Re: [microblaze-uclinux] Kernel hangs when mounting /proc

[Valentin Longchamp <valentin.longchamp@xxxxxxx>]

Hello,

I've tried to run the kernel with the single command line option, and
the kernel boots as normal, not doing the init as it is supposed to (so
not mounting proc and not freezing). But if I did that on a standart
Linux, i get a kernel prompt, and here not ?

Is there a problem with my BusyBox thing then ? What do you get when you
run the kernel with the single option ?

And if I wanted to change the rc file to remove somme initialization
command, how would I have to do that ? What file is taken from the
Makefile to generate these scripts for Microblaze uClinux ??

And a third question ? On my linux laptop, I have in my fstab the line
for proc that is none proc /proc, and in the rc file for uClinux, the
mount command is : mount -t proc proc /proc. Shouldn't that be mount -t
proc none /proc ?

Thx for the help

Valentin

Valentin Longchamp wrote:
> Hello,
> 
> I have resolved my problem with the VFS Kernel Panic, and the boot
> sequence goes further, but it hangs when mounting /proc.
> 
> So I have checked that the proc filesystem was in the kernel, this is
> ok, so it should be able to mount it !
> 
> But is there a mount command in my uClinux options ? I think there is
> one from the selected shell (BusyBox menu in uClinux-dist config) but
> there is also one from the filesystems Application that isn't selected
> (and makes me a compilation error if added) ? So is the boot script able
> to use the BusyBox one ? Why would it hang ?
> 
> The only things I have changed are in the Kernel, since I have no
> Ethernet port on my card, I have removed the Ethernet driver, and I have
> a MTD generic RAM/ROM support and that's all ...
> 
> Here is my kernel bootlog, if it helps (but this time, no interesting
> error message !) :
> 
> 
>>ROPES bootloader Menu
>>---------------------
>>
>>1.    Test the SDRAM
>>2.    Download Kernel from serial port
>>3.    Launch the Kernel from memory
>>4.    Set kernel cmdline
>>
>>
>>Make your choice>3
>>Linux version 2.4.29-uc0 (valentin@centrino) (gcc version 2.95.3-4 Xilinx EDK 6.
>>3 Build EDK_Gmm.12.2) #9 jeu jun 16 11:41:41 CEST 2005
>>On node 0 totalpages: 8192
>>zone(0): 8192 pages.
>>zone(1): 0 pages.
>>zone(2): 0 pages.
>>CPU: MICROBLAZE
>>Console: xmbserial on UARTLite
>>Kernel command line:
>>Calibrating delay loop... 33.07 BogoMIPS
>>Memory: 32MB = 32MB total
>>Memory: 30876KB available (595K code, 933K data, 32K init)
>>Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
>>Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
>>Mount cache hash table entries: 512 (order: 0, 4096 bytes)
>>Buffer cache hash table entries: 1024 (order: 0, 4096 bytes)
>>Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
>>POSIX conformance testing by UNIFIX
>>Linux NET4.0 for Linux 2.4
>>Based upon Swansea University Computer Society NET3.039
>>Microblaze UARTlite serial driver version 1.00
>>ttyS0 at 0xffff2000 (irq = 1) is a Microblaze UARTlite
>>Starting kswapd
>>xgpio #0 at 0xFFFF5000 mapped to 0xFFFF5000
>>Xilinx GPIO registered
>>RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
>>uclinux[mtd]: RAM probe address=0x800c58fc size=0xb9000
>>uclinux[mtd]: root filesystem index=0
>>VFS: Mounted root (romfs filesystem) readonly.
>>Freeing init memory: 32K
>>Mounting proc:
> 
> 
> Someone has got an idea ? It looks like the filesytem could be mounted
> and the init script is read the right way !
> 
> Thanks
> 
> Valentin
> 
> 
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