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br2_external/configs/mestre_x6200_defconfig

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+# Mestre — Buildroot defconfig for the Xiegu X6200
+# Milestone 1: serial console + SSH + Ethernet. No GUI, no audio.
+#
+# Derived from gdyuldin/AetherX6200Buildroot (GPL-2.0)
+# https://github.com/gdyuldin/AetherX6200Buildroot
+#
+# Build with:
+#   ./scripts/build.sh
+#
+# Subsequent milestones add packages incrementally on top of this base.
+
+# ---------------------------------------------------------------------------
+# Architecture: Allwinner R16 (sun8i-a33), Cortex-A7 quad-core
+# ---------------------------------------------------------------------------
+BR2_arm=y
+BR2_cortex_a7=y
+BR2_ARM_FPU_NEON_VFPV4=y
+
+# ---------------------------------------------------------------------------
+# Toolchain
+# ---------------------------------------------------------------------------
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_CCACHE=y
+BR2_SSP_REGULAR=y
+BR2_RELRO_PARTIAL=y
+
+# ---------------------------------------------------------------------------
+# System
+# ---------------------------------------------------------------------------
+BR2_TARGET_GENERIC_HOSTNAME="mestre"
+BR2_TARGET_GENERIC_ISSUE="Mestre — SDR Control Head"
+BR2_TARGET_GENERIC_ROOT_PASSWD="mestre"
+BR2_SYSTEM_BIN_SH_BASH=y
+BR2_SYSTEM_DHCP="eth0"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
+BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/rootfs-overlay"
+
+# ---------------------------------------------------------------------------
+# Post-image: assemble sdcard.img via genimage
+# ---------------------------------------------------------------------------
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/genimage.cfg"
+
+# ---------------------------------------------------------------------------
+# Linux kernel
+# ---------------------------------------------------------------------------
+# Pinned to 6.6 LTS. The X6200 board support (sun8i-a33/R16) has been
+# mainline since 4.x, so this is a stable, well-tested combination.
+#
+# NOTE: linux.config was derived from Aether's 6.1-era defconfig.
+# Run `make linux-olddefconfig` after the first build to migrate any
+# renamed or removed symbols for 6.6.
+#
+# NOTE: The LCD panel patch (patches/0001-drm-panel-jinglitai-jlt4013a.patch)
+# targets 6.1-era panel/Kconfig line numbers and may need forward-porting
+# for 6.6. Milestone 1 (serial console) does not require the LCD driver.
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.6.66"
+BR2_KERNEL_HEADERS_6_6=y
+BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/linux/linux.config"
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/linux/linux-midi.fragment"
+BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/linux/patches/"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_CUSTOM_DTS_PATH="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/dts/sun8i-r16-x6200.dts"
+BR2_LINUX_KERNEL_INSTALL_TARGET=y
+
+# ---------------------------------------------------------------------------
+# U-Boot
+# ---------------------------------------------------------------------------
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.10"
+BR2_TARGET_UBOOT_USE_CUSTOM_CONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/uboot/uboot.config"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
+BR2_TARGET_UBOOT_SPL=y
+BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
+BR2_TARGET_UBOOT_CUSTOM_DTS_PATH="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/dts/sun8i-r16-x6200.dts"
+
+# ---------------------------------------------------------------------------
+# Root filesystem
+# ---------------------------------------------------------------------------
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="512M"
+
+# ---------------------------------------------------------------------------
+# Host tools required for image assembly
+# ---------------------------------------------------------------------------
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="$(BR2_EXTERNAL_MESTRE_PATH)/board/x6200/uboot/boot.cmd"
+
+# ---------------------------------------------------------------------------
+# Target packages — minimal: remote access + diagnostics
+# ---------------------------------------------------------------------------
+BR2_PACKAGE_OPENSSH=y
+BR2_PACKAGE_NANO=y
+BR2_PACKAGE_LESS=y
+BR2_PACKAGE_BASH_COMPLETION=y
+BR2_PACKAGE_UTIL_LINUX_BINARIES=y
+BR2_PACKAGE_UTIL_LINUX_MOUNT=y
+BR2_PACKAGE_UTIL_LINUX_RFKILL=y
+BR2_PACKAGE_DOSFSTOOLS=y
+BR2_PACKAGE_DOSFSTOOLS_MKFS_FAT=y
+BR2_PACKAGE_E2FSPROGS=y
+BR2_PACKAGE_I2C_TOOLS=y
+BR2_PACKAGE_USBUTILS=y
+BR2_PACKAGE_EVTEST=y
+BR2_PACKAGE_STRACE=y
+
+# ---------------------------------------------------------------------------
+# NOT included here (added in later milestones):
+#   - X11 / framebuffer console / touchscreen
+#   - ALSA / PulseAudio / audio stack
+#   - piHPSDR / WDSP / SoapySDR
+#   - mestred (our evdev→MIDI service)
+#   - Network Manager (using simple /etc/network/interfaces for now)
+# ---------------------------------------------------------------------------