MPC8560 boot console (CPM SCC) driver problem

MPC8560 boot console (CPM SCC) driver problem

[Gérard Guével]

Hi,

I download a 2.6.8 Linux kernel to port it to a custom 8560 board
similar to MPC8560_ADS board..

In the arch/ppc/boot directory there is no 85xx_io directory with
a CPM uart driver.

The kernel link waits for some serial basic functions like serial_getc().

I found the generic ./drivers/serial/cpm_uart driver, but it seems to only
be
used later when Linux is installed.

Surely I miss something.
How can I have a console for my boot ?
Are 8260 cpm2 definitions compatible with 85xx ?

Thanks
Gérard Guével


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Re: MPC8560 boot console (CPM SCC) driver problem

[Kumar Gala]

On Aug 24, 2004, at 11:22 AM, Gérard Guével wrote:

>
> Hi,
>
> I download a 2.6.8 Linux kernel to port it to a custom 8560 board
> similar to MPC8560_ADS board..
>
> In the arch/ppc/boot directory there is no 85xx_io directory with
> a CPM uart driver.
>
> The kernel link waits for some serial basic functions like
> serial_getc().
>
> I found the generic ./drivers/serial/cpm_uart driver, but it seems to
> only
> be
> used later when Linux is installed.
>
> Surely I miss something.
> How can I have a console for my boot ?
> Are 8260 cpm2 definitions compatible with 85xx ?

The common boot code in the kernel has not been ported to e500 or 85xx.
Thus the lack of proper serial support for the 8560.  I would recommend
using u-boot as the boot loader.  U-boot already has support for the
8560 and several boards.

- kumar


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