include/linux/mtd/omap_gpmc.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * (C) Copyright 2004-2008 Texas Instruments, <www.ti.com>
   4  * Rohit Choraria <rohitkc@ti.com>
   5  *
   6  * (C) Copyright 2013 Andreas Bießmann <andreas@biessmann.org>
   7  */
   8 #ifndef __ASM_OMAP_GPMC_H
   9 #define __ASM_OMAP_GPMC_H
  10
  11 /* Maximum Number of Chip Selects */
  12 #define GPMC_CS_NUM     8
  13
  14 #define GPMC_BUF_EMPTY  0
  15 #define GPMC_BUF_FULL   1
  16 #define GPMC_MAX_SECTORS        8
  17
  18 enum omap_ecc {
  19         /* 1-bit  ECC calculation by Software, Error detection by Software */
  20         OMAP_ECC_HAM1_CODE_SW = 1, /* avoid un-initialized int can be 0x0 */
  21         /* 1-bit  ECC calculation by GPMC, Error detection by Software */
  22         /* ECC layout compatible to legacy ROMCODE. */
  23         OMAP_ECC_HAM1_CODE_HW,
  24         /* 4-bit  ECC calculation by GPMC, Error detection by Software */
  25         OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
  26         /* 4-bit  ECC calculation by GPMC, Error detection by ELM */
  27         OMAP_ECC_BCH4_CODE_HW,
  28         /* 8-bit  ECC calculation by GPMC, Error detection by Software */
  29         OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
  30         /* 8-bit  ECC calculation by GPMC, Error detection by ELM */
  31         OMAP_ECC_BCH8_CODE_HW,
  32         /* 16-bit  ECC calculation by GPMC, Error detection by ELM */
  33         OMAP_ECC_BCH16_CODE_HW,
  34 };
  35
  36 struct gpmc_cs {
  37         u32 config1;            /* 0x00 */
  38         u32 config2;            /* 0x04 */
  39         u32 config3;            /* 0x08 */
  40         u32 config4;            /* 0x0C */
  41         u32 config5;            /* 0x10 */
  42         u32 config6;            /* 0x14 */
  43         u32 config7;            /* 0x18 */
  44         u32 nand_cmd;           /* 0x1C */
  45         u32 nand_adr;           /* 0x20 */
  46         u32 nand_dat;           /* 0x24 */
  47         u8 res[8];              /* blow up to 0x30 byte */
  48 };
  49
  50 struct bch_res_0_3 {
  51         u32 bch_result_x[4];
  52 };
  53
  54 struct bch_res_4_6 {
  55         u32 bch_result_x[3];
  56 };
  57
  58 struct gpmc {
  59         u8 res1[0x10];
  60         u32 sysconfig;          /* 0x10 */
  61         u8 res2[0x4];
  62         u32 irqstatus;          /* 0x18 */
  63         u32 irqenable;          /* 0x1C */
  64         u8 res3[0x20];
  65         u32 timeout_control;    /* 0x40 */
  66         u8 res4[0xC];
  67         u32 config;             /* 0x50 */
  68         u32 status;             /* 0x54 */
  69         u8 res5[0x8];           /* 0x58 */
  70         struct gpmc_cs cs[8];   /* 0x60, 0x90, .. */
  71         u32 prefetch_config1;   /* 0x1E0 */
  72         u32 prefetch_config2;   /* 0x1E4 */
  73         u32 res6;               /* 0x1E8 */
  74         u32 prefetch_control;   /* 0x1EC */
  75         u32 prefetch_status;    /* 0x1F0 */
  76         u32 ecc_config;         /* 0x1F4 */
  77         u32 ecc_control;        /* 0x1F8 */
  78         u32 ecc_size_config;    /* 0x1FC */
  79         u32 ecc1_result;        /* 0x200 */
  80         u32 ecc2_result;        /* 0x204 */
  81         u32 ecc3_result;        /* 0x208 */
  82         u32 ecc4_result;        /* 0x20C */
  83         u32 ecc5_result;        /* 0x210 */
  84         u32 ecc6_result;        /* 0x214 */
  85         u32 ecc7_result;        /* 0x218 */
  86         u32 ecc8_result;        /* 0x21C */
  87         u32 ecc9_result;        /* 0x220 */
  88         u8 res7[12];            /* 0x224 */
  89         u32 testmomde_ctrl;     /* 0x230 */
  90         u8 res8[12];            /* 0x234 */
  91         struct bch_res_0_3 bch_result_0_3[GPMC_MAX_SECTORS]; /* 0x240,0x250, */
  92         u8 res9[16 * 4];        /* 0x2C0 - 0x2FF */
  93         struct bch_res_4_6 bch_result_4_6[GPMC_MAX_SECTORS]; /* 0x300,0x310, */
  94 };
  95
  96 /* Used for board specific gpmc initialization */
  97 extern const struct gpmc *gpmc_cfg;
  98 extern char gpmc_cs0_flash;
  99
 100 #endif /* __ASM_OMAP_GPMC_H */