Re: Running l4android on cubieboard2

Hi Adam,

​As you mentioned, I updated the source code and recompiled everything now
another issue apperad: "l4linux | Copro10/11 access (FPU), invalid, oops".
This failure is solved by disabling CONFIG_VFP, which is already discussed
here [1]. I could not forsee the future effect of disabling this attribute
in the kernel configuration. The current issue is related to the ramdisk.
In the COMPILATION 2 you can see the outputs. I wanted to use ramdisk, but
it couldn't work, do you have any idea


REF:
http://os.inf.tu-dresden.de/pipermail/l4-hackers/2014/006169.html
================================ COMPILATION 2
================================
4timer: Using IRQ210
sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every
2147483648000ns
Console: colour dummy device 80x30
console [ttyLv0] enabled
Calibrating delay loop... 1908.73 BogoMIPS (lpj=9543680)
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 0x223f0a8 - 0x223f0a8
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
Added static device 'L4ICU' with 0 resources.
Added static device 'NIC' with 2 resources.
Failed to create "l4x" debugfs directory: 1
Switched to clocksource l4kipclk
NET: Registered protocol family 2
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
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 506
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 (02301000 - 0231d000)
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b


================================ COMPILATION 1
================================

Booting Linux on physical CPU 0x0
Linux version 3.16.0-l4-g5d0896b (akpolat@akpolatX240) (gcc version 4.7.3
(Ubuntu/Linaro 4.7.3-12ubuntu1) ) #3 Wed Jan 14 12:22:32 CET 2015
CPU: Fiasco [410fc074] revision 4 (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: 65977
Kernel command line: mem=256M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd
root=1:0 ramdisk_size=10000
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 259580K/266244K available (2415K kernel code, 137K rwdata, 684K
rodata, 116K init, 535K bss, 6664K reserved)
....
sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every
2147483648000ns
Console: colour dummy device 80x30
console [ttyLv0] enabled
Calibrating delay loop... 1908.73 BogoMIPS (lpj=9543680)
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 0x22449c8 - 0x22449c8
l4linux | Copro10/11 access (FPU), invalid, will oops
Internal error: Oops - undefined instruction: 0 [#1] ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 3.16.0-l4-g5d0896b #3
task: 11c19ac0 ti: 11c26000 task.ti: 11c26000
PC is at l4x_fmrx+0x60/0xa4
LR is at vfp_init+0x38/0x180
pc : [<020028fc>]    lr : [<0230da10>]    psr: 80000013
sp : 11c27ed8  ip : 00000000  fp : 00000000
r10: 11c26000  r9 : 00000000  r8 : 0230d9d8
r7 : 0234e000  r6 : 11c4fc00  r5 : 02332410  r4 : 02330b48
r3 : 0230db58  r2 : 00000004  r1 : 00000000  r0 : 00000000
vcpu: b3000c00  vcpu-state: 00000000
Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Process swapper (pid: 1, stack limit = 0x11c26238)
Stack: (0x11c27ed8 to 0x11c28000)

...
---[ end trace 49f8e7384a258bd9 ]---
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

---[ end Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b

panic: going to sleep forever, bye
l4linux | panic: going to sleep forever, bye


===============================
Sincerely,
Cem

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