4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
33 * \brief Function library for serial Flash memory.
37 * \author Daniele Basile <asterix@develer.com>
44 #include <kern/kfile.h>
45 #include <cfg/compiler.h>
48 #include <appconfig.h>
51 * Type definition for serial flash memory.
53 typedef uint32_t flash25Addr_t;
54 typedef uint32_t flash25Size_t;
55 typedef uint8_t flash25Offset_t;
61 * \note Below are defined valid serial flash memory support to
62 * this drive. Every time we call flash25_init() function we check
63 * if memory defined are right (see flash25.c form more detail).
66 #define FLASH25_AT25F2048 1
68 #if CONFIG_FLASH25 == FLASH25_AT25F2048
69 #define FLASH25_MANUFACTURER_ID 0x1F // ATMEL
70 #define FLASH25_DEVICE_ID 0x63 // Device ID
71 #define FLASH25_PAGE_SIZE 256 // Page size in byte
72 #define FLASH25_NUM_SECTOR 4 // Number of section in serial memory
73 #define FLASH25_SECTOR_SIZE 65536UL // Section size in byte
74 #define FLASH25_MEM_SIZE FLASH25_NUM_SECTOR * FLASH25_SECTOR_SIZE
75 #define FLASH25_NUM_PAGE FLASH25_MEM_SIZE / FLASH25_PAGE_SIZE
77 #error Nothing memory defined in CONFIG_FLASH25 are support.
80 #define RDY_BIT 0x1 // Statuts of write cycle
84 * Serial flash opcode commands.
87 FLASH25_WREN = 0x6, ///< Set write enable latch
88 FLASH25_WRDI = 0x4, ///< Reset enable write latch
89 FLASH25_RDSR = 0x5, ///< Read status register
90 FLASH25_WRSR = 0x1, ///< Write status register
91 FLASH25_READ = 0x3, ///< Read data from memory array
92 FLASH25_PROGRAM = 0x2, ///< Program data into memory array
93 FLASH25_SECTORE_ERASE = 0x52, ///< Erase one sector in memory array
94 FLASH25_CHIP_ERASE = 0x62, ///< Erase all sector in memory array
95 FLASH25_RDID = 0x15 ///< Read Manufacturer and product ID
99 * Serial flash sector memory address.
101 #if CONFIG_FLASH25 != FLASH25_AT25F2048
102 #error Nothing memory defined in CONFIG_FLASH25 are support.
106 FLASH25_SECT1 = 0x0, ///< Sector 1 (0x0 -0xFFFF)
107 FLASH25_SECT2 = 0x10000, ///< Sector 2 (0x10000 -0x1FFFF)
108 FLASH25_SECT3 = 0x20000, ///< Sector 3 (0x20000 -0x2FFFF)
109 FLASH25_SECT4 = 0x30000, ///< Sector 4 (0x30000 -0x3FFFF)
112 void flash25_init(struct KFile *fd, struct KFile *_channel);
113 void flash25_chipErase(void);
114 void flash25_sectorErase(Flash25Sector sector);
115 bool flash25_test(KFile *channel);
117 #endif /* DRV_FLASH25_H */