/*
* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
* *
This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* *
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.
* *
Description:
*/

#ifndef AMLMTD_H_INCLUDED
#define AMLMTD_H_INCLUDED

#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand_ecc.h>
#include <nand.h>
#include <amlogic/aml_nand.h>
#include "aml_hwctrl.h"
#include "partition_table.h"

#define CONFIG_MTD_PARTITIONS 1

/*
 ** Max page list cnt for usrdef mode
  */
#define NAND_PAGELIST_CNT 16

/*
** nand read retry info, max equals to Zero, that means no need retry.
 */
struct nand_retry_t {
	unsigned id;
	unsigned max;
	unsigned no_rb;
};

typedef struct _nand_cmd {
	unsigned char type;
	unsigned char val;
}nand_cmd_t;

/*
** must same with asm/arch/nand.h
*
*ext bits:
*	bit 26: pagelist enable flag,
*	bit 24: a2 cmd enable flag,
*	bit 23: no_rb,
*	bit 22: large.  large for what?
*	bit 19: randomizer mode.
*	bit 14-16: ecc mode
*	bit 13: short mode
*	bit 6-12:short page size
*	bit 0-5: ecc pages.
*/
typedef struct nand_setup {
    union {
        uint32_t d32;
        struct {
            unsigned cmd:22;
            unsigned large_page:1; // 22
            unsigned no_rb:1;      // 23 from efuse
            unsigned a2:1;         // 24
            unsigned reserved25:1; // 25
            unsigned page_list:1;  // 26
            unsigned sync_mode:2;  // 27 from efuse
            unsigned size:2;       // 29 from efuse
            unsigned active:1;     // 31
        } b;
    } cfg;
    uint16_t id;
    uint16_t max; // id:0x100 user, max:0 disable.
} nand_setup_t;

typedef struct _ext_info{
	uint32_t read_info;		//nand_read_info;
	uint32_t new_type;		//new_nand_type;
	uint32_t page_per_blk;		//pages_in_block;
	uint32_t xlc;			//slc=1, mlc=2, tlc=3.
	uint32_t ce_mask;
	/*
	 * copact mode: boot means whole uboot
	 * it's easy to understood that copies of
	 * bl2 and fip are the same.
	 * discrete mode, boot means the fip only.
	 */
	uint32_t boot_num;
	uint32_t each_boot_pages;
	/* for comptible reason */
	uint32_t bbt_occupy_pages;
	uint32_t bbt_start_block;
} ext_info_t;

#define NAND_FIPMODE_COMPACT    (0)
#define NAND_FIPMODE_DISCRETE   (1)

/* if you don't need skip the bad blocks when add
 * partitions, please enable this macro.
 * #define CONFIG_NOT_SKIP_BAD_BLOCK
 */
typedef struct _fip_info {
    uint16_t version; //version
    uint16_t mode;    //compact or discrete
    uint32_t fip_start; //fip start, pages
}fip_info_t;

typedef struct _nand_page0 {
	nand_setup_t nand_setup;		//8
	unsigned char page_list[16]; 	//16
	nand_cmd_t retry_usr[32];		//64 (32 cmd max I/F)
	ext_info_t ext_info;			//72
	/* added for slc nand in mtd drivers 20170503*/
	fip_info_t fip_info;
	uint32_t ddrp_start_page;
} nand_page0_t;	//384 bytes max.


typedef union nand_core_clk {
    /** raw register data */
    uint32_t d32;
    /** register bits */
    struct {
        unsigned clk_div:7;
        unsigned reserved0:1;
        unsigned clk_en:1;
        unsigned clk_sel:3;
        unsigned not_used:20;
    } b;
} nand_core_clk_t;


/***************ERROR CODING*******************/
#define NAND_CHIP_ID_ERR            1
#define NAND_SHIP_BAD_BLOCK_ERR     2
#define NAND_CHIP_REVB_HY_ERR       3

/*fixme container_of this function is in common.h, but if include it, it
 will case serial compile error*/
/**
 * container_of - cast a member of a structure out to the containing structure
 * @ptr:	the pointer to the member.
 * @type:	the type of the container struct this is embedded in.
 * @member:	the name of the member within the struct.
 *
 */

/** Register defination **/
#define NAND_BOOT_NAME	"bootloader"
#define NAND_NORMAL_NAME "nandnormal"
#define NAND_RESERVED_NAME "nandreserved"
/* Max total is 1024 as romboot says so... */
#define BOOT_TOTAL_PAGES	(1024)
/* This depends on uboot size */
#define BOOT_PAGES_PER_COPY (1024)
#define BOOT_COPY_NUM (BOOT_TOTAL_PAGES / BOOT_PAGES_PER_COPY)
/*it also means normal device start addrress */

/* reserved region info */
#define NAND_GAP_BLOCK_NUM 4
#define NAND_BBT_BLOCK_NUM 4
#define NAND_ENV_BLOCK_NUM 8
#define NAND_KEY_BLOCK_NUM 8
#define NAND_DTB_BLOCK_NUM 4
#define NAND_DDR_BLOCK_NUM 2

#define AML_CHIP_NONE_RB	4
#define AML_INTERLEAVING_MODE	8

#define AML_NAND_CE0	0xe
#define AML_NAND_CE1	0xd
#define AML_NAND_CE2	0xb
#define AML_NAND_CE3	0x7

#define AML_BADBLK_POS	0


#define NAND_ECC_OPTIONS_MASK	0x0000000f
#define NAND_PLANE_OPTIONS_MASK	0x000000f0
#define NAND_TIMING_OPTIONS_MASK	0x00000f00
#define NAND_BUSW_OPTIONS_MASK		0x0000f000
#define NAND_INTERLEAVING_OPTIONS_MASK	0x000f0000

#define NAND_TWO_PLANE_MODE	0x00000010
#define NAND_TIMING_MODE0	0x00000000
#define NAND_TIMING_MODE1	0x00000100
#define NAND_TIMING_MODE2	0x00000200
#define NAND_TIMING_MODE3	0x00000300
#define NAND_TIMING_MODE4	0x00000400
#define NAND_TIMING_MODE5	0x00000500
#define NAND_INTERLEAVING_MODE	0x00010000

#define DEFAULT_T_REA	40
#define DEFAULT_T_RHOH	0
#define NAND_DEFAULT_OPTIONS	(NAND_TIMING_MODE5 | NAND_ECC_BCH8_MODE)

#define AML_NAND_BUSY_TIMEOUT	0x40000
#define AML_DMA_BUSY_TIMEOUT	0x100000
#define MAX_ID_LEN	8

#define NAND_CMD_PLANE2_READ_START	0x06
#define NAND_CMD_TWOPLANE_PREVIOS_READ	0x60
#define NAND_CMD_TWOPLANE_READ1	0x5a
#define NAND_CMD_TWOPLANE_READ2	0xa5
#define NAND_CMD_TWOPLANE_WRITE2_MICRO	0x80
#define NAND_CMD_TWOPLANE_WRITE2	0x81
#define NAND_CMD_DUMMY_PROGRAM	0x11
#define NAND_CMD_ERASE1_END	0xd1
#define NAND_CMD_MULTI_CHIP_STATUS	0x78
//#define NAND_CMD_SET_FEATURES	0xEF
//#define NAND_CMD_GET_FEATURES	0xEE
#define ONFI_TIMING_ADDR	0x01


#define NAND_STATUS_READY_MULTI	0x20

#define NAND_BLOCK_GOOD	0
#define NAND_BLOCK_BAD	1
#define NAND_FACTORY_BAD	2
#define BAD_BLK_LEVEL	2
#define	FACTORY_BAD_BLOCK_ERROR	159
#define MINI_PART_SIZE	0x100000
#define NAND_MINI_PART_NUM	4
#define MAX_BAD_BLK_NUM	2000
#define MAX_MTD_PART_NUM	16
#define MAX_MTD_PART_NAME_LEN	24

#define BBT_NAND_MAGIC	"nbbt"
#define ENV_NAND_MAGIC	"nenv"
#define KEY_NAND_MAGIC	"nkey"
#define SEC_NAND_MAGIC	"nsec"
#define DTB_NAND_MAGIC  "ndtb"
#define DDR_NAND_MAGIC  "nddr"
#define NAND_SYS_PART_SIZE	0x8000000

struct aml_nand_flash_dev {
	char *name;
	u8 id[MAX_ID_LEN];
	unsigned pagesize;
	unsigned chipsize;
	unsigned erasesize;
	unsigned oobsize;
	unsigned internal_chipnr;
	unsigned T_REA;
	unsigned T_RHOH;
	u8 onfi_mode;
	unsigned options;
};

struct aml_nand_part_info {
	char mtd_part_magic[4];
	char mtd_part_name[MAX_MTD_PART_NAME_LEN];
	uint64_t size;
	uint64_t offset;
	u_int32_t mask_flags;
};

struct aml_nand_bbt_info {
	int16_t nand_bbt[MAX_BAD_BLK_NUM];
};

struct aml_nandrsv_info_t {
	struct mtd_info *mtd;
	struct valid_node_t *valid_node;
	struct free_node_t *free_node;
	unsigned int start_block;
	unsigned int end_block;
	unsigned int size;
	char name[8];
	u_char valid;
	u_char init;
	u_char part_num_before_sys;
};

/*define abnormal state for reserved area*/
#define POWER_ABNORMAL_FLAG	0x01
#define ECC_ABNORMAL_FLAG	0x02
struct valid_node_t {
	int16_t ec;
	int16_t	phy_blk_addr;
	int16_t	phy_page_addr;
	int timestamp;
	int16_t status;
};

struct free_node_t {
	unsigned int index;
	int16_t ec;
	int16_t	phy_blk_addr;
	int dirty_flag;
	struct free_node_t *next;
};

struct oobinfo_t {
	char name[4];
	int16_t ec;
	unsigned timestamp: 15;
	unsigned status_page: 1;
};

struct aml_nand_bch_desc {
    char * name;
    unsigned bch_mode;
    unsigned bch_unit_size;
    unsigned bch_bytes;
    unsigned user_byte_mode;
};

//#define NEW_NAND_SUPPORT

#ifdef NEW_NAND_SUPPORT
#define RETRY_NAND_MAGIC	"refv"
#define RETRY_NAND_BLK_NUM	2
#define RETRY_NAND_COPY_NUM	4

#define	READ_RETRY_REG_NUM	8
#define	READ_RETRY_CNT		30
#define	HYNIX_RETRY_CNT		20


#define	ENHANCE_SLC_REG_NUM	5

#define	READ_RETRY_ZERO	((char)-1)
#define	NAND_CMD_HYNIX_GET_VALUE	0x37
#define	NAND_CMD_HYNIX_SET_VALUE_START	0x36
#define	NAND_CMD_HYNIX_SET_VALUE_END	0x16

#define	NAND_CMD_TOSHIBA_PRE_CON1	0x5c
#define	NAND_CMD_TOSHIBA_PRE_CON2	0xc5
#define	NAND_CMD_TOSHIBA_SET_VALUE	0x55
#define	NAND_CMD_TOSHIBA_BEF_COMMAND1	0x26
#define	NAND_CMD_TOSHIBA_BEF_COMMAND2	0x5d
#define NAND_CMD_SAMSUNG_SET_VALUE	0XA1
#define NAND_CMD_MICRON_SET_VALUE	0XEF

#define	HYNIX_26NM_8GB	1
#define	HYNIX_26NM_4GB	2
#define	HYNIX_20NM_8GB	3
#define	HYNIX_20NM_4GB	4
#define	HYNIX_20NM_LGA_8GB	5
#define	HYNIX_1YNM_8GB	6
#define	TOSHIBA_24NM	20
#define	TOSHIBA_A19NM	21
#define	SUMSUNG_2XNM	30
#define	MICRON_20NM	40
#define	SANDISK_19NM	50
#define	SANDISK_24NM	51
#define	SANDISK_A19NM	52


#define	DYNAMIC_REG_NUM	3
#define	DYNAMIC_REG_INIT_NUM	9
#define	DYNAMIC_READ_CNT_LOWER	15
#define	DYNAMIC_READ_CNT_UPPER	19
#define	DYNAMIC_CNT_LOWER	16
#define	DYNAMIC_CNT_UPPER	20


#define	DYNAMIC_READ_CASE_NUM	20


#define	NAND_CMD_SANDISK_INIT_ONE	0x3B
#define	NAND_CMD_SANDISK_INIT_TWO	0xB9

#define	NAND_CMD_SANDISK_DSP_ON	0x26
#define	NAND_CMD_SANDISK_RETRY_STA	0x5D
#define	NAND_CMD_SANDISK_LOAD_VALUE_ONE	0x53
#define	NAND_CMD_SANDISK_LOAD_VALUE_TWO	0x54

#define	NAND_CMD_SANDISK_DYNAMIC_ENABLE	0xB6
#define	NAND_CMD_SANDISK_DYNAMIC_DISABLE	0xD6
#define	NAND_CMD_SANDISK_SLC	0xA2
#define	NAND_CMD_SANDISK_SET_VALUE	0XEF
#define	NAND_CMD_SANDISK_GET_VALUE	0XEE
#define	NAND_CMD_SANDISK_SET_OUTPUT_DRV	0x10
#define	NAND_CMD_SANDISK_SET_VENDOR_SPC	0x80

#define	NAND_CMD_MICRON_SET_TOGGLE_SPC	0x01

#define NAND_MINIKEY_PART_SIZE	0x800000
#define NAND_MINIKEY_PART_NUM	4
//#define NAND_MINIKEY_PART_BLOCKNUM	CONFIG_NAND_KEY_BLOCK_NUM
#define NAND_MINIKEY_PART_BLOCKNUM	4
//#define CONFIG_KEYSIZE	(0x4000*1)
#define CONFIG_KEYSIZE	(0x4000*4)
#define ENV_KEY_MAGIC	"keyx"

#define NAND_MINI_PART_BLOCKNUM	2

struct aml_nand_read_retry {
	u8 flag;
	u8 reg_cnt;
	u8 retry_cnt;
	u8 default_flag;
	u8 cur_cnt[MAX_CHIP_NUM];
	u8 reg_addr[READ_RETRY_REG_NUM];
	u8 reg_default_value[MAX_CHIP_NUM][READ_RETRY_REG_NUM];
	char reg_offset_value[MAX_CHIP_NUM][READ_RETRY_CNT][READ_RETRY_REG_NUM];
	void (*get_default_value)(struct mtd_info *mtd);
	void (*set_default_value)(struct mtd_info *mtd);
	void (*save_default_value)(struct mtd_info *mtd);
	void (*read_retry_handle)(struct mtd_info *mtd, int chipnr);
	void (*read_retry_exit)(struct mtd_info *mtd, int chipnr);
};

struct aml_nand_slc_program {
	u8 flag;
	u8 reg_cnt;
	u8 reg_addr[ENHANCE_SLC_REG_NUM];
	u8 reg_default_value[MAX_CHIP_NUM][ENHANCE_SLC_REG_NUM];
	char reg_offset_value[ENHANCE_SLC_REG_NUM];
	void (*get_default_value)(struct mtd_info *mtd);
	void (*exit_enslc_mode)(struct mtd_info *mtd);
	void (*enter_enslc_mode)(struct mtd_info *mtd);
};

/* this for sandisk dynamic read */
struct aml_nand_dynamic_read {
	u8 slc_flag;
	u8 dynamic_read_flag;
	u8 read_case_num_max_lower_page;
	u8 read_case_num_max_upper_page;
	u8 cur_case_num_lower_page[MAX_CHIP_NUM];
	u8 cur_case_num_upper_page[MAX_CHIP_NUM];
	u8 reg_addr_init[DYNAMIC_REG_INIT_NUM];
	u8 reg_addr_lower_page[DYNAMIC_REG_NUM];
	u8 reg_addr_upper_page[DYNAMIC_REG_NUM];
	char reg_offset_value_lower_page[DYNAMIC_CNT_LOWER][DYNAMIC_REG_NUM];
	char reg_offset_value_upper_page[DYNAMIC_CNT_UPPER][DYNAMIC_REG_NUM];
	void (*dynamic_read_init)(struct mtd_info *mtd);
	void (*dynamic_read_handle)(struct mtd_info *mtd, int page, int chipnr);
	void (*dynamic_read_exit)(struct mtd_info *mtd, int chipnr);
	void (*exit_slc_mode)(struct mtd_info *mtd);
	void (*enter_slc_mode)(struct mtd_info *mtd);
};

struct new_tech_nand_t {
	u8 type;
	struct aml_nand_slc_program slc_program_info;
	struct aml_nand_read_retry read_rety_info;
	struct aml_nand_dynamic_read dynamic_read_info;
};
#endif

struct aml_nand_chip {
	struct mtd_info mtd;
	struct nand_chip chip;
	struct hw_controller *controller;

	/* mtd info */
	u8 mfr_type;
	unsigned onfi_mode;
	unsigned T_REA;
	unsigned T_RHOH;
	unsigned options;
	unsigned page_size;
	unsigned block_size;
	unsigned oob_size;
	unsigned virtual_page_size;
	unsigned virtual_block_size;
	u8 plane_num;
	u8 internal_chipnr;
	unsigned internal_page_nums;

	unsigned internal_chip_shift;
	unsigned int ran_mode;
	unsigned int rbpin_mode;
	unsigned int rbpin_detect;
	unsigned int short_pgsz;
	/* bch for infopage on short mode */
	unsigned int bch_info;

	unsigned bch_mode;
	u8 user_byte_mode;
	u8 ops_mode;
	u8 cached_prog_status;
	u8 max_bch_mode;
	unsigned valid_chip[MAX_CHIP_NUM];
	unsigned page_addr;
	unsigned char *aml_nand_data_buf;
	unsigned int *user_info_buf;
	int8_t *block_status;
	unsigned int toggle_mode;
	u8 ecc_cnt_limit;
	u8 ecc_cnt_cur;
	u8 ecc_max;
	unsigned zero_cnt;
	unsigned oob_fill_cnt;
	unsigned boot_oob_fill_cnt;
	/*add property field for key private data*/
	int dtbsize;
	int keysize;
	uint32_t boot_copy_num; /*tell how many bootloader copies*/

	u8 key_protect;
	unsigned char *rsv_data_buf;
	unsigned long long freeNodeBitmask;
	struct free_node_t *free_node[RESERVED_BLOCK_NUM];

	unsigned int vernier;
	struct aml_nand_bbt_info *nand_bbt_info;
	struct aml_nandrsv_info_t *aml_nandbbt_info;
	struct aml_nandrsv_info_t *aml_nandenv_info;
	struct aml_nandrsv_info_t *aml_nandkey_info;
	struct aml_nandrsv_info_t *aml_nanddtb_info;
	struct aml_nandrsv_info_t *aml_nandddr_info;
	struct aml_nand_bch_desc *bch_desc;
#ifdef NEW_NAND_SUPPORT
	struct new_tech_nand_t  new_nand_info;
#endif
	/* platform info */
	struct aml_nand_platform *platform;

	/* device info */
	struct device *device;

	unsigned max_ecc;
	struct ecc_desc_s * ecc;
	// unsigned onfi_mode;
	unsigned err_sts;
	/* plateform operation function*/
	void (*aml_nand_hw_init)(struct aml_nand_chip *aml_chip);
	void (*aml_nand_adjust_timing)(struct aml_nand_chip *aml_chip);
	int (*aml_nand_options_confirm)(struct aml_nand_chip *aml_chip);
	void (*aml_nand_cmd_ctrl)(struct aml_nand_chip *aml_chip,
		int cmd,  unsigned int ctrl);
	void (*aml_nand_select_chip)(struct aml_nand_chip *aml_chip,
		int chipnr);
	void (*aml_nand_write_byte)(struct aml_nand_chip *aml_chip,
		uint8_t data);
	void (*aml_nand_get_user_byte)(struct aml_nand_chip *aml_chip,
		unsigned char *oob_buf, int byte_num);
	void (*aml_nand_set_user_byte)(struct aml_nand_chip *aml_chip,
		unsigned char *oob_buf, int byte_num);
	void (*aml_nand_command)(struct aml_nand_chip *aml_chip,
		unsigned command, int column, int page_addr, int chipnr);
	int (*aml_nand_wait_devready)(struct aml_nand_chip *aml_chip,
		int chipnr);
	int (*aml_nand_dma_read)(struct aml_nand_chip *aml_chip,
		unsigned char *buf, int len, unsigned bch_mode);
	int (*aml_nand_dma_write)(struct aml_nand_chip *aml_chip,
		unsigned char *buf, int len, unsigned bch_mode);
	int (*aml_nand_hwecc_correct)(struct aml_nand_chip *aml_chip,
		unsigned char *buf, unsigned size, unsigned char *oob_buf);
	int (*aml_nand_block_bad_scrub)(struct mtd_info *mtd);
};

struct aml_nand_platform {
	struct aml_nand_flash_dev *nand_flash_dev;
	char *name;
	unsigned chip_enable_pad;
	unsigned ready_busy_pad;

	/* DMA RD/WR delay loop  timing */
	unsigned int T_REA;	/* for dma  wating delay */
	/* not equal of (nandchip->delay, which is for dev ready func)*/
	unsigned int T_RHOH;
	unsigned int ran_mode; 	/*def close, for all part*/
	unsigned int rbpin_mode;	/*may get from romboot*/
	unsigned int rbpin_detect;
	unsigned int short_pgsz;	/*zero means no short*/

	struct aml_nand_chip *aml_chip;
	struct platform_nand_data platform_nand_data;
};

struct aml_nand_device {
	struct aml_nand_platform *aml_nand_platform;
	u8 dev_num;
};

static inline struct aml_nand_chip *mtd_to_nand_chip(struct mtd_info *mtd)
{
	struct nand_chip *chip = mtd->priv;
	return container_of(chip, struct aml_nand_chip, chip);
}

#ifdef CONFIG_PARAMETER_PAGE
struct parameter_page {
	/*0~31 byte: Revision information and features block*/
	unsigned char signature[4];
	unsigned short ver;
	unsigned short feature;
	unsigned short opt_commd;
	unsigned short reserve0;
	unsigned short ex_para_page_len;
	unsigned char num_para_page;
	unsigned char reserve1[17];
	/*32~79 byte: Manufacturer information block*/
	unsigned char dev_manu[12];
	unsigned char dev_model[20];
	unsigned char JEDEC_manu_ID;
	unsigned short date_code;
	unsigned char reserve2[13];
	/*80~127 byte: Memory organization block*/
	unsigned int data_bytes_perpage;
	unsigned short spare_bytes_perpage;
	unsigned int data_bytes_perpartial;
	unsigned short spare_bytes_perpartial;
	unsigned int pages_perblk;
	unsigned int blks_perLUN;
	unsigned char num_LUN;
	/* 4-7: column addr cycles; 0-3: row addr cycles*/
	unsigned char num_addr_cycle;
	unsigned char bits_percell;
	unsigned short max_badblk_perLUN;
	unsigned short blk_edurce;
	/*Guaranteed valid blocks at beginning of target*/
	unsigned char g_v_blk_begin;
	unsigned short blk_edurce_g_v_blk;
	unsigned char progm_perpage;
	unsigned char prt_prog_att;//obsolete
	unsigned char bits_ECC_corretable;
	/*0-3: number of interleaved address bits*/
	unsigned char bits_intleav_addr;
	/*6-7 Reserved (0)
	5 1 = lower bit XNOR block address restriction
	4 1 = read cache supported
	3 Address restrictions for cache operations
	2 1 = program cache supported
	1 1 = no block address restrictions
	0 Overlapped / concurrent interleaving support
	*/
	unsigned char intleav_op_attr;
	unsigned char reserve3[13];
	/*128~163 byte: Electrical parameters block*/
	unsigned char max_io_pin;
	/*6-15 Reserved (0)
	5 1 = supports timing mode 5
	4 1 = supports timing mode 4
	3 1 = supports timing mode 3
	2 1 = supports timing mode 2
	1 1 = supports timing mode 1
	0 1 = supports timing mode 0, shall be 1
	*/
	unsigned short asy_time_mode;
	unsigned short asy_prog_cach_time_mode;	/*obsolete*/
	unsigned short Tprog;	/*Maximum page program time (Ts)*/
	unsigned short Tbers;	/*Maximum block erase time (Ts)*/
	unsigned short Tr;	/*Maximum page read time (Ts)*/
	unsigned short Tccs;	/*Minimum change column setup time (ns)*/
	/* 6-15 Reserved (0)
	5 1 = supports timing mode 5
	4 1 = supports timing mode 4
	3 1 = supports timing mode 3
	2 1 = supports timing mode 2
	1 1 = supports timing mode 1
	0 1 = supports timing mode 0
	*/
	unsigned short src_syn_time_mode;
	/*3-7 Reserved (0)
	2 1 = device supports CLK stopped for data input
	1 1 = typical capacitance values present
	0 tCAD value to use
	*/
	unsigned char src_syn_feature;
	unsigned short CLK_input_pin;
	unsigned short IO_pin;
	unsigned short input_pin;
	unsigned char max_input_pin;
	unsigned char dr_strgth;
	/*Maximum interleaved page read time (Ts)*/
	unsigned short Tir;
	/*Program page register clear enhancement tADL value (ns)*/
	unsigned short Tadl;
	unsigned char reserve4[8];
	/*164~255 byte: Vendor block*/
	unsigned short vd_ver;
	unsigned char vd_spec[88];
	unsigned short int_CRC;
	/*256~ byte: Redundant Parameter Pages*/

}__attribute__ ((__packed__));
#endif


int aml_nand_init(struct aml_nand_chip *aml_chip);

int aml_nand_read_page_raw(struct mtd_info *mtd,
	struct nand_chip *chip, uint8_t *buf, int oob_required, int page);

int aml_nand_write_page_raw(struct mtd_info *mtd,
	struct nand_chip *chip, const uint8_t *buf, int oob_required);

int aml_nand_read_page_hwecc(struct mtd_info *mtd,
	struct nand_chip *chip, uint8_t *buf, int oob_required, int page);

int aml_nand_write_page_hwecc(struct mtd_info *mtd,
	struct nand_chip *chip, const uint8_t *buf, int oob_required);

int aml_nand_read_oob(struct mtd_info *mtd,
	struct nand_chip *chip, int page);

int aml_nand_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page);

int aml_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip);

int aml_nand_block_markbad(struct mtd_info *mtd, loff_t ofs);

void aml_nand_dma_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);

void aml_nand_dma_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);

void aml_platform_cmd_ctrl(struct aml_nand_chip *aml_chip,
	int cmd, unsigned int ctrl);

void aml_platform_write_byte(struct aml_nand_chip *aml_chip, uint8_t data);

int aml_platform_wait_devready(struct aml_nand_chip *aml_chip, int chipnr);

void aml_platform_get_user_byte(struct aml_nand_chip *aml_chip,
	unsigned char *oob_buf, int byte_num);

void aml_platform_set_user_byte(struct aml_nand_chip *aml_chip,
	unsigned char *oob_buf, int byte_num);

void aml_nand_base_command(struct aml_nand_chip *aml_chip,
	unsigned command, int column, int page_addr, int chipnr);

int aml_nand_block_bad_scrub_update_bbt(struct mtd_info *mtd);

int aml_ubootenv_init(struct aml_nand_chip *aml_chip);

int amlnf_dtb_init(struct aml_nand_chip *aml_chip);

int aml_key_init(struct aml_nand_chip *aml_chip);

int aml_nand_bbt_check(struct mtd_info *mtd);

int aml_nand_rsv_info_check_except_bbt(struct mtd_info *mtd);

int aml_nand_rsv_erase_protect(struct mtd_info *mtd, unsigned int block_addr);

int aml_nand_rsv_info_init(struct mtd_info *mtd);

int aml_nand_scan_rsv_info(struct mtd_info *mtd,
	struct aml_nandrsv_info_t *nandrsv_info);

int aml_nand_ext_erase_rsv_info(struct mtd_info *mtd,
				struct aml_nandrsv_info_t *info);

int aml_nand_ext_read_rsv_info(struct mtd_info *mtd,
			       struct aml_nandrsv_info_t *info,
			       size_t offset, u_char *buf);

int aml_nand_ext_save_rsv_info(struct mtd_info *mtd,
			       struct aml_nandrsv_info_t *info,
			       u_char *buf);

int aml_nand_scan_bbt(struct mtd_info *mtd);

int aml_nand_scan(struct mtd_info *mtd, int maxchips);

int aml_nand_write_page_raw(struct mtd_info *mtd,
	struct nand_chip *chip, const uint8_t *buf, int oob_required);

int aml_nand_write_page(struct mtd_info *mtd,
	struct nand_chip *chip, uint32_t offset,
	int data_len,
	const uint8_t *buf,
	int oob_required, int page, int cached, int raw);

void aml_nand_base_command(struct aml_nand_chip *aml_chip,
	unsigned command, int column, int page_addr, int chipnr);

void aml_nand_command(struct mtd_info *mtd,
	unsigned command, int column, int page_addr);

int aml_nand_wait(struct mtd_info *mtd, struct nand_chip *chip);

void aml_nand_erase_cmd(struct mtd_info *mtd, int page);

void m3_nand_boot_erase_cmd(struct mtd_info *mtd, int page);

int m3_nand_boot_read_page_hwecc(struct mtd_info *mtd,
	struct nand_chip *chip, uint8_t *buf, int oob_required, int page);

int m3_nand_boot_write_page_hwecc(struct mtd_info *mtd,
	struct nand_chip *chip, const uint8_t *buf, int oob_required);

int m3_nand_boot_write_page(struct mtd_info *mtd, struct nand_chip *chip,
	uint32_t offset, int data_len, const uint8_t *buf,
	int oob_required, int page, int cached, int raw);

int aml_nand_get_fbb_issue(void);

void aml_nand_check_fbb_issue(u8 *dev_id);

#endif