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   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2018-2019 by Andreas Bolsch                             *
   5  *   andreas.bolsch@mni.thm.de                                             *
   6  *                                                                         *
   7  *   Copyright (C) 2012 by George Harris                                   *
   8  *   george@luminairecoffee.com                                            *
   9  *                                                                         *
  10  *   Copyright (C) 2010 by Antonio Borneo                                  *
  11  *   borneo.antonio@gmail.com                                              *
  12  ***************************************************************************/
  13
  14 #ifndef OPENOCD_FLASH_NOR_SPI_H
  15 #define OPENOCD_FLASH_NOR_SPI_H
  16
  17 #ifndef __ASSEMBLER__
  18
  19 /* data structure to maintain flash ids from different vendors */
  20 struct flash_device {
  21         const char *name;
  22         uint8_t read_cmd;
  23         uint8_t qread_cmd;
  24         uint8_t pprog_cmd;
  25         uint8_t erase_cmd;
  26         uint8_t chip_erase_cmd;
  27         uint32_t device_id;
  28         uint32_t pagesize;
  29         uint32_t sectorsize;
  30         uint32_t size_in_bytes;
  31 };
  32
  33 #define FLASH_ID(n, re, qr, pp, es, ces, id, psize, ssize, size) \
  34 {                                       \
  35         .name = n,                      \
  36         .read_cmd = re,                 \
  37         .qread_cmd = qr,                \
  38         .pprog_cmd = pp,                \
  39         .erase_cmd = es,                \
  40         .chip_erase_cmd = ces,          \
  41         .device_id = id,                \
  42         .pagesize = psize,              \
  43         .sectorsize = ssize,            \
  44         .size_in_bytes = size,          \
  45 }
  46
  47 #define FRAM_ID(n, re, qr, pp, id, size) \
  48 {                                       \
  49         .name = n,                      \
  50         .read_cmd = re,                 \
  51         .qread_cmd = qr,                \
  52         .pprog_cmd = pp,                \
  53         .erase_cmd = 0x00,              \
  54         .chip_erase_cmd = 0x00,         \
  55         .device_id = id,                \
  56         .pagesize = 0,                  \
  57         .sectorsize = 0,                \
  58         .size_in_bytes = size,          \
  59 }
  60
  61 extern const struct flash_device flash_devices[];
  62
  63 #endif
  64
  65 /* fields in SPI flash status register */
  66 #define SPIFLASH_BSY            0
  67 #define SPIFLASH_BSY_BIT        (1 << SPIFLASH_BSY)     /* WIP Bit of SPI SR */
  68 #define SPIFLASH_WE                     1
  69 #define SPIFLASH_WE_BIT         (1 << SPIFLASH_WE)      /* WEL Bit of SPI SR */
  70
  71 /* SPI Flash Commands */
  72 #define SPIFLASH_READ_ID                0x9F /* Read Flash Identification */
  73 #define SPIFLASH_READ_MID               0xAF /* Read Flash Identification, multi-io */
  74 #define SPIFLASH_READ_STATUS    0x05 /* Read Status Register */
  75 #define SPIFLASH_WRITE_ENABLE   0x06 /* Write Enable */
  76 #define SPIFLASH_PAGE_PROGRAM   0x02 /* Page Program */
  77 #define SPIFLASH_FAST_READ              0x0B /* Fast Read */
  78 #define SPIFLASH_READ                   0x03 /* Normal Read */
  79 #define SPIFLASH_MASS_ERASE             0xC7 /* Mass Erase */
  80 #define SPIFLASH_READ_SFDP              0x5A /* Read Serial Flash Discoverable Parameters */
  81
  82 #define SPIFLASH_DEF_PAGESIZE   256  /* default for non-page-oriented devices (FRAMs) */
  83
  84 #endif /* OPENOCD_FLASH_NOR_SPI_H */