drivers/mtd/spi/sf_internal.h - filogic/uboot - Gitiles

 /*
  * SPI flash internal definitions
  *
  * Copyright (C) 2008 Atmel Corporation
  * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #ifndef _SF_INTERNAL_H_
 #define _SF_INTERNAL_H_

 #include <linux/types.h>
 #include <linux/compiler.h>

 /* Dual SPI flash memories - see SPI_COMM_DUAL_... */
 enum spi_dual_flash {
 	SF_SINGLE_FLASH	= 0,
 	SF_DUAL_STACKED_FLASH	= BIT(0),
 	SF_DUAL_PARALLEL_FLASH	= BIT(1),
 };

 enum spi_nor_option_flags {
 	SNOR_F_SST_WR		= BIT(0),
 	SNOR_F_USE_FSR		= BIT(1),
 	SNOR_F_USE_UPAGE	= BIT(3),
 };

 #define SPI_FLASH_3B_ADDR_LEN		3
 #define SPI_FLASH_CMD_LEN		(1 + SPI_FLASH_3B_ADDR_LEN)
 #define SPI_FLASH_16MB_BOUN		0x1000000

 /* CFI Manufacture ID's */
 #define SPI_FLASH_CFI_MFR_SPANSION	0x01
 #define SPI_FLASH_CFI_MFR_STMICRO	0x20
 #define SPI_FLASH_CFI_MFR_MACRONIX	0xc2
 #define SPI_FLASH_CFI_MFR_SST		0xbf
 #define SPI_FLASH_CFI_MFR_WINBOND	0xef
 #define SPI_FLASH_CFI_MFR_ATMEL		0x1f

 /* Erase commands */
 #define CMD_ERASE_4K			0x20
 #define CMD_ERASE_CHIP			0xc7
 #define CMD_ERASE_64K			0xd8

 /* Write commands */
 #define CMD_WRITE_STATUS		0x01
 #define CMD_PAGE_PROGRAM		0x02
 #define CMD_WRITE_DISABLE		0x04
 #define CMD_WRITE_ENABLE		0x06
 #define CMD_QUAD_PAGE_PROGRAM		0x32

 /* Read commands */
 #define CMD_READ_ARRAY_SLOW		0x03
 #define CMD_READ_ARRAY_FAST		0x0b
 #define CMD_READ_DUAL_OUTPUT_FAST	0x3b
 #define CMD_READ_DUAL_IO_FAST		0xbb
 #define CMD_READ_QUAD_OUTPUT_FAST	0x6b
 #define CMD_READ_QUAD_IO_FAST		0xeb
 #define CMD_READ_ID			0x9f
 #define CMD_READ_STATUS			0x05
 #define CMD_READ_STATUS1		0x35
 #define CMD_READ_CONFIG			0x35
 #define CMD_FLAG_STATUS			0x70

 /* Bank addr access commands */
 #ifdef CONFIG_SPI_FLASH_BAR
 # define CMD_BANKADDR_BRWR		0x17
 # define CMD_BANKADDR_BRRD		0x16
 # define CMD_EXTNADDR_WREAR		0xC5
 # define CMD_EXTNADDR_RDEAR		0xC8
 #endif

 /* Common status */
 #define STATUS_WIP			BIT(0)
 #define STATUS_QEB_WINSPAN		BIT(1)
 #define STATUS_QEB_MXIC			BIT(6)
 #define STATUS_PEC			BIT(7)
 #define SR_BP0				BIT(2)  /* Block protect 0 */
 #define SR_BP1				BIT(3)  /* Block protect 1 */
 #define SR_BP2				BIT(4)  /* Block protect 2 */

 /* Flash timeout values */
 #define SPI_FLASH_PROG_TIMEOUT		(2 * CONFIG_SYS_HZ)
 #define SPI_FLASH_PAGE_ERASE_TIMEOUT	(5 * CONFIG_SYS_HZ)
 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT	(10 * CONFIG_SYS_HZ)

 /* SST specific */
 #ifdef CONFIG_SPI_FLASH_SST
 #define SST26_CMD_READ_BPR		0x72
 #define SST26_CMD_WRITE_BPR		0x42

 #define SST26_BPR_8K_NUM		4
 #define SST26_MAX_BPR_REG_LEN		(18 + 1)
 #define SST26_BOUND_REG_SIZE		((32 + SST26_BPR_8K_NUM * 8) * SZ_1K)

 enum lock_ctl {
 	SST26_CTL_LOCK,
 	SST26_CTL_UNLOCK,
 	SST26_CTL_CHECK
 };

 # define CMD_SST_BP		0x02    /* Byte Program */
 # define CMD_SST_AAI_WP		0xAD	/* Auto Address Incr Word Program */

 int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
 		const void *buf);
 int sst_write_bp(struct spi_flash *flash, u32 offset, size_t len,
 		const void *buf);
 #endif

 #define JEDEC_MFR(info)		((info)->id[0])
 #define JEDEC_ID(info)		(((info)->id[1]) << 8 | ((info)->id[2]))
 #define JEDEC_EXT(info)		(((info)->id[3]) << 8 | ((info)->id[4]))
 #define SPI_FLASH_MAX_ID_LEN	6

 struct spi_flash_info {
 	/* Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO]) */
 	const char	*name;

 	/*
 	 * This array stores the ID bytes.
 	 * The first three bytes are the JEDIC ID.
 	 * JEDEC ID zero means "no ID" (mostly older chips).
 	 */
 	u8		id[SPI_FLASH_MAX_ID_LEN];
 	u8		id_len;

 	/*
 	 * The size listed here is what works with SPINOR_OP_SE, which isn't
 	 * necessarily called a "sector" by the vendor.
 	 */
 	u32		sector_size;
 	u32		n_sectors;

 	u16		page_size;

 	u16		flags;
 #define SECT_4K			BIT(0)	/* CMD_ERASE_4K works uniformly */
 #define E_FSR			BIT(1)	/* use flag status register for */
 #define SST_WR			BIT(2)	/* use SST byte/word programming */
 #define WR_QPP			BIT(3)	/* use Quad Page Program */
 #define RD_QUAD			BIT(4)	/* use Quad Read */
 #define RD_DUAL			BIT(5)	/* use Dual Read */
 #define RD_QUADIO		BIT(6)	/* use Quad IO Read */
 #define RD_DUALIO		BIT(7)	/* use Dual IO Read */
 #define RD_FULL			(RD_QUAD | RD_DUAL | RD_QUADIO | RD_DUALIO)
 };

 extern const struct spi_flash_info spi_flash_ids[];

 /* Send a single-byte command to the device and read the response */
 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);

 /*
  * Send a multi-byte command to the device and read the response. Used
  * for flash array reads, etc.
  */
 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
 		size_t cmd_len, void *data, size_t data_len);

 /*
  * Send a multi-byte command to the device followed by (optional)
  * data. Used for programming the flash array, etc.
  */
 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
 		const void *data, size_t data_len);


 /* Flash erase(sectors) operation, support all possible erase commands */
 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);

 /* Lock stmicro spi flash region */
 int stm_lock(struct spi_flash *flash, u32 ofs, size_t len);

 /* Unlock stmicro spi flash region */
 int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len);

 /* Check if a stmicro spi flash region is completely locked */
 int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);

 /* Enable writing on the SPI flash */
 static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
 {
 	return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
 }

 /* Disable writing on the SPI flash */
 static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
 {
 	return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
 }

 /*
  * Used for spi_flash write operation
  * - SPI claim
  * - spi_flash_cmd_write_enable
  * - spi_flash_cmd_write
  * - spi_flash_wait_till_ready
  * - SPI release
  */
 int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
 		size_t cmd_len, const void *buf, size_t buf_len);

 /*
  * Flash write operation, support all possible write commands.
  * Write the requested data out breaking it up into multiple write
  * commands as needed per the write size.
  */
 int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 		size_t len, const void *buf);

 /*
  * Same as spi_flash_cmd_read() except it also claims/releases the SPI
  * bus. Used as common part of the ->read() operation.
  */
 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
 		size_t cmd_len, void *data, size_t data_len);

 /* Flash read operation, support all possible read commands */
 int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 		size_t len, void *data);

 #ifdef CONFIG_SPI_FLASH_MTD
 int spi_flash_mtd_register(struct spi_flash *flash);
 void spi_flash_mtd_unregister(void);
 #endif

 /**
  * spi_flash_scan - scan the SPI FLASH
  * @flash:	the spi flash structure
  *
  * The drivers can use this fuction to scan the SPI FLASH.
  * In the scanning, it will try to get all the necessary information to
  * fill the spi_flash{}.
  *
  * Return: 0 for success, others for failure.
  */
 int spi_flash_scan(struct spi_flash *flash);

 #endif /* _SF_INTERNAL_H_ */
	/*
	* SPI flash internal definitions
	*
	* Copyright (C) 2008 Atmel Corporation
	* Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#ifndef _SF_INTERNAL_H_
	#define _SF_INTERNAL_H_

	#include <linux/types.h>
	#include <linux/compiler.h>

	/* Dual SPI flash memories - see SPI_COMM_DUAL_... */
	enum spi_dual_flash {
	SF_SINGLE_FLASH = 0,
	SF_DUAL_STACKED_FLASH = BIT(0),
	SF_DUAL_PARALLEL_FLASH = BIT(1),
	};

	enum spi_nor_option_flags {
	SNOR_F_SST_WR = BIT(0),
	SNOR_F_USE_FSR = BIT(1),
	SNOR_F_USE_UPAGE = BIT(3),
	};

	#define SPI_FLASH_3B_ADDR_LEN 3
	#define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN)
	#define SPI_FLASH_16MB_BOUN 0x1000000

	/* CFI Manufacture ID's */
	#define SPI_FLASH_CFI_MFR_SPANSION 0x01
	#define SPI_FLASH_CFI_MFR_STMICRO 0x20
	#define SPI_FLASH_CFI_MFR_MACRONIX 0xc2
	#define SPI_FLASH_CFI_MFR_SST 0xbf
	#define SPI_FLASH_CFI_MFR_WINBOND 0xef
	#define SPI_FLASH_CFI_MFR_ATMEL 0x1f

	/* Erase commands */
	#define CMD_ERASE_4K 0x20
	#define CMD_ERASE_CHIP 0xc7
	#define CMD_ERASE_64K 0xd8

	/* Write commands */
	#define CMD_WRITE_STATUS 0x01
	#define CMD_PAGE_PROGRAM 0x02
	#define CMD_WRITE_DISABLE 0x04
	#define CMD_WRITE_ENABLE 0x06
	#define CMD_QUAD_PAGE_PROGRAM 0x32

	/* Read commands */
	#define CMD_READ_ARRAY_SLOW 0x03
	#define CMD_READ_ARRAY_FAST 0x0b
	#define CMD_READ_DUAL_OUTPUT_FAST 0x3b
	#define CMD_READ_DUAL_IO_FAST 0xbb
	#define CMD_READ_QUAD_OUTPUT_FAST 0x6b
	#define CMD_READ_QUAD_IO_FAST 0xeb
	#define CMD_READ_ID 0x9f
	#define CMD_READ_STATUS 0x05
	#define CMD_READ_STATUS1 0x35
	#define CMD_READ_CONFIG 0x35
	#define CMD_FLAG_STATUS 0x70

	/* Bank addr access commands */
	#ifdef CONFIG_SPI_FLASH_BAR
	# define CMD_BANKADDR_BRWR 0x17
	# define CMD_BANKADDR_BRRD 0x16
	# define CMD_EXTNADDR_WREAR 0xC5
	# define CMD_EXTNADDR_RDEAR 0xC8
	#endif

	/* Common status */
	#define STATUS_WIP BIT(0)
	#define STATUS_QEB_WINSPAN BIT(1)
	#define STATUS_QEB_MXIC BIT(6)
	#define STATUS_PEC BIT(7)
	#define SR_BP0 BIT(2) /* Block protect 0 */
	#define SR_BP1 BIT(3) /* Block protect 1 */
	#define SR_BP2 BIT(4) /* Block protect 2 */

	/* Flash timeout values */
	#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
	#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
	#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)

	/* SST specific */
	#ifdef CONFIG_SPI_FLASH_SST
	#define SST26_CMD_READ_BPR 0x72
	#define SST26_CMD_WRITE_BPR 0x42

	#define SST26_BPR_8K_NUM 4
	#define SST26_MAX_BPR_REG_LEN (18 + 1)
	#define SST26_BOUND_REG_SIZE ((32 + SST26_BPR_8K_NUM * 8) * SZ_1K)

	enum lock_ctl {
	SST26_CTL_LOCK,
	SST26_CTL_UNLOCK,
	SST26_CTL_CHECK
	};

	# define CMD_SST_BP 0x02 /* Byte Program */
	# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */

	int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
	const void *buf);
	int sst_write_bp(struct spi_flash *flash, u32 offset, size_t len,
	const void *buf);
	#endif

	#define JEDEC_MFR(info) ((info)->id[0])
	#define JEDEC_ID(info) (((info)->id[1]) << 8 \| ((info)->id[2]))
	#define JEDEC_EXT(info) (((info)->id[3]) << 8 \| ((info)->id[4]))
	#define SPI_FLASH_MAX_ID_LEN 6

	struct spi_flash_info {
	/* Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO]) */
	const char *name;

	/*
	* This array stores the ID bytes.
	* The first three bytes are the JEDIC ID.
	* JEDEC ID zero means "no ID" (mostly older chips).
	*/
	u8 id[SPI_FLASH_MAX_ID_LEN];
	u8 id_len;

	/*
	* The size listed here is what works with SPINOR_OP_SE, which isn't
	* necessarily called a "sector" by the vendor.
	*/
	u32 sector_size;
	u32 n_sectors;

	u16 page_size;

	u16 flags;
	#define SECT_4K BIT(0) /* CMD_ERASE_4K works uniformly */
	#define E_FSR BIT(1) /* use flag status register for */
	#define SST_WR BIT(2) /* use SST byte/word programming */
	#define WR_QPP BIT(3) /* use Quad Page Program */
	#define RD_QUAD BIT(4) /* use Quad Read */
	#define RD_DUAL BIT(5) /* use Dual Read */
	#define RD_QUADIO BIT(6) /* use Quad IO Read */
	#define RD_DUALIO BIT(7) /* use Dual IO Read */
	#define RD_FULL (RD_QUAD \| RD_DUAL \| RD_QUADIO \| RD_DUALIO)
	};

	extern const struct spi_flash_info spi_flash_ids[];

	/* Send a single-byte command to the device and read the response */
	int spi_flash_cmd(struct spi_slave spi, u8 cmd, void response, size_t len);

	/*
	* Send a multi-byte command to the device and read the response. Used
	* for flash array reads, etc.
	*/
	int spi_flash_cmd_read(struct spi_slave spi, const u8 cmd,
	size_t cmd_len, void *data, size_t data_len);

	/*
	* Send a multi-byte command to the device followed by (optional)
	* data. Used for programming the flash array, etc.
	*/
	int spi_flash_cmd_write(struct spi_slave spi, const u8 cmd, size_t cmd_len,
	const void *data, size_t data_len);


	/* Flash erase(sectors) operation, support all possible erase commands */
	int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);

	/* Lock stmicro spi flash region */
	int stm_lock(struct spi_flash *flash, u32 ofs, size_t len);

	/* Unlock stmicro spi flash region */
	int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len);

	/* Check if a stmicro spi flash region is completely locked */
	int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);

	/* Enable writing on the SPI flash */
	static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
	{
	return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
	}

	/* Disable writing on the SPI flash */
	static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
	{
	return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
	}

	/*
	* Used for spi_flash write operation
	* - SPI claim
	* - spi_flash_cmd_write_enable
	* - spi_flash_cmd_write
	* - spi_flash_wait_till_ready
	* - SPI release
	*/
	int spi_flash_write_common(struct spi_flash flash, const u8 cmd,
	size_t cmd_len, const void *buf, size_t buf_len);

	/*
	* Flash write operation, support all possible write commands.
	* Write the requested data out breaking it up into multiple write
	* commands as needed per the write size.
	*/
	int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
	size_t len, const void *buf);

	/*
	* Same as spi_flash_cmd_read() except it also claims/releases the SPI
	* bus. Used as common part of the ->read() operation.
	*/
	int spi_flash_read_common(struct spi_flash flash, const u8 cmd,
	size_t cmd_len, void *data, size_t data_len);

	/* Flash read operation, support all possible read commands */
	int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
	size_t len, void *data);

	#ifdef CONFIG_SPI_FLASH_MTD
	int spi_flash_mtd_register(struct spi_flash *flash);
	void spi_flash_mtd_unregister(void);
	#endif

	/**
	* spi_flash_scan - scan the SPI FLASH
	* @flash: the spi flash structure
	*
	* The drivers can use this fuction to scan the SPI FLASH.
	* In the scanning, it will try to get all the necessary information to
	* fill the spi_flash{}.
	*
	* Return: 0 for success, others for failure.
	*/
	int spi_flash_scan(struct spi_flash *flash);

	#endif /* _SF_INTERNAL_H_ */