
|
for (instance = 0; instance < ARRAY_SIZE(s_trngBases); instance++)
|
|
{
|
|
if (s_trngBases[instance] == base)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
assert(instance < ARRAY_SIZE(s_trngBases));
|
|
|
|
return instance;
|
|
}
|
|
|
|
/*FUNCTION*********************************************************************
|
|
*
|
|
* Function Name : TRNG_InitUserConfigDefault
|
|
* Description : Initializes user configuration structure to default settings.
|
|
*
|
|
*END*************************************************************************/
|
|
/*!
|
|
* brief Initializes the user configuration structure to default values.
|
|
*
|
|
* This function initializes the configuration structure to default values. The default
|
|
* values are as follows.
|
|
* code
|
|
* user_config->lock = 0;
|
|
* user_config->clockMode = kTRNG_ClockModeRingOscillator;
|
|
* user_config->ringOscDiv = kTRNG_RingOscDiv0; Or to other kTRNG_RingOscDiv[2|8] depending on the platform.
|
|
* user_config->sampleMode = kTRNG_SampleModeRaw;
|
|
* user_config->entropyDelay = 3200;
|
|
* user_config->sampleSize = 2500;
|
|
* user_config->sparseBitLimit = TRNG_USER_CONFIG_DEFAULT_SPARSE_BIT_LIMIT;
|
|
* user_config->retryCount = 63;
|
|
* user_config->longRunMaxLimit = 34;
|
|
* user_config->monobitLimit.maximum = 1384;
|
|
* user_config->monobitLimit.minimum = 1116;
|
|
* user_config->runBit1Limit.maximum = 405;
|
|
* user_config->runBit1Limit.minimum = 227;
|
|
* user_config->runBit2Limit.maximum = 220;
|
|
* user_config->runBit2Limit.minimum = 98;
|
|
* user_config->runBit3Limit.maximum = 125;
|
|
* user_config->runBit3Limit.minimum = 37;
|
|
* user_config->runBit4Limit.maximum = 75;
|
|
* user_config->runBit4Limit.minimum = 11;
|
|
* user_config->runBit5Limit.maximum = 47;
|
|
* user_config->runBit5Limit.minimum = 1;
|
|
* user_config->runBit6PlusLimit.maximum = 47;
|
|
* user_config->runBit6PlusLimit.minimum = 1;
|
|
* user_config->pokerLimit.maximum = 26912;
|
|
* user_config->pokerLimit.minimum = 24445;
|
|
* user_config->frequencyCountLimit.maximum = 25600;
|
|
* user_config->frequencyCountLimit.minimum = 1600;
|
|
* endcode
|
|
*
|
|
* param user_config User configuration structure.
|
|
* return If successful, returns the kStatus_TRNG_Success. Otherwise, it returns an error.
|
|
*/
|
|
status_t TRNG_GetDefaultConfig(trng_config_t *userConfig)
|
|
{
|
|
status_t result;
|
|
|
|
if (userConfig != NULL)
|
|
{
|
|
userConfig->lock = TRNG_USER_CONFIG_DEFAULT_LOCK;
|
|
userConfig->clockMode = kTRNG_ClockModeRingOscillator;
|
|
userConfig->ringOscDiv = TRNG_USER_CONFIG_DEFAULT_OSC_DIV;
|
|
userConfig->sampleMode = kTRNG_SampleModeRaw;
|
|
userConfig->entropyDelay = TRNG_USER_CONFIG_DEFAULT_ENTROPY_DELAY;
|
|
userConfig->sampleSize = TRNG_USER_CONFIG_DEFAULT_SAMPLE_SIZE;
|
|
userConfig->sparseBitLimit = TRNG_USER_CONFIG_DEFAULT_SPARSE_BIT_LIMIT;
|
|
|
|
/* Statistical Check Parameters.*/
|
|
userConfig->retryCount = TRNG_USER_CONFIG_DEFAULT_RETRY_COUNT;
|
|
userConfig->longRunMaxLimit = TRNG_USER_CONFIG_DEFAULT_RUN_MAX_LIMIT;
|
|
|
|
userConfig->monobitLimit.maximum = TRNG_USER_CONFIG_DEFAULT_MONOBIT_MAXIMUM;
|
|
userConfig->monobitLimit.minimum = TRNG_USER_CONFIG_DEFAULT_MONOBIT_MINIMUM;
|
|
userConfig->runBit1Limit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT1_MAXIMUM;
|
|
userConfig->runBit1Limit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT1_MINIMUM;
|
|
userConfig->runBit2Limit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT2_MAXIMUM;
|
|
userConfig->runBit2Limit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT2_MINIMUM;
|
|
userConfig->runBit3Limit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT3_MAXIMUM;
|
|
userConfig->runBit3Limit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT3_MINIMUM;
|
|
userConfig->runBit4Limit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT4_MAXIMUM;
|
|
userConfig->runBit4Limit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT4_MINIMUM;
|
|
userConfig->runBit5Limit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT5_MAXIMUM;
|
|
userConfig->runBit5Limit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT5_MINIMUM;
|
|
userConfig->runBit6PlusLimit.maximum = TRNG_USER_CONFIG_DEFAULT_RUNBIT6PLUS_MAXIMUM;
|
|
userConfig->runBit6PlusLimit.minimum = TRNG_USER_CONFIG_DEFAULT_RUNBIT6PLUS_MINIMUM;
|
|
userConfig->pokerLimit.maximum = TRNG_USER_CONFIG_DEFAULT_POKER_MAXIMUM;
|
|
userConfig->pokerLimit.minimum = TRNG_USER_CONFIG_DEFAULT_POKER_MINIMUM;
|
|
userConfig->frequencyCountLimit.maximum = TRNG_USER_CONFIG_DEFAULT_FREQUENCY_MAXIMUM;
|
|
userConfig->frequencyCountLimit.minimum = TRNG_USER_CONFIG_DEFAULT_FREQUENCY_MINIMUM;
|
|
|
|
result = kStatus_Success;
|
|
}
|
|
else
|
|
{
|
|
result = kStatus_InvalidArgument;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets the TRNG retry count.
|
|
*
|
|
* This function sets the retry counter which defines the number of times a
|
|
* statistical check may fails during the TRNG Entropy Generation before
|
|
* generating an error.
|
|
*/
|
|
static status_t trng_SetRetryCount(TRNG_Type *base, uint8_t retry_count)
|
|
{
|
|
status_t status;
|
|
|
|
if ((retry_count >= 1u) && (retry_count <= 15u))
|
|
{
|
|
/* Set retry count.*/
|
|
TRNG_WR_SCMISC_RTY_CT(base, retry_count);
|
|
status = kStatus_Success;
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets statistical check limits.
|
|
*
|
|
* This function is used to set minimum and maximum limits of statistical checks.
|
|
*
|
|
*/
|
|
static status_t trng_SetStatisticalCheckLimit(TRNG_Type *base,
|
|
trng_statistical_check_t statistical_check,
|
|
const trng_statistical_check_limit_t *limit)
|
|
{
|
|
uint32_t range;
|
|
status_t status = kStatus_Success;
|
|
|
|
if (limit && (limit->maximum > limit->minimum))
|
|
{
|
|
range = limit->maximum - limit->minimum; /* Registers use range instead of minimum value.*/
|
|
|
|
switch (statistical_check)
|
|
{
|
|
case kTRNG_StatisticalCheckMonobit: /* Allowable maximum and minimum number of ones/zero detected during
|
|
entropy generation. */
|
|
if ((range <= 0xffffu) && (limit->maximum <= 0xffffu))
|
|
{
|
|
TRNG_WR_SCML_MONO_MAX(base, limit->maximum);
|
|
TRNG_WR_SCML_MONO_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit1: /* Allowable maximum and minimum number of runs of length 1 detected
|
|
during entropy generation. */
|
|
if ((range <= 0x7fffu) && (limit->maximum <= 0x7fffu))
|
|
{
|
|
TRNG_WR_SCR1L_RUN1_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR1L_RUN1_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit2: /* Allowable maximum and minimum number of runs of length 2 detected
|
|
during entropy generation. */
|
|
if ((range <= 0x3fffu) && (limit->maximum <= 0x3fffu))
|
|
{
|
|
TRNG_WR_SCR2L_RUN2_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR2L_RUN2_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit3: /* Allowable maximum and minimum number of runs of length 3 detected
|
|
during entropy generation. */
|
|
if ((range <= 0x1fffu) && (limit->maximum <= 0x1fffu))
|
|
{
|
|
TRNG_WR_SCR3L_RUN3_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR3L_RUN3_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit4: /* Allowable maximum and minimum number of runs of length 4 detected
|
|
during entropy generation. */
|
|
if ((range <= 0xfffu) && (limit->maximum <= 0xfffu))
|
|
{
|
|
TRNG_WR_SCR4L_RUN4_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR4L_RUN4_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit5: /* Allowable maximum and minimum number of runs of length 5 detected
|
|
during entropy generation. */
|
|
if ((range <= 0x7ffu) && (limit->maximum <= 0x7ffu))
|
|
{
|
|
TRNG_WR_SCR5L_RUN5_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR5L_RUN5_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckRunBit6Plus: /* Allowable maximum and minimum number of length 6 or more detected
|
|
during entropy generation */
|
|
if ((range <= 0x7ffu) && (limit->maximum <= 0x7ffu))
|
|
{
|
|
TRNG_WR_SCR6PL_RUN6P_MAX(base, limit->maximum);
|
|
TRNG_WR_SCR6PL_RUN6P_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckPoker: /* Allowable maximum and minimum limit of "Poker Test" detected during
|
|
entropy generation . */
|
|
if ((range <= 0xffffu) && (limit->maximum <= 0xffffffu))
|
|
{
|
|
TRNG_WR_PKRMAX_PKR_MAX(base, limit->maximum);
|
|
TRNG_WR_PKRRNG_PKR_RNG(base, range);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
case kTRNG_StatisticalCheckFrequencyCount: /* Allowable maximum and minimum limit of entropy sample frquency
|
|
count during entropy generation . */
|
|
if ((limit->minimum <= 0x3fffffu) && (limit->maximum <= 0x3fffffu))
|
|
{
|
|
TRNG_WR_FRQMAX_FRQ_MAX(base, limit->maximum);
|
|
TRNG_WR_FRQMIN_FRQ_MIN(base, limit->minimum);
|
|
}
|
|
else
|
|
{
|
|
status = kStatus_InvalidArgument;
|
|
}
|
|
break;
|
|
default:
|
|
status = kStatus_InvalidArgument;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*FUNCTION*********************************************************************
|
|
*
|
|
* Function Name : trng_ApplyUserConfig
|
|
* Description : Apply user configuration settings to TRNG module.
|
|
*
|
|
*END*************************************************************************/
|
|
static status_t trng_ApplyUserConfig(TRNG_Type *base, const trng_config_t *userConfig)
|
|
{
|
|
status_t status;
|
|
|
|
if (((status = trng_SetRetryCount(base, userConfig->retryCount)) == kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckMonobit, &userConfig->monobitLimit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit1, &userConfig->runBit1Limit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit2, &userConfig->runBit2Limit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit3, &userConfig->runBit3Limit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit4, &userConfig->runBit4Limit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit5, &userConfig->runBit5Limit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckRunBit6Plus,
|
|
&userConfig->runBit6PlusLimit)) == kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckPoker, &userConfig->pokerLimit)) ==
|
|
kStatus_Success) &&
|
|
((status = trng_SetStatisticalCheckLimit(base, kTRNG_StatisticalCheckFrequencyCount,
|
|
&userConfig->frequencyCountLimit)) == kStatus_Success))
|
|
{
|
|
TRNG_WR_MCTL_FOR_SCLK(base, userConfig->clockMode);
|
|
TRNG_WR_MCTL_OSC_DIV(base, userConfig->ringOscDiv);
|
|
TRNG_WR_MCTL_SAMP_MODE(base, userConfig->sampleMode);
|
|
TRNG_WR_SDCTL_ENT_DLY(base, userConfig->entropyDelay);
|
|
TRNG_WR_SDCTL_SAMP_SIZE(base, userConfig->sampleSize);
|
|
TRNG_WR_SBLIM_SB_LIM(base, userConfig->sparseBitLimit);
|
|
TRNG_WR_SCMISC_LRUN_MAX(base, userConfig->longRunMaxLimit);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets a entry data from the TRNG.
|
|
*
|
|
* This function gets an entropy data from TRNG.
|
|
* Entropy data is spread over TRNG_ENT_COUNT registers.
|
|
* Read register number is defined by index parameter.
|
|
*/
|
|
static uint32_t trng_ReadEntropy(TRNG_Type *base, uint32_t index)
|
|
{
|
|
uint32_t data;
|
|
|
|
index = index % TRNG_ENT_COUNT; /* This way we can use incremental index without limit control from application.*/
|
|
|
|
data = TRNG_RD_ENT(base, index);
|
|
|
|
if (index == (TRNG_ENT_COUNT - 1))
|
|
{
|
|
/* Dummy read. Defect workaround.
|
|
* TRNG could not clear ENT_VAL flag automatically, application
|
|
* had to do a dummy reading operation for anyone TRNG register
|
|
* to clear it firstly, then to read the RTENT0 to RTENT15 again */
|
|
index = TRNG_RD_ENT(base, 0);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
/*!
|
|
* brief Initializes the TRNG.
|
|
*
|
|
* This function initializes the TRNG.
|
|
* When called, the TRNG entropy generation starts immediately.
|
|
*
|
|
* param base TRNG base address
|
|
* param userConfig Pointer to the initialization configuration structure.
|
|
* return If successful, returns the kStatus_TRNG_Success. Otherwise, it returns an error.
|
|
*/
|
|
status_t TRNG_Init(TRNG_Type *base, const trng_config_t *userConfig)
|
|
{
|
|
status_t result;
|
|
|
|
/* Check input parameters.*/
|
|
if ((base != NULL) && (userConfig != NULL))
|
|
{
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/* Enable the clock gate. */
|
|
CLOCK_EnableClock(s_trngClock[trng_GetInstance(base)]);
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
|
|
/* Reset the registers of TRNG module to reset state. */
|
|
/* Must be in program mode.*/
|
|
TRNG_WR_MCTL_PRGM(base, kTRNG_WorkModeProgram);
|
|
/* Reset Defaults.*/
|
|
TRNG_WR_MCTL_RST_DEF(base, 1);
|
|
|
|
/* Set configuration.*/
|
|
if ((result = trng_ApplyUserConfig(base, userConfig)) == kStatus_Success)
|
|
{
|
|
/* Start entropy generation.*/
|
|
/* Set to Run mode.*/
|
|
TRNG_WR_MCTL_PRGM(base, kTRNG_WorkModeRun);
|
|
#if !(defined(FSL_FEATURE_TRNG_HAS_NO_TRNG_ACC) && (FSL_FEATURE_TRNG_HAS_NO_TRNG_ACC > 0))
|
|
/* Enable TRNG Access Mode. To generate an Entropy
|
|
* value that can be read via the true0-true15 registers.*/
|
|
TRNG_WR_MCTL_TRNG_ACC(base, 1);
|
|
#endif /* !FSL_FEATURE_TRNG_HAS_NO_TRNG_ACC */
|
|
|
|
(void)trng_ReadEntropy(base, (TRNG_ENT_COUNT - 1));
|
|
|
|
if (userConfig->lock == 1) /* Disable programmability of TRNG registers. */
|
|
{
|
|
TRNG_WR_SEC_CFG_NO_PRGM(base, 1);
|
|
}
|
|
|
|
result = kStatus_Success;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result = kStatus_InvalidArgument;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*!
|
|
* brief Shuts down the TRNG.
|
|
*
|
|
* This function shuts down the TRNG.
|
|
*
|
|
* param base TRNG base address.
|
|
*/
|
|
void TRNG_Deinit(TRNG_Type *base)
|
|
{
|
|
/* Check input parameters.*/
|
|
if (base)
|
|
{
|
|
/* Move to program mode. Stop entropy generation.*/
|
|
TRNG_WR_MCTL_PRGM(base, kTRNG_WorkModeProgram);
|
|
|
|
/* Check before clock stop.
|
|
TRNG turns on the TRNG free-running ring oscillator whenever new entropy
|
|
is being generated and turns off the ring oscillator when entropy generation
|
|
is complete. If the TRNG clock is stopped while the TRNG ring oscillator
|
|
is running, the oscillator continues running though the RNG clock.
|
|
is stopped. */
|
|
while (TRNG_RD_MCTL_TSTOP_OK(base) == 0)
|
|
{
|
|
}
|
|
|
|
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
|
|
/* Disable Clock*/
|
|
CLOCK_DisableClock(s_trngClock[trng_GetInstance(base)]);
|
|
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* brief Gets random data.
|
|
*
|
|
* This function gets random data from the TRNG.
|
|
*
|
|
* param base TRNG base address.
|
|
* param data Pointer address used to store random data.
|
|
* param dataSize Size of the buffer pointed by the data parameter.
|
|
* return random data
|
|
*/
|
|
status_t TRNG_GetRandomData(TRNG_Type *base, void *data, size_t dataSize)
|
|
{
|
|
status_t result = kStatus_Success;
|
|
uint32_t random_32;
|
|
uint8_t *random_p;
|
|
uint32_t random_size;
|
|
uint8_t *data_p = (uint8_t *)data;
|
|
uint32_t i;
|
|
int index = 0;
|
|
|
|
/* Check input parameters.*/
|
|
if (base && data && dataSize)
|
|
{
|
|
do
|
|
{
|
|
/* Wait for Valid or Error flag*/
|
|
while ((TRNG_RD_MCTL_ENT_VAL(base) == 0) && (TRNG_RD_MCTL_ERR(base) == 0))
|
|
{
|
|
}
|
|
|
|
/* Check HW error.*/
|
|
if (TRNG_RD_MCTL_ERR(base))
|
|
{
|
|
result = kStatus_Fail; /* TRNG module error occurred */
|
|
/* Clear error.*/
|
|
TRNG_WR_MCTL_ERR(base, 1);
|
|
break; /* No sense stay here.*/
|
|
}
|
|
|
|
/* Read Entropy.*/
|
|
random_32 = trng_ReadEntropy(base, index++);
|
|
|
|
random_p = (uint8_t *)&random_32;
|
|
|
|
if (dataSize < sizeof(random_32))
|
|
{
|
|
random_size = dataSize;
|
|
}
|
|
else
|
|
{
|
|
random_size = sizeof(random_32);
|
|
}
|
|
|
|
for (i = 0U; i < random_size; i++)
|
|
{
|
|
*data_p++ = *random_p++;
|
|
}
|
|
|
|
dataSize -= random_size;
|
|
} while (dataSize > 0);
|
|
|
|
/* Start a new entropy generation.
|
|
It is done by reading of the last entropy register.*/
|
|
if ((index % TRNG_ENT_COUNT) != (TRNG_ENT_COUNT - 1))
|
|
{
|
|
trng_ReadEntropy(base, (TRNG_ENT_COUNT - 1));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result = kStatus_InvalidArgument;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif /* FSL_FEATURE_SOC_TRNG_COUNT */
|