unable to build my custom board

[akifejaz]

Describe the bug

I've followed steps board_porting to add new board as vp but while build it says Error finding board: vp

Please also mention any information which could help others to understand
the problem you're facing:

• I'm adding riscv64 based board

To Reproduce

Steps to reproduce the behavior:

1. add new board at boards/riscv/vp with below directory structure.
   

2. Files content:

CmakeLists.txt

Kconfig

config BOARD_VP_RISCV64
	select VP_TARGET

Kconfig.defconfig

if BOARD_VP_RISCV64
    config BUILD_OUTPUT_HEX
	    default y
    
    config BOARD
	    default "vp_riscv64" if BOARD_VP_RISCV64

endif 

Kconfig.vp

config BOARD_VP_RISCV64
	select SOC_VP_VIRT_RISCV64

board.cmake

set(SUPPORTED_EMU_PLATFORMS qemu)

set(QEMU_binary_suffix riscv64)
set(QEMU_CPU_TYPE_${ARCH} riscv64)

set(QEMU_FLAGS_${ARCH}
  -nographic
  -machine virt
  -bios none
  -m 256
  )
board_set_debugger_ifnset(qemu)

board.yml
board: name: vp full_name: VP ISA Simulator for RISCV64 vendor: xcelerium socs: - name: riscv-privileged variants: - name: smp

vp.dts
#device tree of my custom riscv proc
vp.yml

vp_defconfig

CONFIG_PRIVILEGED_STACK_SIZE=2048*4
CONFIG_CONSOLE=n
CONFIG_SERIAL=n
CONFIG_UART_CONSOLE=n
CONFIG_STACK_SENTINEL=n
CONFIG_XIP=n
CONFIG_RISCV_PMP=n
# riscv-privileged

3. cd zephyrproject/zephyr; west build -p always -b vp samples/hello_world --build-dir vp_build/

Expected behavior

Build test as per my custom board configurations.

Logs and console output
After following the above steps i'm getting.

-- west build: making build dir /home/t_aejaz/Zephyr/zephyrproject/zephyr/vp_build pristine
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: /home/t_aejaz/Zephyr/zephyrproject/zephyr/samples/hello_world
-- CMake version: 3.30.2
-- Found Python3: /home/t_aejaz/Zephyr/zephyrproject/.venv/bin/python3 (found suitable version "3.10.12", minimum required is "3.10") found components: Interpreter
-- Cache files will be written to: /home/t_aejaz/.cache/zephyr
-- Zephyr version: 4.0.0-rc1 (/home/t_aejaz/Zephyr/zephyrproject/zephyr)
-- Found west (found suitable version "1.3.0", minimum required is "0.14.0")
CMake Error at /home/t_aejaz/Zephyr/zephyrproject/zephyr/cmake/modules/boards.cmake:196 (message):
  Error finding board: vp

  Error message: ERROR: SoC 'riscv-privileged' is not found, please ensure
  that the SoC exists and that soc-root containing 'riscv-privileged' has
  been correctly defined.

Call Stack (most recent call first):
  /home/t_aejaz/Zephyr/zephyrproject/zephyr/cmake/modules/zephyr_default.cmake:133 (include)
  /home/t_aejaz/Zephyr/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  /home/t_aejaz/Zephyr/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
  CMakeLists.txt:5 (find_package)


-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: /usr/bin/cmake -DWEST_PYTHON=/home/t_aejaz/Zephyr/zephyrproject/.venv/bin/python3 -B/home/t_aejaz/Zephyr/zephyrproject/zephyr/vp_build -GNinja -DBOARD=vp -S/home/t_aejaz/Zephyr/zephyrproject/zephyr/samples/hello_world

Environment (please complete the following information):

• OS: Linux
• Toolchain (e.g zephyr-sdk-0.16.8)
• using latest code commits

would really appreciate your help, Thanks!

[github-actions[bot]]

Hi @akifejaz! We appreciate you submitting your first issue for our open-source project. 🌟

Even though I'm a bot, I can assure you that the whole community is genuinely grateful for your time and effort. 🤖💙

[hongquan-prog]

The riscv in boards/riscv should be replaced with a valid vendor name, you can refer to dts/bindings/vendor-prefixes.txt

[hongquan-prog]

In addition, if you don't need to submit the board to zephyr, but just want to use it in your own application, you can refer to the file doc/develop/application/index.rst to add a custom board to your application.

[akifejaz]

In addition, if you don't need to submit the board to zephyr, but just want to use it in your own application, you can refer to the file doc/develop/application/index.rst to add a custom board to your application.

Thanks for quick response, my main intension is to use Zephyr rtos on my custom riscv based proc. which also has simulator support (mini version of qemu emulator), thus I'm trying to add new board .. I'm I on the right track?

[akifejaz]

The riscv in boards/riscv should be replaced with a valid vendor name, you can refer to dts/bindings/vendor-prefixes.txt

I resolved this, and build is ready now with my custom dts, but the build size of binary is too much my simulator doesnt support that much binary size, how can I disable everything and try enabling pheri/kernels or other things manually ? I read there is some menuconfig but cant find it.
384K is too much for me to start with.

EDIT: (Actually my custom board it didn't detected as I explained in issue, so, I tried to change the qemu_riscv64 by just changing its dts file with mine, it builds fine now but there is lot in binary, I cant run it on my simulator)

[JarmouniA]

I resolved this, and build is ready now with my custom dts, but the build size of binary is too much my simulator doesnt support that much binary size, how can I disable everything and try enabling pheri/kernels or other things manually ? I read there is some menuconfig but cant find it. 384K is too much for me to start with.

@akifejaz The first thing would be to disable peripheral that you don't need in DTS by putting "disabled" in their status. Next, you can go to auto_conf file in .build/zephyr/include and see Kconfig options that are enabled by default but are optional for your use case and mark them as disabled in your application's prj.conf. You can try reducing stack sizes as well to the minimum needed.
Also, you can try building with size optimization -DCONFIG_SIZE_OPTIMIZATIONS=y.
https://docs.zephyrproject.org/latest/develop/optimizations/footprint.html

[akifejaz]

The riscv in boards/riscv should be replaced with a valid vendor name, you can refer to dts/bindings/vendor-prefixes.txt

I think i'm confused here, I've added vendor name in list and adding board in there but it still not able to find out my board.
dts/bindings/vendor-prefixes.txt

and board dir. tree is.

Where content in files are.

t_aejaz@ip $ for file in boards/xcelerium/vp/*; do [ -f "$file" ] && echo "File: $(basename "$file")" && cat "$file" && echo; done

File: CMakeLists.txt

File: Kconfig

# Copyright (c) 2024 xcelerium 
# SPDX-License-Identifier: Apache-2.0

config BOARD_VP_RISCV64
        select VP_TARGET

File: Kconfig.defconfig

# Copyright (c) 2024 xcelerium
# SPDX-License-Identifier: Apache-2.0

if BOARD_VP_RISCV64
    config BUILD_OUTPUT_HEX
            default y
    
    config BOARD
            default "vp" if BOARD_VP_RISCV64

endif # BOARD_VP_RISCV64

File: Kconfig.vp

# Copyright (c) 2024 xcelerium 
# SPDX-License-Identifier: Apache-2.0

config BOARD_VP_RISCV64
        select SOC_VP_VIRT_RISCV64

File: board.cmake

File: board.yml

board:
  name: vp
  full_name: VP ISA Simulator for RISCV64
  vendor: xcelerium
  socs:
    - name: riscv-privileged
      variants:
        - name: smp

File: vp.dts

File: vp.yml

File: vp_defconfig

# SPDX-License-Identifier: Apache-2.0

CONFIG_PRIVILEGED_STACK_SIZE=2048*4
CONFIG_CONSOLE=n
CONFIG_SERIAL=n
CONFIG_UART_CONSOLE=n
CONFIG_STACK_SENTINEL=n
CONFIG_XIP=n
CONFIG_RISCV_PMP=n
# riscv-privileged

Can you please help me little in it? @hongquan-prog @JarmouniA