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    /*
     * (C) Copyright 2007 Michal Simek
     *
     * Michal  SIMEK <monstr@monstr.eu>
     *
     * See file CREDITS for list of people who contributed to this
     * project.
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License as
     * published by the Free Software Foundation; either version 2 of
     * the License, or (at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
     * MA 02111-1307 USA
     */
    
    #include <common.h>
    #include <asm/microblaze_timer.h>
    
    #include <asm/microblaze_intc.h>
    
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    volatile int timestamp = 0;
    
    void reset_timer (void)
    {
    	timestamp = 0;
    }
    
    
    #ifdef CONFIG_SYS_TIMER_0
    
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    ulong get_timer (ulong base)
    {
    	return (timestamp - base);
    }
    
    #else
    ulong get_timer (ulong base)
    {
    	return (timestamp++ - base);
    }
    #endif
    
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    void set_timer (ulong t)
    {
    	timestamp = t;
    }
    
    
    #ifdef CONFIG_SYS_INTC_0
    #ifdef CONFIG_SYS_TIMER_0
    microblaze_timer_t *tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR);
    
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    void timer_isr (void *arg)
    {
    	timestamp++;
    	tmr->control = tmr->control | TIMER_INTERRUPT;
    }
    
    void timer_init (void)
    {
    
    	tmr->loadreg = CONFIG_SYS_TIMER_0_PRELOAD;
    
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    	tmr->control = TIMER_INTERRUPT | TIMER_RESET;
    	tmr->control =
    	    TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT;
    	reset_timer ();
    
    	install_interrupt_handler (CONFIG_SYS_TIMER_0_IRQ, timer_isr, (void *)tmr);
    
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    }
    #endif
    #endif