LXR linux/arch/m68knommu/platform/68VZ328/config.c

   1/***************************************************************************/
   2
   3/*
   4 *  linux/arch/m68knommu/platform/68VZ328/config.c
   5 *
   6 *  Copyright (C) 1993 Hamish Macdonald
   7 *  Copyright (C) 1999 D. Jeff Dionne
   8 *  Copyright (C) 2001 Georges Menie, Ken Desmet
   9 *
  10 * This file is subject to the terms and conditions of the GNU General Public
  11 * License.  See the file COPYING in the main directory of this archive
  12 * for more details.
  13 */
  14
  15/***************************************************************************/
  16
  17#include <linux/types.h>
  18#include <linux/kernel.h>
  19#include <linux/kd.h>
  20#include <linux/netdevice.h>
  21#include <linux/interrupt.h>
  22#include <linux/irq.h>
  23
  24#include <asm/system.h>
  25#include <asm/pgtable.h>
  26#include <asm/machdep.h>
  27#include <asm/MC68VZ328.h>
  28#include <asm/bootstd.h>
  29
  30#ifdef CONFIG_INIT_LCD
  31#include "bootlogo.h"
  32#endif
  33
  34/***************************************************************************/
  35
  36void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);
  37
  38/***************************************************************************/
  39/*                        Init Drangon Engine hardware                     */
  40/***************************************************************************/
  41#if defined(CONFIG_DRAGEN2)
  42
  43static void m68vz328_reset(void)
  44{
  45        local_irq_disable();
  46
  47#ifdef CONFIG_INIT_LCD
  48        PBDATA |= 0x20;                         /* disable CCFL light */
  49        PKDATA |= 0x4;                          /* disable LCD controller */
  50        LCKCON = 0;
  51#endif
  52
  53        __asm__ __volatile__(
  54                "reset\n\t"
  55                "moveal #0x04000000, %a0\n\t"
  56                "moveal 0(%a0), %sp\n\t"
  57                "moveal 4(%a0), %a0\n\t"
  58                "jmp (%a0)"
  59        );
  60}
  61
  62static void init_hardware(char *command, int size)
  63{
  64#ifdef CONFIG_DIRECT_IO_ACCESS
  65        SCR = 0x10;                                     /* allow user access to internal registers */
  66#endif
  67
  68        /* CSGB Init */
  69        CSGBB = 0x4000;
  70        CSB = 0x1a1;
  71
  72        /* CS8900 init */
  73        /* PK3: hardware sleep function pin, active low */
  74        PKSEL |= PK(3);                         /* select pin as I/O */
  75        PKDIR |= PK(3);                         /* select pin as output */
  76        PKDATA |= PK(3);                        /* set pin high */
  77
  78        /* PF5: hardware reset function pin, active high */
  79        PFSEL |= PF(5);                         /* select pin as I/O */
  80        PFDIR |= PF(5);                         /* select pin as output */
  81        PFDATA &= ~PF(5);                       /* set pin low */
  82
  83        /* cs8900 hardware reset */
  84        PFDATA |= PF(5);
  85        { int i; for (i = 0; i < 32000; ++i); }
  86        PFDATA &= ~PF(5);
  87
  88        /* INT1 enable (cs8900 IRQ) */
  89        PDPOL &= ~PD(1);                        /* active high signal */
  90        PDIQEG &= ~PD(1);
  91        PDIRQEN |= PD(1);                       /* IRQ enabled */
  92
  93#ifdef CONFIG_68328_SERIAL_UART2
  94        /* Enable RXD TXD port bits to enable UART2 */
  95        PJSEL &= ~(PJ(5) | PJ(4));
  96#endif
  97
  98#ifdef CONFIG_INIT_LCD
  99        /* initialize LCD controller */
 100        LSSA = (long) screen_bits;
 101        LVPW = 0x14;
 102        LXMAX = 0x140;
 103        LYMAX = 0xef;
 104        LRRA = 0;
 105        LPXCD = 3;
 106        LPICF = 0x08;
 107        LPOLCF = 0;
 108        LCKCON = 0x80;
 109        PCPDEN = 0xff;
 110        PCSEL = 0;
 111
 112        /* Enable LCD controller */
 113        PKDIR |= 0x4;
 114        PKSEL |= 0x4;
 115        PKDATA &= ~0x4;
 116
 117        /* Enable CCFL backlighting circuit */
 118        PBDIR |= 0x20;
 119        PBSEL |= 0x20;
 120        PBDATA &= ~0x20;
 121
 122        /* contrast control register */
 123        PFDIR |= 0x1;
 124        PFSEL &= ~0x1;
 125        PWMR = 0x037F;
 126#endif
 127}
 128
 129/***************************************************************************/
 130/*                      Init RT-Control uCdimm hardware                    */
 131/***************************************************************************/
 132#elif defined(CONFIG_UCDIMM)
 133
 134static void m68vz328_reset(void)
 135{
 136        local_irq_disable();
 137        asm volatile (
 138                "moveal #0x10c00000, %a0;\n\t"
 139                "moveb #0, 0xFFFFF300;\n\t"
 140                "moveal 0(%a0), %sp;\n\t"
 141                "moveal 4(%a0), %a0;\n\t"
 142                "jmp (%a0);\n"
 143        );
 144}
 145
 146unsigned char *cs8900a_hwaddr;
 147static int errno;
 148
 149_bsc0(char *, getserialnum)
 150_bsc1(unsigned char *, gethwaddr, int, a)
 151_bsc1(char *, getbenv, char *, a)
 152
 153static void init_hardware(char *command, int size)
 154{
 155        char *p;
 156
 157        printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
 158        p = cs8900a_hwaddr = gethwaddr(0);
 159        printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
 160                p[0], p[1], p[2], p[3], p[4], p[5]);
 161        p = getbenv("APPEND");
 162        if (p)
 163                strcpy(p, command);
 164        else
 165                command[0] = 0;
 166}
 167
 168/***************************************************************************/
 169#else
 170
 171static void m68vz328_reset(void)
 172{
 173}
 174
 175static void init_hardware(char *command, int size)
 176{
 177}
 178
 179/***************************************************************************/
 180#endif
 181/***************************************************************************/
 182
 183void config_BSP(char *command, int size)
 184{
 185        printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
 186
 187        init_hardware(command, size);
 188
 189        mach_gettod = m68328_timer_gettod;
 190        mach_reset = m68vz328_reset;
 191}
 192
 193/***************************************************************************/
 194