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/*
* (C) Copyright 2010
* Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __FSMC_NAND_H__
#define __FSMC_NAND_H__
#include <linux/mtd/nand.h>
struct fsmc_regs {
u32 ctrl; /* 0x00 */
u8 reserved_1[0x40 - 0x04];
u32 pc; /* 0x40 */
u32 sts; /* 0x44 */
u32 comm; /* 0x48 */
u32 attrib; /* 0x4c */
u32 ioata; /* 0x50 */
u32 ecc1; /* 0x54 */
u32 ecc2; /* 0x58 */
u32 ecc3; /* 0x5c */
u8 reserved_2[0xfe0 - 0x60];
u32 peripid0; /* 0xfe0 */
u32 peripid1; /* 0xfe4 */
u32 peripid2; /* 0xfe8 */
u32 peripid3; /* 0xfec */
u32 pcellid0; /* 0xff0 */
u32 pcellid1; /* 0xff4 */
u32 pcellid2; /* 0xff8 */
u32 pcellid3; /* 0xffc */
};
/* ctrl register definitions */
#define FSMC_WP (1 << 7)
/* pc register definitions */
#define FSMC_RESET (1 << 0)
#define FSMC_WAITON (1 << 1)
#define FSMC_ENABLE (1 << 2)
#define FSMC_DEVTYPE_NAND (1 << 3)
#define FSMC_DEVWID_8 (0 << 4)
#define FSMC_DEVWID_16 (1 << 4)
#define FSMC_ECCEN (1 << 6)
#define FSMC_ECCPLEN_512 (0 << 7)
#define FSMC_ECCPLEN_256 (1 << 7)
#define FSMC_TCLR_1 (1 << 9)
#define FSMC_TAR_1 (1 << 13)
/* sts register definitions */
#define FSMC_CODE_RDY (1 << 15)
/* comm register definitions */
#define FSMC_TSET_0 (0 << 0)
#define FSMC_TWAIT_6 (6 << 8)
#define FSMC_THOLD_4 (4 << 16)
#define FSMC_THIZ_1 (1 << 24)
/* peripid2 register definitions */
#define FSMC_REVISION_MSK (0xf)
#define FSMC_REVISION_SHFT (0x4)
#define FSMC_VER8 0x8
/*
* There are 13 bytes of ecc for every 512 byte block and it has to be read
* consecutively and immediately after the 512 byte data block for hardware to
* generate the error bit offsets
* Managing the ecc bytes in the following way is easier. This way is similar to
* oobfree structure maintained already in u-boot nand driver
*/
#define FSMC_MAX_ECCPLACE_ENTRIES 32
struct fsmc_nand_eccplace {
u32 offset;
u32 length;
};
struct fsmc_eccplace {
struct fsmc_nand_eccplace eccplace[FSMC_MAX_ECCPLACE_ENTRIES];
};
extern int fsmc_nand_init(struct nand_chip *nand);
#endif
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