target/octeon: Add Linux 4.19 support

This commit adds support for Linux 4.19 kernel, various cleanups
listed below.

Drop 170-cisco-hack.patch as these devices never seems to have been
supported.

Unset kernel symbols:

* CONFIG_CAVIUM_CN63XXP1=y
  No supported hardware uses CN63XXP1 and it causes "slight decrease in
  performance"
  Source: https://cateee.net/lkddb/web-lkddb/CAVIUM_CN63XXP1.html

* CONFIG_USB_OCTEON_EHCI=y
  CONFIG_USB_OCTEON_OHCI=y
  Deprecated
  Source: https://cateee.net/lkddb/web-lkddb/USB_OCTEON_EHCI.html
  https://cateee.net/lkddb/web-lkddb/USB_OCTEON_OHCI.html

Removed kernel symbols:

* # CONFIG_ARCH_HIBERNATION_POSSIBLE=y
* CONFIG_ARCH_SUSPEND_POSSIBLE=y
  These are not in if you do a vanilla config of a MIPS Octeon kernel
  and I can't find any references about support on this platform.

* # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
* CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
  No need to have this in by default, not defined in most other targets

* CONFIG_CRASH_CORE=y
  Can't find any documentation why this should be enabled by default

* CONFIG_DEBUG_INFO=y
  Set by https://github.com/openwrt/openwrt/blob/master/config/Config-kernel.in#L134

* CONFIG_DEBUG_SPINLOCK=y
  No need to have this in by default

* CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
  Already set by default
  Source: https://cateee.net/lkddb/web-lkddb/DEFAULT_HUNG_TASK_TIMEOUT.html

* CONFIG_DETECT_HUNG_TASK=y
  No need to have this in by default, not defined in most other targets

* CONFIG_HAVE_DEBUG_KMEMLEAK=y
  No need to have this in by default, not defined in most other targets

* CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
  No need to have this in by default

* CONFIG_HAVE_IDE=y
  None of the supported devices have IDE

* CONFIG_HZ=250
* # CONFIG_HZ_100 is not set
* CONFIG_HZ_250=y
  This is broken with generic config

* CONFIG_KALLSYMS=y
  No need to have this in by default, not defined in most other targets

* CONFIG_KEXEC=y
* CONFIG_KEXEC_CORE=y
  No need to have this in by default, not defined in most other targets

* CONFIG_HAVE_KVM=y
  No need to have this in by default

* CONFIG_SCHED_DEBUG=y
  No need to have this in by default, not defined in most other targets

* CONFIG_SYSFS_DEPRECATED=y
  Deprecated symbol
  Source: https://cateee.net/lkddb/web-lkddb/SYSFS_DEPRECATED.html

* CONFIG_SYSFS_DEPRECATED_V2=y
  Discouraged usage in general
  Source: https://cateee.net/lkddb/web-lkddb/SYSFS_DEPRECATED_V2.html

* CONFIG_UNINLINE_SPIN_UNLOCK=y
  No need to have this in by default, not defined in most other targets
  Source: https://github.com/openSUSE/kernel/blob/master/lib/Kconfig.debug#L1137

* CONFIG_ZLIB_INFLATE=y
  No need to have this in by default, not defined in most other targets

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

target/linux/octeon/config-4.19

@@ -0,0 +1,280 @@
+CONFIG_64BIT=y
+CONFIG_ARCH_BINFMT_ELF_STATE=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_DISCARD_MEMBLOCK=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_ARCH_HAS_PHYS_TO_DMA=y
+CONFIG_ARCH_MMAP_RND_BITS=12
+CONFIG_ARCH_MMAP_RND_BITS_MAX=18
+CONFIG_ARCH_MMAP_RND_BITS_MIN=12
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
+CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
+CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
+CONFIG_BINFMT_ELF32=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_BLOCK_COMPAT=y
+CONFIG_BUILTIN_DTB=y
+# CONFIG_CAVIUM_CN63XXP1 is not set
+CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE=2
+CONFIG_CAVIUM_OCTEON_LOCK_L2=y
+CONFIG_CAVIUM_OCTEON_LOCK_L2_EXCEPTION=y
+CONFIG_CAVIUM_OCTEON_LOCK_L2_INTERRUPT=y
+CONFIG_CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT=y
+CONFIG_CAVIUM_OCTEON_LOCK_L2_MEMCPY=y
+CONFIG_CAVIUM_OCTEON_LOCK_L2_TLB=y
+CONFIG_CAVIUM_OCTEON_SOC=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMPAT=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_COMPAT_NETLINK_MESSAGES=y
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_CPU_CAVIUM_OCTEON=y
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_RIXI=y
+CONFIG_CPU_HAS_SYNC=y
+# CONFIG_CPU_LITTLE_ENDIAN is not set
+CONFIG_CPU_MIPSR2=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_FPU=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_SUPPORTS_64BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CPU_SUPPORTS_HUGEPAGES=y
+CONFIG_CRAMFS=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_MD5_OCTEON is not set
+CONFIG_CRYPTO_NULL2=y
+CONFIG_CRYPTO_RNG2=y
+# CONFIG_CRYPTO_SHA1_OCTEON is not set
+# CONFIG_CRYPTO_SHA256_OCTEON is not set
+# CONFIG_CRYPTO_SHA512_OCTEON is not set
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_DMA_DIRECT_OPS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_EXT4_FS=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_FAT_FS=y
+CONFIG_FIXED_PHY=y
+CONFIG_FRAME_WARN=2048
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_OCTEON=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAS_RAPIDIO=y
+CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
+CONFIG_HAVE_ARCH_COMPILER_H=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_COPY_THREAD_TLS=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_EBPF_JIT=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_IRQ_EXIT_ON_IRQ_STACK=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_MEMORY_PRESENT=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HOLES_IN_ZONE=y
+# CONFIG_HUGETLBFS is not set
+CONFIG_HW_HAS_PCI=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_OCTEON=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_IMAGE_CMDLINE_HACK=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_CAVIUM=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_OCTEON=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS32_COMPAT=y
+CONFIG_MIPS32_N32=y
+CONFIG_MIPS32_O32=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+# CONFIG_MIPS_CMDLINE_DTB_EXTEND is not set
+CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
+# CONFIG_MIPS_CMDLINE_FROM_DTB is not set
+# CONFIG_MIPS_ELF_APPENDED_DTB is not set
+CONFIG_MIPS_L1_CACHE_SHIFT=7
+CONFIG_MIPS_L1_CACHE_SHIFT_7=y
+# CONFIG_MIPS_NO_APPENDED_DTB is not set
+CONFIG_MIPS_NR_CPU_NR_MAP=1024
+CONFIG_MIPS_NR_CPU_NR_MAP_1024=y
+CONFIG_MIPS_PGD_C0_CONTEXT=y
+CONFIG_MIPS_RAW_APPENDED_DTB=y
+CONFIG_MIPS_SPRAM=y
+# CONFIG_MIPS_VA_BITS_48 is not set
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_CAVIUM_OCTEON=y
+# CONFIG_MMC_TIFM_SD is not set
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MODULES_USE_ELF_RELA=y
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NLS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+CONFIG_NR_CPUS=16
+CONFIG_NR_CPUS_DEFAULT_64=y
+CONFIG_NVMEM=y
+CONFIG_OCTEON_ETHERNET=y
+# CONFIG_OCTEON_ILM is not set
+CONFIG_OCTEON_MGMT_ETHERNET=y
+CONFIG_OCTEON_USB=y
+CONFIG_OCTEON_WDT=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_MDIO=y
+CONFIG_OF_NET=y
+CONFIG_PADATA=y
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RCU_NEED_SEGCBLIST=y
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_RELAY=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_SCSI=y
+CONFIG_SECCOMP=y
+CONFIG_SECCOMP_FILTER=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_STATIC=y
+CONFIG_SRCU=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYSVIPC_COMPAT=y
+CONFIG_SYS_HAS_CPU_CAVIUM_OCTEON=y
+CONFIG_SYS_HAS_EARLY_PRINTK=y
+CONFIG_SYS_SUPPORTS_64BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
+CONFIG_SYS_SUPPORTS_HOTPLUG_CPU=y
+CONFIG_SYS_SUPPORTS_HUGETLBFS=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_SYS_SUPPORTS_RELOCATABLE=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_USB=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_EHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_HCD_PLATFORM=y
+# CONFIG_USB_OCTEON_EHCI is not set
+# CONFIG_USB_OCTEON_OHCI is not set
+CONFIG_USB_OHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PLATFORM=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USE_OF=y
+CONFIG_VFAT_FS=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_WEAK_ORDERING=y
+CONFIG_XPS=y
+CONFIG_ZONE_DMA32=y

target/linux/octeon/patches-4.19/100-ubnt_edgerouter2_support.patch

@@ -0,0 +1,31 @@
+--- a/arch/mips/include/asm/octeon/cvmx-bootinfo.h
++++ b/arch/mips/include/asm/octeon/cvmx-bootinfo.h
+@@ -295,6 +295,8 @@ enum cvmx_board_types_enum {
+ 	 */
+ 	CVMX_BOARD_TYPE_CUST_PRIVATE_MIN = 20001,
+ 	CVMX_BOARD_TYPE_UBNT_E100 = 20002,
++	CVMX_BOARD_TYPE_UBNT_E200 = 20003,
++	CVMX_BOARD_TYPE_UBNT_E220 = 20005,
+ 	CVMX_BOARD_TYPE_CUST_DSR1000N = 20006,
+ 	CVMX_BOARD_TYPE_KONTRON_S1901 = 21901,
+ 	CVMX_BOARD_TYPE_CUST_PRIVATE_MAX = 30000,
+@@ -396,6 +398,8 @@ static inline const char *cvmx_board_typ
+ 		    /* Customer private range */
+ 		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_CUST_PRIVATE_MIN)
+ 		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_UBNT_E100)
++		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_UBNT_E200)
++		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_UBNT_E220)
+ 		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_CUST_DSR1000N)
+ 		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_KONTRON_S1901)
+ 		ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_CUST_PRIVATE_MAX)
+--- a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
++++ b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
+@@ -173,6 +173,8 @@ int cvmx_helper_board_get_mii_address(in
+ 			return 7 - ipd_port;
+ 		else
+ 			return -1;
++	case CVMX_BOARD_TYPE_UBNT_E200:
++		return -1;
+ 	case CVMX_BOARD_TYPE_KONTRON_S1901:
+ 		if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
+ 			return 1;

target/linux/octeon/patches-4.19/110-er200-ethernet_probe_order.patch

@@ -0,0 +1,34 @@
+--- a/drivers/staging/octeon/ethernet.c
++++ b/drivers/staging/octeon/ethernet.c
+@@ -673,6 +673,7 @@ static int cvm_oct_probe(struct platform
+ 	int interface;
+ 	int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
+ 	int qos;
++	int i;
+ 	struct device_node *pip;
+ 	int mtu_overhead = ETH_HLEN + ETH_FCS_LEN;
+ 
+@@ -796,13 +797,19 @@ static int cvm_oct_probe(struct platform
+ 	}
+ 
+ 	num_interfaces = cvmx_helper_get_number_of_interfaces();
+-	for (interface = 0; interface < num_interfaces; interface++) {
+-		cvmx_helper_interface_mode_t imode =
+-		    cvmx_helper_interface_get_mode(interface);
+-		int num_ports = cvmx_helper_ports_on_interface(interface);
++	for (i = 0; i < num_interfaces; i++) {
++		cvmx_helper_interface_mode_t imode;
++		int interface;
++		int num_ports;
+ 		int port;
+ 		int port_index;
+ 
++		interface = i;
++		if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_UBNT_E200)
++			interface = num_interfaces - (i + 1);
++
++		num_ports = cvmx_helper_ports_on_interface(interface);
++		imode = cvmx_helper_interface_get_mode(interface);
+ 		for (port_index = 0,
+ 		     port = cvmx_helper_get_ipd_port(interface, 0);
+ 		     port < cvmx_helper_get_ipd_port(interface, num_ports);

target/linux/octeon/patches-4.19/120-cmdline-hack.patch

@@ -0,0 +1,47 @@
+--- a/arch/mips/cavium-octeon/setup.c
++++ b/arch/mips/cavium-octeon/setup.c
+@@ -650,6 +650,35 @@ void octeon_user_io_init(void)
+ 	write_c0_derraddr1(0);
+ }
+ 
++#ifdef CONFIG_IMAGE_CMDLINE_HACK
++extern char __image_cmdline[];
++
++static int __init octeon_use_image_cmdline(void)
++{
++       char *p = __image_cmdline;
++       int replace = 0;
++
++       if (*p == '-') {
++               replace = 1;
++               p++;
++       }
++
++       if (*p == '\0')
++               return 0;
++
++       if (replace) {
++               strlcpy(arcs_cmdline, p, sizeof(arcs_cmdline));
++       } else {
++               strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
++               strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
++       }
++
++       return 1;
++}
++#else
++static inline int octeon_use_image_cmdline(void) { return 0; }
++#endif
++
+ /**
+  * Early entry point for arch setup
+  */
+@@ -894,6 +923,8 @@ void __init prom_init(void)
+ 		}
+ 	}
+ 
++	octeon_use_image_cmdline();
++
+ 	if (strstr(arcs_cmdline, "console=") == NULL) {
+ 		if (octeon_uart == 1)
+ 			strcat(arcs_cmdline, " console=ttyS1,115200");