Using own local u-boot and kernel sources

[bojidartonchev]

Hello,

I am trying to build an image for ASUS TinkerBoard 2 (RK3399) from the kirkstone branch. So first I cloned the official u-boot and kernel and I placed in the root poky folder (next to meta-rockchip). I created a new machine config in ./meta-rockchip/conf/machines, using the device tree and uboot from the new custom sources.

tinker-board-2.conf

#@TYPE: Machine
#@NAME: RK3399 Tinker Board 2

require conf/machine/include/rk3399.inc

KERNEL_DEVICETREE = "rockchip/rk3399-tinker_board_2.dtb"

UBOOT_MACHINE = "tinker_board_2_defconfig"

RK_WIFIBT_FIRMWARES = " \
        rkwifibt-firmware-ap6354-wifi \
        rkwifibt-firmware-ap6354-bt \
        brcm-tools \
"

MACHINE_EXTRA_RRECOMMENDS:append = " \
        linux-firmware-rk-cdndp \
"

Finally, I have added the override in my ./build/conf/local.conf

MACHINE ??= "tinker-board-2"
CORE_IMAGE_EXTRA_INSTALL += "kernel-modules tzdata"
IMAGE_FSTYPES = "wic.gz"
DISTRO_FEATURES += " systemd opengl x11"
DISTRO_FEATURES_BACKFILL_CONSIDERED += "sysvinit"
VIRTUAL-RUNTIME_init_manager = "systemd"
VIRTUAL-RUNTIME_initscripts = "systemd-compat-units"

SRC_URI_pn-linux-rockchip = " \
        git://${TOPDIR}/../kernel;protocol=file;usehead=1 \
        file://cgroups.cfg \
"
SRCREV_pn-linux-rockchip = "${AUTOREV}"
KBRANCH = "HEAD"

SRC_URI_pn-u-boot = " \
        git://${TOPDIR}/../u-boot;protocol=file;usehead=1 \
"
SRCREV_pn-u-boot = "${AUTOREV}"

The result is that bitbake core-image-minimal fails with the following errors:

make[3]: *** No rule to make target 'arch/arm64/boot/dts/rockchip/rk3399-tinker_board_2.dtb'. Stop. | *** Can't find default configuration "arch/../configs/tinker_board_2_defconfig"!

It seems it is still using your mirror for the kernel and u-boot. Any hint on what am I doing wrong would be appreciated.

Best regards!

[JeffyCN]

u-boot has multiple packges, not just 'u-boot'.

you can try to use dummy u-boot package

repo sync the yocto sdk's manifests, and check build/conf/include/rksdk/kernel.conf and build/conf/include/rksdk/u-boot.conf for example

note, for newer versions, you might need to use ':' instead of '_', like: SRC_URI:pn-linux-rockchip

[bojidartonchev]

I managed to get it working by:

1. .bbappend for the u-boot, appending the tinker_board_2_defconfig from official TinkerBoard2 u-boot
2. .bbappend for the kernel, appending the rk3399-tinker_board_2.dts and rk3399-tinker_board_2.dtsi from official TinkerBoard2 kernel
3. Adding the new device tree to the build config, so a .dtb is generated KERNEL_DEVICETREE += "rockchip/rk3399-tinker_board_2.dtb"