Linux patch to support 8GB NAND flash on iMX53 (MT29F64G08AJABA(8GB), 2CE) -blog archive

[qiang_li-mpu_se]

The default Linux BSP has issues to support the 8GB NAND, the attached is the patch to fix it, all modified codes are marked with flag "qiang_debug".

Both uboot. kernel and mtd-utilis need be updated.

In Uboot, "nand erase" can erase the whole NAND.

Nand partition in mx53_evk.c is:
static struct mtd_partition nand_flash_partitions[] = {
/* MX53 ROM require the boot FCB/DBBT support which need
* more space to store such info on NAND boot partition.
* 16M should cover all kind of NAND boot support on MX53.
*/
   {
    .name = "bootloader",
    .offset = 0,
    .size = 16 * 1024 * 1024},
   {
    .name = "nand.kernel",
    .offset = MTDPART_OFS_APPEND,
    .size = 5 * 1024 * 1024},
   {
    .name = "nand.rootfs",
    .offset = MTDPART_OFS_APPEND,
    .size = 256 * 1024 * 1024},
   {
    .name = "nand.userfs1",
    .offset = MTDPART_OFS_APPEND,
    .size = 256 * 1024 * 1024},
   {
    .name = "nand.userfs2",
    .offset = MTDPART_OFS_APPEND,
    .size = MTDPART_SIZ_FULL},
};

In linux rootfs, I used the followed commands for NAND:
flash_eraseall /dev/mtd2
ubiattach /dev/ubi_ctrl -m 2 -d 2
ubimkvol /dev/ubi2 -n 0 -N rootfs -m
mkdir -p /mnt/ubi2; mount -t ubifs ubi2_0 /mnt/ubi2

flash_eraseall /dev/mtd3
ubiattach /dev/ubi_ctrl -m 3 -d 3
ubimkvol /dev/ubi3 -n 0 -N userfs1 -m
mkdir -p /mnt/ubi3; mount -t ubifs ubi3_0 /mnt/ubi3

flash_eraseall /dev/mtd4
ubiattach /dev/ubi_ctrl -m 4 -d 4
ubimkvol /dev/ubi4 -n 0 -N userfs2 -m
mkdir -p /mnt/ubi4; mount -t ubifs ubi4_0 /mnt/ubi4

Original Attachment has been moved to: R10.3.2-Code-update-for-large-NAND_0413.zip

[qiang_li-mpu_se]

Maybe you need double check the timing parameters. They can be found in the NAND datasheet.
.data_setup_in_ns = 10,
.data_hold_in_ns = 5,
.address_setup_in_ns = 10,

[HuiShao]

Hi Qiang

I am working on a customized board based on iMX53 QSB and enabling

MT29F2G08ABBEAH4 NAND via PATA I/F in u-boot. Wondering if you could help.

Here are chip info:

Single-level cell (SLC) technology

• Organization

– Page size x8: 2112 bytes (2048 + 64 bytes)

– Page size x16: 1056 words (1024 + 32 words)

– Block size: 64 pages (128K + 4K bytes)

– Plane size: 2 planes x 1024 blocks per plane

– Device size: 2Gb: 2048 blocks

And nand_device_info_table_type_7[] in drivers/mtd/nand/nand_device_info.c       

{

        .end_of_table             = false,

        .manufacturer_code        = 0x2c,

        .device_code              = 0xaa,

        .cell_technology          = NAND_DEVICE_CELL_TECH_SLC,

        .chip_size_in_bytes       = 256LL*SZ_1M,

        .block_size_in_pages      = 64,

        .page_total_size_in_bytes = 2*SZ_1K + 64,

        .ecc_strength_in_bits     = 4,

        .ecc_size_in_bytes        = 512,

        .data_setup_in_ns         = 10,

        .data_hold_in_ns          = 5,

        .address_setup_in_ns      = 10,

        .gpmi_sample_delay_in_ns  = 6,

        .tREA_in_ns               = -1,

        .tRLOH_in_ns              = -1,

        .tRHOH_in_ns              = -1,

        "MT29F2G08ABBEAH4",

        },

What i got is NAND probe is OK but read/write/erase are all failed:

MX53-CSSU U-Boot > nand device

Device 0: NAND 256MiB 1,8V 8-bit, sector size 128 KiB

MX53-CSSU U-Boot > nand erase 0x20000 0x20000

NAND erase: device 0 offset 0x20000, size 0x20000

NAND 256MiB 1,8V 8-bit: MTD Erase failure: -5

OK

MX53-CSSU U-Boot > nand write 0xf8006000 0x0 0x20000

NAND write: device 0 offset 0x0, size 0x20000

nand_do_write_ops: Device is write protected NAND write to offset 0 failed -5

0 bytes written: ERROR

MX53-CSSU U-Boot > nand read 0xf8006000 0x0 0x20000

NAND read: device 0 offset 0x0, size 0x20000

UnCorrectable RS-ECC Error

UnCorrectable RS-ECC Error

UnCorrectable RS-ECC Error

UnCorrectable RS-ECC Error

...

UnCorrectable RS-ECC Error

131072 bytes read: OK

Do you have any hints? Thanks in advance,

Hui