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