This layer provides machine configurations and recipes for building the bootable disk image with AndeSight Linux packages.

• ae350-a25mp
• ae350-a27l2
• ae350-a45mp
• ae350-ax25mp
• ae350-ax27l2
• ae350-ax45mp
• ae350-ax45mpv
• ae350-ax65

kas-container provides a Yocto development environment based on the Debian docker image. Before you proceed with the build process, make sure to have Docker installed on your host machine.

$ mkdir riscv-andes && cd riscv-andes
$ git clone https://github.com/andestech/meta-andes.git -b ast-v5_3_0-branch
$ wget https://raw.githubusercontent.com/siemens/kas/4.1/kas-container
$ chmod a+x ./kas-container

AndeSight v5.3.0 includes OpenSBI, U-Boot and Linux source based on the following versions.

• OpenSBI v1.2
• U-Boot v2023.01
• Linux 6.1.47

And, its RISC-V GNU toolchain versions are as follows:

• GCC 13.2.0
• Binutils 2.41

To build a Poky distro, follow below (using ae350-ax45mp as an example):

$ ./kas-container build meta-andes/kas/ae350-ax45mp.yml

Find the built image, bootloader binaries and boot files generated in build/tmp/deploy/images/, such as

• core-image-base-ae350-ax45mp.rootfs.wic.gz
• fitImage
• ax45mp_c4_d_dsp_ae350.dtb
• boot.scr.uimg
• uEnv.txt
• u-boot-spl.bin
• u-boot.itb

Use the Linux dd command to flash the image to an SD card.

$ gunzip -c <IMAGE>.wic.gz | sudo dd of=/dev/sdX bs=4M iflag=fullblock oflag=direct conv=fsync status=progress && sync

You can also use the belenaEther GUI to flash the image on Windows and macOS.

Next, insert the SD card, access the serial console with the baud rate settings 38400/8-N-1, and then reset the board. It will boot the target from MMC and load fw_dynamic.bin and u-boot.bin from u-boot.itb in the first partition.

If you want to update the bootloader, find the XIP mode SPL (u-boot-spl.bin), ITB (u-boot.itb) and device tree blob needed to be burned to the flash in the first partition. You can then burn the images using the sf command in the U-Boot prompt as follows, or alternatively using the SPI_Burn tool. (Please note that U-Boot SPL is prioritized to use u-boot.itb in the first partition of SD card. If it cannot be found, it will use the one burned to the flash.)

RISC-V # fatload mmc 0:1 0x600000 u-boot-spl.bin
RISC-V # sf probe 0:0 50000000 0
RISC-V # sf erase 0x0 0x10000
RISC-V # sf write 0x600000 0x0 0x10000

RISC-V # fatload mmc 0:1 0x600000 u-boot.itb
RISC-V # sf probe 0:0 50000000 0
RISC-V # sf erase 0x10000 0xa0000
RISC-V # sf write 0x600000 0x10000 0xa0000

RISC-V # fatload mmc 0:1 0x20000000 <DTB>
RISC-V # sf probe 0:0 50000000 0
RISC-V # sf erase 0xf0000 0x10000
RISC-V # sf write 0x20000000 0xf0000 0x10000

Set <TARGET_IP> to the IP address of the ICEman host.

$ $GDB -ex "target remote <TARGET_IP>:<PORT>" \
       -ex "set confirm off" \
       -ex "set pagination off" \
       -ex "monitor reset halt" \
       -ex "set \$ra=0" \
       -ex "set \$sp=0" \
       -ex "flushregs" \
       -ex "c"