cats-hw.c
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/*
* linux/arch/arm/mach-footbridge/cats-hw.c
*
* CATS machine fixup
*
* Copyright (C) 1998, 1999 Russell King, Phil Blundell
*/
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/screen_info.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <asm/hardware/dec21285.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/mach/arch.h>
#include "common.h"
#define CFG_PORT 0x370
#define INDEX_PORT (CFG_PORT)
#define DATA_PORT (CFG_PORT + 1)
static int __init cats_hw_init(void)
{
if (machine_is_cats()) {
/* Set Aladdin to CONFIGURE mode */
outb(0x51, CFG_PORT);
outb(0x23, CFG_PORT);
/* Select logical device 3 */
outb(0x07, INDEX_PORT);
outb(0x03, DATA_PORT);
/* Set parallel port to DMA channel 3, ECP+EPP1.9,
enable EPP timeout */
outb(0x74, INDEX_PORT);
outb(0x03, DATA_PORT);
outb(0xf0, INDEX_PORT);
outb(0x0f, DATA_PORT);
outb(0xf1, INDEX_PORT);
outb(0x07, DATA_PORT);
/* Select logical device 4 */
outb(0x07, INDEX_PORT);
outb(0x04, DATA_PORT);
/* UART1 high speed mode */
outb(0xf0, INDEX_PORT);
outb(0x02, DATA_PORT);
/* Select logical device 5 */
outb(0x07, INDEX_PORT);
outb(0x05, DATA_PORT);
/* UART2 high speed mode */
outb(0xf0, INDEX_PORT);
outb(0x02, DATA_PORT);
/* Set Aladdin to RUN mode */
outb(0xbb, CFG_PORT);
}
return 0;
}
__initcall(cats_hw_init);
/*
* CATS uses soft-reboot by default, since
* hard reboots fail on early boards.
*/
static void __init
fixup_cats(struct tag *tags, char **cmdline, struct meminfo *mi)
{
screen_info.orig_video_lines = 25;
screen_info.orig_video_points = 16;
screen_info.orig_y = 24;
}
MACHINE_START(CATS, "Chalice-CATS")
/* Maintainer: Philip Blundell */
.atag_offset = 0x100,
.reboot_mode = REBOOT_SOFT,
.fixup = fixup_cats,
.map_io = footbridge_map_io,
.init_irq = footbridge_init_irq,
.init_time = isa_timer_init,
.restart = footbridge_restart,
MACHINE_END