[0000.785] [TegraBoot] (version 23.00.2015.14-mobile-1ef66670) [0000.790] Processing in cold boot mode Bootloader 2 [0000.795] A01Q Bootrom Patch rev = 3 [0000.798] Power-up reason: pmu watchdog [0000.802] No Battery Present [0000.804] Platform has Ddr4 type ram [0000.808] max77620 disabling SD1 Remote Sense [0000.812] Setting Ddr voltage to 1125mv [0000.816] Serial Number of Pmic Max77663: 0x40daf [0000.824] Entering ramdump check [0000.827] Get RamDumpCarveOut = 0x0 [0000.830] RamDumpCarveOut=0x0, RamDumperFlag=0xe59ff3f8 [0000.835] Last reboot was clean, booting normally! [0000.840] Sdram initialization is successful [0000.844] SecureOs Carveout Base=0xff800000 Size=0x00800000 [0000.850] GSC1 Carveout Base=0xff700000 Size=0x00100000 [0000.875] GSC2 Carveout Base=0xff600000 Size=0x00100000 [0000.901] GSC3 Carveout Base=0xff500000 Size=0x00100000 [0000.906] GSC4 Carveout Base=0xff400000 Size=0x00100000 [0000.912] GSC5 Carveout Base=0xff300000 Size=0x00100000 [0000.917] BpmpFw Carveout Base=0xff2c0000 Size=0x00040000 [0000.922] Lp0 Carveout Base=0xff2bf000 Size=0x00001000 [0000.937] RamDump Carveout Base=0xff23f000 Size=0x00080000 [0000.943] Platform-DebugCarveout: 0 [0000.946] Nck Carveout Base=0xff03f000 Size=0x00200000 [0000.995] Using GPT Primary to query partitions [0001.001] Loading Tboot-CPU binary [0001.050] Verifying bootloader in OdmNonSecureSBK mode [0001.060] Bootloader load address is 0xa0000000, entry address is 0xa0000258 [0001.069] Bootloader downloaded successfully. [0001.073] Downloaded Tboot-CPU binary to 0xa0000258 [0001.078] MAX77620_GPIO1 Configured. [0001.082] MAX77620_GPIO5 Configured. [0001.085] CPU power rail is up [0001.088] CPU clock enabled [0001.092] Performing RAM repair [0001.095] Updating A64 Warmreset Address to 0xa00002e9 [0001.114] Bootloader DTB Load Address: 0x83000000 [0001.132] Kernel DTB Load Address: 0x83080000 [0001.137] Loading cboot binary [0001.230] Verifying bootloader in OdmNonSecureSBK mode [0001.318] Bootloader load address is 0x8010fda8, entry address is 0x80110000 [0001.327] Bootloader downloaded successfully. [0001.332] GPT: Partition NOT found ! [0001.335] Find Partition via GPT Failed [0001.339] function NvTbootGetBinaryOffsets: 0x845208 error [0001.344] Error in NvTbootLoadBinary: 0x845208 ! [0001.348] GPT: Partition NOT found ! [0001.352] No FB partition [0001.354] Next binary entry address: 0x80110000 [0001.359] BoardId: 2595 [0001.364] dram memory type is 3 [0001.370] WB0 init successful [0001.397] Bpmp FW successfully loaded [0001.400] Set NvDecSticky Bits [0001.404] GSC1 address : ff700000 [0001.407] GSC2 address : ff600000 [0001.411] GSC3 address : ff500000 [0001.415] GSC4 address : ff400000 [0001.419] GSC5 address : ff300000 [0001.422] GSC MC Settings done [0001.427] TOS old plaintext Image length 61440 [0001.434] *** Secure OS image signature not verified *** [0001.439] Loading and Validation of Secure OS Successful [0001.444] NvTbootPackSdramParams: start. [0001.449] NvTbootPackSdramParams: done. [0001.452] Tegraboot started after 778360 us [0001.456] Basic modules init took 348745 us [0001.461] Sec Bootdevice Read Time = 203 ms, Read Size = 8459 KB [0001.466] Next stage binary read took 14394 us [0001.471] Carveout took 252666 us [0001.474] CPU initialization took 93687 us [0001.478] Total time taken by TegraBoot 709492 us [0001.482] Starting CPU & Halting co-processor 64b[0001.618] LPDDR4 Training: Number of tables = 10 [0001.622] EMC Training (SRC-freq: 204000; DST-freq: 408000) [0001.628] EMC Training Successful [0001.631] EMC Training (SRC-freq: 204000; DST-freq: 665600) [0001.637] EMC Training Successful [0001.640] EMC Training (SRC-freq: 204000; DST-freq: 800000) [0001.651] EMC Training Successful [0001.654] EMC Training (SRC-freq: 204000; DST-freq: 1065600) [0001.677] EMC Training Successful [0001.680] EMC Training (SRC-freq: 204000; DST-freq: 1331200) [0001.702] EMC Training Successful [0001.705] EMC Training (SRC-freq: 204000; DST-freq: 1600000) [0001.724] EMC Training Successful [0001.728] Switching to 800000 KHz Success [0001.761] LPDDR4 Training: Number of tables = 10 U-Boot 2015.07-rc2-g2ac3917 (Nov 09 2015 - 13:12:08 -0800) TEGRA210 Model: NVIDIA P2371-0000 DRAM: 3 GiB MC: Tegra SD/MMC: 0, Tegra SD/MMC: 1 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 2  0 Tegra210 (P2371-0000) # Tegra210 (P2371-0000) # ums 0 mmc 0 UMS: disk start sector: 0x0, count: 0x1d5a000 |/-\|/-\/-\|/-\/-\|/-\/-\|/-\/-\|/-\/-\|/-\/-\|/-\/-\|/-\/-\CTRL+C - Operation aborted Tegra210 (P2371-0000) # Tegra210 (P2371-0000) # env set fdt_copy_node_names /cpus:/psci Tegra210 (P2371-0000) # setenv rootpart 1 Tegra210 (P2371-0000) # setenv devtype mmc Tegra210 (P2371-0000) # setenv devnum 0 Tegra210 (P2371-0000) # part uuid ${devtype} ${devnum}:${rootpart} uuid Tegra210 (P2371-0000) # setenv bootargs ignore_loglevel console=ttyS0,115200n8 earlycon=uart8250,mmio32,0x70006000 rw root=PARTUUID=00000000-0001-0000-788f-a75600000000 rootwait debug earlyprintk init=/bin/bash Tegra210 (P2371-0000) # load ${devtype} ${devnum}:${rootpart} ${kernel_addr_r} /boot/Image.defconfig 16439808 bytes read in 834 ms (18.8 MiB/s) Tegra210 (P2371-0000) # load ${devtype} ${devnum}:${rootpart} ${fdt_addr_r} /boot/tegra210-p2371-0000.dtb 45170 bytes read in 453 ms (96.7 KiB/s) Tegra210 (P2371-0000) # load ${devtype} ${devnum}:${rootpart} ${ramdisk_addr_r} /boot/tegra-ramdisk.img 1627787 bytes read in 495 ms (3.1 MiB/s) Tegra210 (P2371-0000) # ramdisk_size=${filesize} Tegra210 (P2371-0000) # booti ${kernel_addr_r} - ${fdt_addr_r} ## Flattened Device Tree blob at 82000000 Booting using the fdt blob at 0x82000000 Using Device Tree in place at 0000000082000000, end 000000008200e071 Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.13.0-next-20170914-318194-g31fc38c47623 (jonathanh@tamien) (gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)) #1 SMP PREEMPT Wed Sep 13 20:57:02 PDT 2017 [ 0.000000] Boot CPU: AArch64 Processor [411fd071] [ 0.000000] Machine model: NVIDIA Tegra210 P2371 (P2530/P2595) reference design [ 0.000000] debug: ignoring loglevel setting. [ 0.000000] earlycon: uart8250 at MMIO32 0x0000000070006000 (options '') [ 0.000000] bootconsole [uart8250] enabled [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: UEFI not found. [ 0.000000] cma: Reserved 16 MiB at 0x00000000fe000000 [ 0.000000] NUMA: No NUMA configuration found [ 0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x000000013fffffff] [ 0.000000] NUMA: NODE_DATA [mem 0x13ffada80-0x13ffaf57f] [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000080000000-0x00000000ffffffff] [ 0.000000] Normal [mem 0x0000000100000000-0x000000013fffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000080000000-0x00000000ff1fffff] [ 0.000000] node 0: [mem 0x0000000100000000-0x000000013fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x000000013fffffff] [ 0.000000] On node 0 totalpages: 782848 [ 0.000000] DMA zone: 8192 pages used for memmap [ 0.000000] DMA zone: 0 pages reserved [ 0.000000] DMA zone: 520704 pages, LIFO batch:31 [ 0.000000] Normal zone: 4096 pages used for memmap [ 0.000000] Normal zone: 262144 pages, LIFO batch:31 [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: PSCIv0.2 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: MIGRATE_INFO_TYPE not supported. [ 0.000000] random: fast init done [ 0.000000] percpu: Embedded 23 pages/cpu @ffff8000bff4e000 s55552 r8192 d30464 u94208 [ 0.000000] pcpu-alloc: s55552 r8192 d30464 u94208 alloc=23*4096 [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [ 0.000000] Detected PIPT I-cache on CPU0 [ 0.000000] CPU features: enabling workaround for ARM erratum 832075 [ 0.000000] CPU features: enabling workaround for ARM erratum 834220 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 770560 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: ignore_loglevel console=ttyS0,115200n8 earlycon=uart8250,mmio32,0x70006000 rw root=PARTUUID=00000000-0001-0000-788f-a75600000000 rootwait debug earlyprintk init=/bin/bash [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] software IO TLB [mem 0xfa000000-0xfe000000] (64MB) mapped at [ffff80007a000000-ffff80007dffffff] [ 0.000000] Memory: 2982628K/3131392K available (9212K kernel code, 1142K rwdata, 4572K rodata, 1088K init, 402K bss, 132380K reserved, 16384K cma-reserved) [ 0.000000] Virtual kernel memory layout: [ 0.000000] modules : 0xffff000000000000 - 0xffff000008000000 ( 128 MB) [ 0.000000] vmalloc : 0xffff000008000000 - 0xffff7dffbfff0000 (129022 GB) [ 0.000000] .text : 0xffff000008080000 - 0xffff000008980000 ( 9216 KB) [ 0.000000] .rodata : 0xffff000008980000 - 0xffff000008e00000 ( 4608 KB) [ 0.000000] .init : 0xffff000008e00000 - 0xffff000008f10000 ( 1088 KB) [ 0.000000] .data : 0xffff000008f10000 - 0xffff00000902da00 ( 1143 KB) [ 0.000000] .bss : 0xffff00000902da00 - 0xffff000009092470 ( 403 KB) [ 0.000000] fixed : 0xffff7dfffe7fd000 - 0xffff7dfffec00000 ( 4108 KB) [ 0.000000] PCI I/O : 0xffff7dfffee00000 - 0xffff7dffffe00000 ( 16 MB) [ 0.000000] vmemmap : 0xffff7e0000000000 - 0xffff800000000000 ( 2048 GB maximum) [ 0.000000] 0xffff7e0000000000 - 0xffff7e0003000000 ( 48 MB actual) [ 0.000000] memory : 0xffff800000000000 - 0xffff8000c0000000 ( 3072 MB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=4. [ 0.000000] Tasks RCU enabled. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4 [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 [ 0.000000] GIC: Using split EOI/Deactivate mode [ 0.000000] /interrupt-controller@60004000: 192 interrupts forwarded to /interrupt-controller@50041000 [ 0.000000] boot misc1 0x0: expected 0x20 [ 0.000000] (comparison mask = 0xffffff) [ 0.000000] PLL_X already enabled. Postponing set full defaults [ 0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys). [ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns [ 0.000005] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns [ 0.008426] Console: colour dummy device 80x25 [ 0.013073] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=76800) [ 0.023690] pid_max: default: 32768 minimum: 301 [ 0.028540] Security Framework initialized [ 0.035112] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.043757] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) [ 0.051104] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes) [ 0.058068] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes) [ 0.081525] ASID allocator initialised with 65536 entries [ 0.087188] Hierarchical SRCU implementation. [ 0.100654] Speedo Revision 4 [ 0.103744] Tegra Revision: A01 SKU: 1 CPU Process: -22 SoC Process: -22 [ 0.111585] EFI services will not be available. [ 0.124301] smp: Bringing up secondary CPUs ... [ 0.157128] Detected PIPT I-cache on CPU1 [ 0.157170] CPU1: Booted secondary processor [411fd071] [ 0.185191] Detected PIPT I-cache on CPU2 [ 0.185223] CPU2: Booted secondary processor [411fd071] [ 0.213260] Detected PIPT I-cache on CPU3 [ 0.213291] CPU3: Booted secondary processor [411fd071] [ 0.213360] smp: Brought up 1 node, 4 CPUs [ 0.246237] SMP: Total of 4 processors activated. [ 0.251104] CPU features: detected feature: 32-bit EL0 Support [ 0.257328] CPU: All CPU(s) started at EL2 [ 0.261585] alternatives: patching kernel code [ 0.270450] devtmpfs: initialized [ 0.281230] Built 1 zonelists, mobility grouping on. Total pages: 749753 [ 0.288270] Policy zone: Normal [ 0.292538] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.302675] futex hash table entries: 1024 (order: 5, 131072 bytes) [ 0.309320] pinctrl core: initialized pinctrl subsystem [ 0.316242] DMI not present or invalid. [ 0.320555] NET: Registered protocol family 16 [ 0.329202] cpuidle: using governor menu [ 0.334167] vdso: 2 pages (1 code @ ffff000008986000, 1 data @ ffff000008f15000) [ 0.341837] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 0.349909] DMA: preallocated 256 KiB pool for atomic allocations [ 0.357666] Serial: AMBA PL011 UART driver [ 0.384165] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.392017] ACPI: Interpreter disabled. [ 0.396919] vgaarb: loaded [ 0.399954] SCSI subsystem initialized [ 0.404786] libata version 3.00 loaded. [ 0.409013] usbcore: registered new interface driver usbfs [ 0.414754] usbcore: registered new interface driver hub [ 0.420319] usbcore: registered new device driver usb [ 0.426594] pps_core: LinuxPPS API ver. 1 registered [ 0.431745] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 0.441211] PTP clock support registered [ 0.445393] EDAC MC: Ver: 3.0.0 [ 0.448912] dmi: Firmware registration failed. [ 0.453782] Advanced Linux Sound Architecture Driver Initialized. [ 0.460760] clocksource: Switched to clocksource arch_sys_counter [ 0.467205] VFS: Disk quotas dquot_6.6.0 [ 0.471339] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.478594] pnp: PnP ACPI: disabled [ 0.488841] NET: Registered protocol family 2 [ 0.493969] TCP established hash table entries: 32768 (order: 6, 262144 bytes) [ 0.501777] TCP bind hash table entries: 32768 (order: 7, 524288 bytes) [ 0.508896] TCP: Hash tables configured (established 32768 bind 32768) [ 0.515796] UDP hash table entries: 2048 (order: 4, 65536 bytes) [ 0.522079] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes) [ 0.528929] NET: Registered protocol family 1 [ 0.533740] RPC: Registered named UNIX socket transport module. [ 0.539879] RPC: Registered udp transport module. [ 0.544747] RPC: Registered tcp transport module. [ 0.549621] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.556292] PCI: CLS 0 bytes, default 128 [ 0.561042] kvm [1]: 8-bit VMID [ 0.564288] kvm [1]: IDMAP page: 80974000 [ 0.568447] kvm [1]: HYP VA range: 800000000000:ffffffffffff [ 0.575188] kvm [1]: Hyp mode initialized successfully [ 0.580613] kvm [1]: vgic-v2@50044000 [ 0.584515] kvm [1]: vgic interrupt IRQ1 [ 0.588591] kvm [1]: virtual timer IRQ4 [ 0.595282] audit: initializing netlink subsys (disabled) [ 0.601021] audit: type=2000 audit(0.523:1): state=initialized audit_enabled=0 res=1 [ 0.601242] workingset: timestamp_bits=44 max_order=20 bucket_order=0 [ 0.607443] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.608070] NFS: Registering the id_resolver key type [ 0.608095] Key type id_resolver registered [ 0.608098] Key type id_legacy registered [ 0.608109] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 0.608246] 9p: Installing v9fs 9p2000 file system support [ 0.610824] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246) [ 0.610830] io scheduler noop registered [ 0.611014] io scheduler cfq registered (default) [ 0.611019] io scheduler mq-deadline registered [ 0.611022] io scheduler kyber registered [ 0.629382] tegra-apbdma 60020000.dma: Tegra20 APB DMA driver register 32 channels [ 0.631089] tegra-pmc 7000e400.pmc: i2c-thermtrip node not found, emergency thermal reset disabled. [ 0.634827] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.636826] console [ttyS0] disabled [ 0.701374] 70006000.serial: ttyS0 at MMIO 0x70006000 (irq = 313, base_baud = 25500000) is a Tegra [ 0.710689] console [ttyS0] enabled [ 0.710689] console [ttyS0] enabled [ 0.717786] bootconsole [uart8250] disabled [ 0.717786] bootconsole [uart8250] disabled [ 0.726815] SuperH (H)SCI(F) driver initialized [ 0.731620] msm_serial: driver initialized [ 0.736204] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 0.747750] loop: module loaded [ 0.753615] libphy: Fixed MDIO Bus: probed [ 0.758103] tun: Universal TUN/TAP device driver, 1.6 [ 0.763893] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k [ 0.769738] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 0.775702] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k [ 0.782667] igb: Copyright (c) 2007-2014 Intel Corporation. [ 0.788286] igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.4.0-k [ 0.796116] igbvf: Copyright (c) 2009 - 2012 Intel Corporation. [ 0.802279] sky2: driver version 1.30 [ 0.806322] VFIO - User Level meta-driver version: 0.3 [ 0.812415] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.818952] ehci-pci: EHCI PCI platform driver [ 0.823433] ehci-platform: EHCI generic platform driver [ 0.828765] ehci-orion: EHCI orion driver [ 0.832851] ehci-exynos: EHCI EXYNOS driver [ 0.837104] ehci-msm: Qualcomm On-Chip EHCI Host Controller [ 0.842736] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.848926] ohci-pci: OHCI PCI platform driver [ 0.853411] ohci-platform: OHCI generic platform driver [ 0.858710] ohci-exynos: OHCI EXYNOS driver [ 0.863233] usbcore: registered new interface driver usb-storage [ 0.871141] tegra_rtc 7000e000.rtc: rtc core: registered 7000e000.rtc as rtc1 [ 0.878329] tegra_rtc 7000e000.rtc: Tegra internal Real Time Clock [ 0.884649] i2c /dev entries driver [ 0.890547] sdhci: Secure Digital Host Controller Interface driver [ 0.896734] sdhci: Copyright(c) Pierre Ossman [ 0.901239] Synopsys Designware Multimedia Card Interface Driver [ 0.907804] sdhci-pltfm: SDHCI platform and OF driver helper [ 0.921815] mmc0: Unknown controller version (3). You may experience problems. [ 0.972815] mmc0: SDHCI controller on 700b0600.sdhci [700b0600.sdhci] using ADMA 64-bit [ 0.984838] ledtrig-cpu: registered to indicate activity on CPUs [ 0.991899] usbcore: registered new interface driver usbhid [ 0.997496] usbhid: USB HID core driver [ 1.003215] NET: Registered protocol family 17 [ 1.008851] 9pnet: Installing 9P2000 support [ 1.015245] Key type dns_resolver registered [ 1.020101] registered taskstats version 1 [ 1.033126] hctosys: unable to open rtc device (rtc0) [ 1.038765] ALSA device list: [ 1.041775] No soundcards found. [ 1.045597] Waiting for root device PARTUUID=00000000-0001-0000-788f-a75600000000... [ 1.077857] mmc0: new high speed MMC card at address 0001 [ 1.083631] mmcblk0: mmc0:0001 SDW16G 14.7 GiB [ 1.088318] mmcblk0boot0: mmc0:0001 SDW16G partition 1 4.00 MiB [ 1.094381] mmcblk0boot1: mmc0:0001 SDW16G partition 2 4.00 MiB [ 1.100433] mmcblk0rpmb: mmc0:0001 SDW16G partition 3 4.00 MiB [ 1.108634] mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13 p14 p15 p16 p17 p18 [ 1.139272] EXT4-fs (mmcblk0p1): couldn't mount as ext3 due to feature incompatibilities [ 1.162991] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null) [ 1.171118] VFS: Mounted root (ext4 filesystem) on device 179:1. [ 1.182164] devtmpfs: mounted [ 1.185785] Freeing unused kernel memory: 1088K bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell root@(none):/#