WIP: Raspberry Pi 5 support

This commit implements a first basicly working Raspberry Pi 5 support
which is able to boot into the main RaspberryMatic system and seems to
work as expected with the following exceptions/todo:

1. No U-boot bootloader: due to no bcm2712/pi5 support in the upstream
   U-Boot sources, there is currently also no u-boot support like with
   the other rpi platforms/boards. That means, there is currently no
   possibility to boot into the recovery system, thus no way to update
   this system via standard update packages/procedures.
2. No framebuffer console: due to the missing u-boot support and also
   potentially due to the stripped down kernel configs there is
   currently no framebuffer console available for direct login via a HDMI
   connected monitor.
3. High carrier sense with RPI-RF-MOD@GPIO: Unfortunately, it
   seems that a RPI-RF-MOD rf module directly connected to the GPIO
   of a Raspberry Pi 5 does exhibit quite a high CarrierSense (> 80%)
   due to massive RF interferences. More analyses and work seems to be
   required to try to reduce this, thought.

buildroot-external/board/rpi5/boot.cmd

@@ -0,0 +1,58 @@
+# modify bootargs, load kernel and boot it
+# fallback defaults
+setenv load_addr ${ramdisk_addr_r}
+setenv console "tty2"
+setenv loglevel "0"
+setenv bootfs 1
+setenv rootfs 2
+setenv userfs 3
+setenv gpio_button "GPIO12"
+setenv kernel_img "Image"
+setenv recoveryfs_initrd "recoveryfs-initrd"
+setenv usbstoragequirks "174c:55aa:u,2109:0715:u,152d:0578:u,152d:0579:u,152d:1561:u,174c:0829:u,14b0:0206:u,174c:225c:u"
+
+# output where we are booting from
+itest.b ${devnum} == 0 && echo "U-boot loaded from SD"
+itest.b ${devnum} == 1 && echo "U-boot loaded from eMMC"
+
+# import environment from /boot/bootEnv.txt
+if test -e ${devtype} ${devnum}:${bootfs} bootEnv.txt; then
+  load ${devtype} ${devnum}:${bootfs} ${load_addr} bootEnv.txt
+  env import -t ${load_addr} ${filesize}
+fi
+
+# test if the gpio button is 0 (pressed) or if .recoveryMode exists in userfs
+# or if Image doesn't exist in the root partition
+gpio input ${gpio_button}
+if test $? -eq 0 -o -e ${devtype} ${devnum}:${userfs} /.recoveryMode -o ! -e ${devtype} ${devnum}:${rootfs} ${kernel_img}; then
+  echo "==== STARTING RECOVERY SYSTEM ===="
+  # load the initrd file
+  load ${devtype} ${devnum}:${bootfs} ${load_addr} ${recoveryfs_initrd}
+  setenv rootfs_str "/dev/ram0"
+  setenv initrd_addr_r ${load_addr}
+  setenv kernel_img "recoveryfs-Image"
+  setenv kernelfs ${bootfs}
+else
+  echo "==== NORMAL BOOT ===="
+  # get partuuid of root_num
+  part uuid ${devtype} ${devnum}:${rootfs} partuuid
+  setenv rootfs_str "PARTUUID=${partuuid}"
+  setenv initrd_addr_r "-"
+  setenv kernelfs ${rootfs}
+fi
+
+# load devicetree
+fdt addr ${fdt_addr}
+fdt get value bootargs /chosen bootargs
+
+# set bootargs
+setenv bootargs "dwc_otg.lpm_enable=0 sdhci_bcm2708.enable_llm=0 console=${console} root=${rootfs_str} ro rootfstype=ext4 fsck.repair=yes rootwait rootdelay=5 consoleblank=120 logo.nologo quiet loglevel=${loglevel} init_on_alloc=1 init_on_free=1 slab_nomerge iomem=relaxed net.ifnames=0 usb-storage.quirks=${usbstoragequirks} ${extraargs} ${bootargs}"
+
+# load kernel
+load ${devtype} ${devnum}:${kernelfs} ${kernel_addr_r} ${kernel_img}
+
+# boot kernel
+booti ${kernel_addr_r} ${initrd_addr_r} ${fdt_addr}
+
+echo "Boot failed, resetting..."
+reset

buildroot-external/board/rpi5/cmdline.txt

@@ -0,0 +1 @@
+dwc_otg.lpm_enable=0 sdhci_bcm2708.enable_llm=0 console=tty2 root=PARTUUID=deedbeef-02 ro rootfstype=ext4 fsck.repair=yes rootwait rootdelay=5 consoleblank=120 logo.nologo quiet loglevel=0 init_on_alloc=1 init_on_free=1 slab_nomerge iomem=relaxed net.ifnames=0

buildroot-external/board/rpi5/config.txt

@@ -0,0 +1,67 @@
+# enable aarch64 bit support
+arm_64bit=1
+
+# disable HDMI port on blanking
+hdmi_blanking=1
+
+# disable HDMI audio
+hdmi_drive=1
+
+# pretend hdmi is connected so that the system
+# starts booting even if the system is headless
+hdmi_force_hotplug=1
+
+# make sure to use less memory for the GPU and
+# all total memory available
+gpu_mem=32
+
+# Disable overscan assuming the display supports displaying the full resolution
+# If the text shown on the screen disappears off the edge, comment this out
+disable_overscan=1
+
+# enable i2c and spi
+dtparam=i2c_arm=on
+dtparam=i2c1=on
+dtparam=spi=on
+
+# enable the UART
+enable_uart=1
+
+# switch the bluetooth UART to the miniuart
+# for basic bluetooth support
+dtoverlay=miniuart-bt
+
+# for disabling bluetooth alltogether
+# you can uncomment the following two lines
+#dtoverlay=disable-bt
+#dtparam=uart1=off
+
+# disable the splash screen
+disable_splash=1
+
+# activating the hardware watchdog
+dtparam=watchdog=on
+
+# Uncomment to disable continous SD-card poll (for USB SSD)
+#dtparam=sd_poll_once=on
+
+# start with heartbeat on PWR led and mmc0 on ACT led
+dtparam=pwr_led_trigger=timer,act_led_trigger=mmc0
+
+# add device tree overlay for RPI-RF-MOD
+dtoverlay=rpi-rf-mod
+
+# make sure gpio12 is set as input and pull_up
+gpio=12=ip,pu
+
+# use fixed names for start.elf/fixup.dat
+start_file=start.elf
+fixup_file=fixup.dat
+
+# lets u-boot take over the boot process
+#kernel=u-boot.bin
+kernel=Image
+
+# user config options shoule be put in
+# /boot/extraconfig.txt
+include extraconfig.txt

buildroot-external/board/rpi5/genimage.cfg

@@ -0,0 +1,56 @@
+image boot.vfat {
+  vfat {
+    extraargs = "-n bootfs"
+
+    files = {
+      "VERSION",
+      "bcm2712-rpi-5-b.dtb",
+      "cmdline.txt",
+      "config.txt",
+      "rpi-firmware/overlays",
+      "rpi-eeprom/pieeprom.upd",
+      "rpi-eeprom/pieeprom.sig",
+      "u-boot.bin",
+      "recoveryfs-initrd",
+      "recoveryfs-Image",
+      "boot.scr",
+      "Image"
+    }
+
+    file fixup.dat {
+      image = "rpi-firmware/fixup4.dat"
+    }
+
+    file start.elf {
+      image = "rpi-firmware/start4.elf"
+    }
+
+    file overlays/rpi-rf-mod.dtbo {
+      image = "rpi-rf-mod.dtbo"
+    }
+  }
+  size = 256M
+}
+
+image sdcard.img {
+  hdimage {
+    disk-signature = 0xDEEDBEEF
+    partition-table-type = "mbr"
+  }
+
+  partition boot {
+    partition-type = 0xC
+    bootable = "true"
+    image = "boot.vfat"
+  }
+
+  partition rootfs {
+    partition-type = 0x83
+    image = "rootfs.ext4"
+  }
+
+  partition userfs {
+    partition-type = 0x83
+    image = "userfs.ext4"
+  }
+}

buildroot-external/board/rpi5/kernel-patches

@@ -0,0 +1 @@
+../rpi4/kernel-patches

buildroot-external/board/rpi5/kernel.config

@@ -0,0 +1,23 @@
+# disable old framebuffer for video display to work
+# CONFIG_FB_BCM2708 is not set
+
+# disable sound
+# CONFIG_SND_BCM2835 is not set
+
+# disable video camera support
+# CONFIG_VIDEO_BCM2835_UNICAM is not set
+
+# disable touchscreen
+# CONFIG_REGULATOR_RASPBERRYPI_TOUCHSCREEN_ATTINY is not set
+
+# enable mmc support
+CONFIG_MMC_BCM2835=y
+
+# use pl011 serial as a kernel module and
+# disable serial console on amba
+CONFIG_SERIAL_AMBA_PL011=m
+# CONFIG_SERIAL_AMBA_PL011_CONSOLE is not set
+
+# nvme support
+CONFIG_NVME_CORE=y
+CONFIG_BLK_DEV_NVME=y

buildroot-external/board/rpi5/post-build.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Stop on error
+set -e
+
+# copy the kernel image to rootfs
+cp -a "${BINARIES_DIR}/Image" "${TARGET_DIR}/"
+
+# create VERSION file
+echo "VERSION=${PRODUCT_VERSION}" >"${TARGET_DIR}/VERSION"
+echo "PRODUCT=${PRODUCT}" >>"${TARGET_DIR}/VERSION"
+echo "PLATFORM=rpi5" >>"${TARGET_DIR}/VERSION"
+
+# fix some permissions
+[ -e "${TARGET_DIR}/etc/monitrc" ] && chmod 600 "${TARGET_DIR}/etc/monitrc"
+
+# link VERSION in /boot on rootfs
+mkdir -p "${TARGET_DIR}/boot"
+ln -sf ../VERSION "${TARGET_DIR}/boot/VERSION"

buildroot-external/board/rpi5/post-image.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Stop on error
+set -e
+
+BOARD_DIR="$(dirname "$0")"
+BOARD_NAME="$(basename "${BOARD_DIR}")"
+
+# Use our own cmdline.txt+config.txt
+cp "${BR2_EXTERNAL_EQ3_PATH}/board/${BOARD_NAME}/cmdline.txt" "${BINARIES_DIR}/"
+cp "${BR2_EXTERNAL_EQ3_PATH}/board/${BOARD_NAME}/config.txt" "${BINARIES_DIR}/"
+
+#
+# Create user filesystem
+#
+echo "Create user filesystem"
+mkdir -p "${BUILD_DIR}/userfs"
+touch "${BUILD_DIR}/userfs/.doFactoryReset"
+rm -f "${BINARIES_DIR}/userfs.ext4"
+"${HOST_DIR}/sbin/mkfs.ext4" -d "${BUILD_DIR}/userfs" -F -L userfs -I 256 -E lazy_itable_init=0,lazy_journal_init=0 "${BINARIES_DIR}/userfs.ext4" 3000
+
+#
+# VERSION File
+#
+cp "${TARGET_DIR}/boot/VERSION" "${BINARIES_DIR}"
+
+# create *.img file using genimage
+support/scripts/genimage.sh -c "${BR2_EXTERNAL_EQ3_PATH}/board/${BOARD_NAME}/genimage.cfg"

buildroot-external/board/rpi5/post-release.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Stop on error
+set -e
+
+#BOARD_DIR=${1}
+PRODUCT=${2}
+PRODUCT_VERSION=${3}
+BOARD=$(echo "${PRODUCT}" | cut -d'_' -f2-)
+
+# change into release dir
+cd ./release
+
+# copy the *.img and create checksum
+cp -a "../build-${PRODUCT}/images/sdcard.img" "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img"
+sha256sum "RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img" >"RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img.sha256"
+
+# prepare the release *.zip
+rm -f "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip"
+zip --junk-paths "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip" "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img" "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img.sha256" ../LICENSE "./updatepkg/${PRODUCT}/EULA.de" "./updatepkg/${PRODUCT}/EULA.en"
+sha256sum "RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip" >"RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip.sha256"
+
+# create manifest file with checksum+sizes
+rm -f "RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.mf"
+
+# shellcheck disable=SC2129
+echo "$(stat -c %s "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img") $(cat "RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.img.sha256")" >>"RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.mf"
+echo "$(stat -c %s "./RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip") $(cat "RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.zip.sha256")" >>"RaspberryMatic-${PRODUCT_VERSION}-${BOARD}.mf"

buildroot-external/board/rpi5/uboot-patches/0001-rpi-Use-CONFIG_OF_BOARD-instead-of-CONFIG_EMBED.patch

@@ -0,0 +1,83 @@
+From 01b4d231cbb66ca193ba422a22d25c75d21ff8ee Mon Sep 17 00:00:00 2001
+Message-Id: <01b4d231cbb66ca193ba422a22d25c75d21ff8ee.1682350496.git.stefan@agner.ch>
+From: Pascal Vizeli <[email protected]>
+Date: Tue, 10 Dec 2019 09:48:46 +0000
+Subject: [PATCH] rpi: Use CONFIG_OF_BOARD instead of CONFIG_EMBED
+
+Signed-off-by: Pascal Vizeli <[email protected]>
+---
+ configs/rpi_0_w_defconfig   | 2 +-
+ configs/rpi_2_defconfig     | 2 +-
+ configs/rpi_3_32b_defconfig | 2 +-
+ configs/rpi_3_defconfig     | 2 +-
+ configs/rpi_defconfig       | 2 +-
+ 5 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/configs/rpi_0_w_defconfig b/configs/rpi_0_w_defconfig
+index baa8c37810..f20aa164e5 100644
+--- a/configs/rpi_0_w_defconfig
++++ b/configs/rpi_0_w_defconfig
+@@ -23,7 +23,7 @@ CONFIG_CMD_GPIO=y
+ CONFIG_CMD_MMC=y
+ CONFIG_CMD_USB=y
+ CONFIG_CMD_FS_UUID=y
+-CONFIG_OF_EMBED=y
++CONFIG_OF_BOARD=y
+ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+diff --git a/configs/rpi_2_defconfig b/configs/rpi_2_defconfig
+index baae6d4871..60987ad91a 100644
+--- a/configs/rpi_2_defconfig
++++ b/configs/rpi_2_defconfig
+@@ -24,7 +24,7 @@ CONFIG_CMD_GPIO=y
+ CONFIG_CMD_MMC=y
+ CONFIG_CMD_USB=y
+ CONFIG_CMD_FS_UUID=y
+-CONFIG_OF_EMBED=y
++CONFIG_OF_BOARD=y
+ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+diff --git a/configs/rpi_3_32b_defconfig b/configs/rpi_3_32b_defconfig
+index f51f3de596..e6de8669d0 100644
+--- a/configs/rpi_3_32b_defconfig
++++ b/configs/rpi_3_32b_defconfig
+@@ -23,7 +23,7 @@ CONFIG_CMD_GPIO=y
+ CONFIG_CMD_MMC=y
+ CONFIG_CMD_USB=y
+ CONFIG_CMD_FS_UUID=y
+-CONFIG_OF_EMBED=y
++CONFIG_OF_BOARD=y
+ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+diff --git a/configs/rpi_3_defconfig b/configs/rpi_3_defconfig
+index bc1a318db4..70f4f8ed70 100644
+--- a/configs/rpi_3_defconfig
++++ b/configs/rpi_3_defconfig
+@@ -22,7 +22,7 @@ CONFIG_CMD_GPIO=y
+ CONFIG_CMD_MMC=y
+ CONFIG_CMD_USB=y
+ CONFIG_CMD_FS_UUID=y
+-CONFIG_OF_EMBED=y
++CONFIG_OF_BOARD=y
+ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+diff --git a/configs/rpi_defconfig b/configs/rpi_defconfig
+index 1d356b4b2e..6f345c790b 100644
+--- a/configs/rpi_defconfig
++++ b/configs/rpi_defconfig
+@@ -23,7 +23,7 @@ CONFIG_CMD_GPIO=y
+ CONFIG_CMD_MMC=y
+ CONFIG_CMD_USB=y
+ CONFIG_CMD_FS_UUID=y
+-CONFIG_OF_EMBED=y
++CONFIG_OF_BOARD=y
+ CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+-- 
+2.40.0
+