MQX Software SolutionsのトピックMQX MFS Nandflash ECC Failed

MQX MFS Nandflash ECC Failed

jonalvik — Wed, 27 Apr 2016 08:22:49 GMT

I have successfully used the MFS nandflash filesystem on the Vybrid tower kit, but I am having no luck in getting it to work on our custom hardware.

Hardware have been verified using low level nand driver ()

I am using the msf_nandflash example code for testing.

First I got an assert in PageOrderMap::Init

entryCount was 512, and the comments in the code suggested that I needed to change to 16bit entries. I modified the code accordigly.

Second I get an error when trying to initialize the filesystem.

Traced it to nfc_wl.cpp, nfc_read_page_with_metadata:

/* ECC Fix FAILED */

result = NANDFLASHERR_ECC_FAILED;

I can't get past this error, have tried Changing the ECC_SIZE to 0, 4, 8

Always same result.

Nand device: MT29F16G16ADACAH4_IT

Device setup:

/* MT29F16G16ADACAH4_IT organization */

#define MT29F16G16_PHYSICAL_PAGE_SIZE 4096

#define MT29F16G16_SPARE_AREA_SIZE 224

#define MT29F16G16_BLOCK_SIZE 262144 /* 256kB */

#define MT29F16G16_NUM_BLOCKS 8192

#define MT29F16G16_WIDTH 16

Bsp nand setup:

const NANDFLASH_INIT_STRUCT _bsp_nandflash_init =

{

/* NAME */ "nandflash:",

#if BSPCFG_NANDFLASH_USE_DMA

/* Low level driver */ &_nandflash_nfc_dma_devif,

#else

/* Low level driver */ &_nandflash_nfc_devif,

#endif

/* NANDFLASH_INFO_PTR */ _MT29F16G16_organization_16bit,

/* VIRTUAL_PAGE_SIZE */ 540,

/* NUM_VIRTUAL_PAGES */ 1048576,

/* PHY_PAGE_SIZE_TO_VIRTUAL_PAGE_SIZE_RATIO */ 8,

/* ECC_SIZE */ 0,
/* WRITE_VERIFY */ 0,

/* DEVICE_SPECIFIC_DATA */ 0

};

Using MQX 4.1.2

/Jon

Re: MQX MFS Nandflash ECC Failed

soledad — Tue, 17 May 2016 01:33:37 GMT

Hello Jon,

Sorry for the delay, could you please try with the following configuration:

Nand device: MT29F16G16ADACAH4_IT

Device setup:

/* MT29F16G16ADACAH4_IT organization */

#define MT29F16G16_PHYSICAL_PAGE_SIZE 4096

#define MT29F16G16_SPARE_AREA_SIZE 224

#define MT29F16G16_BLOCK_SIZE 262144 /* 256kB */

#define MT29F16G16_NUM_BLOCKS 8192

#define MT29F16G16_WIDTH 16

Bsp nand setup:

const NANDFLASH_INIT_STRUCT _bsp_nandflash_init =

{

/* NAME */ "nandflash:",

#if BSPCFG_NANDFLASH_USE_DMA

/* Low level driver */ &_nandflash_nfc_dma_devif,

#else

/* Low level driver */ &_nandflash_nfc_devif,

#endif

/* NANDFLASH_INFO_PTR */ _MT29F16G16_organization_16bit,

/* VIRTUAL_PAGE_SIZE */ 540,

/* NUM_VIRTUAL_PAGES */ 0,

/* PHY_PAGE_SIZE_TO_VIRTUAL_PAGE_SIZE_RATIO */ 0,

/* ECC_SIZE */ 8,
/* WRITE_VERIFY */ 0,

/* DEVICE_SPECIFIC_DATA */ 0

};

Please let me know if this helps,
Have a great day,
Sol

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Re: MQX MFS Nandflash ECC Failed

jonalvik — Tue, 17 May 2016 18:06:13 GMT

Thank you.

I will not be able to test until thursday, will post back with my results.

Jon

Re: MQX MFS Nandflash ECC Failed

jonalvik — Thu, 26 May 2016 09:53:11 GMT

soledad

I tried your suggestion, but get the exact same error as before.

What could be the cause for such an error?

Please provide further information / suggestions for resolving this issue.

Jon

Re: MQX MFS Nandflash ECC Failed

jonalvik — Mon, 13 Jun 2016 09:20:05 GMT

I upgraded to MQX 4.2.0.2

Still having the same issue, some help would be appreciated.

Apparently the settings for VIRTUAL_PAGE_SIZE and ECC_SIZE gets overridden by two defines in the platform bsp header file: BSP_VIRTUAL_PAGE_SIZE and BSP_ECC_SIZE

Tried changing these parameters .

At one point I had the filesystem up and running, but after erasing the flash, it failed again.

Jon

Re: MQX MFS Nandflash ECC Failed

jonalvik — Mon, 13 Jun 2016 19:06:29 GMT

Finally got a working solution!

Bsp nand setup:

const NANDFLASH_INIT_STRUCT _bsp_nandflash_init =

{

/* NAME */ "nandflash:",

#if BSPCFG_NANDFLASH_USE_DMA

/* Low level driver */ &_nandflash_nfc_dma_devif,

#else

/* Low level driver */ &_nandflash_nfc_devif,

#endif

/* NANDFLASH_INFO_PTR */ _MT29F16G16_organization_16bit,

/* VIRTUAL_PAGE_SIZE */ 0,

/* NUM_VIRTUAL_PAGES */ 0,

/* PHY_PAGE_SIZE_TO_VIRTUAL_PAGE_SIZE_RATIO */ 0,

/* ECC_SIZE */ 0,
/* WRITE_VERIFY */ 0,

/* DEVICE_SPECIFIC_DATA */ 0

};

in platform bsp header file:

#define BSP_VIRTUAL_PAGE_SIZE 512

#define BSP_ECC_SIZE 4

This works, but not if I set BSP_ECC_SIZE to 8 !

With 8 I get the ECC_FAILURE mentioned before.

NXP suggests ECC_SIZE 8, device datasheet suggests 8, Vybrid RM and drivers support 8.

I think it is not good enough with ECC_SIZE 4, but at least it works.

Jon

Re: MQX MFS Nandflash ECC Failed

jonalvik — Thu, 21 Jul 2016 19:36:11 GMT

After getting a working solution and testing it several times, I now have the same error again.

The solution I found is not working anymore, and I can only guess at what sequence of events led to a working solution before.

I don't think this is related to MFS, so I created a new thread here:

Nand Flash ECC Failed

Any help is greatly appreciated

Jon