mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-26 05:34:30 +08:00
236 lines
6.8 KiB
C
236 lines
6.8 KiB
C
/*
|
|
* Common SPI flash Interface
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _SPI_FLASH_H_
|
|
#define _SPI_FLASH_H_
|
|
|
|
#include <dm.h> /* Because we dereference struct udevice here */
|
|
#include <linux/types.h>
|
|
|
|
#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
|
|
* @flags: Indication of spi flash flags
|
|
* @name: Name of SPI flash
|
|
* @dual_flash: Indicates dual flash memories - dual stacked, parallel
|
|
* @shift: Flash shift useful in dual parallel
|
|
* @size: Total flash size
|
|
* @page_size: Write (page) size
|
|
* @sector_size: Sector size
|
|
* @erase_size: Erase size
|
|
* @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
|
|
* @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 offset
|
|
* Supported cmds: Page Program
|
|
* @erase: Flash erase ops: Erase len bytes from offset
|
|
* Supported cmds: Sector erase 4K, 32K, 64K
|
|
* return 0 - Success, 1 - Failure
|
|
*/
|
|
struct spi_flash {
|
|
struct spi_slave *spi;
|
|
#ifdef CONFIG_DM_SPI_FLASH
|
|
struct udevice *dev;
|
|
u16 flags;
|
|
#endif
|
|
const char *name;
|
|
u8 dual_flash;
|
|
u8 shift;
|
|
|
|
u32 size;
|
|
u32 page_size;
|
|
u32 sector_size;
|
|
u32 erase_size;
|
|
#ifdef CONFIG_SPI_FLASH_BAR
|
|
u8 bank_read_cmd;
|
|
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;
|
|
#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);
|
|
|
|
int spi_flash_remove(struct udevice *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,
|
|
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
|
|
|
|
void spi_boot(void) __noreturn;
|
|
void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
|
|
|
|
#endif /* _SPI_FLASH_H_ */
|