[Yocto LS1028ardb] How to flash Yocto outputs to eval board

[imuguruza]

Hi there,

I have compiled latest yocto kirkstone layers and now I am trying to use them to boot the LS1028ardb board.

The main two things I want to do are

• flash a sd card with the Yocto compilation to boot the board
• flash the xspi nor with the Yocto compilation to boot the board

I have read the Yocto manual and LSDK manual to understand the process, but I am still unsure how to proceed. How should I proceed? Any additional updated doc about how to handle de Yocto compilation bootloader, kernel and rootfs?

Thanks,

imuguruza

[yipingwang]

Please refer to the following procedure to deploy images to SD card.

Please connect SD card to your host PC

1. Please create two partitions with Linux command "fdisk", one 1G FAT16 and 2G one ext2/ext3 or with remainder of the available disk size.
# mkfs.vfat /dev/sdb1
# mkfs.ext2 /dev/sdb2

2. Please deployed RCW + PBI + BL2(bl2_<boot_mode>.pbl)image to SD card as the following.
dd if=bl2_sd.pbl of=/dev/sdb bs=512 seek=8

note:/dev/sdb is SD device name.

Please deploy TF-A FIP image at 0x00800 in SD card.

dd if=fip_uboot.bin of=/dev/sdb bs=512 seek=204

3. Please deploy rootfs filesystem to SD card in the host PC as the following.
# mkdir  /temp
# mount  /dev/sdb2  /temp
# cd /temp
# cp  fsl-image-networking-ls1028ardb.tar.gz .
# tar -xzvf  fsl-image-networking-ls1028ardb.tar.gz
# rm  fsl-image-networking-ls1028ardb.tar.gz
Please deploy Kernel Image and the dtb to the /boot folder.
# cp Image boot
# cp  fsl-ls1028a-rdb-sdk.dtb boot

Configure the switch setting boot from SD card 

Set the environment in uboot for SD boot.
=> setenv bootcmd 'setenv bootargs root=/dev/mmcblk0p2 rw rootdelay=5 console=ttyS0,115200;mmcinfo;ext2load mmc 0:2 0xa0000000 /boot/Image;ext2load mmc 0:2 0xb0000000 /boot/fsl-ls1028a-rdb-sdk.dtb;booti 0xa0000000 - 0xb0000000'
=> saveenv

Boot up Linux
=> boot

You could program atf images to xspi under SD u-boot environment.

[imuguruza]

Hi,

I have followed your instructions and obtained the next error when booting:

NOTICE:  Fixed DDR on board                                                                                                              
                                                                                                                                         
NOTICE:  4 GB DDR4, 32-bit, CL=11, ECC on                                                                                                
NOTICE:  BL2: v2.6(release):lf-5.15.32-2.0.0-0-gc6a19b1a3                                                                                
NOTICE:  BL2: Built : 06:37:22, Jun  7 2022
ERROR:   BL2: Failed to load image id 3 (-2)
Authentication failure

I am not sure if it's because the BL2 is not finding fip_uboot file or if the dd offset should be other or which is the cause uboot is not launching. Any idea?

Regards,

imuguruza

[imuguruza]

I am wondering if the fip file offset is correct. Checking the Yocto doc, I've found the next table:

So, instead of using the suggested 204 offset shouldn't be the 800?

Still I have tried that out and doesn't work... I am missing something else? :'\

Regards,

imuguruza

[yipingwang · Accepted solution]

My mistake, it should be

Please deploy TF-A FIP image at 0x00800 in SD card.

dd if=fip_uboot.bin of=/dev/sdb bs=512 seek=2048

[imuguruza]

Yeahp, now it works:

so the bs is just 0x800 is decimal... I didn't try that

Regards,

imuguruza

[imuguruza]

ping @yipingwang , could you help me?

Thanks,

imuguruza

[imuguruza]

OK, I have been reviweing the doc.

Should I apply the offset suggested in the next table using dd for flashinf the different binaries?

But, how can I generate the itb file? Using mkimage? Which command should I use?

That's a compressed rfs, how can I use an uncompressed rfs? Should I change the bootargs to point that out? How and where?

I am missing all that info...

Regards,

imuguruza