Update NAND Flash

Update of NAND boot image needs the aid of u-boot. Whether or not NAND Flash has data, the u-boot booted through TF card can be used to update NAND Flash images.

  • Preparation
    • Format the TF card to FAT or FAT32 file system by “HP USB Disk Storage Format Tool 2.0.6” from directory “03-Tools/” of CD.
    • Copy “MLO”, “u-boot.img”, “uImage_xx” and “ubi.img” image files under directory “02-Images\Linux-image\512M_NandFlash\ LCD_4.3” to the TF card from the CD
  • Update
    • Insert the TF card with the system images into the development board, connect the JP8’s PIN1 and PIN2, power on and boot it. Press any key on the PC keyboard to enter the u-boot according to the following prompts:
    U-Boot SPL 2011.09 (Jan 13 2014 - 17:02:44)
    Texas Instruments Revision detection unimplemented
    Booting from MMC...
    OMAP SD/MMC: 0
    reading u-boot.img
    reading u-boot.img

    U-Boot 2011.09 (Jan 13 2014 - 17:02:44)

    I2C:   ready
    DRAM:  256 MiB
    WARNING: Caches not enabled
    Did not find a recognized configuration, assuming General purpose EVM in Profile 0  with Daughter board
    NAND:  HW ECC Hamming Code selected
    256 MiB
    MMC:   OMAP SD/MMC: 0
    *** Warning - bad CRC, using default environment

    Net:   cpsw
    Hit any key to stop autoboot:  0

* After entering the u-boot command line, input “run updatesys” from the PC keyboard to start automatic updating process.

    # run updatesys

    NAND erase.chip: device 0 whole chip
    Erasing at 0x1ffe0000 -- 100% complete.
    OK
    reading MLO

    38167 bytes read
    HW ECC BCH8 Selected

    NAND write: device 0 offset 0x0, size 0x9517
     38167 bytes written: OK
    reading u-boot.img

    232892 bytes read
    HW ECC BCH8 Selected

    NAND write: device 0 offset 0x80000, size 0x38dbc
     232892 bytes written: OK
    reading uImage

    3506488 bytes read
    HW ECC BCH8 Selected

    NAND write: device 0 offset 0x280000, size 0x358138
     3506488 bytes written: OK
    reading ubi.img

    14942208 bytes read
    SW ECC selected

    NAND write: device 0 offset 0x780000, size 0xe40000
     14942208 bytes written: OK

* After the system updated, the LED D3 on CPU board flashes. Pull out the TF card, connect the JP8’s PIN2 and PIN3, and then re-power the system to boot from NandFlash.