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
  26 #include <asm/pgtable.h>
  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
  37 int m68328_hwclk(int set, struct rtc_time *t);
  38
  39 /***************************************************************************/
  40 /*                        Init Drangon Engine hardware                     */
  41 /***************************************************************************/
  42 #if defined(CONFIG_DRAGEN2)
  43
  44 static 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
  63 static 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
 130 static 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
 142 unsigned char *cs8900a_hwaddr;
 143 static int errno;
 144
 145 _bsc0(char *, getserialnum)
 146 _bsc1(unsigned char *, gethwaddr, int, a)
 147 _bsc1(char *, getbenv, char *, a)
 148
 149 static 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
 166 static void m68vz328_reset(void)
 167 {
 168 }
 169
 170 static void __init init_hardware(char *command, int size)
 171 {
 172 }
 173
 174 /***************************************************************************/
 175 #endif
 176 /***************************************************************************/
 177
 178 void __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 /***************************************************************************/