include/mtd/cfi_flash.h

   1 /*
   2  * (C) Copyright 2009
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __CFI_FLASH_H__
   9 #define __CFI_FLASH_H__
  10
  11 #define FLASH_CMD_CFI                   0x98
  12 #define FLASH_CMD_READ_ID               0x90
  13 #define FLASH_CMD_RESET                 0xff
  14 #define FLASH_CMD_BLOCK_ERASE           0x20
  15 #define FLASH_CMD_ERASE_CONFIRM         0xD0
  16 #define FLASH_CMD_WRITE                 0x40
  17 #define FLASH_CMD_PROTECT               0x60
  18 #define FLASH_CMD_SETUP                 0x60
  19 #define FLASH_CMD_SET_CR_CONFIRM        0x03
  20 #define FLASH_CMD_PROTECT_SET           0x01
  21 #define FLASH_CMD_PROTECT_CLEAR         0xD0
  22 #define FLASH_CMD_CLEAR_STATUS          0x50
  23 #define FLASH_CMD_READ_STATUS           0x70
  24 #define FLASH_CMD_WRITE_TO_BUFFER       0xE8
  25 #define FLASH_CMD_WRITE_BUFFER_PROG     0xE9
  26 #define FLASH_CMD_WRITE_BUFFER_CONFIRM  0xD0
  27
  28 #define FLASH_STATUS_DONE               0x80
  29 #define FLASH_STATUS_ESS                0x40
  30 #define FLASH_STATUS_ECLBS              0x20
  31 #define FLASH_STATUS_PSLBS              0x10
  32 #define FLASH_STATUS_VPENS              0x08
  33 #define FLASH_STATUS_PSS                0x04
  34 #define FLASH_STATUS_DPS                0x02
  35 #define FLASH_STATUS_R                  0x01
  36 #define FLASH_STATUS_PROTECT            0x01
  37
  38 #define AMD_CMD_RESET                   0xF0
  39 #define AMD_CMD_WRITE                   0xA0
  40 #define AMD_CMD_ERASE_START             0x80
  41 #define AMD_CMD_ERASE_SECTOR            0x30
  42 #define AMD_CMD_UNLOCK_START            0xAA
  43 #define AMD_CMD_UNLOCK_ACK              0x55
  44 #define AMD_CMD_WRITE_TO_BUFFER         0x25
  45 #define AMD_CMD_WRITE_BUFFER_CONFIRM    0x29
  46 #define AMD_CMD_SET_PPB_ENTRY           0xC0
  47 #define AMD_CMD_SET_PPB_EXIT_BC1        0x90
  48 #define AMD_CMD_SET_PPB_EXIT_BC2        0x00
  49 #define AMD_CMD_PPB_UNLOCK_BC1          0x80
  50 #define AMD_CMD_PPB_UNLOCK_BC2          0x30
  51 #define AMD_CMD_PPB_LOCK_BC1            0xA0
  52 #define AMD_CMD_PPB_LOCK_BC2            0x00
  53
  54 #define AMD_STATUS_TOGGLE               0x40
  55 #define AMD_STATUS_ERROR                0x20
  56
  57 #define ATM_CMD_UNLOCK_SECT             0x70
  58 #define ATM_CMD_SOFTLOCK_START          0x80
  59 #define ATM_CMD_LOCK_SECT               0x40
  60
  61 #define FLASH_CONTINUATION_CODE         0x7F
  62
  63 #define FLASH_OFFSET_MANUFACTURER_ID    0x00
  64 #define FLASH_OFFSET_DEVICE_ID          0x01
  65 #define FLASH_OFFSET_DEVICE_ID2         0x0E
  66 #define FLASH_OFFSET_DEVICE_ID3         0x0F
  67 #define FLASH_OFFSET_CFI                0x55
  68 #define FLASH_OFFSET_CFI_ALT            0x555
  69 #define FLASH_OFFSET_CFI_RESP           0x10
  70 #define FLASH_OFFSET_PRIMARY_VENDOR     0x13
  71 /* extended query table primary address */
  72 #define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
  73 #define FLASH_OFFSET_WTOUT              0x1F
  74 #define FLASH_OFFSET_WBTOUT             0x20
  75 #define FLASH_OFFSET_ETOUT              0x21
  76 #define FLASH_OFFSET_CETOUT             0x22
  77 #define FLASH_OFFSET_WMAX_TOUT          0x23
  78 #define FLASH_OFFSET_WBMAX_TOUT         0x24
  79 #define FLASH_OFFSET_EMAX_TOUT          0x25
  80 #define FLASH_OFFSET_CEMAX_TOUT         0x26
  81 #define FLASH_OFFSET_SIZE               0x27
  82 #define FLASH_OFFSET_INTERFACE          0x28
  83 #define FLASH_OFFSET_BUFFER_SIZE        0x2A
  84 #define FLASH_OFFSET_NUM_ERASE_REGIONS  0x2C
  85 #define FLASH_OFFSET_ERASE_REGIONS      0x2D
  86 #define FLASH_OFFSET_PROTECT            0x02
  87 #define FLASH_OFFSET_USER_PROTECTION    0x85
  88 #define FLASH_OFFSET_INTEL_PROTECTION   0x81
  89
  90 #define CFI_CMDSET_NONE                 0
  91 #define CFI_CMDSET_INTEL_EXTENDED       1
  92 #define CFI_CMDSET_AMD_STANDARD         2
  93 #define CFI_CMDSET_INTEL_STANDARD       3
  94 #define CFI_CMDSET_AMD_EXTENDED         4
  95 #define CFI_CMDSET_MITSU_STANDARD       256
  96 #define CFI_CMDSET_MITSU_EXTENDED       257
  97 #define CFI_CMDSET_SST                  258
  98 #define CFI_CMDSET_INTEL_PROG_REGIONS   512
  99
 100 #ifdef CONFIG_SYS_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */
 101 # undef  FLASH_CMD_RESET
 102 # define FLASH_CMD_RESET        AMD_CMD_RESET /* use AMD-Reset instead */
 103 #endif
 104
 105 #define NUM_ERASE_REGIONS       4 /* max. number of erase regions */
 106
 107 typedef union {
 108         u8 w8;
 109         u16 w16;
 110         u32 w32;
 111         u64 w64;
 112 } cfiword_t;
 113
 114 /* CFI standard query structure */
 115 /* The offsets and sizes of this packed structure members correspond
 116  * to the actual layout in CFI Flash chips. Some 16- and 32-bit members
 117  * are unaligned and must be accessed with explicit unaligned access macros.
 118  */
 119 struct cfi_qry {
 120         u8      qry[3];
 121         u16     p_id;                   /* unaligned */
 122         u16     p_adr;                  /* unaligned */
 123         u16     a_id;                   /* unaligned */
 124         u16     a_adr;                  /* unaligned */
 125         u8      vcc_min;
 126         u8      vcc_max;
 127         u8      vpp_min;
 128         u8      vpp_max;
 129         u8      word_write_timeout_typ;
 130         u8      buf_write_timeout_typ;
 131         u8      block_erase_timeout_typ;
 132         u8      chip_erase_timeout_typ;
 133         u8      word_write_timeout_max;
 134         u8      buf_write_timeout_max;
 135         u8      block_erase_timeout_max;
 136         u8      chip_erase_timeout_max;
 137         u8      dev_size;
 138         u16     interface_desc;         /* aligned */
 139         u16     max_buf_write_size;     /* aligned */
 140         u8      num_erase_regions;
 141         u32     erase_region_info[NUM_ERASE_REGIONS];   /* unaligned */
 142 } __attribute__((packed));
 143
 144 struct cfi_pri_hdr {
 145         u8      pri[3];
 146         u8      major_version;
 147         u8      minor_version;
 148 } __attribute__((packed));
 149
 150 #ifndef CONFIG_SYS_FLASH_BANKS_LIST
 151 #define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
 152 #endif
 153
 154 /*
 155  * CFI_MAX_FLASH_BANKS only used for flash_info struct declaration.
 156  *
 157  * Use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined
 158  */
 159 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
 160 #define CONFIG_SYS_MAX_FLASH_BANKS      (cfi_flash_num_flash_banks)
 161 #define CFI_MAX_FLASH_BANKS     CONFIG_SYS_MAX_FLASH_BANKS_DETECT
 162 /* board code can update this variable before CFI detection */
 163 extern int cfi_flash_num_flash_banks;
 164 #else
 165 #define CFI_MAX_FLASH_BANKS     CONFIG_SYS_MAX_FLASH_BANKS
 166 #endif
 167
 168 void flash_write_cmd(flash_info_t * info, flash_sect_t sect,
 169                      uint offset, u32 cmd);
 170 phys_addr_t cfi_flash_bank_addr(int i);
 171 unsigned long cfi_flash_bank_size(int i);
 172 void flash_cmd_reset(flash_info_t *info);
 173
 174 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
 175 void flash_write8(u8 value, void *addr);
 176 void flash_write16(u16 value, void *addr);
 177 void flash_write32(u32 value, void *addr);
 178 void flash_write64(u64 value, void *addr);
 179 u8 flash_read8(void *addr);
 180 u16 flash_read16(void *addr);
 181 u32 flash_read32(void *addr);
 182 u64 flash_read64(void *addr);
 183 #endif
 184
 185 #endif /* __CFI_FLASH_H__ */