MP8xx: not initialized CPM RAM crash

[Wolfgang Denk]

In message <3CD2255B.330FA4E4 at ardistech.com> you wrote:
>
> I found in ./drivers/i2c/i2c-rpx.c in rpx_iic_init the structure member
> ii->iic_rpbase != 0. Very likely because ppcboot uses this area as initial
> stack. This causes the kernel to get a machine check during i2c init. Should
> the CPM RAM not be zero'd somewhere during kernel boot?

Which kernel version are you talking about?

I think we fixed this in our version of the 8xx I2C driver long ago.

I don't  think  that  the  whole  CPM  RAM  should  be  zeroed;  it's
sufficient to correctly initialize the necessary fields.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
They weren't that important. They were merely at the top. The  people
who  really  run organizations are usually found several levels down,
where it's still possible to get things done.
                                      - Terry Pratchett, _Small Gods_

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/