MPC8560 boot console (CPM SCC) driver problem

Kumar Gala kumar.gala at
Wed Aug 25 04:02:39 EST 2004

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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