[PATCH 3/3] board: Add QEMU m68k virt board support

[Tom Rini]

On Thu, Dec 18, 2025 at 06:52:52PM +0000, Kuan-Wei Chiu wrote:

> Add support for the QEMU 'virt' machine on the m68k architecture. This
> board emulates a generic machine based on the Motorola 68040 CPU
> equipped with Goldfish virtual peripherals.
> 
> Introduce the necessary board configuration and initialization
> infrastructure. The implementation includes logic to parse the QEMU
> bootinfo interface, enabling dynamic detection of system RAM size to
> adapt to the virtual machine's configuration.
> 
> Enable the Goldfish TTY driver to provide a serial console, which
> facilitates interaction when running QEMU with the -nographic option.
> Additionally, include comprehensive documentation covering build
> instructions and usage examples to guide users in deploying U-Boot
> within the virtualization environment.
> 
> Signed-off-by: Kuan-Wei Chiu <visitorckw at gmail.com>
[snip]
> diff --git a/board/emulation/qemu-m68k/MAINTAINERS b/board/emulation/qemu-m68k/MAINTAINERS
> new file mode 100644
> index 00000000000..c2f4cc40a56
> --- /dev/null
> +++ b/board/emulation/qemu-m68k/MAINTAINERS
> @@ -0,0 +1,10 @@
> +QEMU M68K VIRT BOARD
> +M:  Kuan-Wei Chiu <visitorckw at gmail.com>
> +S:  Maintained
> +F:  board/emulation/qemu-m68k/
> +F:  board/emulation/common/
> +F:  include/configs/qemu-m68k.h
> +F:  configs/qemu-m68k_defconfig
> +F:  arch/m68k/cpu/m68040/
> +F:  arch/m68k/include/asm/bootinfo.h
> +F:  doc/board/emulation/qemu-m68k.rst

There was Kconfig spacing issues here as well, but also MAINTAINERS
files are usually tab not spaces. But if get_maintainer.pl is fine, OK.

> diff --git a/configs/qemu-m68k_defconfig b/configs/qemu-m68k_defconfig
> new file mode 100644
> index 00000000000..765ed9b7424
> --- /dev/null
> +++ b/configs/qemu-m68k_defconfig
> @@ -0,0 +1,17 @@
> +CONFIG_M68K=y
> +CONFIG_TARGET_QEMU_M68K=y
> +CONFIG_TEXT_BASE=0x00000000
> +CONFIG_SYS_LOAD_ADDR=0x00000000
> +CONFIG_SYS_MONITOR_LEN=262144
> +CONFIG_SYS_BOOTM_LEN=0x1000000
> +CONFIG_SYS_MALLOC_LEN=0x20000
> +# CONFIG_DISPLAY_BOARDINFO is not set
> +CONFIG_BAUDRATE=115200
> +
> +# CONFIG_OF_CONTROL is not set

This wasn't made with "make savedefconfig" and needs to be, please
generate it that way.

> diff --git a/doc/board/emulation/qemu-m68k.rst b/doc/board/emulation/qemu-m68k.rst
> new file mode 100644
> index 00000000000..19898e17cfc
> --- /dev/null
> +++ b/doc/board/emulation/qemu-m68k.rst
> @@ -0,0 +1,38 @@
> +.. SPDX-License-Identifier: GPL-2.0+
> +.. Copyright (C) 2025, Kuan-Wei Chiu <visitorckw at gmail.com>

Docs are good, thank you. But it needs to update the index.rst file too
to be included and also not trigger CI failure when building docs.

-- 
Tom
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