fsl_nfc.h
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/*
* (c) 2009 Magnus Lilja <lilja.magnus@gmail.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 __FSL_NFC_H
#define __FSL_NFC_H
/*
* Register map and bit definitions for the Freescale NAND Flash Controller
* present in various i.MX devices.
*
* MX31 and MX27 have version 1, which has:
* 4 512-byte main buffers and
* 4 16-byte spare buffers
* to support up to 2K byte pagesize nand.
* Reading or writing a 2K page requires 4 FDI/FDO cycles.
*
* MX25 and MX35 have version 2.1, which has:
* 8 512-byte main buffers and
* 8 64-byte spare buffers
* to support up to 4K byte pagesize nand.
* Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle.
* Also some of registers are moved and/or changed meaning as seen below.
*/
#if defined(CONFIG_MX27) || defined(CONFIG_MX31)
#define MXC_NFC_V1
#define is_mxc_nfc_1() 1
#define is_mxc_nfc_21() 0
#elif defined(CONFIG_MX25) || defined(CONFIG_MX35)
#define MXC_NFC_V2_1
#define is_mxc_nfc_1() 0
#define is_mxc_nfc_21() 1
#else
#error "MXC NFC implementation not supported"
#endif
#if defined(MXC_NFC_V1)
#define NAND_MXC_NR_BUFS 4
#define NAND_MXC_SPARE_BUF_SIZE 16
#define NAND_MXC_REG_OFFSET 0xe00
#define NAND_MXC_2K_MULTI_CYCLE
#elif defined(MXC_NFC_V2_1)
#define NAND_MXC_NR_BUFS 8
#define NAND_MXC_SPARE_BUF_SIZE 64
#define NAND_MXC_REG_OFFSET 0x1e00
#endif
struct fsl_nfc_regs {
u8 main_area[NAND_MXC_NR_BUFS][0x200];
u8 spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE];
/*
* reserved size is offset of nfc registers
* minus total main and spare sizes
*/
u8 reserved1[NAND_MXC_REG_OFFSET
- NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)];
#if defined(MXC_NFC_V1)
u16 buf_size;
u16 reserved2;
u16 buf_addr;
u16 flash_addr;
u16 flash_cmd;
u16 config;
u16 ecc_status_result;
u16 rsltmain_area;
u16 rsltspare_area;
u16 wrprot;
u16 unlockstart_blkaddr;
u16 unlockend_blkaddr;
u16 nf_wrprst;
u16 config1;
u16 config2;
#elif defined(MXC_NFC_V2_1)
u16 reserved2[2];
u16 buf_addr;
u16 flash_addr;
u16 flash_cmd;
u16 config;
u32 ecc_status_result;
u16 spare_area_size;
u16 wrprot;
u16 reserved3[2];
u16 nf_wrprst;
u16 config1;
u16 config2;
u16 reserved4;
u16 unlockstart_blkaddr;
u16 unlockend_blkaddr;
u16 unlockstart_blkaddr1;
u16 unlockend_blkaddr1;
u16 unlockstart_blkaddr2;
u16 unlockend_blkaddr2;
u16 unlockstart_blkaddr3;
u16 unlockend_blkaddr3;
#endif
};
/*
* Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register for Command
* operation
*/
#define NFC_CMD 0x1
/*
* Set INT to 0, FADD to 1, rest to 0 in NFC_CONFIG2 Register for Address
* operation
*/
#define NFC_ADDR 0x2
/*
* Set INT to 0, FDI to 1, rest to 0 in NFC_CONFIG2 Register for Input
* operation
*/
#define NFC_INPUT 0x4
/*
* Set INT to 0, FDO to 001, rest to 0 in NFC_CONFIG2 Register for Data
* Output operation
*/
#define NFC_OUTPUT 0x8
/*
* Set INT to 0, FD0 to 010, rest to 0 in NFC_CONFIG2 Register for Read ID
* operation
*/
#define NFC_ID 0x10
/*
* Set INT to 0, FDO to 100, rest to 0 in NFC_CONFIG2 Register for Read
* Status operation
*/
#define NFC_STATUS 0x20
/*
* Set INT to 1, rest to 0 in NFC_CONFIG2 Register for Read Status
* operation
*/
#define NFC_INT 0x8000
#ifdef MXC_NFC_V2_1
#define NFC_4_8N_ECC (1 << 0)
#endif
#define NFC_SP_EN (1 << 2)
#define NFC_ECC_EN (1 << 3)
#define NFC_INT_MSK (1 << 4)
#define NFC_BIG (1 << 5)
#define NFC_RST (1 << 6)
#define NFC_CE (1 << 7)
#define NFC_ONE_CYCLE (1 << 8)
#define NFC_FP_INT (1 << 11)
#endif /* __FSL_NFC_H */