1. 根目录:
2. include
3. soc
4. at91
5. at91rm9200_sdramc.h

/*
 * arch/arm/mach-at91/include/mach/at91rm9200_sdramc.h
 *
 * Copyright (C) 2005 Ivan Kokshaysky
 * Copyright (C) SAN People
 *
 * Memory Controllers (SDRAMC only) - System peripherals registers.
 * Based on AT91RM9200 datasheet revision E.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef AT91RM9200_SDRAMC_H
#define AT91RM9200_SDRAMC_H

/* SDRAM Controller registers */
#define AT91RM9200_SDRAMC_MR		0x90			/* Mode Register */
#define		AT91RM9200_SDRAMC_MODE	(0xf << 0)		/* Command Mode */
#define			AT91RM9200_SDRAMC_MODE_NORMAL		(0 << 0)
#define			AT91RM9200_SDRAMC_MODE_NOP		(1 << 0)
#define			AT91RM9200_SDRAMC_MODE_PRECHARGE	(2 << 0)
#define			AT91RM9200_SDRAMC_MODE_LMR		(3 << 0)
#define			AT91RM9200_SDRAMC_MODE_REFRESH	(4 << 0)
#define		AT91RM9200_SDRAMC_DBW		(1   << 4)		/* Data Bus Width */
#define			AT91RM9200_SDRAMC_DBW_32	(0 << 4)
#define			AT91RM9200_SDRAMC_DBW_16	(1 << 4)

#define AT91RM9200_SDRAMC_TR		0x94			/* Refresh Timer Register */
#define		AT91RM9200_SDRAMC_COUNT	(0xfff << 0)		/* Refresh Timer Count */

#define AT91RM9200_SDRAMC_CR		0x98			/* Configuration Register */
#define		AT91RM9200_SDRAMC_NC		(3   <<  0)		/* Number of Column Bits */
#define			AT91RM9200_SDRAMC_NC_8	(0 << 0)
#define			AT91RM9200_SDRAMC_NC_9	(1 << 0)
#define			AT91RM9200_SDRAMC_NC_10	(2 << 0)
#define			AT91RM9200_SDRAMC_NC_11	(3 << 0)
#define		AT91RM9200_SDRAMC_NR		(3   <<  2)		/* Number of Row Bits */
#define			AT91RM9200_SDRAMC_NR_11	(0 << 2)
#define			AT91RM9200_SDRAMC_NR_12	(1 << 2)
#define			AT91RM9200_SDRAMC_NR_13	(2 << 2)
#define		AT91RM9200_SDRAMC_NB		(1   <<  4)		/* Number of Banks */
#define			AT91RM9200_SDRAMC_NB_2	(0 << 4)
#define			AT91RM9200_SDRAMC_NB_4	(1 << 4)
#define		AT91RM9200_SDRAMC_CAS		(3   <<  5)		/* CAS Latency */
#define			AT91RM9200_SDRAMC_CAS_2	(2 << 5)
#define		AT91RM9200_SDRAMC_TWR		(0xf <<  7)		/* Write Recovery Delay */
#define		AT91RM9200_SDRAMC_TRC		(0xf << 11)		/* Row Cycle Delay */
#define		AT91RM9200_SDRAMC_TRP		(0xf << 15)		/* Row Precharge Delay */
#define		AT91RM9200_SDRAMC_TRCD	(0xf << 19)		/* Row to Column Delay */
#define		AT91RM9200_SDRAMC_TRAS	(0xf << 23)		/* Active to Precharge Delay */
#define		AT91RM9200_SDRAMC_TXSR	(0xf << 27)		/* Exit Self Refresh to Active Delay */

#define AT91RM9200_SDRAMC_SRR		0x9c			/* Self Refresh Register */
#define AT91RM9200_SDRAMC_LPR		0xa0			/* Low Power Register */
#define AT91RM9200_SDRAMC_IER		0xa4			/* Interrupt Enable Register */
#define AT91RM9200_SDRAMC_IDR		0xa8			/* Interrupt Disable Register */
#define AT91RM9200_SDRAMC_IMR		0xac			/* Interrupt Mask Register */
#define AT91RM9200_SDRAMC_ISR		0xb0			/* Interrupt Status Register */

#endif