Hi everybody, I am actually trying to launch L4Linux on Fiasco.OC+L4RE on Xilinx Zynq using QEMU but I get an error at the end of the boot of L4Linux : */bin/sh: can't access tty; job control turned off* */ #* Even if I have a shell prompt I can’t type anything, that’s why I am sending this email. I am aware that my problem is very similar to this one http://os.inf.tu-dresden.de/pipermail/l4-hackers/2013/005920.html but I tried every solution you suggested. I am working under *Ubuntu 64bits 14.04* and I am compiling with *arm-linux-gnueabi-gcc 4.7.3*. To emulate the *Xilinx Zynq*, I’m using *QEMU emulator version 2.0.50* configured this way : *./configure --target-list="arm-softmmu,microblazeel-softmmu" --enable-fdt --disable-kvm* To launch QEMU, here is my command line : *qemu-system-arm -M arm-generic-fdt -dtb ~/Documents/zynq-zc706.dtb -kernel ~/Documents/gitL4/l4-hypervisor/build/l4/images/bootstrap.elf -serial mon:stdio* Zynq is ARM so I’m using this ramdisk : http://os.inf.tu-dresden.de/download/ramdisk-arm.rd You can find below my serial output, my modules.list file and my l4lx.cfg file. Thanks in advance, Louis. Here is my serial output : *SPI device 0x7f7d798ea450* *L4 Bootstrapper* * Build: #2 Fri Jan 30 10:04:49 CET 2015, 4.7.3* * Scanning up to 512 MB RAM* * Memory size is 512MB (00100000 - 200fffff)* * RAM: 0000000000100000 - 00000000200fffff: 524288kB* * Total RAM: 512MB* * mod09: 0166f000-0196f000: ramdisk-arm.rd* * mod08: 01325000-0166e47c: vmlinuz.arm* * mod07: 01324000-013240bd: arm-rv.io <http://arm-rv.io>* * mod06: 0120e000-01323704: io* * mod05: 0120d000-0120d189: l4lx.cfg* * mod04: 011ba000-0120cbd4: ned* * mod03: 011a0000-011b9458: l4re* * mod02: 0116e000-0119f624: moe* * mod01: 01164000-0116d33c: sigma0* * mod00: 01115000-01163828: fiasco* * Moving up to 10 modules behind 1200000* * moving module 00 { 1115000-1163827 } -> { 1a5a000-1aa8827 } [321576]* * moving module 01 { 1164000-116d33b } -> { 1aa9000-1ab233b } [37692]* * moving module 02 { 116e000-119f623 } -> { 1ab3000-1ae4623 } [202276]* * moving module 03 { 11a0000-11b9457 } -> { 196f000-1988457 } [103512]* * moving module 04 { 11ba000-120cbd3 } -> { 1989000-19dbbd3 } [338900]* * moving module 05 { 120d000-120d188 } -> { 1200000-1200188 } [393]* * moving module 06 { 120e000-1323703 } -> { 1201000-1316703 } [1136388]* * moving module 07 { 1324000-13240bc } -> { 1317000-13170bc } [189]* * moving module 08 { 1325000-166e47b } -> { 1318000-166147b } [3445884]* * moving module 09 { 166f000-196efff } -> { 1662000-1961fff } [3145728]* * moving module 03 { 196f000-1988457 } -> { 1962000-197b457 } [103512]* * moving module 04 { 1989000-19dbbd3 } -> { 197c000-19cebd3 } [338900]* * Scanning fiasco -serial_esc* * Scanning sigma0* * Scanning moe rom/l4lx.cfg* * Relocated mbi to [0x110e000-0x110e15d]* * Loading fiasco* * Loading sigma0* * Loading moe* * find kernel info page...* * found kernel info page at 0x102000* *Regions of list 'regions'* * [ 101000, 101b3f] { b40} Kern fiasco* * [ 102000, 15efff] { 5d000} Kern fiasco* * [ 190000, 1965fb] { 65fc} Sigma0 sigma0* * [ 198000, 19e17b] { 617c} Sigma0 sigma0* * [ 240000, 26cafb] { 2cafc} Root moe* * [ 270000, 286f0f] { 16f10} Root moe* * [ 1100000, 11143f3] { 143f4} Boot bootstrap* * [ 110a000, 110a121] { 122} Boot mbi* * [ 110e000, 110e25a] { 25b} Root Multiboot info* * [ 1114048, 111409f] { 58} Boot mbi* * [ 1200000, 19cebd3] { 7cebd4} Root Module* *API Version: (87) experimental* * Sigma0 config ip:00190100 sp:01113de4* *Roottask config ip:00240260 sp:00000000* * Starting kernel fiasco at 001012fc* *Hello from Startup::stage2* *Number of IRQs available at this GIC: 96* *Cache config: ON* *ID_PFR[01]: 00001031 00000011 ID_[DA]FR0: 00000000 00000000* *ID_MMFR[04]: 00100103 20000000 01230000 00002111* *-----Gpt_ticks : 1638 -----* *L2: ID=00000000 Type=00000000 Aux=00000000 WMask=ff S=1* *L2: Type L2C-Unknown Size = 0kB* *SERIAL ESC: allocated IRQ 82 for serial uart* *Not using serial hack in slow timer handler.* *Welcome to Fiasco.OC (arm)!* *L4/Fiasco.OC arm microkernel (C) 1998-2013 TU Dresden * *Rev: 72df873 compiled with gcc 4.7.3 for zynq [] * *Build: #1 Fri Jan 30 09:52:25 CET 2015 * *Calibrating timer loop... done.* *MDB: use page size: 20* *MDB: use page size: 12* *SIGMA0: Hello!* * KIP @ 102000* * allocated 4KB for maintenance structures* *SIGMA0: Dump of all resource maps* *RAM:------------------------* *[0:100000;100fff]* *[0:15f000;18ffff]* *[0:197000;197fff]* *[0:19f000;23ffff]* *[4:240000;26cfff]* *[0:26d000;26ffff]* *[4:270000;286fff]* *[0:287000;110dfff]* *[4:110e000;110efff]* *[0:110f000;11fffff]* *[4:1200000;19cefff]* *[0:19cf000;1f0fffff]* *IOMEM:----------------------* *[0:0;fffff]* *[0:20100000;ffffffff]* *MOE: Hello world* *MOE: found 499200 KByte free memory* *MOE: found RAM from 100000 to 1f100000* *MOE: allocated 496 KByte for the page array @0x19f000* *MOE: virtual user address space [0-bfffffff]* *MOE: rom name space cap -> [C:501000]* * BOOTFS: [1962000-197b458] [C:503000] l4re* * BOOTFS: [197c000-19cebd4] [C:504000] ned* * BOOTFS: [1200000-1200189] [C:505000] l4lx.cfg* * BOOTFS: [1201000-1316704] [C:506000] io* * BOOTFS: [1317000-13170bd] [C:507000] arm-rv.io <http://arm-rv.io>* * BOOTFS: [1318000-166147c] [C:508000] vmlinuz.arm* * BOOTFS: [1662000-1962000] [C:509000] ramdisk-arm.rd* *MOE: cmdline: moe rom/l4lx.cfg* *MOE: Starting: rom/ned rom/l4lx.cfg* *MOE: loading 'rom/ned'* *Ned says: Hi World!* *Ned: loading file: 'rom/l4lx.cfg'* *l4linux | libio: Warning: Query of 'vbus' failed!* *l4linux | PH 0 (t: 1) offs=00008000 vaddr=02000000 vend=023b4f8c* *l4linux | phys=02000000 ephys=023b4f8c* *l4linux | f_sz=003303b6 memsz=003b4f8c flgs=rwx* *l4linux | PH 1 (t: 4) offs=002f401c vaddr=022ec01c vend=022ec040* *l4linux | phys=022ec01c ephys=022ec040* *l4linux | f_sz=00000024 memsz=00000024 flgs=r-x* *l4linux | PH 2 (t: 1685382481) offs=00000000 vaddr=00000000 vend=00000000* *l4linux | phys=00000000 ephys=00000000* *l4linux | f_sz=00000000 memsz=00000000 flgs=rwx* *l4linux | Starting binary at 0x20002a0, argc=7 argv=0x80007f8c *argv=0xb1007ff0 argv0=rom/vmlinuz.arm* *l4linux | External resolver is at 0xa8000788* *l4linux | ======> L4Linux starting... <========* *l4linux | Linux version 3.13.0-l4 (novasys@vmxub) (gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1) ) #1 Fri Jan 30 10:04:39 CET 2015 * *l4linux | Binary name: rom/vmlinuz.arm* *l4linux | This is an AEABI build.* *l4linux | Linux kernel command line (6 args): mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd root=1:0 ramdisk_size=4000 init=/bin/sh * *l4linux | CPU mapping (l:p)[1]: 0:0* *l4linux | Image: 02000000 - 02400000 [4096 KiB].* *l4linux | Areas: Text: 02000000 - 0230a000 [3112kB] (a bit longer)* *l4linux | Data: 0230a000 - 0232b7c0 [133kB]* *l4linux | Initdata: 022ed000 - 02309d5c [115kB]* *l4linux | BSS: 023303b6 - 023b4f8c [530kB]* *l4linux | Device scan:* *l4linux | Device scan done.* *l4linux | l4lx_thread_create: Created thread 413 (cpu0) (u:b3000e00, v:b3000c00, sp:0230bfa4)* *l4linux | main thread will be 413* *l4linux | l4x_register_pointer_section: addr = 02000000 size = 3887104* *l4linux | section-with-init: Virt: 0x2000000 to 0x23b4f8b [3795 KiB]* *l4linux | section-with-init: Phys: 0x0038d000 to 0x00741f8b, [3795 KiB]* *l4linux | Main thread running, waiting...* *l4linux | L4x: Memory size: 64MB* *l4linux | L4x: Setting superpages for main memory* *l4linux | L4x: Adjusted memory start: 02000000* *l4linux | Main memory: Virt: 0x2400000 to 0x63fffff [65536 KiB]* *l4linux | Main memory: Phys: 0x01a00000 to 0x059fffff, [65536 KiB]* *l4linux | l4x: vmalloc area: 06400000 - 0e400000* *l4linux | l4x_register_pointer_section: addr = 02000000 size = 3887104* *l4linux | text: Virt: 0x2000000 to 0x23b4f8b [3795 KiB]* *l4linux | text: Phys: 0x0038d000 to 0x00741f8b, [3795 KiB]* *l4linux | l4x_rd_path: rom/ramdisk-arm.rd* *l4linux | Loading: rom/ramdisk-arm.rd* *l4linux | INITRD: Size of RAMdisk is 3072KiB* *l4linux | RAMdisk from 00002000 to 00302000 [3072KiB]* *l4linux | l4lx_thread_create: Created thread 418 (timer) (u:b3000a00, v:00000000, sp:0234dfa0)* *Booting Linux on physical CPU 0x0* *Linux version 3.13.0-l4 (novasys@vmxub) (gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1) ) #1 Fri Jan 30 10:04:39 CET 2015* *CPU: Fiasco [410fc090] revision 0 (ARMv7), cr=00000000* *CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache* *Machine: L4* *Memory policy: Data cache writeback* *INITRD: 00002000 - 00302000* *Built 1 zonelists in Zone order, mobility grouping on. Total pages: 17209* *Kernel command line: mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd root=1:0 ramdisk_size=4000 init=/bin/sh* *PID hash table entries: 512 (order: -1, 2048 bytes)* *Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)* *Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)* *Memory: 64804K/69636K available (2328K kernel code, 133K rwdata, 664K rodata, 115K init, 530K bss, 4832K reserved)* *Virtual kernel memory layout:* * vector : 0xbffff000 - 0xc0000000 ( 4 kB)* * fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)* * vmalloc : 0x06400000 - 0x0e400000 ( 128 MB)* * lowmem : 0x00000000 - 0x06400000 ( 100 MB)* * modules : Virtual kernel memory layout:* * vector : 0xbffff000 - 0xc0000000 ( 4 kB)* * fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)* * vmalloc : 0x06400000 - 0x0e400000 ( 128 MB)* * lowmem : 0x00000000 - 0x06400000 ( 100 MB)* * moNR_IRQS:220* *l4timer: Using IRQ210* *sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483648000ns* *Console: colour dummy device 80x30* *console [ttyLv0] enabled* *Calibrating delay loop... 2636.18 BogoMIPS (lpj=13180928)* *pid_max: default: 32768 minimum: 301* *Mount-cache hash table entries: 512* *CPU: Testing write buffer coherency: ok* *Setting up static identity map for 0x222f940 - 0x222f940* *NET: Registered protocol family 16* *DMA: preallocated 256 KiB pool for atomic coherent allocations* *bio: create slab <bio-0> at 0* *Failed to create "l4x" debugfs directory: 1* *Switched to clocksource l4kipclk* *NET: Registered protocol family 2* *TCP established hash table entries: 1024 (order: 0, 4096 bytes)* *TCP bind hash table entries: 1024 (order: 0, 4096 bytes)* *TCP: Hash tables configured (established 1024 bind 1024)* *TCP: reno registered* *UDP hash table entries: 256 (order: 0, 4096 bytes)* *UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)* *NET: Registered protocol family 1* *Trying to unpack rootfs image as initramfs...* *rootfs image is not initramfs (junk in compressed archive); looks like an initrd* *INITRD: Freeing memory.* *l4x: Checks passed.* *NetWinder Floating Point Emulator V0.97 (double precision)* *msgmni has been set to 126* *io scheduler noop registered* *io scheduler deadline registered* *io scheduler cfq registered (default)* *L4 serial driver* *ttyLv0 at MMIO 0x1 (irq = 211, base_baud = 230400) is a L4* *l4ser_shm: L4 shared mem serial driver* *l4cdds: No name given, not starting.* *brd: module loaded* *l4bdds: No name given, not starting.* *mousedev: PS/2 mouse device common for all mice* *TCP: cubic registered* *NET: Registered protocol family 17* *RAMDISK: ext2 filesystem found at block 0* *RAMDISK: Loading 3072KiB [1 disk] into ram disk... done.* *EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities* *EXT4-fs (ram0): mounting ext2 file system using the ext4 subsystem* *EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)* *VFS: Mounted root (ext2 filesystem) readonly on device 1:0.* *Freeing unused kernel memory: 112K (022ed000 - 02309000)* */bin/sh: can't access tty; job control turned off* */ #* Here is my modules.list : *modaddr 0x01100000* *default-kernel fiasco -serial_esc* *default-bootstrap bootstrap* *entry L4Linux ARM* *roottask moe rom/l4lx.cfg* *module l4re* *module ned* *module l4lx.cfg* *module io* *module arm-rv.io <http://arm-rv.io>* *module vmlinuz.arm* *module ramdisk-arm.rd* Here is my l4lx.cfg : *-- vim:set ft=lua:* *local lxname = "vmlinuz";* *if L4.Info.arch() == "arm" then* * lxname = "vmlinuz.arm";* *end* *L4.default_loader:start(* * { caps = {* * log = L4.Env.log:m("rws"),* * },* * l4re_dbg = L4.Dbg.Warn,* * log = { "l4linux", "yellow" },* * },* * "rom/" .. lxname .. " mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-" .. L4.Info.arch() .. ".rd root=1:0 ramdisk_size=4000 init=/bin/sh");* But I also tried this one : *-- vim:set ft=lua:* *local lxname = "vmlinuz";* *if L4.Info.arch() == "arm" then* * lxname = "vmlinuz.arm";* *end* *L4.default_loader:start(* * { caps = {* * },* * l4re_dbg = L4.Dbg.Warn,* * log = L4.Env.log,* * },* * "rom/" .. lxname .. " mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-" .. L4.Info.arch() .. ".rd root=1:0 ramdisk_size=4000 init=/bin/sh");*