[U-Boot-Users] MPC83xx: CF in True IDE mode

[Joao, Nuno (ext)]

	We're using a CF card in TrueIDE mode, on a board with u-boot
	and MPC8541E.

	A CPLD maps the CF bus (only the signals needed for IDE mode)
	into MPC's memory map; this makes the "IDE physical" interface.
	UPM machines are used for the accesses timing. 2 chipselects
	are also used, one for the "normal" register file and another
	for the "alternative register file".

	u-boot's "ide" command is used; it was only changed in the
	register access routines, because of different address
	calculation and endianess.

	You have to be careful when interfacing the CF card (or any
	IDE device) with the MPCs. Keep in mind that register 0 (the
	data register) is accessed at address 0 and is 16 bit wide;
	the remaining registers are accessed in the next consecutive
	addresses (1, 2, ...), but are 8 bit wide.

	Best Regards


-----Original Message-----
From: u-boot-users-admin at lists.sourceforge.net
[mailto:u-boot-users-admin at lists.sourceforge.net] On Behalf Of Yogi
Sent: quinta-feira, 20 de Abril de 2006 23:36
Subject: [U-Boot-Users] MPC83xx: CF in True IDE mode

> Is there support for CF access in true IDE mode for
> 83xx with Reiser File system ?