configs/pine64_star64: new defconfig

This patch adds a new defconfig for the Star64 board made by
Pine64. This board is based on the Starfive JH7110 RISC-V 64 bits
SoC. See: https://wiki.pine64.org/wiki/STAR64.

This patch uses a custom Kernel and U-Boot made for this board. The
SPL has to be signed with the Starfive SPL-Tool which is a software
provided by the vendor to get the necessary headers on the SPL.

The image configuration is based on the work done by Ivan Velickovic
<i.velickovic@unsw.edu.au>.

Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -2961,6 +2961,8 @@ F:	package/ranger/
 F:	package/x265/
 
 N:	Thomas Bonnefille <thomas.bonnefille@bootlin.com>
+F:	board/pine64/star64
+F:	configs/pine64_star64_defconfig
 F:	package/starfive-spltool/
 
 N:	Thomas Claveirole <thomas.claveirole@green-communications.fr>

board/pine64/star64/genimage.cfg

@@ -0,0 +1,24 @@
+# SD card image for the Pine64 Star64 board
+
+image sdcard.img {
+        hdimage {
+                partition-table-type = "gpt"
+        }
+
+        partition spl {
+                image = "u-boot-spl.bin.normal.out"
+                partition-type-uuid = 2E54B353-1271-4842-806F-E436D6AF6985
+                offset = 2M
+        }
+
+        partition uboot {
+                image = "opensbi_uboot_payload.img"
+                partition-type-uuid = 5B193300-FC78-40CD-8002-E86C45580B47
+                offset = 4M
+        }
+
+        partition rootfs {
+                image = "rootfs.ext4"
+                bootable = true
+        }
+}

board/pine64/star64/overlay/boot/extlinux/extlinux.conf

@@ -0,0 +1,4 @@
+label star64
+  kernel /boot/Image
+  devicetree /boot/jh7110-pine64-star64.dtb
+  append root=/dev/mmcblk1p3 earlycon=sbi

board/pine64/star64/post-build.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+BOARD_DIR="$CONFIG_DIR"/board/pine64/star64
+
+# Add header to the SPL
+"$HOST_DIR"/bin/spl_tool -c -f "$BINARIES_DIR"/u-boot-spl.bin
+
+# Create the u-boot FIT image
+cp "$BOARD_DIR"/star64-uboot-fit-image.its "$BINARIES_DIR"
+mkimage -f "$BINARIES_DIR"/star64-uboot-fit-image.its -A riscv -O u-boot -T firmware "$BINARIES_DIR"/opensbi_uboot_payload.img

board/pine64/star64/readme.txt

@@ -0,0 +1,32 @@
+Pine64 Star64
+=============
+
+The Star64 is a low-cost RISC-V 64-bit based platform, powered by a
+Starfive JH7110 processor.
+
+https://wiki.pine64.org/wiki/STAR64
+
+How to build
+============
+
+$ make pine64_star64_defconfig
+$ make
+
+How to write the SD card
+========================
+
+Once the build process is finished you will have an image called "sdcard.img"
+in the output/images/ directory.
+
+Copy the bootable "sdcard.img" onto an SD card with "dd":
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/sdX conv=fdatasync
+
+Preparing the board
+===================
+
+Connect a TTL UART cable to pin 6 (GND), 8 (TX) and 10 (RX).
+
+Insert your SD card.
+
+Power-up the board using a 12V power supply.

board/pine64/star64/star64-uboot-fit-image.its

@@ -0,0 +1,29 @@
+/dts-v1/;
+
+/ {
+	description = "U-boot-spl FIT image for JH7110 Pine64 Star64";
+	#address-cells = <2>;
+
+	images {
+		firmware {
+			description = "u-boot";
+			data = /incbin/("fw_payload.bin");
+			type = "firmware";
+			arch = "riscv";
+			os = "u-boot";
+			load = <0x0 0x40000000>;
+			entry = <0x0 0x40000000>;
+			compression = "none";
+		};
+	};
+
+	configurations {
+		default = "config-1";
+
+		config-1 {
+			description = "U-boot-spl FIT config for JH7110 Pine64 Star64";
+			firmware = "firmware";
+		};
+	};
+};
+

configs/pine64_star64_defconfig

@@ -0,0 +1,40 @@
+BR2_riscv=y
+
+# Linux headers same as kernel, a 5.15 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
+
+# Kernel configuration
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,Fishwaldo,Star64_linux,1456c984f15e21e28fb8a9ce96d0ca10e61a71c4)/linux-1456c984f15e21e28fb8a9ce96d0ca10e61a71c4.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="pine64_star64"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="starfive/jh7110-pine64-star64"
+BR2_LINUX_KERNEL_INSTALL_TARGET=y
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+
+# OpenSBI configuration
+BR2_TARGET_OPENSBI=y
+BR2_TARGET_OPENSBI_UBOOT_PAYLOAD=y
+BR2_TARGET_OPENSBI_PLAT="generic"
+
+# U-Boot configuration
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
+BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="$(call github,Fishwaldo,u-boot,172b47f62039605d6806fa96bd403c21cda28996)/u-boot-172b47f62039605d6806fa96bd403c21cda28996.tar.gz"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="pine64_star64"
+BR2_TARGET_UBOOT_SPL=y
+
+# Misc
+BR2_ROOTFS_OVERLAY="board/pine64/star64/overlay/"
+BR2_PACKAGE_HOST_STARFIVE_SPLTOOL=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="100M"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/pine64/star64/genimage.cfg"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/pine64/star64/post-build.sh"
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_FIT_SUPPORT=y