Thank you for your help.
I enabled the CONFIG_DEVTMPFS and CONFIG_DEVTMPFS_MOUNT options as you suggested, as shown below in a piece from a .config file:
Then I get another error which I think is different from the mount of the filesystem.
But it is still difficult to say what might be wrong.
Could you please tell me what should I check to track down the source of the issue.
Thanks in advance.
...
...
L4 Bootstrapper
Build: #85 Fri May 29 15:43:55 CEST 2015, 4.8.3 20140320 (prerelease)
Scanning up to 256 MB RAM, starting at offset 32MB
Memory size is 256MB (10000000 - 1fffffff)
RAM: 0000000010000000 - 000000001fffffff: 262144kB
Total RAM: 256MB
Scanning fiasco
Scanning sigma0
Scanning moe
Moving up to 10 modules behind 11100000
moving module 02 { 118a9000-118e263f } -> { 11999000-119d263f } [235072]
moving module 01 { 1189f000-118a838b } -> { 1198f000-1199838b } [37772]
moving module 00 { 11848000-1189e0c7 } -> { 11938000-1198e0c7 } [352456]
moving module 09 { 11548000-11847fff } -> { 11638000-11937fff } [3145728]
moving module 08 { 111d6000-11547497 } -> { 112c6000-11637497 } [3609752]
moving module 07 { 111d5000-111d50bc } -> { 112c5000-112c50bc } [189]
moving module 06 { 1107e000-111d446f } -> { 1116e000-112c446f } [1401968]
moving module 05 { 1107d000-1107d17b } -> { 1116d000-1116d17b } [380]
moving module 04 { 1102a000-1107cc1f } -> { 1111a000-1116cc1f } [338976]
moving module 03 { 11010000-11029473 } -> { 11100000-11119473 } [103540]
Loading fiasco
Loading sigma0
Loading moe
find kernel info page...
found kernel info page at 0x10002000
Regions of list 'regions'
[ 10000000, 1000015f] { 160} Root mbi_rt
[ 10001000, 10001aff] { b00} Kern fiasco
[ 10002000, 10062fff] { 61000} Kern fiasco
[ 10090000, 10096edf] { 6ee0} Sigma0 sigma0
[ 10098000, 1009e177] { 6178} Sigma0 sigma0
[ 10140000, 10171d77] { 31d78} Root moe
[ 10178000, 101934ab] { 1b4ac} Root moe
[ 11000000, 1100f58f] { f590} Boot bootstrap
[ 11100000, 11937fff] { 838000} Root Module
API Version: (87) experimental
Sigma0 config ip:10090100 sp:00000000
Roottask config ip:10140260 sp:00000000
Starting kernel fiasco at 100012c8
Number of IRQs available at this GIC: 160
FPU0: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl
L2: ID=410000c7 Type=9e340340 Aux=02070000 WMask=ffff S=0
L2: Type L2C-310 Size = 1024kB Ways=16 Waysize=64
SERIAL ESC: allocated IRQ 58 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: rexported compiled with gcc 4.8.3 for i.MX6 []
Build: #19 Fri May 29 15:43:14 CEST 2015
Calibrating timer loop... done.
MDB: use page size: 20
MDB: use page size: 12
SIGMA0: Hello!
KIP @ 10002000
allocated 4KB for maintenance structures
SIGMA0: Dump of all resource maps
RAM:------------------------
[4:10000000;10000fff]
[0:10063000;1008ffff]
[0:10097000;10097fff]
[0:1009f000;1013ffff]
[4:10140000;10171fff]
[0:10172000;10177fff]
[4:10178000;10193fff]
[0:10194000;110fffff]
[4:11100000;11937fff]
[0:11938000;1effffff]
IOMEM:----------------------
[0:0;fffffff]
[0:20000000;ffffffff]
MOE: Hello world
MOE: found 236580 KByte free memory
MOE: found RAM from 10000000 to 1f000000
MOE: allocated 240 KByte for the page array @0x1009f000
MOE: virtual user address space [0-bfffffff]
MOE: rom name space cap -> [C:501000]
BOOTFS: [11100000-11119474] [C:503000] l4re
BOOTFS: [1111a000-1116cc20] [C:504000] ned
BOOTFS: [1116d000-1116d17c] [C:505000] l4lx.cfg
BOOTFS: [1116e000-112c4470] [C:506000] io
BOOTFS: [112c5000-112c50bd] [C:507000]
arm-rv.io BOOTFS: [112c6000-11637498] [C:508000] vmlinuz.arm
BOOTFS: [11638000-11938000] [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=023df0a8
l4linux | phys=02000000 ephys=023df0a8
l4linux | f_sz=00359394 memsz=003df0a8 flgs=rwx
l4linux | PH 1 (t: 4) offs=0031a170 vaddr=02312170 vend=02312194
l4linux | phys=02312170 ephys=02312194
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 0x20002a8, argc=6 argv=0xafff4f8c *argv=0xb1007ff0 argv0=rom/vmlinuz.arm
l4linux | External resolver is at 0xa8000738
l4linux | ======> L4Linux starting... <========
l4linux | Linux version 3.16.0-l4 (aichouch@aichouch-ThinkCentre-M90) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #4 Fri May 29 15:38:21 CEST 2015
l4linux | Binary name: rom/vmlinuz.arm
l4linux | This is an AEABI build.
l4linux | Linux kernel command line (5 args): mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd root=1:0 ramdisk_size=4000
l4linux | CPU mapping (l:p)[1]: 0:0
l4linux | Image: 02000000 - 02400000 [4096 KiB].
l4linux | Areas: Text: 02000000 - 02332000 [3272kB] (a bit longer)
l4linux | Data: 02332000 - 02354540 [137kB]
l4linux | Initdata: 02313000 - 02330614 [117kB]
l4linux | BSS: 02359394 - 023df0a8 [535kB]
l4linux | Device scan:
l4linux | Device scan done.
l4linux | l4lx_thread_create: Created thread 413 (cpu0) (u:b3000e00, v:b3000c00, sp:02333fa4)
l4linux | main thread will be 413
l4linux | l4x_register_pointer_section: addr = 02000000 size = 4063232
l4linux | section-with-init: Virt: 0x2000000 to 0x23df0a7 [3964 KiB]
l4linux | section-with-init: Phys: 0x10256000 to 0x106350a7, [3964 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: 0x11a00000 to 0x159fffff, [65536 KiB]
l4linux | l4x: vmalloc area: 06400000 - 0e400000
l4linux | l4x_register_pointer_section: addr = 02000000 size = 4063232
l4linux | text: Virt: 0x2000000 to 0x23df0a7 [3964 KiB]
l4linux | text: Phys: 0x10256000 to 0x106350a7, [3964 KiB]
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 (timer0) (u:b3000a00, v:00000000, sp:02377fa0)
Booting Linux on physical CPU 0x0
Linux version 3.16.0-l4 (aichouch@aichouch-ThinkCentre-M90) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #4 Fri May 29 15:38:21 CEST 2015
CPU: Fiasco [412fc09a] revision 10 (ARMv7), cr=00000000
CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: L4
Ignoring unrecognised tag 0x00000000
Memory policy: Data cache uncached
CPU: All CPU(s) started in SVC mode.
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
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: 64808K/69636K available (2452K kernel code, 137K rwdata, 692K rodata, 117K init, 535K bss, 4828K reserved)
Virtual kernel memory layout:
vector : 0xbffff000 - 0xc0000000 ( 4 kB)
fixmap : 0xffc00000 - 0xffe00000 (2048 kB)
vmalloc : 0x06400000 - 0x0e400000 ( 128 MB)
lowmem : 0x00000000 - 0x06400000 ( 100 MB)
modules : Virtual kernel memory layout:
vector : 0xbffff000 - 0xc0000000 ( 4 kB)
fixmap : 0xffc00000 - 0xffe00000 (2048 kB)
vmalloc : 0x06400000 - 0x0e400000 ( 128 MB)
lowmem : 0x00000000 - 0x06400000 ( 100 MB)
moNR_IRQS:220
l4timer: Using IRQ210
sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2147483648000ns
Console: colour dummy device 80x30
console [ttyLv0] enabled
Calibrating delay loop... 1574.50 BogoMIPS (lpj=7872512)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x224e410 - 0x224e410
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
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)
futex hash table entries: 256 (order: -1, 3072 bytes)
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.
devtmpfs: mounted
Freeing unused kernel memory: 116K (02313000 - 02330000)
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
CPU: 0 PID: 1 Comm: init Not tainted 3.16.0-l4 #4
[<0200cdd0>] (unwind_backtrace) from [<02005864>] (show_stack+0x10/0x14)
[<02005864>] (show_stack) from [<02248c90>] (panic+0x8c/0x1dc)
[<02248c90>] (panic) from [<0201df3c>] (complete_and_exit+0x0/0x1c)
[<0201df3c>] (complete_and_exit) from [<00000001>] (0x1)
---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
panic: going to sleep forever, bye
l4linux | panic: going to sleep forever, bye