octeontx: add support for OCTEON TX target

The Cavium OCTEON TX is an ARM 64-bit SoC leveraging CPU cores and
periperhals from the Cavium ThunderX SoC.

This initial support provides a 4.14 kernel and kernel+initramfs that is
bootable on the Gateworks Newport GW630x as well as the Cavium sff8104
reference board.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

8 files changed, 1049 insertions, 0 deletions

diff --git a/target/linux/octeontx/Makefile b/target/linux/octeontx/Makefile
new file mode 100644
index 0000000000..bbe8149b0b
--- /dev/null
+++ b/target/linux/octeontx/Makefile
@@ -0,0 +1,27 @@
+#
+# Copyright (C) 2018 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+
+ARCH:=aarch64
+BOARD:=octeontx
+BOARDNAME:=Octeon-TX
+FEATURES:=targz pcie gpio rtc usb
+CFLAGS:=-Os -pipe -fno-caller-saves
+
+MAINTAINER:=Tim Harvey <tharvey@gateworks.com>
+
+KERNEL_PATCHVER:=4.14
+
+define Target/Description
+	Build images for Octeon-TX CN80XX/CN81XX based boards
+endef
+
+include $(INCLUDE_DIR)/target.mk
+
+KERNELNAME:=Image
+
+$(eval $(call BuildTarget))
diff --git a/target/linux/octeontx/base-files/etc/board.d/02_network b/target/linux/octeontx/base-files/etc/board.d/02_network
new file mode 100644
index 0000000000..3ad5e852cb
--- /dev/null
+++ b/target/linux/octeontx/base-files/etc/board.d/02_network
@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# Copyright (C) 2018 OpenWrt.org
+#
+
+. ./lib/functions/uci-defaults.sh
+. ./lib/octeontx.sh
+
+board=$(octeontx_board_name)
+
+board_config_update
+
+case "$board" in
+esac
+
+board_config_flush
+
+exit 0
diff --git a/target/linux/octeontx/base-files/etc/inittab b/target/linux/octeontx/base-files/etc/inittab
new file mode 100644
index 0000000000..be235d8792
--- /dev/null
+++ b/target/linux/octeontx/base-files/etc/inittab
@@ -0,0 +1,5 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+tts/0::askfirst:/usr/libexec/login.sh
+ttyAMA0::askfirst:/usr/libexec/login.sh
+tty1::askfirst:/usr/libexec/login.sh
diff --git a/target/linux/octeontx/base-files/lib/octeontx.sh b/target/linux/octeontx/base-files/lib/octeontx.sh
new file mode 100644
index 0000000000..b6335f8a00
--- /dev/null
+++ b/target/linux/octeontx/base-files/lib/octeontx.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+#
+# Copyright (C) 2018 OpenWrt.org
+#
+
+octeontx_board_detect() {
+	local machine
+	local name
+
+	machine=$(cat /proc/device-tree/model)
+	board=$(cat /proc/device-tree/board)
+
+	case "$machine" in
+	"Cavium ThunderX CN81XX board")
+		name="cn81xx"
+		;;
+
+	*)
+		name="generic"
+		;;
+	esac
+
+	case "$board" in
+	GW630*)
+		name="gw630x"
+		;;
+	esac
+
+	[ -e "/tmp/sysinfo" ] || mkdir -p "/tmp/sysinfo"
+
+	echo "$name" > /tmp/sysinfo/board_name
+	echo "$machine" > /tmp/sysinfo/model
+}
+
+octeontx_board_name() {
+	local name
+
+	[ -f /tmp/sysinfo/board_name ] || octeontx_board_detect
+	[ -f /tmp/sysinfo/board_name ] && name=$(cat /tmp/sysinfo/board_name)
+	[ -z "$name" ] && name="unknown"
+
+	echo "$name"
+}
diff --git a/target/linux/octeontx/config-4.14 b/target/linux/octeontx/config-4.14
new file mode 100644
index 0000000000..97d0cc6300
--- /dev/null
+++ b/target/linux/octeontx/config-4.14
@@ -0,0 +1,670 @@
+CONFIG_64BIT=y
+# CONFIG_ACPI is not set
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
+CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
+CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
+CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
+CONFIG_ARCH_HAS_HOLES_MEMORYMODEL=y
+CONFIG_ARCH_HAS_KCOV=y
+CONFIG_ARCH_HAS_SET_MEMORY=y
+CONFIG_ARCH_HAS_SG_CHAIN=y
+CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
+CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
+CONFIG_ARCH_HAS_TICK_BROADCAST=y
+CONFIG_ARCH_HIBERNATION_HEADER=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=33
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
+# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
+CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_DEFAULT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
+CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
+CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_THUNDER=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+# CONFIG_ARCH_WANTS_THP_SWAP is not set
+CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_FRAME_POINTERS=y
+CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
+CONFIG_ARM64=y
+# CONFIG_ARM64_16K_PAGES is not set
+CONFIG_ARM64_4K_PAGES=y
+# CONFIG_ARM64_64K_PAGES is not set
+CONFIG_ARM64_CONT_SHIFT=4
+CONFIG_ARM64_CRYPTO=y
+CONFIG_ARM64_HW_AFDBM=y
+# CONFIG_ARM64_LSE_ATOMICS is not set
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+# CONFIG_ARM64_PMEM is not set
+# CONFIG_ARM64_PTDUMP_CORE is not set
+# CONFIG_ARM64_PTDUMP_DEBUGFS is not set
+# CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET is not set
+# CONFIG_ARM64_SW_TTBR0_PAN is not set
+CONFIG_ARM64_UAO=y
+CONFIG_ARM64_VA_BITS=48
+# CONFIG_ARM64_VA_BITS_39 is not set
+CONFIG_ARM64_VA_BITS_48=y
+CONFIG_ARM64_VHE=y
+# CONFIG_ARMV8_DEPRECATED is not set
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+# CONFIG_ARM_PSCI_CHECKER is not set
+CONFIG_ARM_PSCI_FW=y
+CONFIG_ARM_SBSA_WATCHDOG=y
+# CONFIG_ARM_SP805_WATCHDOG is not set
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_ATA=y
+# CONFIG_ATA_SFF is not set
+CONFIG_AUDIT=y
+CONFIG_AUDITSYSCALL=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_AUDIT_COMPAT_GENERIC=y
+CONFIG_AUDIT_GENERIC=y
+CONFIG_AUDIT_TREE=y
+CONFIG_AUDIT_WATCH=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_BALLOON_COMPACTION=y
+CONFIG_BATTERY_BQ27XXX=y
+# CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM is not set
+CONFIG_BATTERY_BQ27XXX_I2C=y
+# CONFIG_BCM_FLEXRM_MBOX is not set
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_DEV_BSG=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_INTEGRITY=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_MQ_VIRTIO=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_BLOCK_COMPAT=y
+CONFIG_BOUNCE=y
+CONFIG_BPF_JIT=y
+# CONFIG_BRIDGE is not set
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+# CONFIG_BUG is not set
+CONFIG_CAN=y
+# CONFIG_CFS_BANDWIDTH is not set
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEVICE=y
+# CONFIG_CGROUP_FREEZER is not set
+CONFIG_CGROUP_HUGETLB=y
+# CONFIG_CGROUP_NET_CLASSID is not set
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUP_WRITEBACK=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLK_QORIQ=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=16
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_CS2000_CP=y
+# CONFIG_COMMON_CLK_VERSATILE is not set
+CONFIG_COMMON_CLK_XGENE=y
+CONFIG_COMPACTION=y
+CONFIG_COMPAT=y
+CONFIG_COMPAT_BINFMT_ELF=y
+CONFIG_COMPAT_OLD_SIGACTION=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_CPUSETS=y
+# CONFIG_CPU_BIG_ENDIAN is not set
+# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
+CONFIG_CPU_IDLE=y
+# CONFIG_CPU_IDLE_GOV_LADDER is not set
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_IDLE_MULTIPLE_DRIVERS=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRASH_CORE=y
+CONFIG_CRASH_DUMP=y
+CONFIG_CRC16=y
+CONFIG_CRC7=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_AES_ARM64=y
+# CONFIG_CRYPTO_AES_ARM64_BS is not set
+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 is not set
+CONFIG_CRYPTO_ANSI_CPRNG=y
+# CONFIG_CRYPTO_CHACHA20_NEON is not set
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+# CONFIG_CRYPTO_CRC32_ARM64_CE is not set
+CONFIG_CRYPTO_CRCT10DIF=y
+# CONFIG_CRYPTO_CRCT10DIF_ARM64_CE is not set
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECHAINIV=y
+CONFIG_CRYPTO_GF128MUL=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+CONFIG_CRYPTO_NULL=y
+CONFIG_CRYPTO_NULL2=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA1_ARM64_CE=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA256_ARM64=y
+CONFIG_CRYPTO_SHA2_ARM64_CE=y
+# CONFIG_CRYPTO_SHA512_ARM64 is not set
+CONFIG_CRYPTO_SIMD=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_DCACHE_WORD_ACCESS=y
+# CONFIG_DEBUG_ALIGN_RODATA is not set
+# CONFIG_DEBUG_BLK_CGROUP is not set
+CONFIG_DEBUG_INFO=y
+CONFIG_DEFAULT_IOSCHED="noop"
+CONFIG_DEFAULT_NOOP=y
+# CONFIG_DEVPORT is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_ENGINE=y
+# CONFIG_DMA_NOOP_OPS is not set
+CONFIG_DMA_OF=y
+CONFIG_DMA_SHARED_BUFFER=y
+# CONFIG_DMA_VIRT_OPS is not set
+CONFIG_DNS_RESOLVER=y
+# CONFIG_DRM_LIB_RANDOM is not set
+CONFIG_DTC=y
+CONFIG_DT_IDLE_STATES=y
+CONFIG_EDAC=y
+# CONFIG_EDAC_DEBUG is not set
+CONFIG_EDAC_LEGACY_SYSFS=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EDAC_THUNDERX=y
+# CONFIG_EDAC_XGENE is not set
+CONFIG_EEPROM_AT24=y
+# CONFIG_EVM is not set
+CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_FS_POSIX_ACL is not set
+# CONFIG_EXT3_FS_SECURITY is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+# CONFIG_F2FS_CHECK_FS is not set
+CONFIG_F2FS_FS=y
+# CONFIG_F2FS_FS_SECURITY is not set
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_STAT_FS=y
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_FANOTIFY=y
+CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FREEZER=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FUTEX_PI=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=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_PHY=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_GLOB=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_THUNDERX=y
+CONFIG_GRACE_PERIOD=y
+# CONFIG_GRO_CELLS is not set
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
+CONFIG_HAVE_ARCH_AUDITSYSCALL=y
+CONFIG_HAVE_ARCH_BITREVERSE=y
+CONFIG_HAVE_ARCH_HUGE_VMAP=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KASAN=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
+CONFIG_HAVE_ARCH_VMAP_STACK=y
+CONFIG_HAVE_ARM_SMCCC=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_CC_STACKPROTECTOR=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_HAVE_CMPXCHG_DOUBLE=y
+CONFIG_HAVE_CMPXCHG_LOCAL=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_BUGVERBOSE=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_EBPF_JIT=y
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_GENERIC_GUP=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_MEMORY_PRESENT=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_PATA_PLATFORM=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PERF_REGS=y
+CONFIG_HAVE_PERF_USER_STACK_DUMP=y
+CONFIG_HAVE_RCU_TABLE_FREE=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_SETUP_PER_CPU_AREA=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_UID16=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HIBERNATE_CALLBACKS=y
+CONFIG_HIBERNATION=y
+CONFIG_HOLES_IN_ZONE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_HWSPINLOCK=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_CAVIUM=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_MUX=y
+CONFIG_I2C_SMBUS=y
+CONFIG_I2C_THUNDERX=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+# CONFIG_IMA is not set
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_INTEGRITY=y
+CONFIG_INTEGRITY_AUDIT=y
+# CONFIG_INTEGRITY_SIGNATURE is not set
+CONFIG_IOMMU_HELPER=y
+# CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_DHCP=y
+# CONFIG_IP_PNP_RARP is not set
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FASTEOI_HIERARCHY_HANDLERS=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_TIME_ACCOUNTING=y
+CONFIG_IRQ_WORK=y
+# CONFIG_ISDN is not set
+CONFIG_JBD2=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KEXEC=y
+CONFIG_KEXEC_CORE=y
+CONFIG_KEYS=y
+CONFIG_KEYS_COMPAT=y
+CONFIG_KSM=y
+# CONFIG_LEDS_TRIGGERS is not set
+CONFIG_LIBFDT=y
+CONFIG_LOCKD=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_CAVIUM=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_THUNDER=y
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
+CONFIG_MEMCG_SWAP_ENABLED=y
+CONFIG_MEMORY_BALLOON=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MEMTEST=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_CAVIUM_THUNDERX=y
+# CONFIG_MMC_TIFM_SD is not set
+CONFIG_MODULES_USE_ELF_RELA=y
+# CONFIG_MTD is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_MULTIPLE_NODES=y
+CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+# CONFIG_NETLABEL is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_CLS_CGROUP is not set
+CONFIG_NET_FLOW_LIMIT=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_VENDOR_AURORA is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_BROCADE is not set
+# 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_EXAR is not set
+# CONFIG_NET_VENDOR_EZCHIP 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_MICROCHIP 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_VENDOR_QLOGIC is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_RDC is not set
+# CONFIG_NET_VENDOR_REALTEK is not set
+# CONFIG_NET_VENDOR_RENESAS 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_SMSC is not set
+# CONFIG_NET_VENDOR_SOLARFLARE is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SUN is not set
+# CONFIG_NET_VENDOR_SYNOPSYS 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_NFS_FS=y
+CONFIG_NFS_USE_KERNEL_DNS=y
+# CONFIG_NFS_USE_LEGACY_DNS is not set
+CONFIG_NFS_V4=y
+CONFIG_NFS_V4_1=y
+CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN="kernel.org"
+# CONFIG_NFS_V4_1_MIGRATION is not set
+CONFIG_NFS_V4_2=y
+CONFIG_NFS_V4_SECURITY_LABEL=y
+CONFIG_NLS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NODES_SHIFT=2
+CONFIG_NO_BOOTMEM=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=64
+CONFIG_NUMA=y
+CONFIG_NUMA_BALANCING=y
+CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
+CONFIG_NVMEM=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_ADDRESS_PCI=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_NET=y
+CONFIG_OF_NUMA=y
+CONFIG_OF_PCI=y
+CONFIG_OF_PCI_IRQ=y
+CONFIG_OF_RESERVED_MEM=y
+CONFIG_OID_REGISTRY=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_OPTEE=y
+CONFIG_PADATA=y
+CONFIG_PAGE_COUNTER=y
+CONFIG_PARAVIRT=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+# CONFIG_PCIE_KIRIN is not set
+CONFIG_PCIE_PME=y
+CONFIG_PCI_ATS=y
+CONFIG_PCI_BUS_ADDR_T_64BIT=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_ECAM=y
+# CONFIG_PCI_HISI is not set
+CONFIG_PCI_HOST_COMMON=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCI_HOST_THUNDER_ECAM=y
+CONFIG_PCI_HOST_THUNDER_PEM=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+# CONFIG_PCI_XGENE is not set
+CONFIG_PGTABLE_LEVELS=4
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+# CONFIG_PHY_XGENE is not set
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_PM_STD_PARTITION=""
+CONFIG_PNFS_FILE_LAYOUT=y
+CONFIG_PNFS_FLEXFILE_LAYOUT=m
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_XGENE=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
+CONFIG_PRINT_QUOTA_WARNING=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_PROC_VMCORE=y
+CONFIG_PROFILING=y
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+CONFIG_QUOTA=y
+CONFIG_QUOTACTL=y
+# CONFIG_QUOTA_NETLINK_INTERFACE is not set
+CONFIG_RADIX_TREE_MULTIORDER=y
+# CONFIG_RANDOMIZE_BASE is not set
+CONFIG_RAS=y
+CONFIG_RATIONAL=y
+CONFIG_RCU_NEED_SEGCBLIST=y
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_REBOOT_MODE=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGMAP_SPI=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_ROOT_NFS=y
+CONFIG_RPS=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_DS1672=y
+CONFIG_RTC_I2C_AND_SPI=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_SATA_AHCI=y
+CONFIG_SATA_AHCI_PLATFORM=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_SCHED_INFO=y
+CONFIG_SCHED_MC=y
+CONFIG_SCSI=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SCSI_SAS_ATA=y
+CONFIG_SCSI_SAS_ATTRS=y
+CONFIG_SCSI_SAS_HOST_SMP=y
+CONFIG_SCSI_SAS_LIBSAS=y
+CONFIG_SECCOMP=y
+CONFIG_SECCOMP_FILTER=y
+CONFIG_SECURITY=y
+# CONFIG_SECURITY_APPARMOR is not set
+# CONFIG_SECURITY_LOADPIN is not set
+# CONFIG_SECURITY_NETWORK is not set
+# CONFIG_SECURITY_PATH is not set
+# CONFIG_SECURITY_SMACK is not set
+# CONFIG_SECURITY_TOMOYO is not set
+# CONFIG_SECURITY_WRITABLE_HOOKS is not set
+# CONFIG_SECURITY_YAMA is not set
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_XILINX_PS_UART=y
+CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_THUNDERX=y
+CONFIG_SRAM=y
+CONFIG_SRCU=y
+CONFIG_SUNRPC=y
+CONFIG_SUNRPC_BACKCHANNEL=y
+CONFIG_SUNRPC_GSS=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+# CONFIG_SW_SYNC is not set
+CONFIG_SYNC_FILE=y
+CONFIG_SYSCON_REBOOT_MODE=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYSVIPC_COMPAT=y
+CONFIG_SYS_SUPPORTS_HUGETLBFS=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+CONFIG_TEE=y
+CONFIG_THIN_ARCHIVES=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_THUNDER_NIC_BGX=y
+CONFIG_THUNDER_NIC_PF=y
+CONFIG_THUNDER_NIC_RGX=y
+CONFIG_THUNDER_NIC_VF=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
+# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
+CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_USB=y
+CONFIG_USB_COMMON=y
+# CONFIG_USB_EHCI_HCD is not set
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_USE_PERCPU_NUMA_NODE_ID=y
+CONFIG_VIRTIO=y
+CONFIG_VIRTIO_BALLOON=y
+# CONFIG_VIRTIO_BLK is not set
+# CONFIG_VIRTIO_CONSOLE is not set
+CONFIG_VIRTIO_MMIO=y
+# CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set
+# CONFIG_VIRTIO_NET is not set
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_PCI_LEGACY=y
+# CONFIG_VLAN_8021Q is not set
+CONFIG_VMAP_STACK=y
+CONFIG_WATCHDOG_CORE=y
+# CONFIG_WIRELESS is not set
+# CONFIG_WLAN is not set
+CONFIG_XPS=y
diff --git a/target/linux/octeontx/image/Makefile b/target/linux/octeontx/image/Makefile
new file mode 100644
index 0000000000..203f0ea5c6
--- /dev/null
+++ b/target/linux/octeontx/image/Makefile
@@ -0,0 +1,21 @@
+#
+# Copyright (C) 2018 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/image.mk
+
+define Image/Build/Initramfs
+	$(CP) $(KERNEL_BUILD_DIR)/vmlinux $(BIN_DIR)/$(IMG_PREFIX)-vmlinux
+	$(CP) $(KERNEL_BUILD_DIR)/vmlinux-initramfs $(BIN_DIR)/$(IMG_PREFIX)-vmlinux-initramfs
+endef
+
+define Image/Build
+	$(call Image/Build/$(1))
+	cp $(KDIR)/root.$(1) $(BIN_DIR)/$(IMG_PREFIX)-$(1).img
+	cp $(KDIR)/vmlinux $(BIN_DIR)/$(IMG_PREFIX)-vmlinux
+endef
+
+$(eval $(call BuildImage))
diff --git a/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch b/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch
new file mode 100644
index 0000000000..362f4bc7ed
--- /dev/null
+++ b/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch
@@ -0,0 +1,148 @@
+From 69a99101748bb1bdb2730393ef48bc152c4d244a Mon Sep 17 00:00:00 2001
+From: Tim Harvey <tharvey@gateworks.com>
+Date: Tue, 12 Dec 2017 12:49:55 -0800
+Subject: [PATCH] net: thunderx: add support for rgmii internal delay modes
+
+The XCV_DLL_CTL is being configured with the assumption that
+phy-mode is rgmii-txid (PHY_INTERFACE_MODE_RGMII_TXID) which is not always
+the case.
+
+This patch parses the phy-mode property and uses it to configure CXV_DLL_CTL
+properly.
+
+Signed-off-by: Tim Harvey <tharvey@gateworks.com>
+---
+ drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 13 +++++++---
+ drivers/net/ethernet/cavium/thunder/thunder_bgx.h |  2 +-
+ drivers/net/ethernet/cavium/thunder/thunder_xcv.c | 31 ++++++++++++++++++-----
+ 3 files changed, 35 insertions(+), 11 deletions(-)
+
+diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+index 5e5c4d7..805c02a 100644
+--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+@@ -55,6 +55,7 @@ struct bgx {
+ 	struct pci_dev		*pdev;
+ 	bool                    is_dlm;
+ 	bool                    is_rgx;
++	int			phy_mode;
+ };
+ 
+ static struct bgx *bgx_vnic[MAX_BGX_THUNDER];
+@@ -841,12 +842,12 @@ static void bgx_poll_for_link(struct work_struct *work)
+ 	queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 2);
+ }
+ 
+-static int phy_interface_mode(u8 lmac_type)
++static int phy_interface_mode(struct bgx *bgx, u8 lmac_type)
+ {
+ 	if (lmac_type == BGX_MODE_QSGMII)
+ 		return PHY_INTERFACE_MODE_QSGMII;
+ 	if (lmac_type == BGX_MODE_RGMII)
+-		return PHY_INTERFACE_MODE_RGMII;
++		return bgx->phy_mode;
+ 
+ 	return PHY_INTERFACE_MODE_SGMII;
+ }
+@@ -912,7 +913,8 @@ static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid)
+ 
+ 		if (phy_connect_direct(&lmac->netdev, lmac->phydev,
+ 				       bgx_lmac_handler,
+-				       phy_interface_mode(lmac->lmac_type)))
++				       phy_interface_mode(bgx,
++							  lmac->lmac_type)))
+ 			return -ENODEV;
+ 
+ 		phy_start_aneg(lmac->phydev);
+@@ -1287,6 +1289,8 @@ static int bgx_init_of_phy(struct bgx *bgx)
+ 		bgx->lmac[lmac].lmacid = lmac;
+ 
+ 		phy_np = of_parse_phandle(node, "phy-handle", 0);
++		if (phy_np)
++			bgx->phy_mode = of_get_phy_mode(phy_np);
+ 		/* If there is no phy or defective firmware presents
+ 		 * this cortina phy, for which there is no driver
+ 		 * support, ignore it.
+@@ -1390,7 +1394,6 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 		bgx->max_lmac = 1;
+ 		bgx->bgx_id = MAX_BGX_PER_CN81XX - 1;
+ 		bgx_vnic[bgx->bgx_id] = bgx;
+-		xcv_init_hw();
+ 	}
+ 
+ 	/* On 81xx all are DLMs and on 83xx there are 3 BGX QLMs and one
+@@ -1407,6 +1410,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 	if (err)
+ 		goto err_enable;
+ 
++	if (bgx->is_rgx)
++		xcv_init_hw(bgx->phy_mode);
+ 	bgx_init_hw(bgx);
+ 
+ 	/* Enable all LMACs */
+diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+index 23acdc5..2bba9d1 100644
+--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+@@ -226,7 +226,7 @@ void bgx_lmac_internal_loopback(int node, int bgx_idx,
+ void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause);
+ void bgx_lmac_set_pfc(int node, int bgx_idx, int lmacid, void *pause);
+ 
+-void xcv_init_hw(void);
++void xcv_init_hw(int phy_mode);
+ void xcv_setup_link(bool link_up, int link_speed);
+ 
+ u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx);
+diff --git a/drivers/net/ethernet/cavium/thunder/thunder_xcv.c b/drivers/net/ethernet/cavium/thunder/thunder_xcv.c
+index 578c7f8..7e0c4cb 100644
+--- a/drivers/net/ethernet/cavium/thunder/thunder_xcv.c
++++ b/drivers/net/ethernet/cavium/thunder/thunder_xcv.c
+@@ -65,7 +65,7 @@ MODULE_LICENSE("GPL v2");
+ MODULE_VERSION(DRV_VERSION);
+ MODULE_DEVICE_TABLE(pci, xcv_id_table);
+ 
+-void xcv_init_hw(void)
++void xcv_init_hw(int phy_mode)
+ {
+ 	u64  cfg;
+ 
+@@ -81,12 +81,31 @@ void xcv_init_hw(void)
+ 	/* Wait for DLL to lock */
+ 	msleep(1);
+ 
+-	/* Configure DLL - enable or bypass
+-	 * TX no bypass, RX bypass
+-	 */
++	/* enable/bypass DLL providing MAC based internal TX/RX delays */
+ 	cfg = readq_relaxed(xcv->reg_base + XCV_DLL_CTL);
+-	cfg &= ~0xFF03;
+-	cfg |= CLKRX_BYP;
++	cfg &= ~0xffff00;
++	switch (phy_mode) {
++	/* RX and TX delays are added by the MAC */
++	case PHY_INTERFACE_MODE_RGMII:
++		break;
++	/* internal RX and TX delays provided by the PHY */
++	case PHY_INTERFACE_MODE_RGMII_ID:
++		cfg |= CLKRX_BYP;
++		cfg |= CLKTX_BYP;
++		break;
++	/* internal RX delay provided by the PHY, the MAC
++	 * should not add an RX delay in this case
++	 */
++	case PHY_INTERFACE_MODE_RGMII_RXID:
++		cfg |= CLKRX_BYP;
++		break;
++	/* internal TX delay provided by the PHY, the MAC
++	 * should not add an TX delay in this case
++	 */
++	case PHY_INTERFACE_MODE_RGMII_TXID:
++		cfg |= CLKRX_BYP;
++		break;
++	}
+ 	writeq_relaxed(cfg, xcv->reg_base + XCV_DLL_CTL);
+ 
+ 	/* Enable compensation controller and force the
+-- 
+2.7.4
+
diff --git a/target/linux/octeontx/patches-4.14/0001-net-thunderx-workaround-BGX-TX-Underflow-issue.patch b/target/linux/octeontx/patches-4.14/0001-net-thunderx-workaround-BGX-TX-Underflow-issue.patch
new file mode 100644
index 0000000000..db57f6dcca
--- /dev/null
+++ b/target/linux/octeontx/patches-4.14/0001-net-thunderx-workaround-BGX-TX-Underflow-issue.patch
@@ -0,0 +1,117 @@
+From b1e7791e688620c9bb8476ac2d0bc99abeb7f825 Mon Sep 17 00:00:00 2001
+From: Tim Harvey <tharvey@gateworks.com>
+Date: Fri, 29 Dec 2017 16:48:04 -0800
+Subject: [PATCH] net: thunderx: workaround BGX TX Underflow issue
+
+While it is not yet understood why a TX underflow can easily occur
+for SGMII interfaces resulting in a TX wedge. It has been found that
+disabling/re-enabling the LMAC resolves the issue.
+
+Signed-off-by: Tim Harvey <tharvey@gateworks.com>
+---
+ drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 54 +++++++++++++++++++++++
+ drivers/net/ethernet/cavium/thunder/thunder_bgx.h |  9 ++++
+ 2 files changed, 63 insertions(+)
+
+diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+index 805c02a..0690966 100644
+--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+@@ -1344,6 +1344,54 @@ static int bgx_init_phy(struct bgx *bgx)
+ 	return bgx_init_of_phy(bgx);
+ }
+ 
++static irqreturn_t bgx_intr_handler(int irq, void *data)
++{
++	struct bgx *bgx = (struct bgx *)data;
++	struct device *dev = &bgx->pdev->dev;
++	u64 status, val;
++	int lmac;
++
++	for (lmac = 0; lmac < bgx->lmac_count; lmac++) {
++		status = bgx_reg_read(bgx, lmac, BGX_GMP_GMI_TXX_INT);
++		if (status & GMI_TXX_INT_UNDFLW) {
++			dev_err(dev, "BGX%d lmac%d UNDFLW\n", bgx->bgx_id,
++				lmac);
++			val = bgx_reg_read(bgx, lmac, BGX_CMRX_CFG);
++			val &= ~CMR_EN;
++			bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val);
++			val |= CMR_EN;
++			bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val);
++		}
++		/* clear interrupts */
++		bgx_reg_write(bgx, lmac, BGX_GMP_GMI_TXX_INT, status);
++	}
++
++	return IRQ_HANDLED;
++}
++
++static int bgx_register_intr(struct pci_dev *pdev)
++{
++	struct bgx *bgx = pci_get_drvdata(pdev);
++	struct device *dev = &pdev->dev;
++	int num_vec, ret;
++	char irq_name[32];
++
++	/* Enable MSI-X */
++	num_vec = pci_msix_vec_count(pdev);
++	ret = pci_alloc_irq_vectors(pdev, num_vec, num_vec, PCI_IRQ_MSIX);
++	if (ret < 0) {
++		dev_err(dev, "Req for #%d msix vectors failed\n", num_vec);
++		return 1;
++	}
++	sprintf(irq_name, "BGX%d", bgx->bgx_id);
++	ret = request_irq(pci_irq_vector(pdev, GMPX_GMI_TX_INT),
++		bgx_intr_handler, 0, irq_name, bgx);
++	if (ret)
++		return 1;
++
++	return 0;
++}
++
+ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ {
+ 	int err;
+@@ -1414,6 +1462,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 		xcv_init_hw(bgx->phy_mode);
+ 	bgx_init_hw(bgx);
+ 
++	bgx_register_intr(pdev);
++
+ 	/* Enable all LMACs */
+ 	for (lmac = 0; lmac < bgx->lmac_count; lmac++) {
+ 		err = bgx_lmac_enable(bgx, lmac);
+@@ -1424,6 +1474,10 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 				bgx_lmac_disable(bgx, --lmac);
+ 			goto err_enable;
+ 		}
++
++		/* enable TX FIFO Underflow interrupt */
++		bgx_reg_modify(bgx, lmac, BGX_GMP_GMI_TXX_INT_ENA_W1S,
++			       GMI_TXX_INT_UNDFLW);
+ 	}
+ 
+ 	return 0;
+diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+index 2bba9d1..be9148f9 100644
+--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+@@ -179,6 +179,15 @@
+ #define BGX_GMP_GMI_TXX_BURST		0x38228
+ #define BGX_GMP_GMI_TXX_MIN_PKT		0x38240
+ #define BGX_GMP_GMI_TXX_SGMII_CTL	0x38300
++#define BGX_GMP_GMI_TXX_INT		0x38500
++#define BGX_GMP_GMI_TXX_INT_W1S		0x38508
++#define BGX_GMP_GMI_TXX_INT_ENA_W1C	0x38510
++#define BGX_GMP_GMI_TXX_INT_ENA_W1S	0x38518
++#define  GMI_TXX_INT_PTP_LOST			BIT_ULL(4)
++#define  GMI_TXX_INT_LATE_COL			BIT_ULL(3)
++#define  GMI_TXX_INT_XSDEF			BIT_ULL(2)
++#define  GMI_TXX_INT_XSCOL			BIT_ULL(1)
++#define  GMI_TXX_INT_UNDFLW			BIT_ULL(0)
+ 
+ #define BGX_MSIX_VEC_0_29_ADDR		0x400000 /* +(0..29) << 4 */
+ #define BGX_MSIX_VEC_0_29_CTL		0x400008
+-- 
+2.7.4
+