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/config.h>
  18 #include <linux/types.h>
  19 #include <linux/kernel.h>
  20 #include <linux/mm.h>
  21 #include <linux/tty.h>
  22 #include <linux/console.h>
  23 #include <linux/kd.h>
  24 #include <linux/netdevice.h>
  25
  26 #include <asm/setup.h>
  27 #include <asm/system.h>
  28 #include <asm/pgtable.h>
  29 #include <asm/irq.h>
  30 #include <asm/machdep.h>
  31 #include <asm/MC68VZ328.h>
  32 #include <asm/bootstd.h>
  33
  34 #ifdef CONFIG_INIT_LCD
  35 #include "bootlogo.h"
  36 #endif
  37
  38 /***************************************************************************/
  39
  40 void m68328_timer_init(irqreturn_t (*timer_routine) (int, void *, struct pt_regs *));
  41 void m68328_timer_tick(void);
  42 unsigned long m68328_timer_gettimeoffset(void);
  43 void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);
  44
  45 /***************************************************************************/
  46 /*                        Init Drangon Engine hardware                     */
  47 /***************************************************************************/
  48 #if defined(CONFIG_DRAGEN2)
  49
  50 static void m68vz328_reset(void)
  51 {
  52         local_irq_disable();
  53
  54 #ifdef CONFIG_INIT_LCD
  55         PBDATA |= 0x20;                         /* disable CCFL light */
  56         PKDATA |= 0x4;                          /* disable LCD controller */
  57         LCKCON = 0;
  58 #endif
  59
  60         __asm__ __volatile__(
  61                 "reset\n\t"
  62                 "moveal #0x04000000, %a0\n\t"
  63                 "moveal 0(%a0), %sp\n\t"
  64                 "moveal 4(%a0), %a0\n\t"
  65                 "jmp (%a0)"
  66         );
  67 }
  68
  69 static void init_hardware(char *command, int size)
  70 {
  71 #ifdef CONFIG_DIRECT_IO_ACCESS
  72         SCR = 0x10;                                     /* allow user access to internal registers */
  73 #endif
  74
  75         /* CSGB Init */
  76         CSGBB = 0x4000;
  77         CSB = 0x1a1;
  78
  79         /* CS8900 init */
  80         /* PK3: hardware sleep function pin, active low */
  81         PKSEL |= PK(3);                         /* select pin as I/O */
  82         PKDIR |= PK(3);                         /* select pin as output */
  83         PKDATA |= PK(3);                        /* set pin high */
  84
  85         /* PF5: hardware reset function pin, active high */
  86         PFSEL |= PF(5);                         /* select pin as I/O */
  87         PFDIR |= PF(5);                         /* select pin as output */
  88         PFDATA &= ~PF(5);                       /* set pin low */
  89
  90         /* cs8900 hardware reset */
  91         PFDATA |= PF(5);
  92         { int i; for (i = 0; i < 32000; ++i); }
  93         PFDATA &= ~PF(5);
  94
  95         /* INT1 enable (cs8900 IRQ) */
  96         PDPOL &= ~PD(1);                        /* active high signal */
  97         PDIQEG &= ~PD(1);
  98         PDIRQEN |= PD(1);                       /* IRQ enabled */
  99
 100 #ifdef CONFIG_68328_SERIAL_UART2
 101         /* Enable RXD TXD port bits to enable UART2 */
 102         PJSEL &= ~(PJ(5) | PJ(4));
 103 #endif
 104
 105 #ifdef CONFIG_INIT_LCD
 106         /* initialize LCD controller */
 107         LSSA = (long) screen_bits;
 108         LVPW = 0x14;
 109         LXMAX = 0x140;
 110         LYMAX = 0xef;
 111         LRRA = 0;
 112         LPXCD = 3;
 113         LPICF = 0x08;
 114         LPOLCF = 0;
 115         LCKCON = 0x80;
 116         PCPDEN = 0xff;
 117         PCSEL = 0;
 118
 119         /* Enable LCD controller */
 120         PKDIR |= 0x4;
 121         PKSEL |= 0x4;
 122         PKDATA &= ~0x4;
 123
 124         /* Enable CCFL backlighting circuit */
 125         PBDIR |= 0x20;
 126         PBSEL |= 0x20;
 127         PBDATA &= ~0x20;
 128
 129         /* contrast control register */
 130         PFDIR |= 0x1;
 131         PFSEL &= ~0x1;
 132         PWMR = 0x037F;
 133 #endif
 134 }
 135
 136 /***************************************************************************/
 137 /*                      Init RT-Control uCdimm hardware                    */
 138 /***************************************************************************/
 139 #elif defined(CONFIG_UCDIMM)
 140
 141 static void m68vz328_reset(void)
 142 {
 143         local_irq_disable();
 144         asm volatile ("
 145                 moveal #0x10c00000, %a0;
 146                 moveb #0, 0xFFFFF300;
 147                 moveal 0(%a0), %sp;
 148                 moveal 4(%a0), %a0;
 149                 jmp (%a0);
 150         ");
 151 }
 152
 153 unsigned char *cs8900a_hwaddr;
 154 static int errno;
 155
 156 _bsc0(char *, getserialnum)
 157 _bsc1(unsigned char *, gethwaddr, int, a)
 158 _bsc1(char *, getbenv, char *, a)
 159
 160 static void init_hardware(char *command, int size)
 161 {
 162         char *p;
 163
 164         printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
 165         p = cs8900a_hwaddr = gethwaddr(0);
 166         printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
 167                 p[0], p[1], p[2], p[3], p[4], p[5]);
 168         p = getbenv("APPEND");
 169         if (p)
 170                 strcpy(p, command);
 171         else
 172                 command[0] = 0;
 173 }
 174
 175 /***************************************************************************/
 176 #else
 177
 178 static void m68vz328_reset(void)
 179 {
 180 }
 181
 182 static void init_hardware(char *command, int size)
 183 {
 184 }
 185
 186 /***************************************************************************/
 187 #endif
 188 /***************************************************************************/
 189
 190 void config_BSP(char *command, int size)
 191 {
 192         printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
 193
 194 #if defined(CONFIG_BOOTPARAM)
 195         strncpy(command, CONFIG_BOOTPARAM_STRING, size);
 196         command[size-1] = 0;
 197 #else
 198         memset(command, 0, size);
 199 #endif
 200
 201         init_hardware(command, size);
 202
 203         mach_sched_init = (void *) m68328_timer_init;
 204         mach_tick = m68328_timer_tick;
 205         mach_gettimeoffset = m68328_timer_gettimeoffset;
 206         mach_gettod = m68328_timer_gettod;
 207         mach_reset = m68vz328_reset;
 208 }
 209
 210 /***************************************************************************/