Logo Search packages:      
Sourcecode: linux version File versions  Download package

jedec_probe.c

/*
   Common Flash Interface probe code.
   (C) 2000 Red Hat. GPL'd.
   $Id: jedec_probe.c,v 1.66 2005/11/07 11:14:23 gleixner Exp $
   See JEDEC (http://www.jedec.org/) standard JESD21C (section 3.5)
   for the standard this probe goes back to.

   Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/cfi.h>
#include <linux/mtd/gen_probe.h>

/* Manufacturers */
#define MANUFACTURER_AMD      0x0001
#define MANUFACTURER_ATMEL    0x001f
#define MANUFACTURER_FUJITSU  0x0004
#define MANUFACTURER_HYUNDAI  0x00AD
#define MANUFACTURER_INTEL    0x0089
#define MANUFACTURER_MACRONIX 0x00C2
#define MANUFACTURER_NEC      0x0010
#define MANUFACTURER_PMC      0x009D
#define MANUFACTURER_SHARP    0x00b0
#define MANUFACTURER_SST      0x00BF
#define MANUFACTURER_ST       0x0020
#define MANUFACTURER_TOSHIBA  0x0098
#define MANUFACTURER_WINBOND  0x00da


/* AMD */
#define AM29DL800BB     0x22C8
#define AM29DL800BT     0x224A

#define AM29F800BB      0x2258
#define AM29F800BT      0x22D6
#define AM29LV400BB     0x22BA
#define AM29LV400BT     0x22B9
#define AM29LV800BB     0x225B
#define AM29LV800BT     0x22DA
#define AM29LV160DT     0x22C4
#define AM29LV160DB     0x2249
#define AM29F017D 0x003D
#define AM29F016D 0x00AD
#define AM29F080  0x00D5
#define AM29F040  0x00A4
#define AM29LV040B      0x004F
#define AM29F032B 0x0041
#define AM29F002T 0x00B0

/* Atmel */
#define AT49BV512 0x0003
#define AT29LV512 0x003d
#define AT49BV16X 0x00C0
#define AT49BV16XT      0x00C2
#define AT49BV32X 0x00C8
#define AT49BV32XT      0x00C9

/* Fujitsu */
#define MBM29F040C      0x00A4
#define MBM29F800BA     0x2258
#define MBM29LV650UE    0x22D7
#define MBM29LV320TE    0x22F6
#define MBM29LV320BE    0x22F9
#define MBM29LV160TE    0x22C4
#define MBM29LV160BE    0x2249
#define MBM29LV800BA    0x225B
#define MBM29LV800TA    0x22DA
#define MBM29LV400TC    0x22B9
#define MBM29LV400BC    0x22BA

/* Hyundai */
#define HY29F002T 0x00B0

/* Intel */
#define I28F004B3T      0x00d4
#define I28F004B3B      0x00d5
#define I28F400B3T      0x8894
#define I28F400B3B      0x8895
#define I28F008S5 0x00a6
#define I28F016S5 0x00a0
#define I28F008SA 0x00a2
#define I28F008B3T      0x00d2
#define I28F008B3B      0x00d3
#define I28F800B3T      0x8892
#define I28F800B3B      0x8893
#define I28F016S3 0x00aa
#define I28F016B3T      0x00d0
#define I28F016B3B      0x00d1
#define I28F160B3T      0x8890
#define I28F160B3B      0x8891
#define I28F320B3T      0x8896
#define I28F320B3B      0x8897
#define I28F640B3T      0x8898
#define I28F640B3B      0x8899
#define I82802AB  0x00ad
#define I82802AC  0x00ac

/* Macronix */
#define MX29LV040C      0x004F
#define MX29LV160T      0x22C4
#define MX29LV160B      0x2249
#define MX29F040  0x00A4
#define MX29F016  0x00AD
#define MX29F002T 0x00B0
#define MX29F004T 0x0045
#define MX29F004B 0x0046

/* NEC */
#define UPD29F064115    0x221C

/* PMC */
#define PM49FL002 0x006D
#define PM49FL004 0x006E
#define PM49FL008 0x006A

/* Sharp */
#define LH28F640BF      0x00b0

/* ST - www.st.com */
#define M29F800AB 0x0058
#define M29W800DT 0x00D7
#define M29W800DB 0x005B
#define M29W160DT 0x22C4
#define M29W160DB 0x2249
#define M29W040B  0x00E3
#define M50FW040  0x002C
#define M50FW080  0x002D
#define M50FW016  0x002E
#define M50LPW080       0x002F

/* SST */
#define SST29EE020      0x0010
#define SST29LE020      0x0012
#define SST29EE512      0x005d
#define SST29LE512      0x003d
#define SST39LF800      0x2781
#define SST39LF160      0x2782
#define SST39VF1601     0x234b
#define SST39LF512      0x00D4
#define SST39LF010      0x00D5
#define SST39LF020      0x00D6
#define SST39LF040      0x00D7
#define SST39SF010A     0x00B5
#define SST39SF020A     0x00B6
#define SST49LF004B     0x0060
#define SST49LF040B     0x0050
#define SST49LF008A     0x005a
#define SST49LF030A     0x001C
#define SST49LF040A     0x0051
#define SST49LF080A     0x005B

/* Toshiba */
#define TC58FVT160      0x00C2
#define TC58FVB160      0x0043
#define TC58FVT321      0x009A
#define TC58FVB321      0x009C
#define TC58FVT641      0x0093
#define TC58FVB641      0x0095

/* Winbond */
#define W49V002A  0x00b0


/*
 * Unlock address sets for AMD command sets.
 * Intel command sets use the MTD_UADDR_UNNECESSARY.
 * Each identifier, except MTD_UADDR_UNNECESSARY, and
 * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
 * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
 * initialization need not require initializing all of the
 * unlock addresses for all bit widths.
 */
enum uaddr {
      MTD_UADDR_NOT_SUPPORTED = 0,  /* data width not supported */
      MTD_UADDR_0x0555_0x02AA,
      MTD_UADDR_0x0555_0x0AAA,
      MTD_UADDR_0x5555_0x2AAA,
      MTD_UADDR_0x0AAA_0x0555,
      MTD_UADDR_DONT_CARE,          /* Requires an arbitrary address */
      MTD_UADDR_UNNECESSARY,        /* Does not require any address */
};


struct unlock_addr {
      u32 addr1;
      u32 addr2;
};


/*
 * I don't like the fact that the first entry in unlock_addrs[]
 * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
 * should not be used.  The  problem is that structures with
 * initializers have extra fields initialized to 0.  It is _very_
 * desireable to have the unlock address entries for unsupported
 * data widths automatically initialized - that means that
 * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
 * must go unused.
 */
static const struct unlock_addr  unlock_addrs[] = {
      [MTD_UADDR_NOT_SUPPORTED] = {
            .addr1 = 0xffff,
            .addr2 = 0xffff
      },

      [MTD_UADDR_0x0555_0x02AA] = {
            .addr1 = 0x0555,
            .addr2 = 0x02aa
      },

      [MTD_UADDR_0x0555_0x0AAA] = {
            .addr1 = 0x0555,
            .addr2 = 0x0aaa
      },

      [MTD_UADDR_0x5555_0x2AAA] = {
            .addr1 = 0x5555,
            .addr2 = 0x2aaa
      },

      [MTD_UADDR_0x0AAA_0x0555] = {
            .addr1 = 0x0AAA,
            .addr2 = 0x0555
      },

      [MTD_UADDR_DONT_CARE] = {
            .addr1 = 0x0000,      /* Doesn't matter which address */
            .addr2 = 0x0000       /* is used - must be last entry */
      },

      [MTD_UADDR_UNNECESSARY] = {
            .addr1 = 0x0000,
            .addr2 = 0x0000
      }
};


struct amd_flash_info {
      const __u16 mfr_id;
      const __u16 dev_id;
      const char *name;
      const int DevSize;
      const int NumEraseRegions;
      const int CmdSet;
      const __u8 uaddr[4];          /* unlock addrs for 8, 16, 32, 64 */
      const ulong regions[6];
};

#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)

#define SIZE_64KiB  16
#define SIZE_128KiB 17
#define SIZE_256KiB 18
#define SIZE_512KiB 19
#define SIZE_1MiB   20
#define SIZE_2MiB   21
#define SIZE_4MiB   22
#define SIZE_8MiB   23


/*
 * Please keep this list ordered by manufacturer!
 * Fortunately, the list isn't searched often and so a
 * slow, linear search isn't so bad.
 */
static const struct amd_flash_info jedec_table[] = {
      {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F032B,
            .name       = "AMD AM29F032B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,64)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV160DT,
            .name       = "AMD AM29LV160DT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA   /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV160DB,
            .name       = "AMD AM29LV160DB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA   /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,31)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV400BB,
            .name       = "AMD AM29LV400BB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,7)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV400BT,
            .name       = "AMD AM29LV400BT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,7),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV800BB,
            .name       = "AMD AM29LV800BB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15),
            }
      }, {
/* add DL */
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29DL800BB,
            .name       = "AMD AM29DL800BB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 6,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,4),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x10000,14)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29DL800BT,
            .name       = "AMD AM29DL800BT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 6,
            .regions    = {
                  ERASEINFO(0x10000,14),
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,4),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F800BB,
            .name       = "AMD AM29F800BB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV800BT,
            .name       = "AMD AM29LV800BT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,15),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F800BT,
            .name       = "AMD AM29F800BT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,15),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F017D,
            .name       = "AMD AM29F017D",
            .uaddr            = {
                  [0] = MTD_UADDR_DONT_CARE     /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,32),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F016D,
            .name       = "AMD AM29F016D",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,32),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F080,
            .name       = "AMD AM29F080",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,16),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F040,
            .name       = "AMD AM29F040",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29LV040B,
            .name       = "AMD AM29LV040B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
      }, {
            .mfr_id           = MANUFACTURER_AMD,
            .dev_id           = AM29F002T,
            .name       = "AMD AM29F002T",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,3),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1),
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT49BV512,
            .name       = "Atmel AT49BV512",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_64KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT29LV512,
            .name       = "Atmel AT29LV512",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_64KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x80,256),
                  ERASEINFO(0x80,256)
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT49BV16X,
            .name       = "Atmel AT49BV16X",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x0AAA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x0AAA   /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000,8),
                  ERASEINFO(0x10000,31)
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT49BV16XT,
            .name       = "Atmel AT49BV16XT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x0AAA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x0AAA   /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x02000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT49BV32X,
            .name       = "Atmel AT49BV32X",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x0AAA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x0AAA   /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000,8),
                  ERASEINFO(0x10000,63)
            }
      }, {
            .mfr_id           = MANUFACTURER_ATMEL,
            .dev_id           = AT49BV32XT,
            .name       = "Atmel AT49BV32XT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x0AAA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x0AAA   /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000,63),
                  ERASEINFO(0x02000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29F040C,
            .name       = "Fujitsu MBM29F040C",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29F800BA,
            .name       = "Fujitsu MBM29F800BA",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15),
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV650UE,
            .name       = "Fujitsu MBM29LV650UE",
            .uaddr            = {
                  [0] = MTD_UADDR_DONT_CARE     /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,128)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV320TE,
            .name       = "Fujitsu MBM29LV320TE",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000,63),
                  ERASEINFO(0x02000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV320BE,
            .name       = "Fujitsu MBM29LV320BE",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000,8),
                  ERASEINFO(0x10000,63)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV160TE,
            .name       = "Fujitsu MBM29LV160TE",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV160BE,
            .name       = "Fujitsu MBM29LV160BE",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,31)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV800BA,
            .name       = "Fujitsu MBM29LV800BA",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV800TA,
            .name       = "Fujitsu MBM29LV800TA",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,15),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV400BC,
            .name       = "Fujitsu MBM29LV400BC",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,7)
            }
      }, {
            .mfr_id           = MANUFACTURER_FUJITSU,
            .dev_id           = MBM29LV400TC,
            .name       = "Fujitsu MBM29LV400TC",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,7),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_HYUNDAI,
            .dev_id           = HY29F002T,
            .name       = "Hyundai HY29F002T",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,3),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F004B3B,
            .name       = "Intel 28F004B3B",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 7),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F004B3T,
            .name       = "Intel 28F004B3T",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 7),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F400B3B,
            .name       = "Intel 28F400B3B",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 7),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F400B3T,
            .name       = "Intel 28F400B3T",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 7),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F008B3B,
            .name       = "Intel 28F008B3B",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 15),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F008B3T,
            .name       = "Intel 28F008B3T",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 15),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F008S5,
            .name       = "Intel 28F008S5",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,16),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F016S5,
            .name       = "Intel 28F016S5",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,32),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F008SA,
            .name       = "Intel 28F008SA",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000, 16),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F800B3B,
            .name       = "Intel 28F800B3B",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 15),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F800B3T,
            .name       = "Intel 28F800B3T",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 15),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F016B3B,
            .name       = "Intel 28F016B3B",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 31),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F016S3,
            .name       = "Intel I28F016S3",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000, 32),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F016B3T,
            .name       = "Intel 28F016B3T",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 31),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F160B3B,
            .name       = "Intel 28F160B3B",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 31),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F160B3T,
            .name       = "Intel 28F160B3T",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 31),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F320B3B,
            .name       = "Intel 28F320B3B",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 63),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F320B3T,
            .name       = "Intel 28F320B3T",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 63),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F640B3B,
            .name       = "Intel 28F640B3B",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000, 8),
                  ERASEINFO(0x10000, 127),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I28F640B3T,
            .name       = "Intel 28F640B3T",
            .uaddr            = {
                  [1] = MTD_UADDR_UNNECESSARY,    /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_INTEL_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000, 127),
                  ERASEINFO(0x02000, 8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I82802AB,
            .name       = "Intel 82802AB",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
      }, {
            .mfr_id           = MANUFACTURER_INTEL,
            .dev_id           = I82802AC,
            .name       = "Intel 82802AC",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,16),
            }
      }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29LV040C,
            .name       = "Macronix MX29LV040C",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA,  /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
      }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29LV160T,
            .name       = "MXIC MX29LV160T",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_NEC,
            .dev_id           = UPD29F064115,
            .name       = "NEC uPD29F064115",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 3,
            .regions    = {
                  ERASEINFO(0x2000,8),
                  ERASEINFO(0x10000,126),
                  ERASEINFO(0x2000,8),
            }
      }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29LV160B,
            .name       = "MXIC MX29LV160B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,31)
            }
      }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29F040,
            .name       = "Macronix MX29F040",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
        }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29F016,
            .name       = "Macronix MX29F016",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,32),
            }
        }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29F004T,
            .name       = "Macronix MX29F004T",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,7),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1),
            }
        }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29F004B,
            .name       = "Macronix MX29F004B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,7),
            }
      }, {
            .mfr_id           = MANUFACTURER_MACRONIX,
            .dev_id           = MX29F002T,
            .name       = "Macronix MX29F002T",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,3),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1),
            }
      }, {
            .mfr_id           = MANUFACTURER_PMC,
            .dev_id           = PM49FL002,
            .name       = "PMC Pm49FL002",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO( 0x01000, 64 )
            }
      }, {
            .mfr_id           = MANUFACTURER_PMC,
            .dev_id           = PM49FL004,
            .name       = "PMC Pm49FL004",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO( 0x01000, 128 )
            }
      }, {
            .mfr_id           = MANUFACTURER_PMC,
            .dev_id           = PM49FL008,
            .name       = "PMC Pm49FL008",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO( 0x01000, 256 )
            }
      }, {
            .mfr_id           = MANUFACTURER_SHARP,
            .dev_id           = LH28F640BF,
            .name       = "LH28F640BF",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet         = P_ID_INTEL_STD,
            .NumEraseRegions= 1,
            .regions        = {
                  ERASEINFO(0x40000,16),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39LF512,
            .name       = "SST 39LF512",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_64KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,16),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39LF010,
            .name       = "SST 39LF010",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_128KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,32),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id     = SST29EE020,
            .name       = "SST 29EE020",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_SST_PAGE,
            .NumEraseRegions= 1,
            .regions = {ERASEINFO(0x01000,64),
            }
         }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST29LE020,
            .name       = "SST 29LE020",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_SST_PAGE,
            .NumEraseRegions= 1,
            .regions = {ERASEINFO(0x01000,64),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39LF020,
            .name       = "SST 39LF020",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,64),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39LF040,
            .name       = "SST 39LF040",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,128),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39SF010A,
            .name       = "SST 39SF010A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_128KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,32),
            }
        }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST39SF020A,
            .name       = "SST 39SF020A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,64),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id         = SST49LF040B,
            .name           = "SST 49LF040B",
            .uaddr          = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize        = SIZE_512KiB,
            .CmdSet         = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions        = {
                  ERASEINFO(0x01000,128),
            }
      }, {

            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST49LF004B,
            .name       = "SST 49LF004B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,128),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST49LF008A,
            .name       = "SST 49LF008A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,256),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST49LF030A,
            .name       = "SST 49LF030A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,96),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST49LF040A,
            .name       = "SST 49LF040A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,128),
            }
      }, {
            .mfr_id           = MANUFACTURER_SST,
            .dev_id           = SST49LF080A,
            .name       = "SST 49LF080A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x01000,256),
            }
      }, {
               .mfr_id         = MANUFACTURER_SST,     /* should be CFI */
               .dev_id         = SST39LF160,
               .name           = "SST 39LF160",
               .uaddr          = {
                       [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
                       [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
               },
               .DevSize        = SIZE_2MiB,
               .CmdSet         = P_ID_AMD_STD,
               .NumEraseRegions= 2,
               .regions        = {
                       ERASEINFO(0x1000,256),
                       ERASEINFO(0x1000,256)
               }
      }, {
               .mfr_id         = MANUFACTURER_SST,     /* should be CFI */
               .dev_id         = SST39VF1601,
               .name           = "SST 39VF1601",
               .uaddr          = {
                       [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
                       [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
               },
               .DevSize        = SIZE_2MiB,
               .CmdSet         = P_ID_AMD_STD,
               .NumEraseRegions= 2,
               .regions        = {
                       ERASEINFO(0x1000,256),
                       ERASEINFO(0x1000,256)
               }

      }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M29F800AB,
            .name       = "ST M29F800AB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15),
            }
       }, {
            .mfr_id           = MANUFACTURER_ST,      /* FIXME - CFI device? */
            .dev_id           = M29W800DT,
            .name       = "ST M29W800DT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
                  [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,15),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_ST,      /* FIXME - CFI device? */
            .dev_id           = M29W800DB,
            .name       = "ST M29W800DB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
                  [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,15)
            }
      }, {
            .mfr_id           = MANUFACTURER_ST,      /* FIXME - CFI device? */
            .dev_id           = M29W160DT,
            .name       = "ST M29W160DT",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_ST,      /* FIXME - CFI device? */
            .dev_id           = M29W160DB,
            .name       = "ST M29W160DB",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA,  /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA,  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,31)
            }
        }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M29W040B,
            .name       = "ST M29W040B",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
        }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M50FW040,
            .name       = "ST M50FW040",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_512KiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,8),
            }
        }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M50FW080,
            .name       = "ST M50FW080",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,16),
            }
        }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M50FW016,
            .name       = "ST M50FW016",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,32),
            }
      }, {
            .mfr_id           = MANUFACTURER_ST,
            .dev_id           = M50LPW080,
            .name       = "ST M50LPW080",
            .uaddr            = {
                  [0] = MTD_UADDR_UNNECESSARY,    /* x8 */
            },
            .DevSize    = SIZE_1MiB,
            .CmdSet           = P_ID_INTEL_EXT,
            .NumEraseRegions= 1,
            .regions    = {
                  ERASEINFO(0x10000,16),
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVT160,
            .name       = "Toshiba TC58FVT160",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000,31),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x04000,1)
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVB160,
            .name       = "Toshiba TC58FVB160",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA  /* x16 */
            },
            .DevSize    = SIZE_2MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x04000,1),
                  ERASEINFO(0x02000,2),
                  ERASEINFO(0x08000,1),
                  ERASEINFO(0x10000,31)
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVB321,
            .name       = "Toshiba TC58FVB321",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA  /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000,8),
                  ERASEINFO(0x10000,63)
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVT321,
            .name       = "Toshiba TC58FVT321",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA  /* x16 */
            },
            .DevSize    = SIZE_4MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000,63),
                  ERASEINFO(0x02000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVB641,
            .name       = "Toshiba TC58FVB641",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA, /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x02000,8),
                  ERASEINFO(0x10000,127)
            }
      }, {
            .mfr_id           = MANUFACTURER_TOSHIBA,
            .dev_id           = TC58FVT641,
            .name       = "Toshiba TC58FVT641",
            .uaddr            = {
                  [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */
                  [1] = MTD_UADDR_0x0555_0x02AA, /* x16 */
            },
            .DevSize    = SIZE_8MiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 2,
            .regions    = {
                  ERASEINFO(0x10000,127),
                  ERASEINFO(0x02000,8)
            }
      }, {
            .mfr_id           = MANUFACTURER_WINBOND,
            .dev_id           = W49V002A,
            .name       = "Winbond W49V002A",
            .uaddr            = {
                  [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
            },
            .DevSize    = SIZE_256KiB,
            .CmdSet           = P_ID_AMD_STD,
            .NumEraseRegions= 4,
            .regions    = {
                  ERASEINFO(0x10000, 3),
                  ERASEINFO(0x08000, 1),
                  ERASEINFO(0x02000, 2),
                  ERASEINFO(0x04000, 1),
            }
      }
};


static int cfi_jedec_setup(struct cfi_private *p_cfi, int index);

static int jedec_probe_chip(struct map_info *map, __u32 base,
                      unsigned long *chip_map, struct cfi_private *cfi);

static struct mtd_info *jedec_probe(struct map_info *map);

static inline u32 jedec_read_mfr(struct map_info *map, __u32 base,
      struct cfi_private *cfi)
{
      map_word result;
      unsigned long mask;
      u32 ofs = cfi_build_cmd_addr(0, cfi_interleave(cfi), cfi->device_type);
      mask = (1 << (cfi->device_type * 8)) -1;
      result = map_read(map, base + ofs);
      return result.x[0] & mask;
}

static inline u32 jedec_read_id(struct map_info *map, __u32 base,
      struct cfi_private *cfi)
{
      map_word result;
      unsigned long mask;
      u32 ofs = cfi_build_cmd_addr(1, cfi_interleave(cfi), cfi->device_type);
      mask = (1 << (cfi->device_type * 8)) -1;
      result = map_read(map, base + ofs);
      return result.x[0] & mask;
}

static inline void jedec_reset(u32 base, struct map_info *map,
      struct cfi_private *cfi)
{
      /* Reset */

      /* after checking the datasheets for SST, MACRONIX and ATMEL
       * (oh and incidentaly the jedec spec - 3.5.3.3) the reset
       * sequence is *supposed* to be 0xaa at 0x5555, 0x55 at
       * 0x2aaa, 0xF0 at 0x5555 this will not affect the AMD chips
       * as they will ignore the writes and dont care what address
       * the F0 is written to */
      if(cfi->addr_unlock1) {
            DEBUG( MTD_DEBUG_LEVEL3,
                   "reset unlock called %x %x \n",
                   cfi->addr_unlock1,cfi->addr_unlock2);
            cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
            cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, cfi->device_type, NULL);
      }

      cfi_send_gen_cmd(0xF0, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
      /* Some misdesigned intel chips do not respond for 0xF0 for a reset,
       * so ensure we're in read mode.  Send both the Intel and the AMD command
       * for this.  Intel uses 0xff for this, AMD uses 0xff for NOP, so
       * this should be safe.
       */
      cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
      /* FIXME - should have reset delay before continuing */
}


static inline __u8 finfo_uaddr(const struct amd_flash_info *finfo, int device_type)
{
      int uaddr_idx;
      __u8 uaddr = MTD_UADDR_NOT_SUPPORTED;

      switch ( device_type ) {
      case CFI_DEVICETYPE_X8:  uaddr_idx = 0; break;
      case CFI_DEVICETYPE_X16: uaddr_idx = 1; break;
      case CFI_DEVICETYPE_X32: uaddr_idx = 2; break;
      default:
            printk(KERN_NOTICE "MTD: %s(): unknown device_type %d\n",
                   __func__, device_type);
            goto uaddr_done;
      }

      uaddr = finfo->uaddr[uaddr_idx];

      if (uaddr != MTD_UADDR_NOT_SUPPORTED ) {
            /* ASSERT("The unlock addresses for non-8-bit mode
               are bollocks. We don't really need an array."); */
            uaddr = finfo->uaddr[0];
      }

 uaddr_done:
      return uaddr;
}


static int cfi_jedec_setup(struct cfi_private *p_cfi, int index)
{
      int i,num_erase_regions;
      __u8 uaddr;

      printk("Found: %s\n",jedec_table[index].name);

      num_erase_regions = jedec_table[index].NumEraseRegions;

      p_cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL);
      if (!p_cfi->cfiq) {
            //xx printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
            return 0;
      }

      memset(p_cfi->cfiq,0,sizeof(struct cfi_ident));

      p_cfi->cfiq->P_ID = jedec_table[index].CmdSet;
      p_cfi->cfiq->NumEraseRegions = jedec_table[index].NumEraseRegions;
      p_cfi->cfiq->DevSize = jedec_table[index].DevSize;
      p_cfi->cfi_mode = CFI_MODE_JEDEC;

      for (i=0; i<num_erase_regions; i++){
            p_cfi->cfiq->EraseRegionInfo[i] = jedec_table[index].regions[i];
      }
      p_cfi->cmdset_priv = NULL;

      /* This may be redundant for some cases, but it doesn't hurt */
      p_cfi->mfr = jedec_table[index].mfr_id;
      p_cfi->id = jedec_table[index].dev_id;

      uaddr = finfo_uaddr(&jedec_table[index], p_cfi->device_type);
      if ( uaddr == MTD_UADDR_NOT_SUPPORTED ) {
            kfree( p_cfi->cfiq );
            return 0;
      }

      p_cfi->addr_unlock1 = unlock_addrs[uaddr].addr1;
      p_cfi->addr_unlock2 = unlock_addrs[uaddr].addr2;

      return 1;   /* ok */
}


/*
 * There is a BIG problem properly ID'ing the JEDEC device and guaranteeing
 * the mapped address, unlock addresses, and proper chip ID.  This function
 * attempts to minimize errors.  It is doubtfull that this probe will ever
 * be perfect - consequently there should be some module parameters that
 * could be manually specified to force the chip info.
 */
static inline int jedec_match( __u32 base,
                         struct map_info *map,
                         struct cfi_private *cfi,
                         const struct amd_flash_info *finfo )
{
      int rc = 0;           /* failure until all tests pass */
      u32 mfr, id;
      __u8 uaddr;

      /*
       * The IDs must match.  For X16 and X32 devices operating in
       * a lower width ( X8 or X16 ), the device ID's are usually just
       * the lower byte(s) of the larger device ID for wider mode.  If
       * a part is found that doesn't fit this assumption (device id for
       * smaller width mode is completely unrealated to full-width mode)
       * then the jedec_table[] will have to be augmented with the IDs
       * for different widths.
       */
      switch (cfi->device_type) {
      case CFI_DEVICETYPE_X8:
            mfr = (__u8)finfo->mfr_id;
            id = (__u8)finfo->dev_id;

            /* bjd: it seems that if we do this, we can end up
             * detecting 16bit flashes as an 8bit device, even though
             * there aren't.
             */
            if (finfo->dev_id > 0xff) {
                  DEBUG( MTD_DEBUG_LEVEL3, "%s(): ID is not 8bit\n",
                         __func__);
                  goto match_done;
            }
            break;
      case CFI_DEVICETYPE_X16:
            mfr = (__u16)finfo->mfr_id;
            id = (__u16)finfo->dev_id;
            break;
      case CFI_DEVICETYPE_X32:
            mfr = (__u16)finfo->mfr_id;
            id = (__u32)finfo->dev_id;
            break;
      default:
            printk(KERN_WARNING
                   "MTD %s(): Unsupported device type %d\n",
                   __func__, cfi->device_type);
            goto match_done;
      }
      if ( cfi->mfr != mfr || cfi->id != id ) {
            goto match_done;
      }

      /* the part size must fit in the memory window */
      DEBUG( MTD_DEBUG_LEVEL3,
             "MTD %s(): Check fit 0x%.8x + 0x%.8x = 0x%.8x\n",
             __func__, base, 1 << finfo->DevSize, base + (1 << finfo->DevSize) );
      if ( base + cfi_interleave(cfi) * ( 1 << finfo->DevSize ) > map->size ) {
            DEBUG( MTD_DEBUG_LEVEL3,
                   "MTD %s(): 0x%.4x 0x%.4x %dKiB doesn't fit\n",
                   __func__, finfo->mfr_id, finfo->dev_id,
                   1 << finfo->DevSize );
            goto match_done;
      }

      uaddr = finfo_uaddr(finfo, cfi->device_type);
      if ( uaddr == MTD_UADDR_NOT_SUPPORTED ) {
            goto match_done;
      }

      DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): check unlock addrs 0x%.4x 0x%.4x\n",
             __func__, cfi->addr_unlock1, cfi->addr_unlock2 );
      if ( MTD_UADDR_UNNECESSARY != uaddr && MTD_UADDR_DONT_CARE != uaddr
           && ( unlock_addrs[uaddr].addr1 != cfi->addr_unlock1 ||
              unlock_addrs[uaddr].addr2 != cfi->addr_unlock2 ) ) {
            DEBUG( MTD_DEBUG_LEVEL3,
                  "MTD %s(): 0x%.4x 0x%.4x did not match\n",
                  __func__,
                  unlock_addrs[uaddr].addr1,
                  unlock_addrs[uaddr].addr2);
            goto match_done;
      }

      /*
       * Make sure the ID's dissappear when the device is taken out of
       * ID mode.  The only time this should fail when it should succeed
       * is when the ID's are written as data to the same
       * addresses.  For this rare and unfortunate case the chip
       * cannot be probed correctly.
       * FIXME - write a driver that takes all of the chip info as
       * module parameters, doesn't probe but forces a load.
       */
      DEBUG( MTD_DEBUG_LEVEL3,
             "MTD %s(): check ID's disappear when not in ID mode\n",
             __func__ );
      jedec_reset( base, map, cfi );
      mfr = jedec_read_mfr( map, base, cfi );
      id = jedec_read_id( map, base, cfi );
      if ( mfr == cfi->mfr && id == cfi->id ) {
            DEBUG( MTD_DEBUG_LEVEL3,
                   "MTD %s(): ID 0x%.2x:0x%.2x did not change after reset:\n"
                   "You might need to manually specify JEDEC parameters.\n",
                  __func__, cfi->mfr, cfi->id );
            goto match_done;
      }

      /* all tests passed - mark  as success */
      rc = 1;

      /*
       * Put the device back in ID mode - only need to do this if we
       * were truly frobbing a real device.
       */
      DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): return to ID mode\n", __func__ );
      if(cfi->addr_unlock1) {
            cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
            cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, cfi->device_type, NULL);
      }
      cfi_send_gen_cmd(0x90, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
      /* FIXME - should have a delay before continuing */

 match_done:
      return rc;
}


static int jedec_probe_chip(struct map_info *map, __u32 base,
                      unsigned long *chip_map, struct cfi_private *cfi)
{
      int i;
      enum uaddr uaddr_idx = MTD_UADDR_NOT_SUPPORTED;
      u32 probe_offset1, probe_offset2;

 retry:
      if (!cfi->numchips) {
            uaddr_idx++;

            if (MTD_UADDR_UNNECESSARY == uaddr_idx)
                  return 0;

            cfi->addr_unlock1 = unlock_addrs[uaddr_idx].addr1;
            cfi->addr_unlock2 = unlock_addrs[uaddr_idx].addr2;
      }

      /* Make certain we aren't probing past the end of map */
      if (base >= map->size) {
            printk(KERN_NOTICE
                  "Probe at base(0x%08x) past the end of the map(0x%08lx)\n",
                  base, map->size -1);
            return 0;

      }
      /* Ensure the unlock addresses we try stay inside the map */
      probe_offset1 = cfi_build_cmd_addr(
            cfi->addr_unlock1,
            cfi_interleave(cfi),
            cfi->device_type);
      probe_offset2 = cfi_build_cmd_addr(
            cfi->addr_unlock1,
            cfi_interleave(cfi),
            cfi->device_type);
      if (  ((base + probe_offset1 + map_bankwidth(map)) >= map->size) ||
            ((base + probe_offset2 + map_bankwidth(map)) >= map->size))
      {
            goto retry;
      }

      /* Reset */
      jedec_reset(base, map, cfi);

      /* Autoselect Mode */
      if(cfi->addr_unlock1) {
            cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
            cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, cfi->device_type, NULL);
      }
      cfi_send_gen_cmd(0x90, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
      /* FIXME - should have a delay before continuing */

      if (!cfi->numchips) {
            /* This is the first time we're called. Set up the CFI
               stuff accordingly and return */

            cfi->mfr = jedec_read_mfr(map, base, cfi);
            cfi->id = jedec_read_id(map, base, cfi);
            DEBUG(MTD_DEBUG_LEVEL3,
                  "Search for id:(%02x %02x) interleave(%d) type(%d)\n",
                  cfi->mfr, cfi->id, cfi_interleave(cfi), cfi->device_type);
            for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
                  if ( jedec_match( base, map, cfi, &jedec_table[i] ) ) {
                        DEBUG( MTD_DEBUG_LEVEL3,
                               "MTD %s(): matched device 0x%x,0x%x unlock_addrs: 0x%.4x 0x%.4x\n",
                               __func__, cfi->mfr, cfi->id,
                               cfi->addr_unlock1, cfi->addr_unlock2 );
                        if (!cfi_jedec_setup(cfi, i))
                              return 0;
                        goto ok_out;
                  }
            }
            goto retry;
      } else {
            __u16 mfr;
            __u16 id;

            /* Make sure it is a chip of the same manufacturer and id */
            mfr = jedec_read_mfr(map, base, cfi);
            id = jedec_read_id(map, base, cfi);

            if ((mfr != cfi->mfr) || (id != cfi->id)) {
                  printk(KERN_DEBUG "%s: Found different chip or no chip at all (mfr 0x%x, id 0x%x) at 0x%x\n",
                         map->name, mfr, id, base);
                  jedec_reset(base, map, cfi);
                  return 0;
            }
      }

      /* Check each previous chip locations to see if it's an alias */
      for (i=0; i < (base >> cfi->chipshift); i++) {
            unsigned long start;
            if(!test_bit(i, chip_map)) {
                  continue; /* Skip location; no valid chip at this address */
            }
            start = i << cfi->chipshift;
            if (jedec_read_mfr(map, start, cfi) == cfi->mfr &&
                jedec_read_id(map, start, cfi) == cfi->id) {
                  /* Eep. This chip also looks like it's in autoselect mode.
                     Is it an alias for the new one? */
                  jedec_reset(start, map, cfi);

                  /* If the device IDs go away, it's an alias */
                  if (jedec_read_mfr(map, base, cfi) != cfi->mfr ||
                      jedec_read_id(map, base, cfi) != cfi->id) {
                        printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
                               map->name, base, start);
                        return 0;
                  }

                  /* Yes, it's actually got the device IDs as data. Most
                   * unfortunate. Stick the new chip in read mode
                   * too and if it's the same, assume it's an alias. */
                  /* FIXME: Use other modes to do a proper check */
                  jedec_reset(base, map, cfi);
                  if (jedec_read_mfr(map, base, cfi) == cfi->mfr &&
                      jedec_read_id(map, base, cfi) == cfi->id) {
                        printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
                               map->name, base, start);
                        return 0;
                  }
            }
      }

      /* OK, if we got to here, then none of the previous chips appear to
         be aliases for the current one. */
      set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */
      cfi->numchips++;

ok_out:
      /* Put it back into Read Mode */
      jedec_reset(base, map, cfi);

      printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
             map->name, cfi_interleave(cfi), cfi->device_type*8, base,
             map->bankwidth*8);

      return 1;
}

static struct chip_probe jedec_chip_probe = {
      .name = "JEDEC",
      .probe_chip = jedec_probe_chip
};

static struct mtd_info *jedec_probe(struct map_info *map)
{
      /*
       * Just use the generic probe stuff to call our CFI-specific
       * chip_probe routine in all the possible permutations, etc.
       */
      return mtd_do_chip_probe(map, &jedec_chip_probe);
}

static struct mtd_chip_driver jedec_chipdrv = {
      .probe      = jedec_probe,
      .name = "jedec_probe",
      .module     = THIS_MODULE
};

static int __init jedec_probe_init(void)
{
      register_mtd_chip_driver(&jedec_chipdrv);
      return 0;
}

static void __exit jedec_probe_exit(void)
{
      unregister_mtd_chip_driver(&jedec_chipdrv);
}

module_init(jedec_probe_init);
module_exit(jedec_probe_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Erwin Authried <eauth@softsys.co.at> et al.");
MODULE_DESCRIPTION("Probe code for JEDEC-compliant flash chips");

Generated by  Doxygen 1.6.0   Back to index