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config.c

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

/*
 *    linux/arch/m68knommu/platform/5272/config.c
 *
 *    Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
 *    Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
 */

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

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

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

void coldfire_reset(void);

extern unsigned int mcf_timervector;
extern unsigned int mcf_profilevector;
extern unsigned int mcf_timerlevel;

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

/*
 *    Some platforms need software versions of the GPIO data registers.
 */
unsigned short ppdata;
unsigned char ledbank = 0xff;

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

static struct mcf_platform_uart m5272_uart_platform[] = {
      {
            .mapbase    = MCF_MBAR + MCFUART_BASE1,
            .irq        = 73,
      },
      {
            .mapbase    = MCF_MBAR + MCFUART_BASE2,
            .irq        = 74,
      },
      { },
};

static struct platform_device m5272_uart = {
      .name             = "mcfuart",
      .id               = 0,
      .dev.platform_data      = m5272_uart_platform,
};

static struct platform_device *m5272_devices[] __initdata = {
      &m5272_uart,
};

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

static void __init m5272_uart_init_line(int line, int irq)
{
      u32 v;

      if ((line >= 0) && (line < 2)) {
            v = (line) ? 0x0e000000 : 0xe0000000;
            writel(v, MCF_MBAR + MCFSIM_ICR2);

            /* Enable the output lines for the serial ports */
            v = readl(MCF_MBAR + MCFSIM_PBCNT);
            v = (v & ~0x000000ff) | 0x00000055;
            writel(v, MCF_MBAR + MCFSIM_PBCNT);

            v = readl(MCF_MBAR + MCFSIM_PDCNT);
            v = (v & ~0x000003fc) | 0x000002a8;
            writel(v, MCF_MBAR + MCFSIM_PDCNT);
      }
}

static void __init m5272_uarts_init(void)
{
      const int nrlines = ARRAY_SIZE(m5272_uart_platform);
      int line;

      for (line = 0; (line < nrlines); line++)
            m5272_uart_init_line(line, m5272_uart_platform[line].irq);
}

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

void mcf_disableall(void)
{
      volatile unsigned long  *icrp;

      icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
      icrp[0] = 0x88888888;
      icrp[1] = 0x88888888;
      icrp[2] = 0x88888888;
      icrp[3] = 0x88888888;
}

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

void mcf_autovector(unsigned int vec)
{
      /* Everything is auto-vectored on the 5272 */
}

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

void mcf_settimericr(int timer, int level)
{
      volatile unsigned long *icrp;

      if ((timer >= 1 ) && (timer <= 4)) {
            icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
            *icrp = (0x8 | level) << ((4 - timer) * 4);
      }
}

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

void __init config_BSP(char *commandp, int size)
{
#if defined (CONFIG_MOD5272)
      volatile unsigned char  *pivrp;

      /* Set base of device vectors to be 64 */
      pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
      *pivrp = 0x40;
#endif

      mcf_disableall();

#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
      /* Copy command line from FLASH to local buffer... */
      memcpy(commandp, (char *) 0xf0004000, size);
      commandp[size-1] = 0;
#elif defined(CONFIG_CANCam)
      /* Copy command line from FLASH to local buffer... */
      memcpy(commandp, (char *) 0xf0010000, size);
      commandp[size-1] = 0;
#endif

      mcf_timervector = 69;
      mcf_profilevector = 70;
      mach_reset = coldfire_reset;
}

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

static int __init init_BSP(void)
{
      m5272_uarts_init();
      platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
      return 0;
}

arch_initcall(init_BSP);

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

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