include/fsl_nfc.h

   1 /*
   2  * (c) 2009 Magnus Lilja <lilja.magnus@gmail.com>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #ifndef __FSL_NFC_H
  24 #define __FSL_NFC_H
  25
  26 /*
  27  * TODO: Use same register defs for nand_spl mxc nand driver
  28  * and mtd mxc nand driver.
  29  *
  30  * Register map and bit definitions for the Freescale NAND Flash
  31  * Controller present in various i.MX devices.
  32  *
  33  * MX31 and MX27 have version 1 which has
  34  *      4 512 byte main buffers and
  35  *      4 16 byte spare buffers
  36  *      to support up to 2K byte pagesize nand.
  37  *      Reading or writing a 2K page requires 4 FDI/FDO cycles.
  38  *
  39  * MX25 has version 1.1 which has
  40  *      8 512 byte main buffers and
  41  *      8 64 byte spare buffers
  42  *      to support up to 4K byte pagesize nand.
  43  *      Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle.
  44  *      Also some of registers are moved and/or changed meaning as seen below.
  45  */
  46 #if defined(CONFIG_MX31) || defined(CONFIG_MX27)
  47 #define MXC_NFC_V1
  48 #elif defined(CONFIG_MX25)
  49 #define MXC_NFC_V1_1
  50 #else
  51 #warning "MXC NFC version not defined"
  52 #endif
  53
  54 #if defined(MXC_NFC_V1)
  55 #define NAND_MXC_NR_BUFS                4
  56 #define NAND_MXC_SPARE_BUF_SIZE         16
  57 #define NAND_MXC_REG_OFFSET             0xe00
  58 #define NAND_MXC_2K_MULTI_CYCLE         1
  59 #elif defined(MXC_NFC_V1_1)
  60 #define NAND_MXC_NR_BUFS                8
  61 #define NAND_MXC_SPARE_BUF_SIZE         64
  62 #define NAND_MXC_REG_OFFSET             0x1e00
  63 #else
  64 #error "define CONFIG_NAND_MXC_VXXX to use the mxc spl_nand driver"
  65 #endif
  66
  67 struct fsl_nfc_regs {
  68         u32 main_area[NAND_MXC_NR_BUFS][512/4];
  69         u32 spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE/4];
  70         /*
  71          * reserved size is offset of nfc registers
  72          * minus total main and spare sizes
  73          */
  74         u8 reserved1[NAND_MXC_REG_OFFSET
  75                 - NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)];
  76 #if defined(MXC_NFC_V1)
  77         u16 bufsiz;
  78         u16 reserved2;
  79         u16 buffer_address;
  80         u16 flash_add;
  81         u16 flash_cmd;
  82         u16 configuration;
  83         u16 ecc_status_result;
  84         u16 ecc_rslt_main_area;
  85         u16 ecc_rslt_spare_area;
  86         u16 nf_wr_prot;
  87         u16 unlock_start_blk_add;
  88         u16 unlock_end_blk_add;
  89         u16 nand_flash_wr_pr_st;
  90         u16 nand_flash_config1;
  91         u16 nand_flash_config2;
  92 #elif defined(MXC_NFC_V1_1)
  93         u16 reserved2[2];
  94         u16 buffer_address;
  95         u16 flash_add;
  96         u16 flash_cmd;
  97         u16 configuration;
  98         u16 ecc_status_result;
  99         u16 ecc_status_result2;
 100         u16 spare_area_size;
 101         u16 nf_wr_prot;
 102         u16 reserved3[2];
 103         u16 nand_flash_wr_pr_st;
 104         u16 nand_flash_config1;
 105         u16 nand_flash_config2;
 106         u16 reserved4;
 107         u16 unlock_start_blk_add0;
 108         u16 unlock_end_blk_add0;
 109         u16 unlock_start_blk_add1;
 110         u16 unlock_end_blk_add1;
 111         u16 unlock_start_blk_add2;
 112         u16 unlock_end_blk_add2;
 113         u16 unlock_start_blk_add3;
 114         u16 unlock_end_blk_add3;
 115 #endif
 116 };
 117
 118 /*
 119  * Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register for Command
 120  * operation
 121  */
 122 #define NFC_CMD         0x1
 123
 124 /*
 125  * Set INT to 0, FADD to 1, rest to 0 in NFC_CONFIG2 Register for Address
 126  * operation
 127  */
 128 #define NFC_ADDR        0x2
 129
 130 /*
 131  * Set INT to 0, FDI to 1, rest to 0 in NFC_CONFIG2 Register for Input
 132  * operation
 133  */
 134 #define NFC_INPUT       0x4
 135
 136 /*
 137  * Set INT to 0, FDO to 001, rest to 0 in NFC_CONFIG2 Register for Data
 138  * Output operation
 139  */
 140 #define NFC_OUTPUT      0x8
 141
 142 /*
 143  * Set INT to 0, FD0 to 010, rest to 0 in NFC_CONFIG2 Register for Read ID
 144  * operation
 145  */
 146 #define NFC_ID          0x10
 147
 148 /*
 149  * Set INT to 0, FDO to 100, rest to 0 in NFC_CONFIG2 Register for Read
 150  * Status operation
 151  */
 152 #define NFC_STATUS      0x20
 153
 154 /*
 155  * Set INT to 1, rest to 0 in NFC_CONFIG2 Register for Read Status
 156  * operation
 157  */
 158 #define NFC_INT         0x8000
 159
 160 #ifdef MXC_NFC_V1_1
 161 #define NFC_4_8N_ECC    (1 << 0)
 162 #endif
 163 #define NFC_SP_EN       (1 << 2)
 164 #define NFC_ECC_EN      (1 << 3)
 165 #define NFC_INT_MSK     (1 << 4)
 166 #define NFC_BIG         (1 << 5)
 167 #define NFC_RST         (1 << 6)
 168 #define NFC_CE          (1 << 7)
 169 #define NFC_ONE_CYCLE   (1 << 8)
 170
 171 #endif /* __FSL_NFC_H */