git.gag.com Git - fw/openocd/blob - src/flash/nor/spi.h

   1 /***************************************************************************
   2  *   Copyright (C) 2012 by George Harris                                   *
   3  *   george@luminairecoffee.com                                            *
   4  *                                                                         *
   5  *   Copyright (C) 2010 by Antonio Borneo                                  *
   6  *   borneo.antonio@gmail.com                                              *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  20  ***************************************************************************/
  21
  22 /* data structure to maintain flash ids from different vendors */
  23 struct flash_device {
  24         char *name;
  25         uint8_t erase_cmd;
  26         uint8_t chip_erase_cmd;
  27         uint32_t device_id;
  28         uint32_t pagesize;
  29         unsigned long sectorsize;
  30         unsigned long size_in_bytes;
  31 };
  32
  33 #define FLASH_ID(n, es, ces, id, psize, ssize, size) \
  34 {                               \
  35         .name = n,              \
  36         .erase_cmd = es,        \
  37         .chip_erase_cmd = ces,  \
  38         .device_id = id,        \
  39         .pagesize = psize,      \
  40         .sectorsize = ssize,    \
  41         .size_in_bytes = size   \
  42 }
  43
  44 extern const struct flash_device flash_devices[];
  45
  46 /* fields in SPI flash status register */
  47 #define SPIFLASH_BSY_BIT                0x00000001 /* WIP Bit of SPI SR on SMI SR */
  48 #define SPIFLASH_WE_BIT                 0x00000002 /* WEL Bit of SPI SR on SMI SR */
  49
  50 /* SPI Flash Commands */
  51 #define SPIFLASH_READ_ID                0x9F /* Read Flash Identification */
  52 #define SPIFLASH_READ_STATUS    0x05 /* Read Status Register */
  53 #define SPIFLASH_WRITE_ENABLE   0x06 /* Write Enable */
  54 #define SPIFLASH_PAGE_PROGRAM   0x02 /* Page Program */
  55 #define SPIFLASH_FAST_READ              0x0B /* Fast Read */
  56 #define SPIFLASH_READ                   0x03 /* Normal Read */