configs/rock5b: new defconfig

This patch adds the defconfig file needed to build u-boot, kernel
and rootfs for the Rock 5B. In addition it adds a kernel config
fragment file, which activates the needed ethernet driver support.
It also adds a readme and post image scripts, needed to generate an
sdcard.img file, which can be flashed on an SD card to boot the
Radxa Rock 5B.

Signed-off-by: Kilian Zinnecker <kilian.zinnecker@mail.de>
[yann.morin.1998@free.fr:
  - drop custom version
  - fix shellcheck in post-image script
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

DEVELOPERS

@@ -1805,6 +1805,8 @@ F:	package/libcamera/
 
 N:	Kilian Zinnecker <kilian.zinnecker@mail.de>
 F:	package/rockchip-rkbin/
+F:	configs/rock5b_defconfig
+F:	board/radxa/rock5b/
 
 N:	Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
 F:	package/wqy-zenhei/

board/radxa/rock5b/boot.cmd

@@ -0,0 +1,3 @@
+setenv bootargs root=/dev/mmcblk0p2 rw rootfstype=ext4 clkin_hz=(25000000) earlycon clk_ignore_unused earlyprintk console=ttyS2,1500000n8 rootwait
+fatload mmc 1:1 ${loadaddr} image.itb
+bootm ${loadaddr}

board/radxa/rock5b/genimage.cfg

@@ -0,0 +1,34 @@
+# SD card image for Radxa Rock 5b
+
+image boot.vfat {
+	vfat {
+		files = {
+			"image.itb",
+			"boot.scr"
+		}
+	}
+	size = 16M
+}
+
+image sdcard.img {
+	hdimage {
+		partition-table-type = "hybrid"
+	}
+
+	partition uboot {
+		in-partition-table = "false"
+		image = "u-boot-rockchip.bin"
+		offset = 32K
+	}
+
+	partition boot {
+		partition-type = "0xC"
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext2"
+	}
+}

board/radxa/rock5b/linux.fragment

@@ -0,0 +1 @@
+CONFIG_R8169=y

board/radxa/rock5b/post-image.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -e
+
+gzip -fk "${BINARIES_DIR}/Image"
+cp board/radxa/rock5b/rock5b.its "${BINARIES_DIR}"
+(cd "${BINARIES_DIR}" && mkimage -f rock5b.its image.itb)
+support/scripts/genimage.sh -c board/radxa/rock5b/genimage.cfg

board/radxa/rock5b/readme.txt

@@ -0,0 +1,62 @@
+RADXA ROCK 5B
+==============
+https://wiki.radxa.com/Rock5/hardware/5b
+
+Build:
+======
+  $ make rock5b_defconfig
+  $ make
+
+Files created in output directory
+=================================
+
+output/images
+.
+├── Image
+├── Image.gz
+├── boot.scr
+├── boot.vfat
+├── image.itb
+├── rk3588-rock-5b.dtb
+├── rk3588_bl31_v1.40.elf
+├── rk3588_ddr_lp4_2112MHz_lp5_2736MHz_v1.12.bin
+├── rock5b.its
+├── rootfs.ext2
+├── rootfs.ext4
+├── rootfs.tar
+├── sdcard.img
+├── u-boot-rockchip.bin
+└── u-boot.bin
+
+Creating bootable SD card:
+==========================
+
+Simply invoke (as root)
+
+sudo dd if=output/images/sdcard.img of=/dev/sdX && sync
+
+Where X is your SD card device.
+
+Booting:
+========
+
+Serial console:
+---------------
+The Rock 5B has a 40-pin GPIO header. Its layout can be seen here:
+https://wiki.radxa.com/Rock5/hardware/5b/gpio
+
+The Uart pins are as follows:
+
+pin 6:  gnd
+pin 8:  tx
+pin 10: rx
+
+Baudrate for this board is 1500000.
+
+Login:
+------
+Enter 'root' as login user, and the prompt is ready.
+
+wiki link:
+----------
+https://forum.radxa.com/c/rock5

board/radxa/rock5b/rock5b.its

@@ -0,0 +1,46 @@
+/dts-v1/;
+
+/ {
+	description = "Rock 5B FIT Image";
+	#address-cells = <1>;
+
+	images {
+		kernel {
+			description = "Kernel";
+			data = /incbin/("Image.gz");
+			type = "kernel";
+			arch = "arm64";
+			os = "linux";
+			compression = "gzip";
+			load = <0x0a200000>;
+			entry = <0x0a200000>;
+			hash {
+				algo = "sha256";
+			};
+		};
+		fdt {
+			description = "Device Tree";
+			data = /incbin/("rk3588-rock-5b.dtb");
+			type = "flat_dt";
+			arch = "arm64";
+			compression = "none";
+			load = <0x0e000000>;
+			entry = <0x0e000000>;
+			hash {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "standard";
+		standard {
+			description = "Standard Boot";
+			kernel = "kernel";
+			fdt = "fdt";
+			hash {
+				algo = "sha256";
+			};
+		};
+	};
+};

configs/rock5b_defconfig

@@ -0,0 +1,40 @@
+BR2_aarch64=y
+BR2_cortex_a76_a55=y
+BR2_KERNEL_HEADERS_5_10=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/radxa/rock5b/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS=""
+BR2_TARGET_GENERIC_HOSTNAME="rock5b"
+BR2_TARGET_GENERIC_ISSUE="Welcome to the rock5b board"
+BR2_SYSTEM_DHCP="eth0"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_GIT=y
+BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/radxa/kernel.git"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="52f51a2b5ba178f331af62260d2da86d7472c14b"
+BR2_LINUX_KERNEL_DEFCONFIG="rockchip_linux"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="rockchip/rk3588-rock-5b"
+BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT=y
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/radxa/rock5b/linux.fragment"
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="250M"
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.07"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="rock5b-rk3588"
+BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
+BR2_TARGET_UBOOT_NEEDS_PYELFTOOLS=y
+BR2_TARGET_UBOOT_NEEDS_ROCKCHIP_RKBIN=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_FIT_SUPPORT=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="board/radxa/rock5b/boot.cmd"
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_DTC=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_PACKAGE_ROCKCHIP_RKBIN=y
+BR2_PACKAGE_ROCKCHIP_RKBIN_TPL_FILENAME="bin/rk35/rk3588_ddr_lp4_2112MHz_lp5_2736MHz_v1.12.bin"
+BR2_PACKAGE_ROCKCHIP_RKBIN_BL31_FILENAME="bin/rk35/rk3588_bl31_v1.40.elf"