Below is the relevant output from u-boot (arm64) loading the kernel (I believe it has all pertinent information): ## Booting kernel from Legacy Image at 4002000000 ... Image Name: kernel 3.16.0-33-generic Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 11536696 Bytes = 11 MiB Load Address: 00080000 Entry Point: 00080000 Verifying Checksum ... OK ## Loading init Ramdisk from Legacy Image at 4004000000 ... Image Name: ramdisk 3.16.0-33-generic Image Type: ARM Linux RAMDisk Image (gzip compressed) Data Size: 24313751 Bytes = 23.2 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Flattened Device Tree blob at 4003000000 Booting using the fdt blob at 0x0000004003000000 Loading Kernel Image ... OK OK Loading Ramdisk to 43de8d0000, end 43dfffff97 ... OK Loading Device Tree to 0000004000ff9000, end 0000004000fff838 ... OK Fix up GIC node for non-secure access Starting kernel ... L3C: 8MB [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.16.0-33-generic (buildd@templar) (gcc version 4.9.1 (Ubuntu/Linaro 4.9.1-16ubuntu6) ) #44-Ubuntu SMP Thu Mar 12 12:25:12 UTC 2015 (Ubuntu 3.16.0-33.44-generic 3.16.7-ckt7) [ 0.000000] CPU: AArch64 Processor [500f0000] revision 0 [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: UEFI not found. [ 0.000000] PERCPU: Embedded 12 pages/cpu @ffffffc3fff59000 s19520 r8192 d21440 u49152 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4136960 [ 0.000000] Kernel command line: nomodeset iscsi_target_name=iqn.2004-05.com.ubuntu:maas:ephemeral-ubuntu-arm64-xgene-uboot-mustang-utopic-daily iscsi_target_ip=10.228.12.173 iscsi_target_port=3260 iscsi_initiator=hidden-chicken ip=::::hidden-chicken:BOOTIF ro root=/dev/disk/by-path/ip-10.228.12.173:3260-iscsi-iqn.2004-05.com.ubuntu:maas:ephemeral-ubuntu-arm64-xgene-uboot-mustang-utopic-daily-lun-1 overlayroot=tmpfs cloud-config-url=http://10.228.12.173/MAAS/metadata/latest/by-id/node-4a600b98-d370-11e4-a434-00163e634f88/?op=get_preseed log_host=10.228.12.173 log_port=514 xx console=ttyS0,115200 BOOTIF=01-00-01-73-02-08-25 [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Dentry cache hash table entries: 2097152 (order: 12, 16777216 bytes) [ 0.000000] Inode-cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.000000] Memory: 16486692K/16777216K available (6935K kernel code, 754K rwdata, 3016K rodata, 555K init, 757K bss, 290524K reserved) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vmalloc : 0xffffff8000000000 - 0xffffffbbffff0000 (245759 MB) [ 0.000000] vmemmap : 0xffffffbce0000000 - 0xffffffbcee000000 ( 224 MB) [ 0.000000] modules : 0xffffffbffc000000 - 0xffffffc000000000 ( 64 MB) [ 0.000000] memory : 0xffffffc000000000 - 0xffffffc400000000 ( 16384 MB) [ 0.000000] .init : 0xffffffc000a39000 - 0xffffffc000ac3c40 ( 556 kB) [ 0.000000] .text : 0xffffffc000080000 - 0xffffffc000a38dc4 ( 9956 kB) [ 0.000000] .data : 0xffffffc000ac4000 - 0xffffffc000b80938 ( 755 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU dyntick-idle grace-period acceleration is enabled. [ 0.000000] NR_IRQS:64 nr_irqs:64 0 [ 0.000000] Architected cp15 timer(s) running at 50.00MHz (phys). [ 0.000002] sched_clock: 56 bits at 50MHz, resolution 20ns, wraps every 2748779069440ns [ 0.000069] Console: colour dummy device 80x25 [ 0.003113] allocated 67108864 bytes of page_cgroup [ 0.003116] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.003125] Calibrating delay loop (skipped), value calculated using timer frequency.. 100.00 BogoMIPS (lpj=500000) [ 0.003129] pid_max: default: 32768 minimum: 301 [ 0.003167] Security Framework initialized [ 0.003203] AppArmor: AppArmor initialized [ 0.003205] Yama: becoming mindful. [ 0.003266] Mount-cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.003270] Mountpoint-cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.003599] Initializing cgroup subsys memory [ 0.003634] Initializing cgroup subsys devices [ 0.003643] Initializing cgroup subsys freezer [ 0.003648] Initializing cgroup subsys net_cls [ 0.003655] Initializing cgroup subsys blkio [ 0.003661] Initializing cgroup subsys perf_event [ 0.003665] Initializing cgroup subsys net_prio [ 0.003675] Initializing cgroup subsys hugetlb [ 0.003693] ftrace: allocating 25214 entries in 99 pages [ 0.014118] hw perfevents: enabled with arm/armv8-pmuv3 PMU driver, 5 counters available [ 0.014134] EFI services will not be available. [ 0.015996] CPU1: Booted secondary processor [ 0.016142] CPU2: Booted secondary processor [ 0.016280] CPU3: Booted secondary processor [ 0.016411] CPU4: Booted secondary processor [ 0.016547] CPU5: Booted secondary processor [ 0.016678] CPU6: Booted secondary processor [ 0.016814] CPU7: Booted secondary processor [ 0.016843] Brought up 8 CPUs [ 0.016852] SMP: Total of 8 processors activated. [ 0.017122] devtmpfs: initialized [ 0.018851] evm: security.selinux [ 0.018855] evm: security.SMACK64 [ 0.018857] evm: security.SMACK64EXEC [ 0.018858] evm: security.SMACK64TRANSMUTE [ 0.018860] evm: security.SMACK64MMAP [ 0.018861] evm: security.ima [ 0.018863] evm: security.capability [ 0.020537] regulator-dummy: no parameters [ 0.021417] NET: Registered protocol family 16 [ 0.021700] cpuidle: using governor ladder [ 0.021705] cpuidle: using governor menu [ 0.021760] vdso: 2 pages (1 code, 1 data) at base ffffffc000ac9000 [ 0.021779] hw-breakpoint: found 4 breakpoint and 4 watchpoint registers. [ 0.021988] software IO TLB [mem 0x40ffc00000-0x4100000000] (4MB) mapped at [ffffffc0ffc00000-ffffffc0ffffffff] [ 0.022048] Serial: AMBA PL011 UART driver [ 0.054773] vgaarb: loaded [ 0.055173] SCSI subsystem initialized [ 0.055322] usbcore: registered new interface driver usbfs [ 0.055339] usbcore: registered new interface driver hub [ 0.055369] usbcore: registered new device driver usb [ 0.055760] NetLabel: Initializing [ 0.055763] NetLabel: domain hash size = 128 [ 0.055765] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.055784] NetLabel: unlabeled traffic allowed by default [ 0.056006] XGene: PCIe MSI driver v0.1 [ 0.056112] Switched to clocksource arch_sys_counter [ 0.067336] AppArmor: AppArmor Filesystem Enabled [ 0.070325] NET: Registered protocol family 2 [ 0.070646] TCP established hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.070984] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes) [ 0.071350] TCP: Hash tables configured (established 131072 bind 65536) [ 0.071375] TCP: reno registered [ 0.071383] UDP hash table entries: 8192 (order: 6, 262144 bytes) [ 0.071519] UDP-Lite hash table entries: 8192 (order: 6, 262144 bytes) [ 0.071738] NET: Registered protocol family 1 [ 0.071848] Trying to unpack rootfs image as initramfs... [ 0.562201] Freeing initrd memory: 23740K (ffffffc3de8d0000 - ffffffc3dffff000) [ 0.562369] kvm [1]: Using HYP init bounce page @40fe488000 [ 0.562441] kvm [1]: interrupt-controller@780c0000 IRQ25 [ 0.562552] kvm [1]: timer IRQ30 [ 0.562561] kvm [1]: Hyp mode initialized successfully [ 0.563075] futex hash table entries: 2048 (order: 5, 131072 bytes) [ 0.563097] Initialise system trusted keyring [ 0.563148] audit: initializing netlink subsys (disabled) [ 0.563181] audit: type=2000 audit(0.550:1): initialized [ 0.563457] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.565918] zpool: loaded [ 0.565924] zbud: loaded [ 0.566204] VFS: Disk quotas dquot_6.5.2 [ 0.566272] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.567148] fuse init (API version 7.23) [ 0.567300] msgmni has been set to 32246 [ 0.567398] Key type big_key registered [ 0.567732] Key type asymmetric registered [ 0.567738] Asymmetric key parser 'x509' registered [ 0.567817] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 0.567886] io scheduler noop registered [ 0.567891] io scheduler deadline registered (default) [ 0.567977] io scheduler cfq registered [ 0.596168] xgene-pcie 1f2b0000.pcie: (rc) x1 gen-1 link up [ 0.596233] PCI host bridge to bus 0000:00 [ 0.596238] pci_bus 0000:00: root bus resource [io 0x0000-0x10000] [ 0.596242] pci_bus 0000:00: root bus resource [mem 0xe010000000-0xe08fffffff] (bus address [0x10000000-0x8fffffff]) [ 0.596245] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff] [ 0.596311] pci 0000:00:00.0: Hiding X-Gene pci host bridge resources 0000:00:00.0 [ 0.596431] PCI: bus0: Fast back to back transfers disabled [ 0.616174] PCI: bus1: Fast back to back transfers disabled [ 0.616201] pcieport 0000:00:00.0: device [e008:e004] has invalid IRQ; check vendor BIOS [ 0.616279] pci 0000:00:00.0: BAR 14: assigned [mem 0xe010000000-0xe0100fffff] [ 0.616285] pci 0000:01:00.0: BAR 0: assigned [mem 0xe010000000-0xe01000ffff 64bit] [ 0.616308] pci 0000:00:00.0: PCI bridge to [bus 01] [ 0.616314] pci 0000:00:00.0: bridge window [mem 0xe010000000-0xe0100fffff] [ 0.616562] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled [ 0.618731] console [ttyS0] disabled [ 0.618747] 1c020000.serial: ttyS0 at MMIO 0x1c020000 (irq = 108, base_baud = 3125000) is a 16550A [ 1.395620] console [ttyS0] enabled [ 1.401387] brd: module loaded [ 1.405498] loop: module loaded [ 1.408981] libphy: Fixed MDIO Bus: probed [ 1.413058] tun: Universal TUN/TAP device driver, 1.6 [ 1.418090] tun: (C) 1999-2004 Max Krasnyansky