nucleus_specific.h

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/*************************************************************************
*
*                Copyright Mentor Graphics Corporation 2005
*                          All Rights Reserved.
*
*  THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS
*  THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS
*  SUBJECT TO LICENSE TERMS.
*
*************************************************************************/

/*************************************************************************
*
*  FILE NAME                                      VERSION
*
*  nucleus_specific.h          Nucleus PLUS\ARM926 DM320\Code Composer 1.15.1
*
*  COMPONENT
*
*       System Constants
*
*  DESCRIPTION
*
*       This file contains system constants common to both the
*       application and the actual Nucleus PLUS components.  This file
*       also contains data structure definitions that hide internal
*       information from the application.
*
*
*  DATA STRUCTURES
*
*
*  FUNCTIONS
*
*       None
*
*  DEPENDENCIES
*
*       None
*
*************************************************************************/

/* Check to see if this file has been included already.  */

#ifndef         NUCLEUS_SPECIFIC

#define         NUCLEUS_SPECIFIC

#define NU_PLUS_RELEASE_STRING "Copyright MGC 2005 - Nucleus PLUS - ARM926 DM320 Code Composer v. 1.15"

#define         NU_SUPERV_USER_MODE         0
#define         NU_MODULE_SUPPORT           0
#define         NU_MMU_MODE                 0

/* MMU mode requires the module support */
#if (NU_MMU_MODE == 1)

#undef          NU_MODULE_SUPPORT
#define         NU_MODULE_SUPPORT           1

#endif

/* Module support requires mode switching */
#if (NU_MODULE_SUPPORT == 1)

#undef          NU_SUPERV_USER_MODE
#define         NU_SUPERV_USER_MODE         1

#endif

/* Define the clock frequency that is used by the timer control unit (must be defined in hertz */
#define         NU_System_Clock_Frequency   27000000

/* Define the number of Nucleus PLUS ticks that will occur every second.
   By default, the PLUS timer goes off every 10ms, so the PLUS System Clock
   ticks 100 times in a second. */
#define         NU_PLUS_Ticks_Per_Second    100

/* Define the number of timer ticks that will occur every second.  The
   ARM926 uses no pre-scalar, so the number of hardware clock ticks
   per second is the same as the clock frequency. */
#define         NU_HW_Ticks_Per_Second      (NU_System_Clock_Frequency / 5)

/* The number of timer ticks between Nucleus timer interrupts that increment
   TMD_System_Clock.  See timer initialization code for details about how to
   determine this number. */
#define         NU_HW_Ticks_Per_SW_Tick     (NU_HW_Ticks_Per_Second / NU_PLUS_Ticks_Per_Second)

/* Define NU_COUNT_DOWN if the system timer counts down to 0.
   This macro is used to switch between formulas to calculate
   the number of ticks since the systems started in NU_Get_Clock */
#define         NU_COUNT_UP

/* This macro returns the value of the Nucleus timer (not the system clock) */
#define         NU_Retrieve_Hardware_Clock(hw_tick) hw_tick = *(volatile UINT32 *)(0x0003000A)

/* Define interrupt lockout and enable constants.  */

#define         NU_DISABLE_INTERRUPTS       0xC0
#define         NU_ENABLE_INTERRUPTS        0x00


/* Define the number of accesses required to read or write a pointer data
   type.  This value is used to make optimizations in some ports of Nucleus
   PLUS.  */

#define         NU_POINTER_ACCESS           1


/* Define the padding required for usage of the DATA_ELEMENT type within
   Nucleus PLUS structures.  These values insure proper alignment for the
   next structure member.  */

#define         PAD_1                       3
#define         PAD_2                       2
#define         PAD_3                       1


/* Define constants that are target dependent and/or are used for internal
   purposes.  */

#define         NU_MIN_STACK_SIZE           240
#define         NU_MAX_NAME                 8
#define         NU_MAX_VECTORS              39
#define         NU_MAX_LISRS                39

#endif  /* !NUCLEUS */