1. 根目录:
2. arch
3. arm
4. mach-bcmring
5. include
6. mach
7. memory_settings.h

/*****************************************************************************
* Copyright 2004 - 2008 Broadcom Corporation.  All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available at
* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a
* license other than the GPL, without Broadcom's express prior written
* consent.
*****************************************************************************/

#ifndef MEMORY_SETTINGS_H
#define MEMORY_SETTINGS_H

/* ---- Include Files ---------------------------------------- */
/* ---- Constants and Types ---------------------------------- */

/* Memory devices */
/* NAND Flash timing for 166 MHz setting */
#define HW_CFG_NAND_tBTA  (5 << 16)	/* Bus turnaround cycle (n)        0-7  (30 ns) */
#define HW_CFG_NAND_tWP   (4 << 11)	/* Write pulse width cycle (n+1)   0-31 (25 ns) */
#define HW_CFG_NAND_tWR   (1 << 9)	/* Write recovery cycle (n+1)      0-3  (10 ns) */
#define HW_CFG_NAND_tAS   (0 << 7)	/* Write address setup cycle (n+1) 0-3  ( 0 ns) */
#define HW_CFG_NAND_tOE   (3 << 5)	/* Output enable delay cycle (n)   0-3  (15 ns) */
#define HW_CFG_NAND_tRC   (7 << 0)	/* Read access cycle (n+2)         0-31 (50 ns) */

#define HW_CFG_NAND_TCR (HW_CFG_NAND_tBTA \
	| HW_CFG_NAND_tWP  \
	| HW_CFG_NAND_tWR  \
	| HW_CFG_NAND_tAS  \
	| HW_CFG_NAND_tOE  \
	| HW_CFG_NAND_tRC)

/* NOR Flash timing for 166 MHz setting */
#define HW_CFG_NOR_TPRC_TWLC (0 << 19)	/* Page read access cycle / Burst write latency (n+2 / n+1) (max 25ns) */
#define HW_CFG_NOR_TBTA      (0 << 16)	/* Bus turnaround cycle (n)                                 (DNA)      */
#define HW_CFG_NOR_TWP       (6 << 11)	/* Write pulse width cycle (n+1)                            (35ns)     */
#define HW_CFG_NOR_TWR       (0 << 9)	/* Write recovery cycle (n+1)                               (0ns)      */
#define HW_CFG_NOR_TAS       (0 << 7)	/* Write address setup cycle (n+1)                          (0ns)      */
#define HW_CFG_NOR_TOE       (0 << 5)	/* Output enable delay cycle (n)                            (max 25ns) */
#define HW_CFG_NOR_TRC_TLC   (0x10 << 0)	/* Read access cycle / Burst read latency (n+2 / n+1)       (100ns)    */

#define HW_CFG_FLASH0_TCR (HW_CFG_NOR_TPRC_TWLC \
	| HW_CFG_NOR_TBTA      \
	| HW_CFG_NOR_TWP       \
	| HW_CFG_NOR_TWR       \
	| HW_CFG_NOR_TAS       \
	| HW_CFG_NOR_TOE       \
	| HW_CFG_NOR_TRC_TLC)

#define HW_CFG_FLASH1_TCR    HW_CFG_FLASH0_TCR
#define HW_CFG_FLASH2_TCR    HW_CFG_FLASH0_TCR

/* SDRAM Settings */
/* #define HW_CFG_SDRAM_CAS_LATENCY        5    Default 5, Values [3..6] */
/* #define HW_CFG_SDRAM_CHIP_SELECT_CNT    1    Default 1, Vaules [1..2] */
/* #define HW_CFG_SDRAM_SPEED_GRADE        667  Default 667, Values [400,533,667,800] */
/* #define HW_CFG_SDRAM_WIDTH_BITS         16   Default 16, Vaules [8,16] */
#define HW_CFG_SDRAM_SIZE_BYTES         0x10000000	/* Total memory, not per device size */

/* ---- Variable Externs ------------------------------------- */
/* ---- Function Prototypes ---------------------------------- */

#endif /* MEMORY_SETTINGS_H */