X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=include%2Fspi_flash.h;h=d0ce9e721ad0d74ca769c6e19ffd5e167f8e7679;hb=bd91508b50ade5c73b3749bf4e5ede31d2da7ef8;hp=1ff5af4dfcb446caf6f549f2c62b365090023c24;hpb=bff4fae4fc29376e62ac6d420b189f23a57e4294;p=people%2Fms%2Fu-boot.git diff --git a/include/spi_flash.h b/include/spi_flash.h index 1ff5af4dfc..d0ce9e721a 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -4,26 +4,39 @@ * Copyright (C) 2008 Atmel Corporation * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. * - * 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. + * SPDX-License-Identifier: GPL-2.0 */ #ifndef _SPI_FLASH_H_ #define _SPI_FLASH_H_ -#include +#include /* Because we dereference struct udevice here */ #include -#include + +#ifndef CONFIG_SF_DEFAULT_SPEED +# define CONFIG_SF_DEFAULT_SPEED 1000000 +#endif +#ifndef CONFIG_SF_DEFAULT_MODE +# define CONFIG_SF_DEFAULT_MODE SPI_MODE_3 +#endif +#ifndef CONFIG_SF_DEFAULT_CS +# define CONFIG_SF_DEFAULT_CS 0 +#endif +#ifndef CONFIG_SF_DEFAULT_BUS +# define CONFIG_SF_DEFAULT_BUS 0 +#endif + +struct spi_slave; /** * struct spi_flash - SPI flash structure * * @spi: SPI slave + * @dev: SPI flash device * @name: Name of SPI flash + * @dual_flash: Indicates dual flash memories - dual stacked, parallel + * @shift: Flash shift useful in dual parallel + * @flags: Indication of spi flash flags * @size: Total flash size * @page_size: Write (page) size * @sector_size: Sector size @@ -31,20 +44,31 @@ * @bank_read_cmd: Bank read cmd * @bank_write_cmd: Bank write cmd * @bank_curr: Current flash bank - * @poll_cmd: Poll cmd - for flash erase/program * @erase_cmd: Erase cmd 4K, 32K, 64K + * @read_cmd: Read cmd - Array Fast, Extn read and quad read. + * @write_cmd: Write cmd - page and quad program. + * @dummy_byte: Dummy cycles for read operation. * @memory_map: Address of read-only SPI flash access + * @flash_lock: lock a region of the SPI Flash + * @flash_unlock: unlock a region of the SPI Flash + * @flash_is_locked: check if a region of the SPI Flash is completely locked * @read: Flash read ops: Read len bytes at offset into buf * Supported cmds: Fast Array Read - * @write: Flash write ops: Write len bytes from buf into offeset + * @write: Flash write ops: Write len bytes from buf into offset * Supported cmds: Page Program * @erase: Flash erase ops: Erase len bytes from offset * Supported cmds: Sector erase 4K, 32K, 64K - * return 0 - Sucess, 1 - Failure + * return 0 - Success, 1 - Failure */ struct spi_flash { struct spi_slave *spi; +#ifdef CONFIG_DM_SPI_FLASH + struct udevice *dev; +#endif const char *name; + u8 dual_flash; + u8 shift; + u16 flags; u32 size; u32 page_size; @@ -55,18 +79,133 @@ struct spi_flash { u8 bank_write_cmd; u8 bank_curr; #endif - u8 poll_cmd; u8 erase_cmd; + u8 read_cmd; + u8 write_cmd; + u8 dummy_byte; void *memory_map; + + int (*flash_lock)(struct spi_flash *flash, u32 ofs, size_t len); + int (*flash_unlock)(struct spi_flash *flash, u32 ofs, size_t len); + int (*flash_is_locked)(struct spi_flash *flash, u32 ofs, size_t len); +#ifndef CONFIG_DM_SPI_FLASH + /* + * These are not strictly needed for driver model, but keep them here + * while the transition is in progress. + * + * Normally each driver would provide its own operations, but for + * SPI flash most chips use the same algorithms. One approach is + * to create a 'common' SPI flash device which knows how to talk + * to most devices, and then allow other drivers to be used instead + * if required, perhaps with a way of scanning through the list to + * find the driver that matches the device. + */ 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); +#endif }; +struct dm_spi_flash_ops { + int (*read)(struct udevice *dev, u32 offset, size_t len, void *buf); + int (*write)(struct udevice *dev, u32 offset, size_t len, + const void *buf); + int (*erase)(struct udevice *dev, u32 offset, size_t len); +}; + +/* Access the serial operations for a device */ +#define sf_get_ops(dev) ((struct dm_spi_flash_ops *)(dev)->driver->ops) + +#ifdef CONFIG_DM_SPI_FLASH +/** + * spi_flash_read_dm() - Read data from SPI flash + * + * @dev: SPI flash device + * @offset: Offset into device in bytes to read from + * @len: Number of bytes to read + * @buf: Buffer to put the data that is read + * @return 0 if OK, -ve on error + */ +int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf); + +/** + * spi_flash_write_dm() - Write data to SPI flash + * + * @dev: SPI flash device + * @offset: Offset into device in bytes to write to + * @len: Number of bytes to write + * @buf: Buffer containing bytes to write + * @return 0 if OK, -ve on error + */ +int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len, + const void *buf); + +/** + * spi_flash_erase_dm() - Erase blocks of the SPI flash + * + * Note that @len must be a muiltiple of the flash sector size. + * + * @dev: SPI flash device + * @offset: Offset into device in bytes to start erasing + * @len: Number of bytes to erase + * @return 0 if OK, -ve on error + */ +int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len); + +int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode, + struct udevice **devp); + +/* Compatibility function - this is the old U-Boot API */ +struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode); + +/* Compatibility function - this is the old U-Boot API */ +void spi_flash_free(struct spi_flash *flash); + +static inline int spi_flash_read(struct spi_flash *flash, u32 offset, + size_t len, void *buf) +{ + return spi_flash_read_dm(flash->dev, offset, len, buf); +} + +static inline int spi_flash_write(struct spi_flash *flash, u32 offset, + size_t len, const void *buf) +{ + return spi_flash_write_dm(flash->dev, offset, len, buf); +} + +static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, + size_t len) +{ + return spi_flash_erase_dm(flash->dev, offset, len); +} + +struct sandbox_state; + +int sandbox_sf_bind_emul(struct sandbox_state *state, int busnum, int cs, + struct udevice *bus, int of_offset, const char *spec); + +void sandbox_sf_unbind_emul(struct sandbox_state *state, int busnum, int cs); + +#else struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); + +/** + * Set up a new SPI flash from an fdt node + * + * @param blob Device tree blob + * @param slave_node Pointer to this SPI slave node in the device tree + * @param spi_node Cached pointer to the SPI interface this node belongs + * to + * @return 0 if ok, -1 on error + */ +struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node, + int spi_node); + void spi_flash_free(struct spi_flash *flash); static inline int spi_flash_read(struct spi_flash *flash, u32 offset, @@ -86,7 +225,21 @@ static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, { return flash->erase(flash, offset, len); } +#endif + +static inline int spi_flash_protect(struct spi_flash *flash, u32 ofs, u32 len, + bool prot) +{ + if (!flash->flash_lock || !flash->flash_unlock) + return -EOPNOTSUPP; + + if (prot) + return flash->flash_lock(flash, ofs, len); + else + return flash->flash_unlock(flash, ofs, len); +} void spi_boot(void) __noreturn; +void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst); #endif /* _SPI_FLASH_H_ */