/***********************************************************************************************************************
 * Copyright [2020-2021] Renesas Electronics Corporation and/or its affiliates.  All Rights Reserved.
 *
 * This software and documentation are supplied by Renesas Electronics America Inc. and may only be used with products
 * of Renesas Electronics Corp. and its affiliates ("Renesas").  No other uses are authorized.  Renesas products are
 * sold pursuant to Renesas terms and conditions of sale.  Purchasers are solely responsible for the selection and use
 * of Renesas products and Renesas assumes no liability.  No license, express or implied, to any intellectual property
 * right is granted by Renesas. This software is protected under all applicable laws, including copyright laws. Renesas
 * reserves the right to change or discontinue this software and/or this documentation. THE SOFTWARE AND DOCUMENTATION
 * IS DELIVERED TO YOU "AS IS," AND RENESAS MAKES NO REPRESENTATIONS OR WARRANTIES, AND TO THE FULLEST EXTENT
 * PERMISSIBLE UNDER APPLICABLE LAW, DISCLAIMS ALL WARRANTIES, WHETHER EXPLICITLY OR IMPLICITLY, INCLUDING WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT, WITH RESPECT TO THE SOFTWARE OR
 * DOCUMENTATION.  RENESAS SHALL HAVE NO LIABILITY ARISING OUT OF ANY SECURITY VULNERABILITY OR BREACH.  TO THE MAXIMUM
 * EXTENT PERMITTED BY LAW, IN NO EVENT WILL RENESAS BE LIABLE TO YOU IN CONNECTION WITH THE SOFTWARE OR DOCUMENTATION
 * (OR ANY PERSON OR ENTITY CLAIMING RIGHTS DERIVED FROM YOU) FOR ANY LOSS, DAMAGES, OR CLAIMS WHATSOEVER, INCLUDING,
 * WITHOUT LIMITATION, ANY DIRECT, CONSEQUENTIAL, SPECIAL, INDIRECT, PUNITIVE, OR INCIDENTAL DAMAGES; ANY LOST PROFITS,
 * OTHER ECONOMIC DAMAGE, PROPERTY DAMAGE, OR PERSONAL INJURY; AND EVEN IF RENESAS HAS BEEN ADVISED OF THE POSSIBILITY
 * OF SUCH LOSS, DAMAGES, CLAIMS OR COSTS.
 **********************************************************************************************************************/

#ifndef BSP_COMMON_H
#define BSP_COMMON_H

/***********************************************************************************************************************
 * Includes   <System Includes> , "Project Includes"
 **********************************************************************************************************************/

/* C99 includes. */
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <assert.h>
#include <string.h>

/* Different compiler support. */
#include "../../inc/fsp_common_api.h"
#include "bsp_compiler_support.h"
#include "bsp_cfg.h"

/** Common macro for FSP header files. There is also a corresponding FSP_FOOTER macro at the end of this file. */
FSP_HEADER

/*******************************************************************************************************************//**
 * @addtogroup BSP_MCU
 * @{
 **********************************************************************************************************************/

/***********************************************************************************************************************
 * Macro definitions
 **********************************************************************************************************************/

/** Used to signify that an ELC event is not able to be used as an interrupt. */
#define BSP_IRQ_DISABLED    (0xFFU)

/* Version of this module's code and API. */

#if 1 == BSP_CFG_RTOS                  /* ThreadX */
 #include "tx_user.h"
 #if defined(TX_ENABLE_EVENT_TRACE) || defined(TX_ENABLE_EXECUTION_CHANGE_NOTIFY)
  #define FSP_CONTEXT_SAVE       tx_isr_start((uint32_t) R_FSP_CurrentIrqGet());
  #define FSP_CONTEXT_RESTORE    tx_isr_end((uint32_t) R_FSP_CurrentIrqGet());
 #else
  #define FSP_CONTEXT_SAVE
  #define FSP_CONTEXT_RESTORE
 #endif
#else
 #define FSP_CONTEXT_SAVE
 #define FSP_CONTEXT_RESTORE
#endif

/** Macro that can be defined in order to enable logging in FSP modules. */
#ifndef FSP_LOG_PRINT
 #define FSP_LOG_PRINT(X)
#endif

/** Macro to log and return error without an assertion. */
#ifndef FSP_RETURN

 #define FSP_RETURN(err)    FSP_ERROR_LOG((err)); \
    return err;
#endif

/** This function is called before returning an error code. To stop on a runtime error, define fsp_error_log in
 * user code and do required debugging (breakpoints, stack dump, etc) in this function.*/
#if (1 == BSP_CFG_ERROR_LOG)

 #ifndef FSP_ERROR_LOG
  #define FSP_ERROR_LOG(err) \
    fsp_error_log((err), __FILE__, __LINE__);
 #endif
#else

 #define FSP_ERROR_LOG(err)
#endif

/** Default assertion calls ::FSP_ERROR_RETURN if condition "a" is false. Used to identify incorrect use of API's in FSP
 * functions. */
#if (3 == BSP_CFG_ASSERT)
 #define FSP_ASSERT(a)
#elif (2 == BSP_CFG_ASSERT)
 #define FSP_ASSERT(a)    {assert(a);}
#else
 #define FSP_ASSERT(a)    FSP_ERROR_RETURN((a), FSP_ERR_ASSERTION)
#endif                                 // ifndef FSP_ASSERT

/** All FSP error codes are returned using this macro. Calls ::FSP_ERROR_LOG function if condition "a" is false. Used
 * to identify runtime errors in FSP functions. */

#define FSP_ERROR_RETURN(a, err)                        \
    {                                                   \
        if ((a))                                        \
        {                                               \
            (void) 0;                  /* Do nothing */ \
        }                                               \
        else                                            \
        {                                               \
            FSP_ERROR_LOG(err);                         \
            return err;                                 \
        }                                               \
    }

/* Function-like macro used to wait for a condition to be met, most often used to wait for hardware register updates.
 * This macro can be redefined to add a timeout if necessary. */
#ifndef FSP_HARDWARE_REGISTER_WAIT
 #define FSP_HARDWARE_REGISTER_WAIT(reg, required_value)    while (reg != required_value) { /* Wait. */}
#endif

/****************************************************************
 *
 * This check is performed to select suitable ASM API with respect to core
 *
 * The macros __CORE__ , __ARM7EM__ and __ARM_ARCH_8M_BASE__ are undefined for GCC, but defined(__IAR_SYSTEMS_ICC__) is false for GCC, so
 * the left half of the || expression evaluates to false for GCC regardless of the values of these macros. */

#if (defined(__IAR_SYSTEMS_ICC__) && ((__CORE__ == __ARM7EM__) || (__CORE__ == __ARM_ARCH_8M_BASE__))) || \
    defined(__ARM_ARCH_7EM__)          // CM4
 #ifndef BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION
  #define BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION    (0U)
 #endif
#else // CM23
 #ifdef BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION
  #undef BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION
 #endif
 #define BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION    (0U)
#endif

/* This macro defines a variable for saving previous mask value */
#ifndef FSP_CRITICAL_SECTION_DEFINE

 #define FSP_CRITICAL_SECTION_DEFINE               uint32_t old_mask_level = 0U
#endif

/* These macros abstract methods to save and restore the interrupt state for different architectures. */
#if (0 == BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION)
 #define FSP_CRITICAL_SECTION_GET_CURRENT_STATE    __get_PRIMASK
 #define FSP_CRITICAL_SECTION_SET_STATE            __set_PRIMASK
 #define FSP_CRITICAL_SECTION_IRQ_MASK_SET         (1U)
#else
 #define FSP_CRITICAL_SECTION_GET_CURRENT_STATE    __get_BASEPRI
 #define FSP_CRITICAL_SECTION_SET_STATE            __set_BASEPRI
 #define FSP_CRITICAL_SECTION_IRQ_MASK_SET         ((uint8_t) (BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION << \
                                                               (8U - __NVIC_PRIO_BITS)))
#endif

/** This macro temporarily saves the current interrupt state and disables interrupts. */
#ifndef FSP_CRITICAL_SECTION_ENTER
 #define FSP_CRITICAL_SECTION_ENTER                            \
    old_mask_level = FSP_CRITICAL_SECTION_GET_CURRENT_STATE(); \
    FSP_CRITICAL_SECTION_SET_STATE(FSP_CRITICAL_SECTION_IRQ_MASK_SET)
#endif

/** This macro restores the previously saved interrupt state, reenabling interrupts. */
#ifndef FSP_CRITICAL_SECTION_EXIT
 #define FSP_CRITICAL_SECTION_EXIT              FSP_CRITICAL_SECTION_SET_STATE(old_mask_level)
#endif

/* Number of Cortex processor exceptions, used as an offset from XPSR value for the IRQn_Type macro. */
#define FSP_PRIV_CORTEX_PROCESSOR_EXCEPTIONS    (16U)

/** Used to signify that the requested IRQ vector is not defined in this system. */
#define FSP_INVALID_VECTOR                      ((IRQn_Type) - 33)

/* Private definition used in R_FSP_SystemClockHzGet. Each bitfield in SCKDIVCR is 3 bits wide. */
#define FSP_PRIV_SCKDIVCR_DIV_MASK              (7)

/* Use the secure registers for secure projects and flat projects. */
#if !BSP_TZ_NONSECURE_BUILD && BSP_FEATURE_TZ_HAS_TRUSTZONE
 #define FSP_PRIV_TZ_USE_SECURE_REGS            (1)
#else
 #define FSP_PRIV_TZ_USE_SECURE_REGS            (0)
#endif

/***********************************************************************************************************************
 * Typedef definitions
 **********************************************************************************************************************/

/** Different warm start entry locations in the BSP. */
typedef enum e_bsp_warm_start_event
{
    BSP_WARM_START_RESET = 0,          ///< Called almost immediately after reset. No C runtime environment, clocks, or IRQs.
    BSP_WARM_START_POST_CLOCK,         ///< Called after clock initialization. No C runtime environment or IRQs.
    BSP_WARM_START_POST_C              ///< Called after clocks and C runtime environment have been set up
} bsp_warm_start_event_t;

/* Private enum used in R_FSP_SystemClockHzGet.  Maps clock name to base bit in SCKDIVCR. */
typedef enum e_fsp_priv_clock
{
    FSP_PRIV_CLOCK_PCLKD = 0,
    FSP_PRIV_CLOCK_PCLKC = 4,
    FSP_PRIV_CLOCK_PCLKB = 8,
    FSP_PRIV_CLOCK_PCLKA = 12,
    FSP_PRIV_CLOCK_BCLK  = 16,
    FSP_PRIV_CLOCK_ICLK  = 24,
    FSP_PRIV_CLOCK_FCLK  = 28,
} fsp_priv_clock_t;

typedef struct st_bsp_unique_id
{
    union
    {
        uint32_t unique_id_words[4];
        uint8_t  unique_id_bytes[16];
    };
} bsp_unique_id_t;

/***********************************************************************************************************************
 * Exported global variables
 **********************************************************************************************************************/

/***********************************************************************************************************************
 * Global variables (defined in other files)
 **********************************************************************************************************************/

/***********************************************************************************************************************
 * Inline Functions
 **********************************************************************************************************************/

/*******************************************************************************************************************//**
 * Return active interrupt vector number value
 *
 * @return     Active interrupt vector number value
 **********************************************************************************************************************/
__STATIC_INLINE IRQn_Type R_FSP_CurrentIrqGet (void)
{
    xPSR_Type xpsr_value;
    xpsr_value.w = __get_xPSR();

    return (IRQn_Type) (xpsr_value.b.ISR - FSP_PRIV_CORTEX_PROCESSOR_EXCEPTIONS);
}

/*******************************************************************************************************************//**
 * Gets the frequency of a system clock.
 *
 * @return     Frequency of requested clock in Hertz.
 **********************************************************************************************************************/
__STATIC_INLINE uint32_t R_FSP_SystemClockHzGet (fsp_priv_clock_t clock)
{
    uint32_t sckdivcr  = R_SYSTEM->SCKDIVCR;
    uint32_t iclk_div  = (sckdivcr >> FSP_PRIV_CLOCK_ICLK) & FSP_PRIV_SCKDIVCR_DIV_MASK;
    uint32_t clock_div = (sckdivcr >> clock) & FSP_PRIV_SCKDIVCR_DIV_MASK;

    return (SystemCoreClock << iclk_div) >> clock_div;
}

/*******************************************************************************************************************//**
 * Get unique ID for this device.
 *
 * @return  A pointer to the unique identifier structure
 **********************************************************************************************************************/
__STATIC_INLINE bsp_unique_id_t const * R_BSP_UniqueIdGet ()
{
    return (bsp_unique_id_t *) BSP_FEATURE_BSP_UNIQUE_ID_POINTER;
}

/*******************************************************************************************************************//**
 * Disables the flash cache.
 **********************************************************************************************************************/
__STATIC_INLINE void R_BSP_FlashCacheDisable ()
{
    R_FCACHE->FCACHEE = 0U;

#if BSP_FEATURE_BSP_HAS_CODE_SYSTEM_CACHE

    /* Disable the C-Cache. */
    R_CACHE->CCACTL = 0U;
#endif
}

/*******************************************************************************************************************//**
 * Enables the flash cache.
 **********************************************************************************************************************/
__STATIC_INLINE void R_BSP_FlashCacheEnable ()
{
    /* Invalidate the flash cache and wait until it is invalidated. (See section 55.3.2.2 "Operation" of the Flash Cache
     * in the RA6M3 manual R01UH0878EJ0100). */
    R_FCACHE->FCACHEIV = 1U;
    FSP_HARDWARE_REGISTER_WAIT(R_FCACHE->FCACHEIV, 0U);

    /* Enable flash cache. */
    R_FCACHE->FCACHEE = 1U;

#if BSP_FEATURE_BSP_HAS_CODE_SYSTEM_CACHE

    /* Configure the C-Cache line size. */
    R_CACHE->CCALCF = BSP_CFG_C_CACHE_LINE_SIZE;

    /* Enable the C-Cache. */
    R_CACHE->CCACTL = 1U;
#endif
}

/***********************************************************************************************************************
 * Exported global functions (to be accessed by other files)
 **********************************************************************************************************************/
#if ((1 == BSP_CFG_ERROR_LOG) || (1 == BSP_CFG_ASSERT))

/** Prototype of default function called before errors are returned in FSP code if BSP_CFG_LOG_ERRORS is set to 1. */
void fsp_error_log(fsp_err_t err, const char * file, int32_t line);

#endif

/** In the event of an unrecoverable error the BSP will by default call the __BKPT() intrinsic function which will
 *  alert the user of the error. The user can override this default behavior by defining their own
 *  BSP_CFG_HANDLE_UNRECOVERABLE_ERROR macro.
 */
#if !defined(BSP_CFG_HANDLE_UNRECOVERABLE_ERROR)

 #define BSP_CFG_HANDLE_UNRECOVERABLE_ERROR(x)    __BKPT((x))
#endif

/** @} (end addtogroup BSP_MCU) */

/** Common macro for FSP header files. There is also a corresponding FSP_HEADER macro at the top of this file. */
FSP_FOOTER

#endif
