LXR linux/arch/m68k/68000/m68VZ328.c

   1/***************************************************************************/
   2
   3/*
   4 *  m68VZ328.c - 68VZ328 specific config
   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/init.h>
  18#include <linux/types.h>
  19#include <linux/kernel.h>
  20#include <linux/kd.h>
  21#include <linux/netdevice.h>
  22#include <linux/interrupt.h>
  23#include <linux/irq.h>
  24#include <linux/rtc.h>
  25#include <linux/pgtable.h>
  26
  27#include <asm/machdep.h>
  28#include <asm/MC68VZ328.h>
  29#include <asm/bootstd.h>
  30
  31#ifdef CONFIG_INIT_LCD
  32#include "bootlogo-vz.h"
  33#endif
  34
  35/***************************************************************************/
  36
  37int m68328_hwclk(int set, struct rtc_time *t);
  38
  39/***************************************************************************/
  40/*                        Init Drangon Engine hardware                     */
  41/***************************************************************************/
  42#if defined(CONFIG_DRAGEN2)
  43
  44static void m68vz328_reset(void)
  45{
  46        local_irq_disable();
  47
  48#ifdef CONFIG_INIT_LCD
  49        PBDATA |= 0x20;                         /* disable CCFL light */
  50        PKDATA |= 0x4;                          /* disable LCD controller */
  51        LCKCON = 0;
  52#endif
  53
  54        __asm__ __volatile__(
  55                "reset\n\t"
  56                "moveal #0x04000000, %a0\n\t"
  57                "moveal 0(%a0), %sp\n\t"
  58                "moveal 4(%a0), %a0\n\t"
  59                "jmp (%a0)"
  60        );
  61}
  62
  63static void __init init_hardware(char *command, int size)
  64{
  65#ifdef CONFIG_DIRECT_IO_ACCESS
  66        SCR = 0x10;                                     /* allow user access to internal registers */
  67#endif
  68
  69        /* CSGB Init */
  70        CSGBB = 0x4000;
  71        CSB = 0x1a1;
  72
  73        /* CS8900 init */
  74        /* PK3: hardware sleep function pin, active low */
  75        PKSEL |= PK(3);                         /* select pin as I/O */
  76        PKDIR |= PK(3);                         /* select pin as output */
  77        PKDATA |= PK(3);                        /* set pin high */
  78
  79        /* PF5: hardware reset function pin, active high */
  80        PFSEL |= PF(5);                         /* select pin as I/O */
  81        PFDIR |= PF(5);                         /* select pin as output */
  82        PFDATA &= ~PF(5);                       /* set pin low */
  83
  84        /* cs8900 hardware reset */
  85        PFDATA |= PF(5);
  86        { int i; for (i = 0; i < 32000; ++i); }
  87        PFDATA &= ~PF(5);
  88
  89        /* INT1 enable (cs8900 IRQ) */
  90        PDPOL &= ~PD(1);                        /* active high signal */
  91        PDIQEG &= ~PD(1);
  92        PDIRQEN |= PD(1);                       /* IRQ enabled */
  93
  94#ifdef CONFIG_INIT_LCD
  95        /* initialize LCD controller */
  96        LSSA = (long) screen_bits;
  97        LVPW = 0x14;
  98        LXMAX = 0x140;
  99        LYMAX = 0xef;
 100        LRRA = 0;
 101        LPXCD = 3;
 102        LPICF = 0x08;
 103        LPOLCF = 0;
 104        LCKCON = 0x80;
 105        PCPDEN = 0xff;
 106        PCSEL = 0;
 107
 108        /* Enable LCD controller */
 109        PKDIR |= 0x4;
 110        PKSEL |= 0x4;
 111        PKDATA &= ~0x4;
 112
 113        /* Enable CCFL backlighting circuit */
 114        PBDIR |= 0x20;
 115        PBSEL |= 0x20;
 116        PBDATA &= ~0x20;
 117
 118        /* contrast control register */
 119        PFDIR |= 0x1;
 120        PFSEL &= ~0x1;
 121        PWMR = 0x037F;
 122#endif
 123}
 124
 125/***************************************************************************/
 126/*                      Init RT-Control uCdimm hardware                    */
 127/***************************************************************************/
 128#elif defined(CONFIG_UCDIMM)
 129
 130static void m68vz328_reset(void)
 131{
 132        local_irq_disable();
 133        asm volatile (
 134                "moveal #0x10c00000, %a0;\n\t"
 135                "moveb #0, 0xFFFFF300;\n\t"
 136                "moveal 0(%a0), %sp;\n\t"
 137                "moveal 4(%a0), %a0;\n\t"
 138                "jmp (%a0);\n"
 139        );
 140}
 141
 142unsigned char *cs8900a_hwaddr;
 143static int errno;
 144
 145_bsc0(char *, getserialnum)
 146_bsc1(unsigned char *, gethwaddr, int, a)
 147_bsc1(char *, getbenv, char *, a)
 148
 149static void __init init_hardware(char *command, int size)
 150{
 151        char *p;
 152
 153        pr_info("uCdimm serial string [%s]\n", getserialnum());
 154        p = cs8900a_hwaddr = gethwaddr(0);
 155        pr_info("uCdimm hwaddr %pM\n", p);
 156        p = getbenv("APPEND");
 157        if (p)
 158                strcpy(p, command);
 159        else
 160                command[0] = 0;
 161}
 162
 163/***************************************************************************/
 164#else
 165
 166static void m68vz328_reset(void)
 167{
 168}
 169
 170static void __init init_hardware(char *command, int size)
 171{
 172}
 173
 174/***************************************************************************/
 175#endif
 176/***************************************************************************/
 177
 178void __init config_BSP(char *command, int size)
 179{
 180        pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
 181
 182        init_hardware(command, size);
 183
 184        mach_sched_init = hw_timer_init;
 185        mach_hwclk = m68328_hwclk;
 186        mach_reset = m68vz328_reset;
 187}
 188
 189/***************************************************************************/
 190