/*
- * Common SPI flash Interface
+ * Interface to SPI flash
*
* 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.
+ *
+ * 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 <spi.h>
#include <linux/types.h>
-#include <linux/compiler.h>
-
-/* sf param flags */
-#define SECT_4K 1 << 1
-#define SECT_32K 1 << 2
-#define E_FSR 1 << 3
-#define WR_QPP 1 << 4
-
-/* Enum list - Full read commands */
-enum spi_read_cmds {
- ARRAY_SLOW = 1 << 0,
- DUAL_OUTPUT_FAST = 1 << 1,
- DUAL_IO_FAST = 1 << 2,
- QUAD_OUTPUT_FAST = 1 << 3,
- QUAD_IO_FAST = 1 << 4,
-};
-#define RD_EXTN ARRAY_SLOW | DUAL_OUTPUT_FAST | DUAL_IO_FAST
-#define RD_FULL RD_EXTN | QUAD_OUTPUT_FAST | QUAD_IO_FAST
-
-/* Dual SPI flash memories */
-enum spi_dual_flash {
- SF_SINGLE_FLASH = 0,
- SF_DUAL_STACKED_FLASH = 1 << 0,
- SF_DUAL_PARALLEL_FLASH = 1 << 1,
-};
-/**
- * struct spi_flash_params - SPI/QSPI flash device params structure
- *
- * @name: Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO])
- * @jedec: Device jedec ID (0x[1byte_manuf_id][2byte_dev_id])
- * @ext_jedec: Device ext_jedec ID
- * @sector_size: Sector size of this device
- * @nr_sectors: No.of sectors on this device
- * @e_rd_cmd: Enum list for read commands
- * @flags: Importent param, for flash specific behaviour
- */
-struct spi_flash_params {
- const char *name;
- u32 jedec;
- u16 ext_jedec;
- u32 sector_size;
- u32 nr_sectors;
- u8 e_rd_cmd;
- u16 flags;
+struct spi_flash_region {
+ unsigned int count;
+ unsigned int size;
};
-extern const struct spi_flash_params spi_flash_params_table[];
-
-/**
- * struct spi_flash - SPI flash structure
- *
- * @spi: SPI slave
- * @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 offeset
- * 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
- */
struct spi_flash {
struct spi_slave *spi;
- 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;
+ const char *name;
- void *memory_map;
- 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);
+ u32 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);
-
-/**
- * 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,
return flash->erase(flash, offset, len);
}
-void spi_boot(void) __noreturn;
-
#endif /* _SPI_FLASH_H_ */
projects / platform / kernel / u-boot.git / blobdiff