About IDE_DIRECT on PCMCIA port in ppcboot and linux

Hello all:
	We have get the schematic from Steven.
I have some question about the driver in ppcboot and
linux.

1.Why in ppcboot/include/pcmcia.h , all memory windows
have defined same in all boards.These values can be
changed ( if fit with address encode)?
If we just use PCMCIA as IDE , pcmcia_init() will not
been called()?

2.IDE just need a hw_regs_t(via PCMCIA's port) to
access IDE's register and a IRQ , these are enough?

3.If we use normal harddisk(as same in PC), Can this
driver do them?


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Hi.

I'm trying to keep a small trace buffer over re-boots
of linux from ppcboot, so give a mem=31M flag to linux
kernel.  Yet by the time linux is up, it has overwritten
that memory anyway..   PPCBOOT is properly leaving it
be (with PRAM feature) and correct arg. goes to kernel..

After 'reboot' from linux, the memory contents of
the last meg are still valid (in ppcboot) but by the time linux
is back up, the region has been trashed.  Why?

Help, please.  How to prevent linux from talking to
that memory region during bootup?

--
David Updegraff / dave@cray.com


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