configs: add raspberrypi 5 defconfig

This configuration builds an image for the RaspberryPi 5.

Cc: Adam Duskett <adam.duskett@amarulasolutions.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Gaël PORTAY <gael.portay@rtone.fr>
[yann.morin.1998@free.fr: check hashes]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

board/raspberrypi/cmdline_5.txt

@@ -0,0 +1 @@
+root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyAMA10,115200

board/raspberrypi/config_5.txt

@@ -0,0 +1,14 @@
+# 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
+
+kernel=Image
+
+# To use an external initramfs file
+#initramfs rootfs.cpio.gz
+
+# 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

board/raspberrypi/linux-4k-page-size.fragment

@@ -0,0 +1 @@
+CONFIG_ARM64_4K_PAGES=y

board/raspberrypi/readme.txt

@@ -10,6 +10,7 @@ These instructions apply to all models of the Raspberry Pi:
   - the model B3 (aka Raspberry Pi 3).
   - the model B4 (aka Raspberry Pi 4).
   - the model CM4 (aka Raspberry Pi Compute Module 4 and IO Board).
+  - the model B5 (aka Raspberry Pi 5).
 
 How to build it
 ===============
@@ -64,6 +65,10 @@ or for CM4 (on IO Board - 64 bit):
 
   $ make raspberrypicm4io_64_defconfig
 
+For model 5 B:
+
+  $ make raspberrypi5_defconfig
+
 Build the rootfs
 ----------------
 
@@ -94,6 +99,7 @@ After building, you should obtain this tree:
     +-- bcm2710-rpi-cm3.dtb         [1]
     +-- bcm2711-rpi-4-b.dtb         [1]
     +-- bcm2711-rpi-cm4.dtb         [1]
+    +-- bcm2712-rpi-5-b.dtb         [1]
     +-- bcm2837-rpi-3-b.dtb         [1]
     +-- boot.vfat
     +-- rootfs.ext4

board/raspberrypi5

@@ -0,0 +1 @@
+raspberrypi

configs/raspberrypi5_defconfig

@@ -0,0 +1,50 @@
+BR2_aarch64=y
+BR2_cortex_a76_a55=y
+BR2_ARM_FPU_VFPV4=y
+
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+
+BR2_SYSTEM_DHCP="eth0"
+
+# Linux headers same as kernel, a 6.1 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_1=y
+
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/raspberrypi/linux-4k-page-size.fragment"
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,17f135b742c4edb340afb365873c3a574f7e16cb)/linux-17f135b742c4edb340afb365873c3a574f7e16cb.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="bcm2712"
+
+# Build the DTB from the kernel sources
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2712-rpi-5-b"
+
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+
+BR2_PACKAGE_RPI_FIRMWARE=y
+BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="board/raspberrypi5/config_5.txt"
+BR2_PACKAGE_RPI_FIRMWARE_CMDLINE_FILE="board/raspberrypi5/cmdline_5.txt"
+# BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTB_OVERLAYS is not set
+
+# Required tools to create the SD image
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
+
+# Filesystem / image
+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_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypi5/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypi5/post-image.sh"
+
+# Enable compressed kernel module support
+BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+BR2_PACKAGE_KMOD_TOOLS=y
+BR2_PACKAGE_XZ=y
+BR2_PACKAGE_KMOD=y
+BR2_PACKAGE_HOST_KMOD_XZ=y
+
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_GLOBAL_PATCH_DIR="board/raspberrypi5/patches"