1906887_en-US

[#1]

LSDK21.08 LS1043AQDS SETUP

Hello, Wang. With your help, my board ls1043aqds has entered uboot. I use LSDK 21.08 for development, and the boot mode is TF-A. But my qspi flash is small, only 16MB, so I can't write itb directly to flash and start kernel and ramdisk from qspi.

I think the next priority is to burn the kernel and ramdisk into 16GB emmc, and then load the kernel from emmc. But I don't know if I have to use an external writer to burn emmc at the moment, and I don't know exactly what needs to be modified and compiled in the next work.

I really hope to get your help and look forward to your reply as soon as possible. thank you.

@yipingwang

Re: LSDK21.08 LS1043AQDS SETUPDear WANG,Thank you very much for your help, I can now enter the official ubuntu file system.Re: LSDK21.08 LS1043AQDS SETUP

You need to modify LS1043AQDS device tree according to your custom board.

In LSDK 21.08 build environment:

$ source setup.env

$ flex-builder -c linux -m ls1043aqds

Go to Linux Kernel source code components/linux/linux, please modify arch/arm64/boot/dts/freescale/fsl-ls1043a-qds.dts according to your custom board.

For example, please delete the following device node, if there is no IFC NOR flash on your custom board.

nor@0,0 {
compatible = "cfi-flash";
reg = <0x0 0x0 0x8000000>;
big-endian;
bank-width = <2>;
device-width = <1>;
};

Then rebuild Linux Kernel

$ flex-builder -c linux -m ls1043aqds

Regenerate itb image

$ flex-builder -i mkitb -r yocto:tiny

Get the image flexbuild_lsdk2108_github/build/images/lsdk2108_yocto_tiny_LS_arm64.itb

If you need to the bootpartition image, please regenerate it with the following command

$ flex-builder -i mkbootpartition -a arm64

Re: LSDK21.08 LS1043AQDS SETUP

Wang,Thank you very much for your technical reply, and I am honored to get your help in debugging this series of boards for the first time. I have made some progress following your suggestions, but it seems that the kernel is stuck and cannot continue. I have attached the log, and I hope to get your help on what I should do next so that I can successfully enter ramdisk.

@yipingwang 

Re: LSDK21.08 LS1043AQDS SETUP

The emmc device is not removable, you could copy all your images to the USB device, then boot up the target board with image lsdk2108_yocto_tiny_LS_arm64.itb and deploy Ubuntu rootfs to emmc device in Linux on the target board.

For example under u-boot,

=> ext2load usb 0:1 0xa0000000 lsdk2108_yocto_tiny_LS_arm64.itb

=> bootm 0xa0000000#ls1043aqds

Under Linux on the target board, please run the following commands to deploy Kernel and Ubuntu rootfs to emmc device.

$ flex-installer -i pf -d /dev/mmcblk0

$ flex-installer -b boot_LS_arm64_lts_5.10.tgz -r rootfs_lsdk2108_ubuntu_main_arm64.tgz -d /dev/mmcblk0

Note:/dev/mmcblk0 is the emmc device name on the target board.