Comments regarding RPI 0W in extlinux.conf and config_common.txt

Config.in

@@ -2,5 +2,6 @@ menu "RPI Common packages"
 
 source "$BR2_EXTERNAL_RPI_COMMON_PATH/package/my-shared-lib/Config.in"
 source "$BR2_EXTERNAL_RPI_COMMON_PATH/package/my-common-tool/Config.in"
+source "$BR2_EXTERNAL_RPI_COMMON_PATH/package/gfxcanvas/Config.in"
 
 endmenu

board/raspberrypi/config_common.txt

@@ -1,13 +1,12 @@
-# Please note that this is only a sample, we recommend you to change it to fit
-# your needs.
-# You should override this file using BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE.
 # See http://buildroot.org/manual.html#rootfs-custom
 # and http://elinux.org/RPiconfig for a description of config.txt syntax
 
 start_file=start.elf
 fixup_file=fixup.dat
 
+# Device tree to be used bu U-Boot:
 device_tree=bcm2835-rpi-b-plus.dtb
+#device_tree=bcm2835-rpi-zero-w.dtb
 kernel=u-boot.bin
 
 # To use an external initramfs file

board/raspberrypi/device_table.txt

@@ -0,0 +1,12 @@
+# <name>				                <type>	<mode>	<uid>	<gid>	<major>	<minor>	<start>	<inc>	<count>
+
+# ssh keys
+/etc/ssh/ssh_host_ecdsa_key				f	    600	    0	    0	    -	    -	    -	    -	    -
+/etc/ssh/ssh_host_ed25519_key			f	    600	    0	    0	    -	    -	    -	    -	    -
+/etc/ssh/ssh_host_rsa_key				f	    600	    0	    0	    -	    -	    -	    -	    -
+
+#rtl8821cu usb modeswitch script
+/lib/mdev/rtl8821cu_usb_modeswitch.sh   f       755     0       0       -       -       -       -       -
+
+# WLAN setup
+/lib/mdev/wlan_setup.sh                 f       755     0       0       -       -       -       -       -

board/raspberrypi/dtoverlay/broadcom/ssd1306.dtso

@@ -0,0 +1,20 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835";
+
+    fragment@0 {
+        target = <&i2c1>;
+        __overlay__ {
+            ssd1306: oled@3c {
+                compatible = "solomon,ssd1306fb-i2c";
+                reg = <0x3c>;
+                solomon,width = <128>;
+                solomon,height = <64>;
+                solomon,page-offset = <0>;
+                solomon,com-invdir;
+            };
+        };
+    };
+};

board/raspberrypi/extlinux.conf

@@ -1,4 +1,9 @@
 label buildroot
 	kernel /zImage
-	devicetree /bcm2708-rpi-b-plus.dtb
+	devicetree /bcm2835-rpi-b-plus.dtb
+#	devicetree /bcm2835-rpi-zero-w.dtb
+	devicetree-overlay /ssd1306.dtbo
 	append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyAMA0,115200
+
+# In Raspberry Pi Zero W, the mini-uart is used for console instead of the PL011:
+#	append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyS1,115200

board/raspberrypi/linux_defconfig

@@ -0,0 +1,192 @@
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_PERF=y
+CONFIG_NAMESPACES=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_RELAY=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_EXPERT=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_PROFILING=y
+CONFIG_KEXEC=y
+CONFIG_ARCH_MULTI_V6=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARCH_BCM2835=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+CONFIG_VFP=y
+# CONFIG_SUSPEND is not set
+CONFIG_PM=y
+CONFIG_JUMP_LABEL=y
+# CONFIG_GCC_PLUGINS is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_KSM=y
+CONFIG_CMA=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_NETWORK_SECMARK=y
+CONFIG_NETFILTER=y
+CONFIG_BT=y
+CONFIG_BT_HCIUART=m
+CONFIG_BT_HCIUART_BCM=y
+CONFIG_CFG80211=y
+CONFIG_MAC80211=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_STANDALONE is not set
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_CONSTANTS=y
+CONFIG_SCSI_SCAN_ASYNC=y
+CONFIG_NETDEVICES=y
+CONFIG_BCMGENET=y
+CONFIG_USB_LAN78XX=y
+CONFIG_USB_USBNET=y
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_BRCMFMAC=m
+CONFIG_RTW88=y
+CONFIG_RTW88_8821CU=y
+CONFIG_RTW88_DEBUG=y
+CONFIG_RTW88_DEBUGFS=y
+CONFIG_ZD1211RW=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_BCM2835AUX=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_TTY_PRINTK=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_BCM2835=y
+CONFIG_SPI=y
+CONFIG_SPI_BCM2835=y
+CONFIG_SPI_BCM2835AUX=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_SENSORS_RASPBERRYPI_HWMON=m
+CONFIG_THERMAL=y
+CONFIG_BCM2711_THERMAL=y
+CONFIG_BCM2835_THERMAL=y
+CONFIG_WATCHDOG=y
+CONFIG_BCM2835_WDT=y
+CONFIG_MFD_SYSCON=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_MEDIA_SUPPORT=y
+CONFIG_DRM=y
+CONFIG_DRM_V3D=y
+CONFIG_DRM_VC4=y
+CONFIG_DRM_SIMPLEDRM=y
+CONFIG_DRM_SSD130X=y
+CONFIG_DRM_SSD130X_I2C=y
+CONFIG_FB=y
+CONFIG_FB_SSD1307=y
+CONFIG_SOUND=y
+CONFIG_SND=y
+CONFIG_SND_SOC=y
+CONFIG_SND_BCM2835_SOC_I2S=y
+CONFIG_USB=y
+CONFIG_USB_OTG=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_DWC2=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_ETH=m
+CONFIG_USB_ETH_EEM=y
+CONFIG_USB_G_SERIAL=m
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_SDHCI_IPROC=y
+CONFIG_MMC_BCM2835=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_GPIO=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_LEDS_TRIGGER_TRANSIENT=y
+CONFIG_LEDS_TRIGGER_CAMERA=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2835=y
+CONFIG_STAGING=y
+CONFIG_FB_TFT=y
+CONFIG_FB_TFT_SSD1306=y
+CONFIG_SND_BCM2835=m
+CONFIG_VIDEO_BCM2835=m
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_MAILBOX=y
+CONFIG_BCM2835_MBOX=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_PWM=y
+CONFIG_PWM_BCM2835=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_FANOTIFY=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NFS_FS=y
+CONFIG_ROOT_NFS=y
+CONFIG_NFSD=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_UTF8=y
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=32
+CONFIG_PRINTK_TIME=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_DEBUG_FS=y
+CONFIG_KGDB=y
+CONFIG_KGDB_KDB=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_FUNCTION_PROFILER=y
+CONFIG_STACK_TRACER=y
+CONFIG_SCHED_TRACER=y
+CONFIG_STRICT_DEVMEM=y
+CONFIG_TEST_KSTRTOX=y

board/raspberrypi/overlay/etc/network/interfaces

@@ -1,12 +0,0 @@
-# /etc/network/interfaces - Common network configuration
-#
-# This file is part of the shared rootfs overlay and provides a
-# sensible default network configuration for all Raspberry Pi projects.
-# Projects can override this by placing their own version in their
-# project-specific overlay (which is applied after this one).
-
-auto lo
-iface lo inet loopback
-
-auto eth0
-iface eth0 inet dhcp

board/raspberrypi/post-build.sh

@@ -0,0 +1,69 @@
+#!/bin/sh
+# post_build.sh - Common post-build script for Raspberry Pi
+#
+# Called by Buildroot after assembling the target rootfs.
+# Arguments:
+#   $1 = path to the target rootfs directory (e.g., output/target)
+#
+# Environment:
+#   BR2_EXTERNAL_RPI_COMMON_PATH = path to this external tree
+#
+# Use this script for:
+#   - Fixing file permissions
+#   - Creating symlinks
+#   - Generating config files that depend on build-time variables
+#   - Stripping unnecessary files from the rootfs
+#
+# Do NOT use this for:
+#   - Installing packages (use rootfs overlay or a package .mk instead)
+#   - Modifying files outside $1
+
+# Add usb_modeswitch mdev rule
+grep -q "usb_modeswitch" "$TARGET_DIR/etc/mdev.conf" || \
+    echo '$PRODUCT=bda/1a2b.* root:root 0660 */lib/mdev/rtl8821cu_usb_modeswitch.sh' >> "$TARGET_DIR/etc/mdev.conf"
+
+# Add wlan_setup mdev rule
+grep -q "wlan_setup" "$TARGET_DIR/etc/mdev.conf" || \
+    echo '$PRODUCT=bda/c820.* root:root 0660 */lib/mdev/wlan_setup.sh' >> "$TARGET_DIR/etc/mdev.conf"
+
+# Add wlan0 configuration
+grep -q "iface wlan0" "$TARGET_DIR/etc/network/interfaces" || \
+    cat >> "$TARGET_DIR/etc/network/interfaces" << 'EOF'
+
+auto wlan0
+iface wlan0 inet dhcp
+    pre-up ip link set wlan0 up
+    pre-up wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
+EOF
+
+# Generate /etc/build-info with details about this build
+build_user="$(id -un)"
+build_host="$(hostname)"
+build_date="$(date '+%Y-%m-%d %H:%M:%S %z')"
+
+# Determine the git revision the same way the Linux kernel does:
+# prefer a tag (git describe), fall back to the short hash, and append
+# "-dirty" if tracked files are modified or there are untracked files.
+build_rev="unknown"
+if [ -n "$BR2_EXTERNAL_RPI_COMMON_PATH" ] && \
+   git -C "$BR2_EXTERNAL_RPI_COMMON_PATH" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+    git_dir="$BR2_EXTERNAL_RPI_COMMON_PATH"
+    build_rev="$(git -C "$git_dir" describe --always --tags 2>/dev/null || \
+                 git -C "$git_dir" rev-parse --short HEAD 2>/dev/null || \
+                 echo unknown)"
+    # Refresh the index so diff-index doesn't report stale stat info
+    git -C "$git_dir" update-index --refresh >/dev/null 2>&1 || :
+    dirty=""
+    if ! git -C "$git_dir" diff-index --quiet HEAD -- 2>/dev/null; then
+        dirty="-dirty"
+    elif [ -n "$(git -C "$git_dir" ls-files --others --exclude-standard 2>/dev/null)" ]; then
+        dirty="-dirty"
+    fi
+    build_rev="${build_rev}${dirty}"
+fi
+
+cat > "$TARGET_DIR/etc/build-info" << EOF
+Built by: ${build_user}@${build_host}
+Build date: ${build_date}
+Revision: ${build_rev}
+EOF

board/raspberrypi/post-image.sh

@@ -20,6 +20,10 @@ if [ ! -e "${GENIMAGE_CFG}" ]; then
 		FILES+=( "${i#${BINARIES_DIR}/}" )
 	done
 
+	for i in "${BINARIES_DIR}"/*.dtbo; do
+		FILES+=( "${i#${BINARIES_DIR}/}" )
+	done
+
 	FILES+=( "u-boot.bin" )
 	FILES+=( "zImage" )
 	FILES+=( "extlinux/" )

board/raspberrypi/post_build.sh

@@ -1,34 +0,0 @@
-#!/bin/sh
-# post_build.sh - Common post-build script for Raspberry Pi
-#
-# Called by Buildroot after assembling the target rootfs.
-# Arguments:
-#   $1 = path to the target rootfs directory (e.g., output/target)
-#
-# Environment:
-#   BR2_EXTERNAL_RPI_COMMON_PATH = path to this external tree
-#
-# Use this script for:
-#   - Fixing file permissions
-#   - Creating symlinks
-#   - Generating config files that depend on build-time variables
-#   - Stripping unnecessary files from the rootfs
-#
-# Do NOT use this for:
-#   - Installing packages (use rootfs overlay or a package .mk instead)
-#   - Modifying files outside $1
-
-set -e
-
-TARGET_DIR="$1"
-
-# Example: ensure /etc/hostname exists with a default value
-if [ ! -f "${TARGET_DIR}/etc/hostname" ]; then
-    echo "rpi-common" > "${TARGET_DIR}/etc/hostname"
-fi
-
-# Example: remove unnecessary documentation to save space
-rm -rf "${TARGET_DIR}/usr/share/man"
-rm -rf "${TARGET_DIR}/usr/share/doc"
-
-echo ">>> Common post-build script completed"

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_ecdsa_key

@@ -0,0 +1,9 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAaAAAABNlY2RzYS
+1zaGEyLW5pc3RwMjU2AAAACG5pc3RwMjU2AAAAQQSl9RVGjxEE1Z6qDY21KA6tmgLqacnk
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+kAAAAgW9F8JZ52i66TzRFQXijQ9fCZNKoQvYLQNbFsRTtouyYAAAAOcm9vdEBidWlsZHJv
+b3QBAg==
+-----END OPENSSH PRIVATE KEY-----

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_ecdsa_key.pub

@@ -0,0 +1 @@
+ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKX1FUaPEQTVnqoNjbUoDq2aAuppyeS8pzWRKQgP8Rud6821UKyJcWfPf7xJWHA3jQu+wZNgK+m9jWt91sQy5Dk= root@buildroot

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_ed25519_key

@@ -0,0 +1,7 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
+QyNTUxOQAAACBum+4jD3lEmZe0zInr6m0FoTfijCtR3ja59pYjpYVJNwAAAJg/TeMTP03j
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+N+KMK1HeNrn2liOlhUk3AAAADnJvb3RAYnVpbGRyb290AQIDBAUGBw==
+-----END OPENSSH PRIVATE KEY-----

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_ed25519_key.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG6b7iMPeUSZl7TMievqbQWhN+KMK1HeNrn2liOlhUk3 root@buildroot

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_rsa_key

@@ -0,0 +1,38 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
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+koHRF2Enj8XRVxD090SHajiPieOUeHAAAAwQC9Wxb3ln2VDl/OpM/6Nl+QMk5TMpJOw7Tp
+jC03auwIjHI39RDqN95rinlizpziyiEIqvY+Gb0SU4RI5Mg0DKbyDIQ36UVGEPMt4pNA+z
+F8L5DVXbo6eG5KAEZOUIPXmeqCyQEyMWMZ3+stQrMCQEZo70gt/GwpyUTrZkvNsuAZ3bqY
+KzAhFnw1jzXblami8qtE/2htao+hnjJqAKTr8C8bAocfO4isVZxA12Tu3lWBAlA1abuAVA
+xSuIDR9Zm/bWEAAAAOcm9vdEBidWlsZHJvb3QBAgMEBQ==
+-----END OPENSSH PRIVATE KEY-----

board/raspberrypi/rootfs-overlay/etc/ssh/ssh_host_rsa_key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQCpRgSaPyq4pKLSUrHKPOH9zF2dVEo686f+oZIOVWMuMHw858T2AAu+kstMtPVsAcCY+HZHdCbRp1yh1l9UV3GdrpW8eex413wzpf7yHsil2CIbfheVY43Qrw3E34etw8bMqoNBxZpHmZEFtDC18DcdtBHaVycrHYQRM6SgbTG++TeVDL33bP+BREEK6cAvbUcJbaV96w7M8CtJAfy1xKOMHgeOggoaymrg3jBZqJ1VHrdu3jYbAuH+DrNMNPVKYk/61LP4+9FLswPpyHFZgvLswMdE5bd/s92cfwn6ovOOty4gwfd25w14VYfxpDnEMuLP4afUCF9cqf577v1St8YJYzc/v4O+MnILLORCJz07hCXw5rvPSYkk3bDMDK4UVGPgiSvkHZDVXgL50xHFvjGPkhLbM/iUzm/zp8IOCu8LLbBKOUWP6e5wpfPiS4pfS1bWwLHeQbxmiHH7ogzgKTnr8hg0wGbJHbFINL76Mq+gQI4ALshD8r8/WQ21QWPhlSc= root@buildroot

board/raspberrypi/rootfs-overlay/etc/wpa_supplicant.conf

@@ -0,0 +1,4 @@
+network={
+    ssid="Gabriel_2G"
+    psk="gabrielwifi"
+}

board/raspberrypi/rootfs-overlay/lib/mdev/rtl8821cu_usb_modeswitch.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+[ "$ACTION" = "add" ] || exit 0
+usb_modeswitch -v 0bda -p 1a2b -c /usr/share/usb_modeswitch/0bda:1a2b &

board/raspberrypi/rootfs-overlay/lib/mdev/wlan_setup.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+case "$ACTION" in
+    bind)
+        [ -e /sys/class/net/wlan0 ] || exit 0
+        ifdown wlan0 2>/dev/null
+        killall wpa_supplicant 2>/dev/null
+        ifup wlan0
+        ;;
+    remove|unbind)
+        ifdown wlan0 2>/dev/null
+        killall wpa_supplicant 2>/dev/null
+        ;;
+esac

board/raspberrypi/rootfs-overlay/root/.ssh/authorized_keys

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN91vSBSoQ6Xlvohjp6cu4IkL83KKEx//BLgQdvbukHR gabriel@gabriel-a65

board/raspberrypi/uboot-patches/0001-rpi-add-fdtoverlay_addr_r-to-support-DT-overlays.patch

@@ -0,0 +1,10 @@
+--- a/board/raspberrypi/rpi/rpi.env
++++ b/board/raspberrypi/rpi/rpi.env
+@@ -75,6 +75,7 @@
+ scriptaddr=0x05400000
+ pxefile_addr_r=0x05500000
+ fdt_addr_r=0x05600000
++fdtoverlay_addr_r=0x056A0000
+ ramdisk_addr_r=0x05700000
+ 
+ boot_targets=mmc usb pxe dhcp

configs/raspberrypi_common_defconfig

@@ -1,34 +1,56 @@
 BR2_arm=y
 BR2_arm1176jzf_s=y
-BR2_TOOLCHAIN_EXTERNAL=y
-BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV6_EABIHF_GLIBC_STABLE=y
-BR2_GLOBAL_PATCH_DIR="board/raspberrypi/patches"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_12=y
+BR2_BINUTILS_VERSION_2_45_X=y
+BR2_GCC_VERSION_15_X=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_PACKAGE_HOST_GDB=y
+BR2_GDB_VERSION_16=y
 BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
+BR2_ROOTFS_DEVICE_TABLE="system/device_table.txt $(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/device_table.txt"
 BR2_SYSTEM_DHCP="eth0"
-BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypi/post-build.sh"
+BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/rootfs-overlay"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypi/post-build.sh $(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/post-image.sh"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
-BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,21b410140c47ffab5668399f6f143c7d7b935c8b)/linux-21b410140c47ffab5668399f6f143c7d7b935c8b.tar.gz"
-BR2_LINUX_KERNEL_DEFCONFIG="bcmrpi"
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.74"
+BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/linux_defconfig"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
-BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2835-rpi-b-plus broadcom/bcm2708-rpi-b-plus"
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2835-rpi-b-plus broadcom/bcm2835-rpi-zero-w"
+BR2_LINUX_KERNEL_CUSTOM_DTS_DIR="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/dtoverlay/"
+BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT=y
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
-BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_XZ=y
+BR2_PACKAGE_GDB=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI_BT=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI_WIFI=y
+BR2_PACKAGE_LINUX_FIRMWARE=y
+BR2_PACKAGE_LINUX_FIRMWARE_RTL_RTW88=y
 BR2_PACKAGE_RPI_FIRMWARE=y
 BR2_PACKAGE_RPI_FIRMWARE_BOOTCODE_BIN=y
 BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI=y
 BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/config_common.txt"
 BR2_PACKAGE_RPI_FIRMWARE_CMDLINE_FILE="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/cmdline_common.txt"
 # BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTB_OVERLAYS is not set
+BR2_PACKAGE_USB_MODESWITCH_DATA=y
+BR2_PACKAGE_LIBGPIOD2=y
+BR2_PACKAGE_LIBGPIOD2_TOOLS=y
+BR2_PACKAGE_IPERF3=y
+BR2_PACKAGE_OPENSSH=y
+BR2_PACKAGE_WPA_SUPPLICANT=y
+BR2_PACKAGE_WPA_SUPPLICANT_WPA3=y
+BR2_PACKAGE_HTOP=y
 BR2_PACKAGE_KMOD=y
-BR2_PACKAGE_KMOD_TOOLS=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_PATCH="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/uboot-patches/"
 BR2_TARGET_UBOOT_USE_CUSTOM_CONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/uboot_defconfig"
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
@@ -37,3 +59,4 @@ BR2_PACKAGE_HOST_DOSFSTOOLS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_KMOD_XZ=y
 BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_GFXCANVAS=y

package/gfxcanvas/Config.in

@@ -0,0 +1,14 @@
+config BR2_PACKAGE_GFXCANVAS
+	bool "gfxcanvas"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_13
+	help
+	  Small C++ framebuffer graphics application that draws an
+	  info screen (date/time, hostname, network addresses) on a
+	  Linux framebuffer device. Intended for SSD1306-class OLEDs
+	  exposed as /dev/fbN via fbtft.
+
+	  https://git.gmlima.com/Gabriel/GfxCanvas
+
+comment "gfxcanvas needs a toolchain w/ C++, gcc >= 13"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_13

package/gfxcanvas/S99gfxcanvas

@@ -0,0 +1,60 @@
+#!/bin/sh
+#
+# Start gfxcanvas info display
+#
+
+DAEMON="gfxcanvas"
+DAEMON_PATH="/usr/bin/$DAEMON"
+DAEMON_ARGS="/dev/fb1"
+PIDFILE="/var/run/$DAEMON.pid"
+
+start() {
+	printf 'Starting %s: ' "$DAEMON"
+	# shellcheck disable=SC2086
+	start-stop-daemon -S -q -m -b -p "$PIDFILE" \
+		-x "$DAEMON_PATH" -- $DAEMON_ARGS
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+stop() {
+	printf 'Stopping %s: ' "$DAEMON"
+	start-stop-daemon -K -q -p "$PIDFILE"
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		rm -f "$PIDFILE"
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+restart() {
+	stop
+	sleep 1
+	start
+}
+
+case "$1" in
+	start)
+		start
+		;;
+	stop)
+		stop
+		;;
+	restart|reload)
+		restart
+		;;
+	*)
+		echo "Usage: $0 {start|stop|restart}"
+		exit 1
+		;;
+esac
+
+exit $?

package/gfxcanvas/gfxcanvas.mk

@@ -0,0 +1,20 @@
+################################################################################
+#
+# gfxcanvas
+#
+################################################################################
+
+GFXCANVAS_VERSION = 0.2
+GFXCANVAS_SITE = https://git.gmlima.com/Gabriel/GfxCanvas.git
+GFXCANVAS_SITE_METHOD = git
+GFXCANVAS_LICENSE = GPL-3.0
+GFXCANVAS_LICENSE_FILES = LICENSE
+
+GFXCANVAS_CONF_OPTS = -DPROJECT_NAME=gfxcanvas
+
+define GFXCANVAS_INSTALL_INIT_SYSV
+	$(INSTALL) -D -m 0755 $(GFXCANVAS_PKGDIR)/S99gfxcanvas \
+		$(TARGET_DIR)/etc/init.d/S99gfxcanvas
+endef
+
+$(eval $(cmake-package))