kernel support of MPC8XX series
wd at denx.de
Mon Apr 2 19:26:25 EST 2001
in message <188.8.131.52.0.20010402165636.00b02008 at pop.ylez.com> you wrote:
> Thanks for your information. For the embedded system that I am going to
> develop, kernel 2.4 and PCMCIA is a must. Have you get them working on
> MPC8XX platform, especially MPC855? I have read the HOWTO, it just tell me
> MPC8XX is support without any specific information.
First, you can use the normal PCMCIA package, which has some support
for PCMCIA on the MPC8xx. Most probably you will have to make some
adjustments for your specific board, i. e. voltage switching etc.
For us, the majority of devices are memory cards like SanDisk,
CompactFlash or IDE harddisk adapters. On one side, the PCMCIA
package is a lot of overkill here; on the other side it cannot be
used when you want to boot from such a device. That's why we added
low-level direct IDE support to the kernel.
It's much more restricted than the full-blown PCMCIA package. For
instance, removing or replacing a card while the system is running or
similar events are not handled at all. But for the embedded
applications we've seen so far that never has been a requirement.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
On a clear disk you can seek forever.
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