linux/include/asm-arm/arch-ixp4xx/ixdp425.h
Deepak Saxena 54e269ead6 [ARM] 3226/1: IXP4xx runtime expansion bus window size configuration
Patch from Deepak Saxena

The expansion bus on the IXP46x NPU can be configured for either 32MiB or
16MiB windows and changing the configuration causes the base address for
each chip select for each region to change. Because of this, we cannot
hardcode the physical base as we currently do. This patch checks the
expansion bus configuration registers at runtime to determine the
appropriate window size. Note that this requires that the bootloader
already configured the device sizes appropriately, but I feel that is
valid assumption to make as the bootloader must configure and access
the flash window, the output display (LCD, LEDs, etc) window, and
other expansion bus devices.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-05 20:59:29 +00:00

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C

/*
* include/asm-arm/arch-ixp4xx/ixdp425.h
*
* IXDP425 platform specific definitions
*
* Author: Deepak Saxena <dsaxena@plexity.net>
*
* Copyright 2004 (c) MontaVista, Software, Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __ASM_ARCH_HARDWARE_H__
#error "Do not include this directly, instead #include <asm/hardware.h>"
#endif
#define IXDP425_SDA_PIN 7
#define IXDP425_SCL_PIN 6
/*
* IXDP425 PCI IRQs
*/
#define IXDP425_PCI_MAX_DEV 4
#define IXDP425_PCI_IRQ_LINES 4
/* PCI controller GPIO to IRQ pin mappings */
#define IXDP425_PCI_INTA_PIN 11
#define IXDP425_PCI_INTB_PIN 10
#define IXDP425_PCI_INTC_PIN 9
#define IXDP425_PCI_INTD_PIN 8