Re: Uncompress Ok, but cannot run linux kernel...

In message [off-list ref] you wrote:

quoted

The kernel is loaded with ppcboot and the tftpboot commando. To trace, I
used mpc8bug.

...

quoted

I set a breakpoint at the entry of the __start routine. After passing
the turn_on_mmu label, it returns with an rfi and hangs.

This is exactly what I meet now.
If you have good solutions, please let me know.

Use a debugger that understands the MMU, like the BDI2000 by Abatron.

In any case, make sure the DER does not trap into BDM mode on  normal
MMU work, i. e. set it to something like 0x2002000F.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"I didn't know it was impossible when I did it."

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In message [off-list ref] you wrote:

quoted

quoted

The kernel is loaded with ppcboot and the tftpboot commando. To trace,

I

quoted

quoted

used mpc8bug.

...

quoted

quoted

I set a breakpoint at the entry of the __start routine. After passing
the turn_on_mmu label, it returns with an rfi and hangs.

This is exactly what I meet now.
If you have good solutions, please let me know.

Use a debugger that understands the MMU, like the BDI2000 by Abatron.

In any case, make sure the DER does not trap into BDM mode on  normal
MMU work, i. e. set it to something like 0x2002000F.

My board use Powerpc 750. Does 750 has DER?

machael


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