[Buildroot] [PATCH v3 1/2] configs/aspeed_ast2600evb: new defconfig

* [Buildroot] [PATCH v3 1/2] configs/aspeed_ast2600evb: new defconfig
@ 2022-06-21 20:34 Cédric Le Goater
  2022-06-21 20:34 ` [Buildroot] [PATCH v3 2/2] configs/aspeed_ast2500evb: " Cédric Le Goater
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Cédric Le Goater @ 2022-06-21 20:34 UTC (permalink / raw)
  To: buildroot; +Cc: chin-ting_kuo, troy_lee, Joel Stanley, Cédric Le Goater

The kernel is from upstream and U-Boot is from the OpenBMC branch
because mainline doesn't have the required support for HW, yet.

The main resulting file from the build is a flash image. The partition
layout matches the OpenBMC one for 64M chips. It makes it easier to
update the different partitions from Linux. Intermediate files can be
used to boot from U-boot over the network or to boot QEMU using
-kernel/-initrd/-dtb.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---

 Changes in v3:

 - defconfig cleanup

 Changes in v2:

 - Add Joel to the list of developers
 - Removed unused CONFIG from linux.fragment but added
   CONFIG_I2C_SLAVE_EEPROM which is useful for tests
 - minor cleanups in readme.txt

 DEVELOPERS                             |  4 ++
 board/aspeed/ast2600-evb/genimage.cfg  | 40 +++++++++++++
 board/aspeed/ast2600-evb/readme.txt    | 80 ++++++++++++++++++++++++++
 board/aspeed/common/image.its.template | 56 ++++++++++++++++++
 board/aspeed/common/post-image.sh      | 27 +++++++++
 configs/aspeed_ast2600evb_defconfig    | 44 ++++++++++++++
 6 files changed, 251 insertions(+)
 create mode 100644 board/aspeed/ast2600-evb/genimage.cfg
 create mode 100644 board/aspeed/ast2600-evb/readme.txt
 create mode 100644 board/aspeed/common/image.its.template
 create mode 100755 board/aspeed/common/post-image.sh
 create mode 100644 configs/aspeed_ast2600evb_defconfig

diff --git a/DEVELOPERS b/DEVELOPERS
index aa18de83bcb6..0a09b8b5607c 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -501,8 +501,10 @@ F:	package/znc/
 N:	Cédric Le Goater <clg@kaod.org>
 F:	board/qemu/ppc-bamboo/
 F:	board/qemu/ppc64le-powernv8/readme.txt
+F:	board/aspeed/
 F:	configs/qemu_ppc_bamboo_defconfig
 F:	configs/qemu_ppc64le_powernv8_defconfig
+F:	configs/aspeed*
 
 N:	Charles Hardin <ckhardin@gmail.com>
 F:	package/alsa-plugins/
@@ -1451,6 +1453,8 @@ F:	board/qemu/ppc64le-pseries/
 F:	configs/qemu_ppc64le_pseries_defconfig
 F:	board/qemu/ppc-mac99/
 F:	configs/qemu_ppc_mac99_defconfig
+F:	board/aspeed/
+F:	configs/aspeed*
 
 N:	Johan Derycke <johanderycke@gmail.com>
 F:	package/python-libconfig/
diff --git a/board/aspeed/ast2600-evb/genimage.cfg b/board/aspeed/ast2600-evb/genimage.cfg
new file mode 100644
index 000000000000..56932d478756
--- /dev/null
+++ b/board/aspeed/ast2600-evb/genimage.cfg
@@ -0,0 +1,40 @@
+#
+# This config reproduces the OpenBMC flash layout defined in Linux :
+#
+#    arch/arm/boot/dts/openbmc-flash-layout-64.dtsi
+#
+# and included by aspeed-ast2600-evb.dts
+#
+flash nor-64M-256 {
+	pebsize = 4K
+	numpebs = 16K
+	minimum-io-unit-size = 256
+}
+
+image flash.img {
+	flash {
+	}
+	flashtype = "nor-64M-256"
+
+	partition uboot {
+		image = "u-boot.bin"
+		size = 896K
+	}
+
+	partition ubootenv {
+		/* TODO */
+		offset = 896K
+		size = 128K
+	}
+
+	partition fitimage {
+		image = "image.itb"
+		offset = 1M
+		size = 9M
+	}
+
+	partition spare {
+		offset = 10M
+		size = 54M
+	}
+}
diff --git a/board/aspeed/ast2600-evb/readme.txt b/board/aspeed/ast2600-evb/readme.txt
new file mode 100644
index 000000000000..1f7ba13d5d97
--- /dev/null
+++ b/board/aspeed/ast2600-evb/readme.txt
@@ -0,0 +1,80 @@
+Aspeed AST2600 EVB
+
+Introduction
+============
+
+The AST2600 EVB is an evaluation board for the AST2600 SoC, most
+commonly used as a Server Management Processor. It includes a
+Dual-core ARM Cortex A7 processor with DDR4 SDRAM (up to 2GB), SPI
+flash memory devices for BMC and host firmwares and numerous
+controllers to drive the server board.
+
+  https://www.aspeedtech.com/server_ast2600/
+
+How to build it
+===============
+
+Configure buildroot:
+
+  $ make aspeed_ast2600evb_defconfig
+
+Compile everything and build the rootfs image:
+
+  $ make
+
+Result of the build
+===================
+
+After building, the output/images directory contains:
+
+  output/images/
+    ├── aspeed-ast2600-evb.dtb
+    ├── flash.img
+    ├── image.itb
+    ├── rootfs.cpio
+    ├── rootfs.cpio.xz
+    ├── rootfs.tar
+    ├── u-boot.bin
+    └── zImage
+
+Flashing the image
+==================
+
+To update the contents of the first flash device, copy flash.img :
+
+  $ flashcp flash.img /dev/mtd0
+
+or simply the boot loader:
+
+  $ flashcp u-boot.bin /dev/mtd1
+
+Preparing the board
+===================
+
+ * Connect a serial line to the board
+ * Power-up the board
+
+Booting the board
+=================
+
+The AST2600 EVB boots from the SPI flash device directly and loads a
+first bootloader (usually U-Boot). U-Boot will attempt to load a Linux
+kernel from the same flash device by default but other storage could
+be used.
+
+ * from U-Boot
+
+   The FIT image image.itb can be used to boot the board from U-Boot
+   using tftp
+
+ * with QEMU
+
+   $ qemu-system-arm -M ast2600-evb \
+	-drive file=output/images/flash.img,format=raw,if=mtd \
+	-nographic
+
+   $ qemu-system-arm -M ast2600-evb \
+	-kernel output/images/zImage \
+	-initrd output/images/rootfs.cpio \
+	-dtb output/images/aspeed-ast2600-evb.dtb \
+	-nographic
diff --git a/board/aspeed/common/image.its.template b/board/aspeed/common/image.its.template
new file mode 100644
index 000000000000..e3200e240709
--- /dev/null
+++ b/board/aspeed/common/image.its.template
@@ -0,0 +1,56 @@
+/dts-v1/;
+
+/ {
+	description = "Kernel and buildroot image";
+	#address-cells = <1>;
+
+	images {
+		kernel-1 {
+			description = "Linux kernel";
+			data = /incbin/("zImage");
+			type = "kernel";
+			arch = "arm";
+			os = "linux";
+			compression = "none";
+			load = <0x80001000>;
+			entry = <0x80001000>;
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+		fdt-1 {
+			description = "Flattened Device Tree blob";
+			data = /incbin/("%BOARD_DTB%");
+			type = "flat_dt";
+			arch = "arm";
+			compression = "none";
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+		ramdisk-1 {
+			description = "ramdisk";
+			data = /incbin/("rootfs.cpio.xz");
+			type = "ramdisk";
+			arch = "arm";
+			os = "linux";
+			compression = "none";
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "conf-1";
+		conf-1 {
+			description = "Boot Linux kernel with FDT blob, ramdisk";
+			kernel = "kernel-1";
+			fdt = "fdt-1";
+			ramdisk = "ramdisk-1";
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+};
diff --git a/board/aspeed/common/post-image.sh b/board/aspeed/common/post-image.sh
new file mode 100755
index 000000000000..ea65a49afff0
--- /dev/null
+++ b/board/aspeed/common/post-image.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+BOARD_DIR="$(dirname $0)"
+mkimage=$HOST_DIR/bin/mkimage
+
+BOARD_DT=$(sed -n \
+           's/^BR2_LINUX_KERNEL_INTREE_DTS_NAME="\([a-z0-9\-]*\).*"$/\1/p' \
+           ${BR2_CONFIG})
+
+sed -e "s/%BOARD_DTB%/${BOARD_DT}.dtb/" \
+    $BOARD_DIR/image.its.template > $BINARIES_DIR/image.its
+
+(cd $BINARIES_DIR && $mkimage -f image.its image.itb)
+
+GENIMAGE_CFG="board/aspeed/${BOARD_DT#aspeed-*}/genimage.cfg"
+GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+rm -rf "${GENIMAGE_TMP}"
+
+genimage \
+  --rootpath "${TARGET_DIR}" \
+  --tmppath "${GENIMAGE_TMP}" \
+  --inputpath "${BINARIES_DIR}" \
+  --outputpath "${BINARIES_DIR}" \
+  --config "${GENIMAGE_CFG}"
+
+rm -f $BINARIES_DIR/image.its
diff --git a/configs/aspeed_ast2600evb_defconfig b/configs/aspeed_ast2600evb_defconfig
new file mode 100644
index 000000000000..cd058ad0ac28
--- /dev/null
+++ b/configs/aspeed_ast2600evb_defconfig
@@ -0,0 +1,44 @@
+# Architecture
+BR2_arm=y
+BR2_cortex_a7=y
+BR2_ARM_FPU_VFPV4=y
+
+# System
+BR2_TARGET_GENERIC_HOSTNAME="aspeed-evb"
+BR2_TARGET_GENERIC_ISSUE="Aspeed EVB"
+BR2_SYSTEM_DHCP="eth0"
+
+# Filesystem
+BR2_TARGET_ROOTFS_CPIO=y
+BR2_TARGET_ROOTFS_CPIO_XZ=y
+
+# Image
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/aspeed/common/post-image.sh"
+
+# Linux headers same as kernel
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_17=y
+
+# Kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.17.7"
+BR2_LINUX_KERNEL_DEFCONFIG="aspeed_g5"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="aspeed-ast2600-evb"
+
+# Boot
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_GIT=y
+BR2_TARGET_UBOOT_CUSTOM_REPO_URL="https://github.com/openbmc/u-boot.git"
+BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="f2b82fa4ba17ed8091fe76c284220006645a293b"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="evb-ast2600"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_CUSTOM_MAKEOPTS="DEVICE_TREE=ast2600a1-evb"
+
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_FIT_SUPPORT=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+
+# Target tools
+BR2_PACKAGE_MTD=y
-- 
2.35.3

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