How to load and boot from NAND Flash for ls1043ardb

[TrinathK]

Hi all,

I am using ls1043ardb and used flex commands to build and install my images (firmware, boot partition and rootfs ) to SD card. Now i want to deploy my images into the NAND flash and boot from it. Let me know the step by step process for images generation, loading and booting.

Thanks in advance.

[TrinathK]

Hi Yipingwang,

Thanks a lot for correcting me. Please let me know how may i load .itb file also.

[yipingwang]

Your .itb image is too large to load to NAND flash.

[TrinathK]

Hi yipingwang,

      Forget about the size and let me know the process for loading .itb file, which will be helpful if my boot device is other than NAND (or) if i increase my NAND flash size in future.

Thanks in advance.

[yipingwang · Accepted solution]

Please refer to my first post in this thread.

[yipingwang]

Build NAND flash firmware image as the following

$ flex-builder -i mkfw -m ls1043ardb -b nand

Deploy firmware_ls1043ardb_uboot_nandboot.img on the target board.

=> tftp 0xa0000000 b25805/ls1043ardb/firmware_ls1043ardb_uboot_nandboot.img

=> nand erase 0 $filesize

=> nand write 0xa0000000 0 $filesize

Boot itb image from NAND

=> run nand_bootcmd

[TrinathK]

Hi yipingwang,

Thanks for your reply. My .itb file size is 672 MB but my NAND flash size is 512 MB. Please let me know, how may i load my .itb file in NAND flash ?

Also, I followed the below procedure for booting from NAND flash, for which booting is happening from NAND flash now. Let me know if i am wrong.

=> tftp 82000000 bl2_nand.pbl
=> nand erase 0x0 $filesize;nand write 0x82000000 0x0 $filesize;

=> tftp 82000000 fip_uboot.bin
=> nand erase 0x00100000 $filesize;nand write 0x82000000 0x00100000 $filesize;

=> tftp 82000000 Image
=> nand erase 0x01000000 $filesize;nand write 0x82000000 0x01000000 $filesize;

=> tftp 82000000 fsl-ls1043a-rdb-sdk.dtb
=> nand erase 0x02100000 $filesize;nand write 0x82000000 0x02100000 $filesize;

=> cpld reset nand

------------------------ After reset, i stopped autoboot ----------------------------

=> setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p4 rootwait rw earlycon=uart8250

=> setenv nand_bootcmd "nand read 0x81000000 0x01000000 $filesize; nand read 0x90000000 0x02100000 $filesize;booti 0x81000000 - 0x90000000;"

=> saveenv

=> run nand_bootcmd;

[yipingwang]

Please define nand_bootcmd as the following.

=> setenv nand_bootcmd "nand read 0x81000000 0x01000000 0x2500000; nand read 0x90000000 0x02100000 0x8000;booti 0x81000000 - 0x90000000;