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/***************************************************************************
* Copyright (C) 2012 by George Harris *
* george@luminairecoffee.com *
* *
* Copyright (C) 2010 by Antonio Borneo *
* borneo.antonio@gmail.com *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
/* data structure to maintain flash ids from different vendors */
struct flash_device {
char *name;
uint8_t erase_cmd;
uint8_t chip_erase_cmd;
uint32_t device_id;
uint32_t pagesize;
unsigned long sectorsize;
unsigned long size_in_bytes;
};
#define FLASH_ID(n, es, ces, id, psize, ssize, size) \
{ \
.name = n, \
.erase_cmd = es, \
.chip_erase_cmd = ces, \
.device_id = id, \
.pagesize = psize, \
.sectorsize = ssize, \
.size_in_bytes = size \
}
extern struct flash_device flash_devices[];
/* fields in SPI flash status register */
#define SPIFLASH_BSY_BIT 0x00000001 /* WIP Bit of SPI SR on SMI SR */
#define SPIFLASH_WE_BIT 0x00000002 /* WEL Bit of SPI SR on SMI SR */
/* SPI Flash Commands */
#define SPIFLASH_READ_ID 0x9F /* Read Flash Identification */
#define SPIFLASH_READ_STATUS 0x05 /* Read Status Register */
#define SPIFLASH_WRITE_ENABLE 0x06 /* Write Enable */
#define SPIFLASH_PAGE_PROGRAM 0x02 /* Page Program */
#define SPIFLASH_FAST_READ 0x0B /* Fast Read */
#define SPIFLASH_READ 0x03 /* Normal Read */
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