Trouble while running linux on custom PPC405GP board

Nov 02, 2004 4 Replies
A

Hello All ! I'm new in embedded linux and trying to run linux (2.4.22) on PowerPC (405GP). It boots nice, but when it tries to execute /sbin/init it hangs. Last console messages are: ....... VFS: Mounted root (nfs filesystem). Freeing unused kernel memory: 56k init 4k prep



I've tried to replace /sbin/init by my own executable - it's definitely have not been executed. I've traced it to the "last point" in kernel-mode (instruction "rfi" in file arch/ppc/kernel/entry.S:389). Everything OK before this point. But after this step kernel just hangs. After this sysrq-t prints that process init are running at c0007190 (this is in the arch_kernel_thread). sysrq-p doesn't print any registers, just the line "SysRq : Show Regs".



Could someone give me any tips how to handle this trouble?


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R

Is the NFS file system OK? Up to this point you have been running from the kernel image. But your init executable is probably on the NFS remote filesystem.

/RogerL

PS ELDK is a distribution for embedded systems (PowerPC, ARM, ...)

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DS

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A

Hi,

NFS Filesystem is OK. File "/sbin/init" successfully loads in memory (I've checked this by examining contents of the memory). Problem occurs a bit later

- when kernel tries to switch to user-mode.

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S

Are you trying to mount the root using nfs?

Shahar

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D

I ran into a similar problem once when I had a bad glibc. I had compiled the kernel for 386, but the glibc still had 686 instructions that hung on old uP architectures.

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