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config.c

/***************************************************************************/

/*
 *    linux/arch/m68knommu/platform/5206/config.c
 *
 *    Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
 *    Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com) 
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcftimer.h>
#include <asm/mcfsim.h>
#include <asm/mcfdma.h>

/***************************************************************************/

void coldfire_reset(void);

/***************************************************************************/

/*
 *    DMA channel base address table.
 */
unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
        MCF_MBAR + MCFDMA_BASE0,
        MCF_MBAR + MCFDMA_BASE1,
};

unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];

/***************************************************************************/

void mcf_autovector(unsigned int vec)
{
      volatile unsigned char  *mbar;
      unsigned char           icr;

      if ((vec >= 25) && (vec <= 31)) {
            vec -= 25;
            mbar = (volatile unsigned char *) MCF_MBAR;
            icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
            *(mbar + MCFSIM_ICR1 + vec) = icr;
            vec = 0x1 << (vec + 1);
            mcf_setimr(mcf_getimr() & ~vec);
      }
}

/***************************************************************************/

void mcf_settimericr(unsigned int timer, unsigned int level)
{
      volatile unsigned char *icrp;
      unsigned int icr, imr;

      if (timer <= 2) {
            switch (timer) {
            case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
            default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
            }

            icrp = (volatile unsigned char *) (MCF_MBAR + icr);
            *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
            mcf_setimr(mcf_getimr() & ~imr);
      }
}

/***************************************************************************/

int mcf_timerirqpending(int timer)
{
      unsigned int imr = 0;

      switch (timer) {
      case 1:  imr = MCFSIM_IMR_TIMER1; break;
      case 2:  imr = MCFSIM_IMR_TIMER2; break;
      default: break;
      }
      return (mcf_getipr() & imr);
}

/***************************************************************************/

void config_BSP(char *commandp, int size)
{
      mcf_setimr(MCFSIM_IMR_MASKALL);
      mach_reset = coldfire_reset;
}

/***************************************************************************/

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