include/linux/mtd/jedec.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
   4  *                       Steven J. Hill <sjhill@realitydiluted.com>
   5  *                       Thomas Gleixner <tglx@linutronix.de>
   6  *
   7  * Contains all JEDEC related definitions
   8  */
   9
  10 #ifndef __LINUX_MTD_JEDEC_H
  11 #define __LINUX_MTD_JEDEC_H
  12
  13 struct jedec_ecc_info {
  14         u8 ecc_bits;
  15         u8 codeword_size;
  16         __le16 bb_per_lun;
  17         __le16 block_endurance;
  18         u8 reserved[2];
  19 } __packed;
  20
  21 /* JEDEC features */
  22 #define JEDEC_FEATURE_16_BIT_BUS        (1 << 0)
  23
  24 /* JEDEC Optional Commands */
  25 #define JEDEC_OPT_CMD_READ_CACHE        BIT(1)
  26
  27 struct nand_jedec_params {
  28         /* rev info and features block */
  29         /* 'J' 'E' 'S' 'D'  */
  30         u8 sig[4];
  31         __le16 revision;
  32         __le16 features;
  33         u8 opt_cmd[3];
  34         __le16 sec_cmd;
  35         u8 num_of_param_pages;
  36         u8 reserved0[18];
  37
  38         /* manufacturer information block */
  39         char manufacturer[12];
  40         char model[20];
  41         u8 jedec_id[6];
  42         u8 reserved1[10];
  43
  44         /* memory organization block */
  45         __le32 byte_per_page;
  46         __le16 spare_bytes_per_page;
  47         u8 reserved2[6];
  48         __le32 pages_per_block;
  49         __le32 blocks_per_lun;
  50         u8 lun_count;
  51         u8 addr_cycles;
  52         u8 bits_per_cell;
  53         u8 programs_per_page;
  54         u8 multi_plane_addr;
  55         u8 multi_plane_op_attr;
  56         u8 reserved3[38];
  57
  58         /* electrical parameter block */
  59         __le16 async_sdr_speed_grade;
  60         __le16 toggle_ddr_speed_grade;
  61         __le16 sync_ddr_speed_grade;
  62         u8 async_sdr_features;
  63         u8 toggle_ddr_features;
  64         u8 sync_ddr_features;
  65         __le16 t_prog;
  66         __le16 t_bers;
  67         __le16 t_r;
  68         __le16 t_r_multi_plane;
  69         __le16 t_ccs;
  70         __le16 io_pin_capacitance_typ;
  71         __le16 input_pin_capacitance_typ;
  72         __le16 clk_pin_capacitance_typ;
  73         u8 driver_strength_support;
  74         __le16 t_adl;
  75         u8 reserved4[36];
  76
  77         /* ECC and endurance block */
  78         u8 guaranteed_good_blocks;
  79         __le16 guaranteed_block_endurance;
  80         struct jedec_ecc_info ecc_info[4];
  81         u8 reserved5[29];
  82
  83         /* reserved */
  84         u8 reserved6[148];
  85
  86         /* vendor */
  87         __le16 vendor_rev_num;
  88         u8 reserved7[88];
  89
  90         /* CRC for Parameter Page */
  91         __le16 crc;
  92 } __packed;
  93
  94 #endif /* __LINUX_MTD_JEDEC_H */