MDK5 NAND Page Data Layout setting

I wrote a programming like this.

extern ARM_DRIVER_NAND Driver_NAND0;
ARM_DRIVER_NAND *drv_info;

void setup_nand (void)
{ ARM_NAND_ECC_INFO info;

drv_info = &Driver_NAND0;

drv_info->InquireECC (0, &info);

}

Structure 'info' got NAND ECC Information using InquireECC function.

Can I set NAND ECC Information using InquireECC function?

No, you cannot set it, its the other way around. NAND driver must provide ARM_NAND_ECC_INFO structure and middleware then examines that structure using something similar to:

  ARM_DRIVER_NAND  *drv;
  ARM_NAND_ECC_INFO ecc;
  uint32_t          idx;

  idx = 0;
  while (drv->InquireECC (idx++, &ecc) == ARM_DRIVER_OK) {
    /* Some smart processing of ARM_NAND_ECC_INFO structure inside loop */
  }

ARM_NAND_ECC_INFO structure is meant as a description of driver ECC capabilities to the middleware, therefore the driver needs to provide that info, middleware examines it and sets appropriate page layout.

Yes, apparently its not supported.

What are you actually trying to achieve and which driver do you use?

I use uVision V5.17.0.0 and CMSIS Driver(Memory Bus)

When I used MDK4 before, I set nand configuration for NAND Page Data Layout.

static U32 Init (NAND_DRV_CFG *cfg) {

  /* Setup NAND Page Layout */
  cfg->PgLay->Pos_LSN  = 0;
  cfg->PgLay->Pos_COR  = 4;
  cfg->PgLay->Pos_BBM  = 5;
  cfg->PgLay->Pos_ECC  = 6;


  cfg->PgLay->SectInc  = 540;       // very important
  cfg->PgLay->SpareOfs = 512;       // very important
  cfg->PgLay->SpareInc = 540;       // very important

  /* Init NAND Driver Peripheral */
  /*          ...                */
  return RTV_NOERR;
}

I need to set SectInc value, SpareOfs value, SpareInc value.

You don't need to do that for memory bus driver - just enable Software ECC and you are done. Middleware will use default page layout for such case, because it does not need to worry about ECC placement by hardware controller.

I modified a FS_Config_NAND_0.h like this

Connect to hardware via Driver_NAND#     : 0
Device Number                            : 0
Bus Width                                : 8-bit
Page Size                           : 4096+244 bytes   // special setting. not default
Block Size                               : 64 pages
Device Size[blocks]                      : 4096
Page Caching                             : 8 pages
Block indexing                           : 16 blocks
Software ECC                             : Hamming (SLC)
Drive Cache Size                         : 8 KB

and I programmed the sample like this

finit ("N0:");
printf("finit = 0x%x\r\n",stat) ;

fmount ("N0:");
printf("fmount = 0x%x\r\n",stat) ;

stat = 0 ;
opt = "/FAT32";
stat = fformat ("N0:",opt) ;
printf("fformat = 0x%x\r\n",stat) ;


result :
finit = 0x0
fmount = 0x9
fformat = 0x9

#define fsMediaError    0x09       // Media error

I don't know why I can not format a NAND Filesystem in KEIL5(MDK5).

But I succeeded to format a NAND Filesystem using a NAND Page Data Layout in KEIL4(MDK4).

Did you make sure, that you have your external memory controller properly configured?

I used a Micron NAND(MT29F8G08ABACA / 1GByte) and its features is like this

- Page size x8: 4320 bytes (4096 + 224 bytes)
– Block size: 64 pages (256K + 14K bytes)

– Device size: 8Gb: 4096 blocks

1 page = (4K + 224 bytes)

1 block = (4K + 224) bytes x 64 pages
        = (256K + 14K) bytes


Minimum required ECC : 8-bit ECC per 540 bytes of data