mirror of https://gitee.com/openkylin/linux.git
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
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/*
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* linux/arch/arm/mach-footbridge/cats-hw.c
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*
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* CATS machine fixup
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*
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* Copyright (C) 1998, 1999 Russell King, Phil Blundell
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*/
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#include <linux/ioport.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/tty.h>
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#include <asm/hardware/dec21285.h>
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#include <asm/io.h>
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#include <asm/mach-types.h>
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#include <asm/setup.h>
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#include <asm/mach/arch.h>
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#include "common.h"
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#define CFG_PORT 0x370
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#define INDEX_PORT (CFG_PORT)
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#define DATA_PORT (CFG_PORT + 1)
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static int __init cats_hw_init(void)
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{
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if (machine_is_cats()) {
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/* Set Aladdin to CONFIGURE mode */
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outb(0x51, CFG_PORT);
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outb(0x23, CFG_PORT);
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/* Select logical device 3 */
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outb(0x07, INDEX_PORT);
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outb(0x03, DATA_PORT);
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/* Set parallel port to DMA channel 3, ECP+EPP1.9,
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enable EPP timeout */
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outb(0x74, INDEX_PORT);
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outb(0x03, DATA_PORT);
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outb(0xf0, INDEX_PORT);
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outb(0x0f, DATA_PORT);
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outb(0xf1, INDEX_PORT);
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outb(0x07, DATA_PORT);
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/* Select logical device 4 */
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outb(0x07, INDEX_PORT);
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outb(0x04, DATA_PORT);
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/* UART1 high speed mode */
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outb(0xf0, INDEX_PORT);
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outb(0x02, DATA_PORT);
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/* Select logical device 5 */
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outb(0x07, INDEX_PORT);
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outb(0x05, DATA_PORT);
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/* UART2 high speed mode */
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outb(0xf0, INDEX_PORT);
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outb(0x02, DATA_PORT);
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/* Set Aladdin to RUN mode */
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outb(0xbb, CFG_PORT);
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}
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return 0;
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}
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__initcall(cats_hw_init);
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/*
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* CATS uses soft-reboot by default, since
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* hard reboots fail on early boards.
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*/
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static void __init
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fixup_cats(struct machine_desc *desc, struct tag *tags,
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char **cmdline, struct meminfo *mi)
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{
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ORIG_VIDEO_LINES = 25;
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ORIG_VIDEO_POINTS = 16;
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ORIG_Y = 24;
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}
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MACHINE_START(CATS, "Chalice-CATS")
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MAINTAINER("Philip Blundell")
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BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
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BOOT_PARAMS(0x00000100)
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SOFT_REBOOT
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FIXUP(fixup_cats)
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MAPIO(footbridge_map_io)
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INITIRQ(footbridge_init_irq)
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.timer = &isa_timer,
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MACHINE_END
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