Initial commit

target/linux/armvirt/32/config-5.10

@@ -0,0 +1,73 @@
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MULTIPLATFORM=y
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_MULTI_V7=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
+CONFIG_ARCH_VIRT=y
+CONFIG_ARM=y
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+CONFIG_ARM_HEAVY_MB=y
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
+CONFIG_ARM_LPAE=y
+CONFIG_ARM_PATCH_IDIV=y
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_PSCI=y
+CONFIG_ARM_THUMB=y
+CONFIG_ARM_UNWIND=y
+CONFIG_ARM_VIRT_EXT=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
+CONFIG_CACHE_L2X0=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_HAS_ASID=y
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_SPECTRE=y
+CONFIG_CPU_THUMB_CAPABLE=y
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_V7=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DMA_OPS=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_GENERIC_VDSO_32=y
+CONFIG_HARDEN_BRANCH_PREDICTOR=y
+CONFIG_HAVE_SMP=y
+CONFIG_HZ_FIXED=0
+CONFIG_HZ_PERIODIC=y
+CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_NEON=y
+CONFIG_NR_CPUS=4
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_OUTER_CACHE=y
+CONFIG_OUTER_CACHE_SYNC=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_RTC_MC146818_LIB=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SMP_ON_UP=y
+CONFIG_SWP_EMULATE=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNWINDER_ARM=y
+CONFIG_USE_OF=y
+CONFIG_VFP=y
+CONFIG_VFPv3=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0

target/linux/armvirt/32/target.mk

@@ -0,0 +1,10 @@
+ARCH:=arm
+SUBTARGET:=32
+BOARDNAME:=QEMU ARM Virtual Machine (cortex-a15)
+CPU_TYPE:=cortex-a15
+CPU_SUBTYPE:=neon-vfpv4
+KERNELNAME:=zImage
+
+define Target/Description
+  Build images for $(BOARDNAME)
+endef

target/linux/armvirt/64/config-5.10

@@ -0,0 +1,151 @@
+CONFIG_64BIT=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=24
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SPARSEMEM_DEFAULT=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_VEXPRESS=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_CNP=y
+CONFIG_ARM64_CRYPTO=y
+CONFIG_ARM64_ERRATUM_1165522=y
+CONFIG_ARM64_ERRATUM_1286807=y
+CONFIG_ARM64_ERRATUM_819472=y
+CONFIG_ARM64_ERRATUM_824069=y
+CONFIG_ARM64_ERRATUM_826319=y
+CONFIG_ARM64_ERRATUM_827319=y
+CONFIG_ARM64_ERRATUM_832075=y
+CONFIG_ARM64_ERRATUM_843419=y
+CONFIG_ARM64_HW_AFDBM=y
+CONFIG_ARM64_MODULE_PLTS=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_UAO=y
+CONFIG_ARM64_VA_BITS=39
+CONFIG_ARM64_VA_BITS_39=y
+CONFIG_ARM64_VHE=y
+CONFIG_ARM64_WORKAROUND_CLEAN_CACHE=y
+CONFIG_ARM64_WORKAROUND_REPEAT_TLBI=y
+CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT=y
+CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND=y
+CONFIG_ATOMIC64_SELFTEST=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BLK_PM=y
+CONFIG_CAVIUM_TX2_ERRATUM_219=y
+CONFIG_CLK_SP810=y
+CONFIG_CLK_VEXPRESS_OSC=y
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PM=y
+CONFIG_CRYPTO_AES_ARM64=y
+CONFIG_CRYPTO_AES_ARM64_BS=y
+CONFIG_CRYPTO_AES_ARM64_CE=y
+CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
+CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
+CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
+CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA=y
+CONFIG_CRYPTO_CHACHA20=y
+CONFIG_CRYPTO_CHACHA20_NEON=y
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_GF128MUL=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_LIB_CHACHA_GENERIC=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA1_ARM64_CE=y
+CONFIG_CRYPTO_SHA256_ARM64=y
+CONFIG_CRYPTO_SHA2_ARM64_CE=y
+CONFIG_CRYPTO_SHA512_ARM64=y
+CONFIG_CRYPTO_SIMD=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DRM=y
+CONFIG_DRM_BOCHS=y
+CONFIG_DRM_BRIDGE=y
+CONFIG_DRM_GEM_SHMEM_HELPER=y
+CONFIG_DRM_KMS_HELPER=y
+CONFIG_DRM_PANEL=y
+CONFIG_DRM_PANEL_BRIDGE=y
+CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
+CONFIG_DRM_QXL=y
+CONFIG_DRM_TTM=y
+CONFIG_DRM_TTM_DMA_PAGE_POOL=y
+CONFIG_DRM_TTM_HELPER=y
+CONFIG_DRM_VIRTIO_GPU=y
+CONFIG_DRM_VRAM_HELPER=y
+CONFIG_FB=y
+CONFIG_FB_ARMCLCD=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+CONFIG_FB_MODE_HELPERS=y
+# CONFIG_FLATMEM_MANUAL is not set
+CONFIG_FRAME_POINTER=y
+CONFIG_FSL_ERRATUM_A008585=y
+CONFIG_FUJITSU_ERRATUM_010001=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+CONFIG_HDMI=y
+CONFIG_HOLES_IN_ZONE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_VIRTIO=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_ICST is not set
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_KCMP=y
+CONFIG_LCD_CLASS_DEVICE=m
+# CONFIG_LCD_PLATFORM is not set
+CONFIG_MFD_CORE=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MFD_VEXPRESS_SYSREG=y
+CONFIG_MMC=y
+CONFIG_MMC_ARMMMCI=y
+CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=64
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_VEXPRESS=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+CONFIG_RTC_I2C_AND_SPI=y
+CONFIG_SMC91X=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_VEXPRESS_CONFIG=y
+CONFIG_VIDEOMODE_HELPERS=y
+CONFIG_VIRTIO_DMA_SHARED_BUFFER=y
+CONFIG_VMAP_STACK=y
+CONFIG_ZONE_DMA32=y

target/linux/armvirt/64/target.mk

@@ -0,0 +1,9 @@
+ARCH:=aarch64
+SUBTARGET:=64
+BOARDNAME:=QEMU ARMv8 Virtual Machine (cortex-a53)
+CPU_TYPE:=cortex-a53
+KERNELNAME:=Image
+
+define Target/Description
+  Build multi-platform images for the ARMv8 instruction set architecture
+endef

target/linux/armvirt/Makefile

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2017 Yousong Zhou <yszhou4tech@gmail.com>
+
+include $(TOPDIR)/rules.mk
+
+BOARD:=armvirt
+BOARDNAME:=QEMU ARM Virtual Machine
+FEATURES:=fpu pci rtc usb
+FEATURES+=cpiogz ext4 ramdisk squashfs targz
+
+KERNEL_PATCHVER:=5.10
+
+include $(INCLUDE_DIR)/target.mk
+
+DEFAULT_PACKAGES += mkf2fs e2fsprogs
+
+$(eval $(call BuildTarget))

target/linux/armvirt/README

@@ -0,0 +1,40 @@
+This is intended to be used with OpenWrt project to provide image for use with
+QEMU ARM virt machine.
+
+Run with qemu-system-arm
+
+	# boot with initramfs embedded in
+	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armvirt-32-zImage-initramfs
+
+	# boot with accel=kvm
+	qemu-system-arm -nographic -M virt,accel=kvm -cpu host -m 64 -kernel
+	openwrt-armvirt-32-zImage-initramfs
+
+	# boot with a separate rootfs
+	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armvirt-32-zImage \
+	  -drive file=openwrt-armvirt-32-root.ext4,format=raw,if=virtio -append 'root=/dev/vda rootwait'
+
+	# boot with local dir as rootfs
+	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armvirt-32-zImage \
+	  -fsdev local,id=rootdev,path=root-armvirt/,security_model=none \
+	  -device virtio-9p-pci,fsdev=rootdev,mount_tag=/dev/root \
+	  -append 'rootflags=trans=virtio,version=9p2000.L,cache=loose rootfstype=9p'
+
+Run with kvmtool
+
+	# start a named machine
+	lkvm run -k openwrt-armvirt-32-zImage -i openwrt-armvirt-32-rootfs.cpio --name armvirt0
+
+	# start with virtio-9p rootfs
+	lkvm run -k openwrt-armvirt-32-zImage -d root-armvirt/
+
+	# stop "armvirt0"
+	lkvm stop --name armvirt0
+
+	# stop all
+	lkvm stop --all
+
+The multi-platform ARMv8 target can be used with QEMU:
+
+	qemu-system-aarch64 -machine virt -cpu cortex-a57 -nographic \
+		-kernel openwrt-armvirt-64-Image-initramfs \

target/linux/armvirt/base-files/etc/board.d/00_model

@@ -0,0 +1,13 @@
+# Copyright (C) 2015 OpenWrt.org
+# Copyright (C) 2016 Yousong Zhou <yszhou4tech@gmail.com>
+
+. /lib/functions/uci-defaults.sh
+
+board_config_update
+
+ucidef_set_board_id "armvirt"
+ucidef_set_model_name "QEMU ARM Virtual Machine"
+
+board_config_flush
+
+exit 0

target/linux/armvirt/base-files/etc/inittab

@@ -0,0 +1,5 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+ttyAMA0::askfirst:/usr/libexec/login.sh
+ttyS0::askfirst:/usr/libexec/login.sh
+hvc0::askfirst:/usr/libexec/login.sh

target/linux/armvirt/config-5.10

@@ -0,0 +1,163 @@
+CONFIG_9P_FS=y
+# CONFIG_9P_FS_POSIX_ACL is not set
+# CONFIG_9P_FS_SECURITY is not set
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_GIC_V3_ITS_PCI=y
+CONFIG_ARM_PSCI_FW=y
+CONFIG_BALLOON_COMPACTION=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_MQ_VIRTIO=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+CONFIG_CRYPTO_NULL2=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_REMAP=y
+CONFIG_DTC=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+CONFIG_F2FS_FS=y
+CONFIG_FAILOVER=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_PL061=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HVC_DRIVER=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_LIBFDT=y
+CONFIG_LLD_VERSION=0
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_BALLOON=y
+CONFIG_MIGRATION=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NET_9P=y
+# CONFIG_NET_9P_DEBUG is not set
+CONFIG_NET_9P_VIRTIO=y
+CONFIG_NET_FAILOVER=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NLS=y
+CONFIG_NVMEM=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_NET=y
+CONFIG_PADATA=y
+CONFIG_PAGE_REPORTING=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_ECAM=y
+CONFIG_PCI_HOST_COMMON=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_RATIONAL=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_PL031=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+CONFIG_SWIOTLB=y
+CONFIG_SYS_SUPPORTS_HUGETLBFS=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_USB_SUPPORT=y
+CONFIG_VIRTIO=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_PCI_LEGACY=y
+CONFIG_XPS=y

target/linux/armvirt/image/Makefile

@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2016-2017 Yousong Zhou <yszhou4tech@gmail.com>
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/image.mk
+
+define Image/BuildKernel
+	$(foreach k,$(filter zImage Image,$(KERNELNAME)), \
+		cp $(KDIR)/$(KERNELNAME) $(BIN_DIR)/$(IMG_PREFIX)-$(k) \
+	)
+endef
+
+define Image/Build/Initramfs
+	$(foreach k,$(filter zImage Image,$(KERNELNAME)), \
+		cp $(KDIR)/$(k)-initramfs $(BIN_DIR)/$(IMG_PREFIX)-$(k)-initramfs \
+	)
+endef
+
+define Image/Build/gzip
+	gzip -f9n $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
+endef
+
+$(eval $(call Image/gzip-ext4-padded-squashfs))
+
+define Image/Build
+	$(call Image/Build/$(1))
+	$(CP) $(KDIR)/root.$(1) $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
+	$(call Image/Build/gzip/$(1))
+endef
+
+$(eval $(call BuildImage))