Subversion Repositories openrisc_2011-10-31

//*-----------------------------------------------------------------------------

//*         ATMEL Microcontroller Software Support  -  ROUSSET  -

//*-----------------------------------------------------------------------------

//* The software is delivered "AS IS" without warranty or condition of any

//* kind, either express, implied or statutory. This includes without

//* limitation any warranty or condition with respect to merchantability or

//* fitness for any particular purpose, or against the infringements of

//* intellectual property rights of others.

//*-----------------------------------------------------------------------------

//* File Name           : ebi.h

//* Object              : External Bus Interface Definition File

//* Translator          : ARM Software Development Toolkit V2.11a

//*

//* 1.0 03/11/97 JCZ    : Creation

//* 2.0 21/10/98 JCZ    : Clean up

//*-----------------------------------------------------------------------------

#ifndef ebi_h

#define ebi_h

/*----------------------------------------*/

/* Memory Controller Interface Definition */

/*----------------------------------------*/

typedef struct

{

    at91_reg        EBI_CSR[8] ;        /* Chip Select Register */

    at91_reg        EBI_RCR ;           /* Remap Control Register */

    at91_reg        EBI_MCR ;           /* Memory Control Register */

} StructEBI ;

/*-----------------------*/

/* Chip Select Registers */

/*-----------------------*/

/* Data Bus Width */

#define DataBus16               (1<<0)

#define DataBus8                (2<<0)

#define DBW                     (3<<0)

/* Number of Wait States */

#define B_NWS                   2

#define WaitState1              (0<<B_NWS)

#define WaitState2              (1<<B_NWS)

#define WaitState3              (2<<B_NWS)

#define WaitState4              (3<<B_NWS)

#define WaitState5              (4<<B_NWS)

#define WaitState6              (5<<B_NWS)

#define WaitState7              (6<<B_NWS)

#define WaitState8              (7<<B_NWS)

#define NWS                     (7<<B_NWS)

/* Wait State Enable */

#define WaitStateDisable        (0<<5)

#define WaitStateEnable         (1<<5)

#define WSE                     (1<<5)

/* Page size */

#define PageSize1M              (0<<7)

#define PageSize4M              (1<<7)

#define PageSize16M             (2<<7)

#define PageSize64M             (3<<7)

#define PAGES                   (3<<7)

/* Number of Data Float Output Time Clock Cycle */

#define B_TDF                   9

#define tDF_0cycle              (0<<B_TDF)

#define tDF_1cycle              (1<<B_TDF)

#define tDF_2cycle              (2<<B_TDF)

#define tDF_3cycle              (3<<B_TDF)

#define tDF_4cycle              (4<<B_TDF)

#define tDF_5cycle              (5<<B_TDF)

#define tDF_6cycle              (6<<B_TDF)

#define tDF_7cycle              (7<<B_TDF)

#define TDF                     (7<<B_TDF)

/* Byte Access Type */

#define ByteWriteAccessType (0<<12)

#define ByteSelectAccessType    (1<<12)

#define BAT                     1<<12)

/* Chip Select Enable */

#define CSEnable                (1<<13)

#define CSDisable               (0<<13)

#define CSE                     (1<<13)

#define BA                      ((u_int)(0xFFF)<<20)

/*-------------------------*/

/* Memory Control Register */

/*-------------------------*/

/* Address Line Enable */

#define ALE                     (7<<0)

#define BankSize16M             (0<<0)

#define BankSize8M              (4<<0)

#define BankSize4M              (5<<0)

#define BankSize2M              (6<<0)

#define BankSize1M              (7<<0)

/* Data Read Protocol */

#define StandardReadProtocol    (0<<4)

#define EarlyReadProtocol       (1<<4)

#define DRP                     (1<<4)

/*------------------------*/

/* Remap Control Register */

/*------------------------*/

#define RCB                     (1<<0)

/*--------------------------------*/

/* Device Dependancies Definition */

/*--------------------------------*/

#ifdef AT91M40400

/* External Bus Interface User Interface BAse Address */

#define EBI_BASE            ((StructEBI *) 0xFFE00000)

#endif

#endif /* ebi_h */