payloads/LinuxBoot: Add ARM64 support

Add support for ARCH=ARM64 and introduce CROSS_COMPILE for all architectures.

* Always compress kernel Image using xz
* Create FIT uImage containing the kernel, initramfs and DTB
* Add ARM64 defconfig for all SoCs

Change-Id: I9a0cc248283432fb2384956ca55e687d4127398c
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/25152
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

7 files changed, 547 insertions, 27 deletions

diff --git a/payloads/external/LinuxBoot/Kconfig b/payloads/external/LinuxBoot/Kconfig
index 74e6c9451c..24d44cf0a6 100644
--- a/payloads/external/LinuxBoot/Kconfig
+++ b/payloads/external/LinuxBoot/Kconfig
@@ -20,19 +20,30 @@ choice
 
 config LINUXBOOT_X86_64
 	bool "x86_64"
+	depends on ARCH_X86
 	help
 	  AMD64 kernel and initramfs
 
 config LINUXBOOT_X86
 	bool "x86"
+	depends on ARCH_X86
 	help
 	  X86 kernel and initramfs
+
+config LINUXBOOT_ARM64
+	bool "arm64"
+	depends on ARCH_ARM64
+	select PAYLOAD_FIT_SUPPORT
+	help
+	  AARCH64 kernel and initramfs
+
 endchoice
 
 config LINUXBOOT_ARCH
 	string
 	default "amd64" if LINUXBOOT_X86_64
 	default "386" if LINUXBOOT_X86
+	default "arm64" if LINUXBOOT_ARM64
 
 choice
 	prompt "Kernel version"
@@ -61,6 +72,11 @@ config LINUXBOOT_KERNEL_COMMANDLINE
 	help
 	  Add your own kernel command-line arguments.
 
+config LINUXBOOT_DTB_FILE
+	string "Compiled devicetree file"
+	depends on LINUXBOOT_ARM64
+	default ""
+
 config PAYLOAD_FILE
 	default "payloads/external/LinuxBoot/linuxboot/kernel-image"
 
@@ -106,8 +122,11 @@ config LINUXBOOT_UROOT_FILES
 	  initramfs.
 
 config PAYLOAD_USERSPACE
-	string ""
+	string "LinuxBoot initramfs"
 	default "payloads/external/LinuxBoot/linuxboot/initramfs.cpio.xz"
+	help
+	  The initramfs to use with the compiled kernel.
+	  Useful for debugging or custom initramfs.
 
 endif
 endif
diff --git a/payloads/external/LinuxBoot/Kconfig.name b/payloads/external/LinuxBoot/Kconfig.name
index b7b10853ad..18438c7861 100644
--- a/payloads/external/LinuxBoot/Kconfig.name
+++ b/payloads/external/LinuxBoot/Kconfig.name
@@ -14,7 +14,7 @@
 
 config PAYLOAD_LINUXBOOT
 	bool "LinuxBoot"
-	depends on ARCH_X86
+	depends on ARCH_X86 || ARCH_ARM64
 	help
 	  Select this option if you want to build a coreboot image
 	  with a LinuxBoot payload. If you don't know what this is
diff --git a/payloads/external/LinuxBoot/Makefile b/payloads/external/LinuxBoot/Makefile
index 10ad0c3391..651e9827b8 100644
--- a/payloads/external/LinuxBoot/Makefile
+++ b/payloads/external/LinuxBoot/Makefile
@@ -17,9 +17,30 @@ project_dir=linuxboot
 kernel_dir=$(project_dir)/kernel
 
 unexport $(COREBOOT_EXPORTS)
+unexport MAKEFLAGS
+
+XGCCPATH?=$(PWD)/util/crossgcc/xgcc/bin
+ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
+CROSS_COMPILE?=$(XGCCPATH)/i386-linux-
+ARCH?=x86
+else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
+CROSS_COMPILE?=$(XGCCPATH)/x86_64-linux-
+ARCH?=x86_64
+else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
+CROSS_COMPILE?=$(XGCCPATH)/aarch64-linux-
+ARCH?=arm64
+endif
+
+OBJCOPY:=$(CROSS_COMPILE)objcopy
 
 all: payload
 
+toolchain:
+	if [[ ! -x "$(CROSS_COMPILE)gcc" ]]; then \
+	echo "Toolchain '$(CROSS_COMPILE)*' is missing."; \
+	exit 1; \
+	fi
+
 $(kernel_dir)/.config:
 	echo "    WWW        Download Linux $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
 	mkdir -p $(kernel_dir)
@@ -36,23 +57,47 @@ ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
 	cp x86/defconfig $(kernel_dir)/.config
 else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
 	cp x86_64/defconfig $(kernel_dir)/.config
+else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
+	cp arm64/defconfig $(kernel_dir)/.config
 endif
 
-$(project_dir)/kernel-image: config
+ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),386 amd64))
+$(kernel_dir)/arch/x86/boot/bzImage: config toolchain
+else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
+$(kernel_dir)/vmlinux: config toolchain
+endif
 	echo "    MAKE       Kernel $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
-	$(MAKE) -C $(kernel_dir) olddefconfig
-	$(MAKE) -C $(kernel_dir) -j $(CPUS)
-ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
-	cp $(kernel_dir)/arch/x86/boot/bzImage $(project_dir)/kernel-image
-else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
-	cp $(kernel_dir)/arch/x86/boot/bzImage $(project_dir)/kernel-image
+	$(MAKE) -C $(kernel_dir) olddefconfig CROSS_COMPILE=$(CROSS_COMPILE) ARCH=$(ARCH)
+	$(MAKE) -C $(kernel_dir) -j $(CPUS) CROSS_COMPILE=$(CROSS_COMPILE) ARCH=$(ARCH)
+
+ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),386 amd64))
+$(project_dir)/kernel-image: $(kernel_dir)/arch/x86/boot/bzImage
+	cp $< $@
+else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
+$(project_dir)/vmlinux.bin: $(kernel_dir)/vmlinux
+	$(OBJCOPY) -O binary $< $@
+
+$(project_dir)/target.dtb: $(CONFIG_LINUXBOOT_DTB_FILE)
+	cp $< $@
+
+$(project_dir)/vmlinux.bin.lzma: $(project_dir)/vmlinux.bin
+	xz -c -k -f --format=lzma --lzma1=dict=1MiB,lc=3,lp=0,pb=3 $< > $@
+
+$(project_dir)/kernel-image: $(project_dir)/vmlinux.bin.lzma $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)/target.dtb $(project_dir)/initramfs.cpio.xz
+	cp $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)
+	mkimage -f $(project_dir)/kernel_fdt_lzma.its $@
 endif
 
-payload: $(project_dir)/kernel-image
 ifeq ($(CONFIG_LINUXBOOT_UROOT),y)
+$(project_dir)/initramfs.cpio.xz:
 	$(MAKE) -f targets/u-root.mk
+else
+$(project_dir)/initramfs.cpio.xz:
+	echo "Building without u-root support"
 endif
 
+payload: $(project_dir)/kernel-image $(project_dir)/initramfs.cpio.xz
+
 clean:
 	if [ -d "$(kernel_dir)" ]; then make -C $(kernel_dir) clean; fi
 	rm -f $(project_dir)/initramfs.cpio.xz
@@ -60,4 +105,4 @@ clean:
 distclean:
 	rm -rf $(project_dir)
 
-.PHONY: config patch payload clean distclean clone fetch all
+.PHONY: config patch payload clean distclean clone fetch all toolchain
diff --git a/payloads/external/LinuxBoot/arm64/defconfig b/payloads/external/LinuxBoot/arm64/defconfig
new file mode 100644
index 0000000000..6f68019af3
--- /dev/null
+++ b/payloads/external/LinuxBoot/arm64/defconfig
@@ -0,0 +1,383 @@
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_IRQ_TIME_ACCOUNTING=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_NUMA_BALANCING=y
+CONFIG_CGROUPS=y
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_DEBUG_BLK_CGROUP=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_RDMA=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_JUMP_LABEL=y
+CONFIG_CC_STACKPROTECTOR_NONE=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEBUG_FS is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_CFQ_GROUP_IOSCHED=y
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
+CONFIG_ARCH_ACTIONS=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_ARCH_ALPINE=y
+CONFIG_ARCH_BCM2835=y
+CONFIG_ARCH_BCM_IPROC=y
+CONFIG_ARCH_BERLIN=y
+CONFIG_ARCH_BRCMSTB=y
+CONFIG_ARCH_EXYNOS=y
+CONFIG_ARCH_LAYERSCAPE=y
+CONFIG_ARCH_LG1K=y
+CONFIG_ARCH_HISI=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_ARCH_MESON=y
+CONFIG_ARCH_MVEBU=y
+CONFIG_ARCH_QCOM=y
+CONFIG_ARCH_REALTEK=y
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_ARCH_SEATTLE=y
+CONFIG_ARCH_SYNQUACER=y
+CONFIG_ARCH_RENESAS=y
+CONFIG_ARCH_R8A7795=y
+CONFIG_ARCH_R8A7796=y
+CONFIG_ARCH_R8A77970=y
+CONFIG_ARCH_R8A77995=y
+CONFIG_ARCH_STRATIX10=y
+CONFIG_ARCH_TEGRA=y
+CONFIG_ARCH_SPRD=y
+CONFIG_ARCH_THUNDER=y
+CONFIG_ARCH_THUNDER2=y
+CONFIG_ARCH_UNIPHIER=y
+CONFIG_ARCH_VEXPRESS=y
+CONFIG_ARCH_XGENE=y
+CONFIG_ARCH_ZX=y
+CONFIG_ARCH_ZYNQMP=y
+CONFIG_PCI=y
+CONFIG_PCI_REALLOC_ENABLE_AUTO=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_PRI=y
+CONFIG_PCI_PASID=y
+CONFIG_HOTPLUG_PCI=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCI_XGENE=y
+CONFIG_PCI_HOST_THUNDER_PEM=y
+CONFIG_ARM64_VA_BITS_48=y
+CONFIG_SCHED_MC=y
+CONFIG_NR_CPUS=8
+CONFIG_NUMA=y
+CONFIG_PREEMPT=y
+# CONFIG_COMPACTION is not set
+CONFIG_KSM=y
+CONFIG_CMA=y
+CONFIG_SECCOMP=y
+CONFIG_KEXEC=y
+# CONFIG_EFI is not set
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_BINFMT_SCRIPT is not set
+CONFIG_CPU_IDLE=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_PACKET_DIAG=y
+CONFIG_UNIX=y
+CONFIG_TLS=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_NET_IPIP=y
+CONFIG_NET_IPGRE_DEMUX=y
+CONFIG_SYN_COOKIES=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_BRIDGE=y
+CONFIG_VLAN_8021Q=y
+CONFIG_NET_DEVLINK=y
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_EXTRA_FIRMWARE="cpt8x-mc-ae.out cpt8x-mc-se.out"
+CONFIG_DMA_CMA=y
+CONFIG_MTD=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_PLATFORM=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_BLK_DEV_NVME=y
+CONFIG_NVME_MULTIPATH=y
+CONFIG_NVME_FC=y
+CONFIG_SRAM=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+CONFIG_SCSI_SAS_LIBSAS=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_ATA=y
+CONFIG_SATA_AHCI=y
+CONFIG_SATA_AHCI_PLATFORM=y
+# CONFIG_ATA_BMDMA is not set
+CONFIG_MD=y
+CONFIG_BLK_DEV_DM=y
+CONFIG_DM_CRYPT=y
+CONFIG_NETDEVICES=y
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_VENDOR_ADAPTEC is not set
+# CONFIG_NET_VENDOR_AGERE is not set
+# CONFIG_NET_VENDOR_ALACRITECH is not set
+# CONFIG_NET_VENDOR_ALTEON is not set
+# CONFIG_NET_VENDOR_AMAZON is not set
+# CONFIG_NET_VENDOR_AMD is not set
+# CONFIG_NET_VENDOR_AQUANTIA is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ATHEROS is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_BROCADE is not set
+CONFIG_THUNDER_NIC_PF=y
+CONFIG_THUNDER_NIC_VF=y
+CONFIG_LIQUIDIO=y
+CONFIG_LIQUIDIO_VF=y
+# CONFIG_NET_VENDOR_CHELSIO is not set
+# CONFIG_NET_VENDOR_CISCO is not set
+# CONFIG_NET_VENDOR_DEC is not set
+# CONFIG_NET_VENDOR_DLINK is not set
+# CONFIG_NET_VENDOR_EMULEX is not set
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_EXAR is not set
+# CONFIG_NET_VENDOR_HISILICON is not set
+# CONFIG_NET_VENDOR_HP is not set
+# CONFIG_NET_VENDOR_HUAWEI is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MELLANOX is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_MYRI is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_NVIDIA is not set
+# CONFIG_NET_VENDOR_OKI is not set
+# CONFIG_NET_PACKET_ENGINE is not set
+# CONFIG_NET_VENDOR_QLOGIC is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_REALTEK is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_RDC is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SILAN is not set
+# CONFIG_NET_VENDOR_SIS is not set
+# CONFIG_NET_VENDOR_SOLARFLARE is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SUN is not set
+# CONFIG_NET_VENDOR_TEHUTI is not set
+# CONFIG_NET_VENDOR_TI is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+CONFIG_MDIO_OCTEON=y
+CONFIG_AQUANTIA_PHY=y
+CONFIG_MARVELL_PHY=y
+CONFIG_VITESSE_PHY=y
+# CONFIG_USB_NET_DRIVERS is not set
+# CONFIG_WLAN is not set
+CONFIG_INPUT_POLLDEV=y
+CONFIG_INPUT_EVDEV=y
+CONFIG_KEYBOARD_GPIO=y
+CONFIG_KEYBOARD_CROS_EC=y
+CONFIG_INPUT_MISC=y
+# CONFIG_SERIO_SERPORT is not set
+CONFIG_SERIO_AMBAKMI=y
+CONFIG_LEGACY_PTY_COUNT=16
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_8250_UNIPHIER=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_XILINX_PS_UART=y
+CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_MUX=y
+CONFIG_I2C_MUX_PCA954x=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_I2C_RK3X=y
+CONFIG_I2C_UNIPHIER_F=y
+CONFIG_I2C_THUNDERX=y
+CONFIG_I2C_CROS_EC_TUNNEL=y
+CONFIG_I2C_SLAVE=y
+CONFIG_SPI=y
+CONFIG_SPI_THUNDERX=y
+# CONFIG_PINCTRL_UNIPHIER is not set
+CONFIG_GPIO_DWAPB=y
+CONFIG_GPIO_PL061=y
+CONFIG_GPIO_THUNDERX=y
+CONFIG_GPIO_UNIPHIER=y
+CONFIG_GPIO_XGENE=y
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_PCF857X=y
+CONFIG_GPIO_MAX77620=y
+CONFIG_POWER_RESET_XGENE=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_SYSCON_REBOOT_MODE=y
+CONFIG_BATTERY_BQ27XXX=y
+# CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_SOFT_WATCHDOG=y
+CONFIG_XILINX_WATCHDOG=y
+CONFIG_ZIIRAVE_WATCHDOG=y
+CONFIG_ARM_SP805_WATCHDOG=y
+CONFIG_ARM_SBSA_WATCHDOG=y
+CONFIG_CADENCE_WATCHDOG=y
+CONFIG_MAX77620_WATCHDOG=y
+CONFIG_UNIPHIER_WATCHDOG=y
+CONFIG_MFD_CROS_EC=y
+CONFIG_MFD_CROS_EC_I2C=y
+CONFIG_MFD_HI6421_PMIC=y
+CONFIG_MFD_MAX77620=y
+CONFIG_MFD_RK808=y
+CONFIG_MFD_SEC_CORE=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+# CONFIG_VGA_ARB is not set
+CONFIG_FB=y
+CONFIG_FB_ARMCLCD=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_HID_A4TECH=y
+CONFIG_HID_APPLE=y
+CONFIG_HID_BELKIN=y
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CHICONY=y
+CONFIG_HID_CYPRESS=y
+CONFIG_HID_EZKEY=y
+CONFIG_HID_ITE=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_LOGITECH=y
+CONFIG_HID_MICROSOFT=y
+CONFIG_HID_MONTEREY=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_USB_ACM=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_UAS=y
+CONFIG_USB_SERIAL=y
+CONFIG_MMC=y
+CONFIG_SDIO_UART=y
+CONFIG_MMC_ARMMMCI=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_CAVIUM_THUNDERX=m
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_ISL1208=y
+CONFIG_RTC_DRV_ISL12022=y
+CONFIG_SYNC_FILE=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_COMMON_CLK_RK808=y
+CONFIG_COMMON_CLK_CS2000_CP=y
+CONFIG_COMMON_CLK_S2MPS11=y
+CONFIG_CLK_QORIQ=y
+CONFIG_IOMMU_IO_PGTABLE_ARMV7S=y
+CONFIG_ARM_SMMU=y
+CONFIG_ARM_SMMU_V3=y
+CONFIG_EXTCON_USB_GPIO=y
+CONFIG_PHY_XGENE=y
+CONFIG_TEE=y
+CONFIG_OPTEE=y
+CONFIG_GOOGLE_FIRMWARE=y
+CONFIG_GOOGLE_COREBOOT_TABLE_OF=y
+CONFIG_GOOGLE_MEMCONSOLE_COREBOOT=y
+CONFIG_GOOGLE_VPD=y
+CONFIG_EXT3_FS=y
+CONFIG_XFS_FS=y
+CONFIG_BTRFS_FS=y
+CONFIG_F2FS_FS=y
+CONFIG_FS_DAX=y
+CONFIG_EXPORTFS_BLOCK_OPS=y
+CONFIG_FANOTIFY=y
+CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
+CONFIG_ISO9660_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_UTF8=y
+CONFIG_NTFS_FS=y
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_PRINTK_TIME=y
+CONFIG_MESSAGE_LOGLEVEL_DEFAULT=5
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_FS=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_FTRACE is not set
+CONFIG_MEMTEST=y
+# CONFIG_STRICT_DEVMEM is not set
+CONFIG_KEYS=y
+CONFIG_SECURITY=y
+# CONFIG_INTEGRITY is not set
+CONFIG_CRYPTO_RSA=y
+CONFIG_CRYPTO_ECDH=y
+# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
+CONFIG_CRYPTO_AUTHENC=y
+CONFIG_CRYPTO_ECHAINIV=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_CMAC=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_ARC4=y
+CONFIG_CRYPTO_DES=y
+CONFIG_CRYPTO_ANSI_CPRNG=y
+# CONFIG_CRYPTO_DEV_VIRTIO is not set
+CONFIG_ASYMMETRIC_KEY_TYPE=y
+CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
+CONFIG_X509_CERTIFICATE_PARSER=y
+CONFIG_PKCS7_MESSAGE_PARSER=y
+CONFIG_SYSTEM_TRUSTED_KEYRING=y
+CONFIG_ARM64_CRYPTO=y
+CONFIG_CRYPTO_SHA512_ARM64=y
+CONFIG_CRYPTO_SHA1_ARM64_CE=y
+CONFIG_CRYPTO_SHA2_ARM64_CE=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_CRCT10DIF_ARM64_CE=y
+CONFIG_CRYPTO_CRC32_ARM64_CE=y
+CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
+CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
+CONFIG_CRYPTO_CHACHA20_NEON=y
+CONFIG_CRYPTO_AES_ARM64_BS=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRC7=y
diff --git a/payloads/external/LinuxBoot/arm64/kernel_fdt_lzma.its b/payloads/external/LinuxBoot/arm64/kernel_fdt_lzma.its
new file mode 100644
index 0000000000..50f6a2f4d8
--- /dev/null
+++ b/payloads/external/LinuxBoot/arm64/kernel_fdt_lzma.its
@@ -0,0 +1,74 @@
+/*
+ * Simple U-Boot uImage source file containing a single kernel and FDT blob
+ */
+
+/dts-v1/;
+
+/ {
+	description = "Simple image with single Linux kernel and FDT blob";
+	#address-cells = <1>;
+
+	images {
+		kernel {
+			description = "Vanilla Linux kernel";
+			data = /incbin/("vmlinux.bin.lzma");
+			type = "kernel";
+			arch = "arm64";
+			os = "linux";
+			compression = "lzma";
+			load = <0x80000>;
+			entry = <0x80000>;
+			hash-1 {
+				algo = "crc32";
+			};
+			hash-2 {
+				algo = "sha1";
+			};
+			hash-3 {
+				algo = "sha256";
+			};
+		};
+		fdt-1 {
+			description = "Flattened Device Tree blob";
+			data = /incbin/("target.dtb");
+			type = "flat_dt";
+			arch = "arm64";
+			compression = "none";
+			hash-1 {
+				algo = "crc32";
+			};
+			hash-2 {
+				algo = "sha1";
+			};
+			hash-3 {
+				algo = "sha256";
+			};
+		};
+		ramdisk-1 {
+                        description = "Compressed Initramfs";
+                        data = /incbin/("initramfs.cpio.xz");
+                        type = "ramdisk";
+                        arch = "arm64";
+                        os = "linux";
+                        compression = "none";
+                        load = <00000000>;
+                        entry = <00000000>;
+                        hash-1 {
+                                algo = "sha1";
+                        };
+                        hash-2 {
+                                algo = "sha256";
+                        };
+		};
+	};
+
+	configurations {
+		default = "conf-1";
+		conf-1 {
+			description = "Boot Linux kernel with FDT blob";
+			kernel = "kernel";
+			fdt = "fdt-1";
+			ramdisk = "ramdisk-1";
+		};
+	};
+};
diff --git a/payloads/external/LinuxBoot/targets/u-root.mk b/payloads/external/LinuxBoot/targets/u-root.mk
index 9b0e5687d7..4c2994c2e3 100644
--- a/payloads/external/LinuxBoot/targets/u-root.mk
+++ b/payloads/external/LinuxBoot/targets/u-root.mk
@@ -52,8 +52,11 @@ checkout: fetch
 		done;,true;) \
 	fi
 
-$(project_dir)/initramfs.cpio.xz: checkout
-	cd $(uroot_dir); GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) go build u-root.go
+$(uroot_dir)/u-root: $(uroot_dir)/u-root.go
+	echo "    GO        u-root"
+	cd $(uroot_dir); GOPATH=$(go_path_dir) go build u-root.go
+
+$(project_dir)/initramfs.cpio.xz: checkout $(uroot_dir)/u-root
 	echo "    MAKE       u-root $(CONFIG_LINUXBOOT_UROOT_VERSION)"
 ifneq ($(CONFIG_LINUXBOOT_UROOT_COMMANDS),)
 ifneq ($(CONFIG_LINUXBOOT_UROOT_FILES),)
diff --git a/payloads/external/Makefile.inc b/payloads/external/Makefile.inc
index 1d3e7a17d9..973bdfb10d 100644
--- a/payloads/external/Makefile.inc
+++ b/payloads/external/Makefile.inc
@@ -33,10 +33,14 @@ $(PAYLOAD_CONFIG): payloads/external/depthcharge/depthcharge/build/depthcharge.e
 endif
 
 ifeq ($(CONFIG_PAYLOAD_LINUXBOOT),y)
-ifneq ($(strip $(call strip_quotes,$(CONFIG_LINUXBOOT_KERNEL_COMMANDLINE))),)
+  ifeq ($(CONFIG_ARCH_X86),y)
+    ifneq ($(strip $(call strip_quotes,$(CONFIG_LINUXBOOT_KERNEL_COMMANDLINE))),)
       ADDITIONAL_PAYLOAD_CONFIG+=-C $(CONFIG_LINUXBOOT_KERNEL_COMMANDLINE)
-endif
-ADDITIONAL_PAYLOAD_CONFIG+=-I $(CONFIG_PAYLOAD_USERSPACE)
+    endif
+    ifneq ($(strip $(call strip_quotes,$(CONFIG_PAYLOAD_USERSPACE))),)
+      ADDITIONAL_PAYLOAD_CONFIG+=-I $(strip $(call strip_quotes,$(CONFIG_PAYLOAD_USERSPACE)))
+    endif
+  endif
 endif
 
 ifeq ($(CONFIG_PAYLOAD_LINUX),y)
@@ -259,16 +263,6 @@ payloads/external/iPXE/ipxe/ipxe.rom ipxe: $(DOTCONFIG)
 
 linuxboot:
 	$(MAKE) -C payloads/external/LinuxBoot \
-		HOSTCC="$(HOSTCC)" \
-		CC="$(HOSTCC)" \
-		GCC_CC_x86_32=$(GCC_CC_x86_32) \
-		GCC_CC_x86_64=$(GCC_CC_x86_64) \
-		GCC_CC_arm=$(GCC_CC_arm) \
-		GCC_CC_arm64=$(GCC_CC_arm64) \
-		OBJCOPY_x86_32=$(OBJCOPY_x86_32) \
-		OBJCOPY_x86_64=$(OBJCOPY_x86_64) \
-		OBJCOPY_arm=$(OBJCOPY_arm) \
-		OBJCOPY_arm64=$(OBJCOPY_arm64) \
 		CPUS=$(CPUS) \
 		CONFIG_LINUXBOOT_KERNEL_VERSION=$(CONFIG_LINUXBOOT_KERNEL_VERSION) \
 		CONFIG_LINUXBOOT_KERNEL_CONFIGFILE=$(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE) \
@@ -277,7 +271,9 @@ linuxboot:
 		CONFIG_LINUXBOOT_UROOT_COMMANDS="$(CONFIG_LINUXBOOT_UROOT_COMMANDS)" \
 		CONFIG_LINUXBOOT_ARCH=$(CONFIG_LINUXBOOT_ARCH) \
 		CONFIG_LINUXBOOT_UROOT=$(CONFIG_LINUXBOOT_UROOT) \
-		CONFIG_LINUXBOOT_UROOT_FILES=$(CONFIG_LINUXBOOT_UROOT_FILES)
+		CONFIG_LINUXBOOT_UROOT_FILES=$(CONFIG_LINUXBOOT_UROOT_FILES) \
+		CONFIG_LINUXBOOT_DTB_FILE=$(CONFIG_LINUXBOOT_DTB_FILE)
+
 
 payloads/external/LinuxBoot/linuxboot/kernel-image: linuxboot
 payloads/external/LinuxBoot/linuxboot/initramfs.cpio.xz: linuxboot