File content as of revision 9:da373a015d07:

/*****************************************************************************
 *
 *   Copyright(C) 2011, Embedded Artists AB
 *   All rights reserved.
 *
 ******************************************************************************
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * products. This software is supplied "AS IS" without any warranties.
 * Embedded Artists AB assumes no responsibility or liability for the
 * use of the software, conveys no license or title under any patent,
 * copyright, or mask work right to the product. Embedded Artists AB
 * reserves the right to make changes in the software without
 * notification. Embedded Artists AB also make no representation or
 * warranty that such application will be suitable for the specified
 * use without further testing or modification.
 *****************************************************************************/
#ifndef __SDRAM_H
#define __SDRAM_H

#include "stdint.h"

/*
 * These timing parameters are based on the EMC clock
 * there is no way of ensuring what the EMC clock frequency is
 * without severely bloating the code
 * ENSURE THAT THE EMC clock is one of these values
 */
#define SDRAM_SPEED_48 0
#define SDRAM_SPEED_50 1
#define SDRAM_SPEED_60 2
#define SDRAM_SPEED_72 3
#define SDRAM_SPEED_80 4

#define SDRAM_SPEED SDRAM_SPEED_60

#define SDRAM_CONFIG_32BIT
#define SDRAM_SIZE               0x2000000

#define SDRAM_BASE               0xA0000000 /*CS0*/

/* Initializes the SDRAM.
 *
 * The entire SDRAM will be made available to malloc per default.
 *
 * Note that this functions is called internally if malloc requests
 * memory from SDRAM and that hasn't been disabled with a call to
 * sdram_disableMallocSdram().
 *
 * @returns 0 on success, 1 on failure
 */
uint32_t sdram_init();

/* Prevents malloc from using SDRAM.
 *
 * This function must be called before the first allocation that 
 * would have been in SDRAM. If a big allocation has already been
 * made then this call will do nothing as the SDRAM will have been
 * initialized and all SDRAM given to malloc.
 */
void sdram_disableMallocSdram();

#endif /* end __SDRAM_H */
/****************************************************************************
**                            End Of File
*****************************************************************************/