Versions Compared

Old Version 4

changes.mady.by.user user-e5206

Saved on

compared with

New Version Current

changes.mady.by.user True Loan

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

  1. Copy u-boot.imx-nand to the Boot partition of the SD card. In order to be able to save the environment to NAND and boot kernel images from NAND by default, the u-boot.imx-nand image is needed. The default u-boot.imx image will default to SD card. Both images are available in the release binaries. 

    Code Block
    cp u-boot.imx-nand /media/<user>/Boot\ imx7/; sync


    Info

    To build a u-boot.imx-nand image with Yocto, follow the same instructions for building the BSP described in the Quickstart, but set the UBOOT_CONFIG variable to nand in $YOCTO_DIR/build/conf/local.conf before starting the build:

    Code Block
    UBOOT_CONFIG = "nand"



  2. Create a new partition on the SD card to hold the root filesystem ext4 image.

    Code Block
    sudo fdisk /dev/sd<X>

        p           print current partitions (note end of partition 2, 1826815 for NXP 1.2.0 release)
        n           newpartition
        p           primary
        3           partition number
        1826816     (start after end of partition 2) first sector
        <enter>       Use defaultvalue forlast sector
        t           Change partition systemid
        3           Partition number
        c           FAT32
        w           write table to disk and exit

sudo mkfs.vfat -n "data" /dev/sd<X>3



  3. Copy the filesystem image to the new "data" partition. Due to the size of NAND, the standard 'fsl-image-gui' and 'fsl-image-validation-imx' filesystems do not fit on NAND, so a smaller filesystem will need to be used. This example uses the Yocto image "core-image-minimal", which is included in the BSP release images.

    Code Block
    cp core-image-minimal-<MACHINE NAME>.tar.bz2 /media/<user>/data/; sync


  4. Set the boot switches, according to Boot Configurations, to boot from SD card and power on the board into Linux.

  5. Erase mtd0 and use NXP's utility "kobs-ng" to flash u-boot.imx-nand to NAND:

    Code Block
    flash_erase /dev/mtd0 0 0
kobs-ng init -x /run/media/mmcblk0p1/u-boot.imx-nand



  6. Flash zImage and device tree :

    Code Block
    flash_erase /dev/mtd1 0 0
nandwrite -p /dev/mtd1 /run/media/mmcblk0p1/zImage

flash_erase /dev/mtd2 0 0
nandwrite -p /dev/mtd2 /run/media/mmcblk0p1/<MACHINE NAME>.dtb


  7. Flash filesystem:

    Code Block
    flash_erase /dev/mtd3 0 0
ubiformat /dev/mtd3; ubiattach /dev/ubi_ctrl -m 3; ubimkvol /dev/ubi0 -N rootfs -m
mkdir /tmp/rootfs
mount -t ubifs ubi0:rootfs /tmp/rootfs
tar -xf /run/media/mmcblk0p3/core-image-minimal-<MACHINE NAME>.tar.bz2 -C /tmp/rootfs/; sync


  8. Power off the board, set boot switches according to Boot Configurations, and power back on.

...