arch/m68k/platform/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/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 #include <linux/rtc.h>
  24
  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-vz.h"
  32 #endif
  33
  34 /***************************************************************************/
  35
  36 int m68328_hwclk(int set, struct rtc_time *t);
  37
  38 /***************************************************************************/
  39 /*                        Init Drangon Engine hardware                     */
  40 /***************************************************************************/
  41 #if defined(CONFIG_DRAGEN2)
  42
  43 static 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
  62 static 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_INIT_LCD
  94         /* initialize LCD controller */
  95         LSSA = (long) screen_bits;
  96         LVPW = 0x14;
  97         LXMAX = 0x140;
  98         LYMAX = 0xef;
  99         LRRA = 0;
 100         LPXCD = 3;
 101         LPICF = 0x08;
 102         LPOLCF = 0;
 103         LCKCON = 0x80;
 104         PCPDEN = 0xff;
 105         PCSEL = 0;
 106
 107         /* Enable LCD controller */
 108         PKDIR |= 0x4;
 109         PKSEL |= 0x4;
 110         PKDATA &= ~0x4;
 111
 112         /* Enable CCFL backlighting circuit */
 113         PBDIR |= 0x20;
 114         PBSEL |= 0x20;
 115         PBDATA &= ~0x20;
 116
 117         /* contrast control register */
 118         PFDIR |= 0x1;
 119         PFSEL &= ~0x1;
 120         PWMR = 0x037F;
 121 #endif
 122 }
 123
 124 /***************************************************************************/
 125 /*                      Init RT-Control uCdimm hardware                    */
 126 /***************************************************************************/
 127 #elif defined(CONFIG_UCDIMM)
 128
 129 static void m68vz328_reset(void)
 130 {
 131         local_irq_disable();
 132         asm volatile (
 133                 "moveal #0x10c00000, %a0;\n\t"
 134                 "moveb #0, 0xFFFFF300;\n\t"
 135                 "moveal 0(%a0), %sp;\n\t"
 136                 "moveal 4(%a0), %a0;\n\t"
 137                 "jmp (%a0);\n"
 138         );
 139 }
 140
 141 unsigned char *cs8900a_hwaddr;
 142 static int errno;
 143
 144 _bsc0(char *, getserialnum)
 145 _bsc1(unsigned char *, gethwaddr, int, a)
 146 _bsc1(char *, getbenv, char *, a)
 147
 148 static void init_hardware(char *command, int size)
 149 {
 150         char *p;
 151
 152         printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
 153         p = cs8900a_hwaddr = gethwaddr(0);
 154         printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
 155                 p[0], p[1], p[2], p[3], p[4], p[5]);
 156         p = getbenv("APPEND");
 157         if (p)
 158                 strcpy(p, command);
 159         else
 160                 command[0] = 0;
 161 }
 162
 163 /***************************************************************************/
 164 #else
 165
 166 static void m68vz328_reset(void)
 167 {
 168 }
 169
 170 static void init_hardware(char *command, int size)
 171 {
 172 }
 173
 174 /***************************************************************************/
 175 #endif
 176 /***************************************************************************/
 177
 178 void config_BSP(char *command, int size)
 179 {
 180         printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
 181
 182         init_hardware(command, size);
 183
 184         mach_hwclk = m68328_hwclk;
 185         mach_reset = m68vz328_reset;
 186 }
 187
 188 /***************************************************************************/