projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| d25ce7d2 HS |
1 | /* |
| 2 | * Interface to SPI flash | |
| 3 | * | |
| 4 | * Copyright (C) 2008 Atmel Corporation | |
| 5 | * | |
| 6 | * See file CREDITS for list of people who contributed to this | |
| 7 | * project. | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or | |
| 10 | * modify it under the terms of the GNU General Public License | |
| 11 | * version 2 as published by the Free Software Foundation. | |
| 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, write to the Free Software | |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
| 21 | * MA 02111-1307 USA | |
| 22 | */ | |
| 23 | #ifndef _SPI_FLASH_H_ | |
| 24 | #define _SPI_FLASH_H_ | |
| 25 | ||
| 26 | #include <spi.h> | |
| e06ab654 | 27 | #include <linux/types.h> |
| 32b11273 | 28 | #include <linux/compiler.h> |
| d25ce7d2 | 29 | |
| d25ce7d2 HS |
30 | struct spi_flash { |
| 31 | struct spi_slave *spi; | |
| 32 | ||
| 33 | const char *name; | |
| 34 | ||
| d4aa5009 | 35 | /* Total flash size */ |
| d25ce7d2 | 36 | u32 size; |
| d4aa5009 MF |
37 | /* Write (page) size */ |
| 38 | u32 page_size; | |
| 39 | /* Erase (sector) size */ | |
| 4e6a5158 RR |
40 | u32 sector_size; |
| 41 | ||
| d25ce7d2 HS |
42 | int (*read)(struct spi_flash *flash, u32 offset, |
| 43 | size_t len, void *buf); | |
| 44 | int (*write)(struct spi_flash *flash, u32 offset, | |
| 45 | size_t len, const void *buf); | |
| 46 | int (*erase)(struct spi_flash *flash, u32 offset, | |
| 47 | size_t len); | |
| 48 | }; | |
| 49 | ||
| 50 | struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, | |
| 51 | unsigned int max_hz, unsigned int spi_mode); | |
| 52 | void spi_flash_free(struct spi_flash *flash); | |
| 53 | ||
| 54 | static inline int spi_flash_read(struct spi_flash *flash, u32 offset, | |
| 55 | size_t len, void *buf) | |
| 56 | { | |
| 57 | return flash->read(flash, offset, len, buf); | |
| 58 | } | |
| 59 | ||
| 60 | static inline int spi_flash_write(struct spi_flash *flash, u32 offset, | |
| 61 | size_t len, const void *buf) | |
| 62 | { | |
| 63 | return flash->write(flash, offset, len, buf); | |
| 64 | } | |
| 65 | ||
| 66 | static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, | |
| 67 | size_t len) | |
| 68 | { | |
| 69 | return flash->erase(flash, offset, len); | |
| 70 | } | |
| 71 | ||
| 32b11273 CR |
72 | void spi_boot(void) __noreturn; |
| 73 | ||
| d25ce7d2 | 74 | #endif /* _SPI_FLASH_H_ */ |