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config.c

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

/*
 *  linux/arch/m68knommu/platform/68VZ328/config.c
 *
 *  Copyright (C) 1993 Hamish Macdonald
 *  Copyright (C) 1999 D. Jeff Dionne
 *  Copyright (C) 2001 Georges Menie, Ken Desmet
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

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

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/kd.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/irq.h>

#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
#include <asm/bootstd.h>

#ifdef CONFIG_INIT_LCD
#include "bootlogo.h"
#endif

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

void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);

/***************************************************************************/
/*                        Init Drangon Engine hardware                     */
/***************************************************************************/
#if defined(CONFIG_DRAGEN2)

static void m68vz328_reset(void)
{
      local_irq_disable();

#ifdef CONFIG_INIT_LCD
      PBDATA |= 0x20;                     /* disable CCFL light */
      PKDATA |= 0x4;                      /* disable LCD controller */
      LCKCON = 0;
#endif

      __asm__ __volatile__(
            "reset\n\t"
            "moveal #0x04000000, %a0\n\t"
            "moveal 0(%a0), %sp\n\t"
            "moveal 4(%a0), %a0\n\t"
            "jmp (%a0)"
      );
}

static void init_hardware(char *command, int size)
{
#ifdef CONFIG_DIRECT_IO_ACCESS
      SCR = 0x10;                         /* allow user access to internal registers */
#endif

      /* CSGB Init */
      CSGBB = 0x4000;
      CSB = 0x1a1;

      /* CS8900 init */
      /* PK3: hardware sleep function pin, active low */
      PKSEL |= PK(3);                     /* select pin as I/O */
      PKDIR |= PK(3);                     /* select pin as output */
      PKDATA |= PK(3);              /* set pin high */

      /* PF5: hardware reset function pin, active high */
      PFSEL |= PF(5);                     /* select pin as I/O */
      PFDIR |= PF(5);                     /* select pin as output */
      PFDATA &= ~PF(5);             /* set pin low */

      /* cs8900 hardware reset */
      PFDATA |= PF(5);
      { int i; for (i = 0; i < 32000; ++i); }
      PFDATA &= ~PF(5);

      /* INT1 enable (cs8900 IRQ) */
      PDPOL &= ~PD(1);              /* active high signal */
      PDIQEG &= ~PD(1);
      PDIRQEN |= PD(1);             /* IRQ enabled */

#ifdef CONFIG_68328_SERIAL_UART2
      /* Enable RXD TXD port bits to enable UART2 */
      PJSEL &= ~(PJ(5) | PJ(4));
#endif

#ifdef CONFIG_INIT_LCD
      /* initialize LCD controller */
      LSSA = (long) screen_bits;
      LVPW = 0x14;
      LXMAX = 0x140;
      LYMAX = 0xef;
      LRRA = 0;
      LPXCD = 3;
      LPICF = 0x08;
      LPOLCF = 0;
      LCKCON = 0x80;
      PCPDEN = 0xff;
      PCSEL = 0;

      /* Enable LCD controller */
      PKDIR |= 0x4;
      PKSEL |= 0x4;
      PKDATA &= ~0x4;

      /* Enable CCFL backlighting circuit */
      PBDIR |= 0x20;
      PBSEL |= 0x20;
      PBDATA &= ~0x20;

      /* contrast control register */
      PFDIR |= 0x1;
      PFSEL &= ~0x1;
      PWMR = 0x037F;
#endif
}

/***************************************************************************/
/*                      Init RT-Control uCdimm hardware                    */
/***************************************************************************/
#elif defined(CONFIG_UCDIMM)

static void m68vz328_reset(void)
{
      local_irq_disable();
      asm volatile (
            "moveal #0x10c00000, %a0;\n\t"
            "moveb #0, 0xFFFFF300;\n\t"
            "moveal 0(%a0), %sp;\n\t"
            "moveal 4(%a0), %a0;\n\t"
            "jmp (%a0);\n"
      );
}

unsigned char *cs8900a_hwaddr;
static int errno;

_bsc0(char *, getserialnum)
_bsc1(unsigned char *, gethwaddr, int, a)
_bsc1(char *, getbenv, char *, a)

static void init_hardware(char *command, int size)
{
      char *p;

      printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
      p = cs8900a_hwaddr = gethwaddr(0);
      printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
            p[0], p[1], p[2], p[3], p[4], p[5]);
      p = getbenv("APPEND");
      if (p)
            strcpy(p, command);
      else
            command[0] = 0;
}

/***************************************************************************/
#else

static void m68vz328_reset(void)
{
}

static void init_hardware(char *command, int size)
{
}

/***************************************************************************/
#endif
/***************************************************************************/

void config_BSP(char *command, int size)
{
      printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");

      init_hardware(command, size);

      mach_gettod = m68328_timer_gettod;
      mach_reset = m68vz328_reset;
}

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

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