/* * Interface to SPI flash * * Copyright (C) 2008 Atmel Corporation * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * 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., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef _SPI_FLASH_H_ #define _SPI_FLASH_H_ #include <stdint.h> #include <stddef.h> #include <console/console.h> #include <spi-generic.h> /** * container_of - cast a member of a structure out to the containing structure * @ptr: the pointer to the member. * @type: the type of the container struct this is embedded in. * @member: the name of the member within the struct. * */ #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #define min(a, b) ((a)<(b)?(a):(b)) #define CONFIG_ICH_SPI #ifdef CONFIG_ICH_SPI #define CONTROLLER_PAGE_LIMIT 64 #else /* any number larger than 4K would do, actually */ #define CONTROLLER_PAGE_LIMIT ((int)(~0U>>1)) #endif struct spi_flash { struct spi_slave *spi; const char *name; u32 size; u32 sector_size; int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf); int (*write)(struct spi_flash *flash, u32 offset, size_t len, const void *buf); int (*erase)(struct spi_flash *flash, u32 offset, size_t len); }; struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); static inline int spi_flash_read(struct spi_flash *flash, u32 offset, size_t len, void *buf) { return flash->read(flash, offset, len, buf); } static inline int spi_flash_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { return flash->write(flash, offset, len, buf); } static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, size_t len) { return flash->erase(flash, offset, len); } #endif /* _SPI_FLASH_H_ */