59 lines
2.7 KiB
C
59 lines
2.7 KiB
C
/***************************************************************************
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* Copyright (C) 2012 by George Harris *
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* george@luminairecoffee.com *
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* *
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* Copyright (C) 2010 by Antonio Borneo *
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* borneo.antonio@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/* data structure to maintain flash ids from different vendors */
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struct flash_device {
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char *name;
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uint8_t erase_cmd;
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uint8_t chip_erase_cmd;
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uint32_t device_id;
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uint32_t pagesize;
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unsigned long sectorsize;
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unsigned long size_in_bytes;
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};
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#define FLASH_ID(n, es, ces, id, psize, ssize, size) \
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{ \
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.name = n, \
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.erase_cmd = es, \
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.chip_erase_cmd = ces, \
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.device_id = id, \
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.pagesize = psize, \
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.sectorsize = ssize, \
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.size_in_bytes = size \
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}
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extern struct flash_device flash_devices[];
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/* fields in SPI flash status register */
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#define SPIFLASH_BSY_BIT 0x00000001 /* WIP Bit of SPI SR on SMI SR */
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#define SPIFLASH_WE_BIT 0x00000002 /* WEL Bit of SPI SR on SMI SR */
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/* SPI Flash Commands */
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#define SPIFLASH_READ_ID 0x9F /* Read Flash Identification */
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#define SPIFLASH_READ_STATUS 0x05 /* Read Status Register */
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#define SPIFLASH_WRITE_ENABLE 0x06 /* Write Enable */
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#define SPIFLASH_PAGE_PROGRAM 0x02 /* Page Program */
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#define SPIFLASH_FAST_READ 0x0B /* Fast Read */
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#define SPIFLASH_READ 0x03 /* Normal Read */
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