Edge2

Overview

The khadas_edge2 board supports the hardware features listed below.

on-chip / on-board: Feature integrated in the SoC / present on the board.
2 / 2: Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo: Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

khadas_edge2

/

rk3588s

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-A55 CPU1	`arm,cortex-a55`
Interrupt controller	on-chip	ARM Generic Interrupt Controller v31	`arm,gic-v3`
Serial controller	on-chip	ns16550 UART1	`ns16550`
Timer	on-chip	per-core ARM architected timer1	`arm,armv8-timer`

There are multiple serial ports on the board: Zephyr is using uart2 as serial console.

Use the following configuration to run basic Zephyr applications and kernel tests on Khadas Edge2 board. For example, with the Hello World:

# From the root of the zephyr repository
west build -b khadas_edge2 samples/hello_world

This will build an image with the hello world sample app.

Build the zephyr image:

mkimage -C none -A arm64 -O linux -a 0x10000000 -e 0x10000000 -d build/zephyr/zephyr.bin build/zephyr/zephyr.img

Burn the image on the board (we choose to use Rockchip burning tool rkdeveloptool, you will need a SPL which is provided by khadas:

rkdeveloptool db rk3588_spl_loader_*; rkdeveloptool wl 0x100000 zephyr.img; rkdeveloptool rd

The sector 0x100000 was chosen arbitrarily (far away from U-Boot image)

Use U-Boot to load and run Zephyr:

mmc read ${pxefile_addr_r} 0x100000 0x1000; bootm start ${pxefile_addr_r}; bootm loados; bootm go

0x1000 is the size (in number of sectors) or your image. Increase it if needed.

It will display the following console output:

*** Booting Zephyr OS build XXXXXXXXXXXX  ***
Hello World! khadas_edge2

Zephyr image can be loaded in DDR memory at address 0x10000000 from SD Card, EMMC, QSPI Flash or downloaded from network in uboot.