87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
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/*
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* linux/arch/sh/boards/cat68701/setup.c
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*
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* Copyright (C) 2000 Niibe Yutaka
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* 2001 Yutaro Ebihara
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*
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* Setup routines for A-ONE Corp CAT-68701 SH7708 Board
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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*/
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#include <asm/io.h>
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#include <asm/machvec.h>
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#include <asm/mach/io.h>
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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const char *get_system_type(void)
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{
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return "CAT-68701";
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}
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#ifdef CONFIG_HEARTBEAT
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void heartbeat_cat68701()
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{
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static unsigned int cnt = 0, period = 0 , bit = 0;
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cnt += 1;
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if (cnt < period) {
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return;
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}
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cnt = 0;
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/* Go through the points (roughly!):
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* f(0)=10, f(1)=16, f(2)=20, f(5)=35,f(inf)->110
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*/
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period = 110 - ( (300<<FSHIFT)/
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((avenrun[0]/5) + (3<<FSHIFT)) );
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if(bit){ bit=0; }else{ bit=1; }
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outw(bit<<15,0x3fe);
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}
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#endif /* CONFIG_HEARTBEAT */
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unsigned long cat68701_isa_port2addr(unsigned long offset)
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{
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/* CompactFlash (IDE) */
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if (((offset >= 0x1f0) && (offset <= 0x1f7)) || (offset==0x3f6))
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return 0xba000000 + offset;
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/* INPUT PORT */
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if ((offset >= 0x3fc) && (offset <= 0x3fd))
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return 0xb4007000 + offset;
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/* OUTPUT PORT */
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if ((offset >= 0x3fe) && (offset <= 0x3ff))
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return 0xb4007400 + offset;
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return offset + 0xb4000000; /* other I/O (EREA 5)*/
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}
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/*
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* The Machine Vector
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*/
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struct sh_machine_vector mv_cat68701 __initmv = {
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.mv_nr_irqs = 32,
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.mv_isa_port2addr = cat68701_isa_port2addr,
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.mv_irq_demux = cat68701_irq_demux,
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.mv_init_irq = init_cat68701_IRQ,
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#ifdef CONFIG_HEARTBEAT
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.mv_heartbeat = heartbeat_cat68701,
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#endif
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};
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ALIAS_MV(cat68701)
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int __init platform_setup(void)
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{
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/* dummy read erea5 (CS8900A) */
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}
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