arch/m68k/apollo/config.c

   1 #include <linux/types.h>
   2 #include <linux/kernel.h>
   3 #include <linux/mm.h>
   4 #include <linux/tty.h>
   5 #include <linux/console.h>
   6 #include <linux/rtc.h>
   7 #include <linux/vt_kern.h>
   8 #include <linux/interrupt.h>
   9
  10 #include <asm/setup.h>
  11 #include <asm/bootinfo.h>
  12 #include <asm/system.h>
  13 #include <asm/pgtable.h>
  14 #include <asm/apollohw.h>
  15 #include <asm/irq.h>
  16 #include <asm/rtc.h>
  17 #include <asm/machdep.h>
  18
  19 u_long sio01_physaddr;
  20 u_long sio23_physaddr;
  21 u_long rtc_physaddr;
  22 u_long pica_physaddr;
  23 u_long picb_physaddr;
  24 u_long cpuctrl_physaddr;
  25 u_long timer_physaddr;
  26 u_long apollo_model;
  27
  28 extern void dn_sched_init(irq_handler_t handler);
  29 extern void dn_init_IRQ(void);
  30 extern unsigned long dn_gettimeoffset(void);
  31 extern int dn_dummy_hwclk(int, struct rtc_time *);
  32 extern int dn_dummy_set_clock_mmss(unsigned long);
  33 extern void dn_dummy_reset(void);
  34 extern void dn_dummy_waitbut(void);
  35 extern struct fb_info *dn_fb_init(long *);
  36 extern void dn_dummy_debug_init(void);
  37 extern irqreturn_t dn_process_int(int irq, struct pt_regs *fp);
  38 #ifdef CONFIG_HEARTBEAT
  39 static void dn_heartbeat(int on);
  40 #endif
  41 static irqreturn_t dn_timer_int(int irq,void *);
  42 static void dn_get_model(char *model);
  43 static const char *apollo_models[] = {
  44         [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
  45         [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)",
  46         [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)",
  47         [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)",
  48         [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)"
  49 };
  50
  51 int apollo_parse_bootinfo(const struct bi_record *record) {
  52
  53         int unknown = 0;
  54         const unsigned long *data = record->data;
  55
  56         switch(record->tag) {
  57                 case BI_APOLLO_MODEL:
  58                         apollo_model=*data;
  59                         break;
  60
  61                 default:
  62                          unknown=1;
  63         }
  64
  65         return unknown;
  66 }
  67
  68 void dn_setup_model(void) {
  69
  70
  71         printk("Apollo hardware found: ");
  72         printk("[%s]\n", apollo_models[apollo_model - APOLLO_DN3000]);
  73
  74         switch(apollo_model) {
  75                 case APOLLO_UNKNOWN:
  76                         panic("Unknown apollo model");
  77                         break;
  78                 case APOLLO_DN3000:
  79                 case APOLLO_DN3010:
  80                         sio01_physaddr=SAU8_SIO01_PHYSADDR;
  81                         rtc_physaddr=SAU8_RTC_PHYSADDR;
  82                         pica_physaddr=SAU8_PICA;
  83                         picb_physaddr=SAU8_PICB;
  84                         cpuctrl_physaddr=SAU8_CPUCTRL;
  85                         timer_physaddr=SAU8_TIMER;
  86                         break;
  87                 case APOLLO_DN4000:
  88                         sio01_physaddr=SAU7_SIO01_PHYSADDR;
  89                         sio23_physaddr=SAU7_SIO23_PHYSADDR;
  90                         rtc_physaddr=SAU7_RTC_PHYSADDR;
  91                         pica_physaddr=SAU7_PICA;
  92                         picb_physaddr=SAU7_PICB;
  93                         cpuctrl_physaddr=SAU7_CPUCTRL;
  94                         timer_physaddr=SAU7_TIMER;
  95                         break;
  96                 case APOLLO_DN4500:
  97                         panic("Apollo model not yet supported");
  98                         break;
  99                 case APOLLO_DN3500:
 100                         sio01_physaddr=SAU7_SIO01_PHYSADDR;
 101                         sio23_physaddr=SAU7_SIO23_PHYSADDR;
 102                         rtc_physaddr=SAU7_RTC_PHYSADDR;
 103                         pica_physaddr=SAU7_PICA;
 104                         picb_physaddr=SAU7_PICB;
 105                         cpuctrl_physaddr=SAU7_CPUCTRL;
 106                         timer_physaddr=SAU7_TIMER;
 107                         break;
 108                 default:
 109                         panic("Undefined apollo model");
 110                         break;
 111         }
 112
 113
 114 }
 115
 116 int dn_serial_console_wait_key(struct console *co) {
 117
 118         while(!(sio01.srb_csrb & 1))
 119                 barrier();
 120         return sio01.rhrb_thrb;
 121 }
 122
 123 void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
 124 {
 125    while(count--) {
 126         if (*str == '\n') {
 127         sio01.rhrb_thrb = (unsigned char)'\r';
 128         while (!(sio01.srb_csrb & 0x4))
 129                 ;
 130         }
 131     sio01.rhrb_thrb = (unsigned char)*str++;
 132     while (!(sio01.srb_csrb & 0x4))
 133             ;
 134   }
 135 }
 136
 137 void dn_serial_print (const char *str)
 138 {
 139     while (*str) {
 140         if (*str == '\n') {
 141             sio01.rhrb_thrb = (unsigned char)'\r';
 142             while (!(sio01.srb_csrb & 0x4))
 143                 ;
 144         }
 145         sio01.rhrb_thrb = (unsigned char)*str++;
 146         while (!(sio01.srb_csrb & 0x4))
 147             ;
 148     }
 149 }
 150
 151 void __init config_apollo(void)
 152 {
 153         int i;
 154
 155         dn_setup_model();
 156
 157         mach_sched_init=dn_sched_init; /* */
 158         mach_init_IRQ=dn_init_IRQ;
 159         mach_gettimeoffset   = dn_gettimeoffset;
 160         mach_max_dma_address = 0xffffffff;
 161         mach_hwclk           = dn_dummy_hwclk; /* */
 162         mach_set_clock_mmss  = dn_dummy_set_clock_mmss; /* */
 163         mach_reset           = dn_dummy_reset;  /* */
 164 #ifdef CONFIG_HEARTBEAT
 165         mach_heartbeat = dn_heartbeat;
 166 #endif
 167         mach_get_model       = dn_get_model;
 168
 169         cpuctrl=0xaa00;
 170
 171         /* clear DMA translation table */
 172         for(i=0;i<0x400;i++)
 173                 addr_xlat_map[i]=0;
 174
 175 }
 176
 177 irqreturn_t dn_timer_int(int irq, void *dev_id)
 178 {
 179         irq_handler_t timer_handler = dev_id;
 180
 181         volatile unsigned char x;
 182
 183         timer_handler(irq, dev_id);
 184
 185         x=*(volatile unsigned char *)(timer+3);
 186         x=*(volatile unsigned char *)(timer+5);
 187
 188         return IRQ_HANDLED;
 189 }
 190
 191 void dn_sched_init(irq_handler_t timer_routine)
 192 {
 193         /* program timer 1 */
 194         *(volatile unsigned char *)(timer+3)=0x01;
 195         *(volatile unsigned char *)(timer+1)=0x40;
 196         *(volatile unsigned char *)(timer+5)=0x09;
 197         *(volatile unsigned char *)(timer+7)=0xc4;
 198
 199         /* enable IRQ of PIC B */
 200         *(volatile unsigned char *)(pica+1)&=(~8);
 201
 202 #if 0
 203         printk("*(0x10803) %02x\n",*(volatile unsigned char *)(timer+0x3));
 204         printk("*(0x10803) %02x\n",*(volatile unsigned char *)(timer+0x3));
 205 #endif
 206
 207         request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine);
 208 }
 209
 210 unsigned long dn_gettimeoffset(void) {
 211
 212         return 0xdeadbeef;
 213
 214 }
 215
 216 int dn_dummy_hwclk(int op, struct rtc_time *t) {
 217
 218
 219   if(!op) { /* read */
 220     t->tm_sec=rtc->second;
 221     t->tm_min=rtc->minute;
 222     t->tm_hour=rtc->hours;
 223     t->tm_mday=rtc->day_of_month;
 224     t->tm_wday=rtc->day_of_week;
 225     t->tm_mon=rtc->month;
 226     t->tm_year=rtc->year;
 227   } else {
 228     rtc->second=t->tm_sec;
 229     rtc->minute=t->tm_min;
 230     rtc->hours=t->tm_hour;
 231     rtc->day_of_month=t->tm_mday;
 232     if(t->tm_wday!=-1)
 233       rtc->day_of_week=t->tm_wday;
 234     rtc->month=t->tm_mon;
 235     rtc->year=t->tm_year;
 236   }
 237
 238   return 0;
 239
 240 }
 241
 242 int dn_dummy_set_clock_mmss(unsigned long nowtime) {
 243
 244   printk("set_clock_mmss\n");
 245
 246   return 0;
 247
 248 }
 249
 250 void dn_dummy_reset(void) {
 251
 252   dn_serial_print("The end !\n");
 253
 254   for(;;);
 255
 256 }
 257
 258 void dn_dummy_waitbut(void) {
 259
 260   dn_serial_print("waitbut\n");
 261
 262 }
 263
 264 static void dn_get_model(char *model)
 265 {
 266     strcpy(model, "Apollo ");
 267     if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
 268         strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
 269 }
 270
 271 #ifdef CONFIG_HEARTBEAT
 272 static int dn_cpuctrl=0xff00;
 273
 274 static void dn_heartbeat(int on) {
 275
 276         if(on) {
 277                 dn_cpuctrl&=~0x100;
 278                 cpuctrl=dn_cpuctrl;
 279         }
 280         else {
 281                 dn_cpuctrl&=~0x100;
 282                 dn_cpuctrl|=0x100;
 283                 cpuctrl=dn_cpuctrl;
 284         }
 285 }
 286 #endif
 287