arch/m68k/apollo/config.c

   1 #include <linux/config.h>
   2 #include <linux/types.h>
   3 #include <linux/kernel.h>
   4 #include <linux/mm.h>
   5 #include <linux/tty.h>
   6 #include <linux/console.h>
   7 #include <linux/rtc.h>
   8 #include <linux/vt_kern.h>
   9 #include <linux/interrupt.h>
  10
  11 #include <asm/setup.h>
  12 #include <asm/bootinfo.h>
  13 #include <asm/system.h>
  14 #include <asm/pgtable.h>
  15 #include <asm/apollohw.h>
  16 #include <asm/irq.h>
  17 #include <asm/rtc.h>
  18 #include <asm/machdep.h>
  19
  20 u_long sio01_physaddr;
  21 u_long sio23_physaddr;
  22 u_long rtc_physaddr;
  23 u_long pica_physaddr;
  24 u_long picb_physaddr;
  25 u_long cpuctrl_physaddr;
  26 u_long timer_physaddr;
  27 u_long apollo_model;
  28
  29 extern void dn_sched_init(irqreturn_t (*handler)(int,void *,struct pt_regs *));
  30 extern void dn_init_IRQ(void);
  31 extern unsigned long dn_gettimeoffset(void);
  32 extern int dn_dummy_hwclk(int, struct rtc_time *);
  33 extern int dn_dummy_set_clock_mmss(unsigned long);
  34 extern void dn_dummy_reset(void);
  35 extern void dn_dummy_waitbut(void);
  36 extern struct fb_info *dn_fb_init(long *);
  37 extern void dn_dummy_debug_init(void);
  38 extern irqreturn_t dn_process_int(int irq, struct pt_regs *fp);
  39 #ifdef CONFIG_HEARTBEAT
  40 static void dn_heartbeat(int on);
  41 #endif
  42 static irqreturn_t dn_timer_int(int irq,void *, struct pt_regs *);
  43 static void dn_get_model(char *model);
  44 static const char *apollo_models[] = {
  45         [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
  46         [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)",
  47         [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)",
  48         [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)",
  49         [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)"
  50 };
  51
  52 int apollo_parse_bootinfo(const struct bi_record *record) {
  53
  54         int unknown = 0;
  55         const unsigned long *data = record->data;
  56
  57         switch(record->tag) {
  58                 case BI_APOLLO_MODEL:
  59                         apollo_model=*data;
  60                         break;
  61
  62                 default:
  63                          unknown=1;
  64         }
  65
  66         return unknown;
  67 }
  68
  69 void dn_setup_model(void) {
  70
  71
  72         printk("Apollo hardware found: ");
  73         printk("[%s]\n", apollo_models[apollo_model - APOLLO_DN3000]);
  74
  75         switch(apollo_model) {
  76                 case APOLLO_UNKNOWN:
  77                         panic("Unknown apollo model");
  78                         break;
  79                 case APOLLO_DN3000:
  80                 case APOLLO_DN3010:
  81                         sio01_physaddr=SAU8_SIO01_PHYSADDR;
  82                         rtc_physaddr=SAU8_RTC_PHYSADDR;
  83                         pica_physaddr=SAU8_PICA;
  84                         picb_physaddr=SAU8_PICB;
  85                         cpuctrl_physaddr=SAU8_CPUCTRL;
  86                         timer_physaddr=SAU8_TIMER;
  87                         break;
  88                 case APOLLO_DN4000:
  89                         sio01_physaddr=SAU7_SIO01_PHYSADDR;
  90                         sio23_physaddr=SAU7_SIO23_PHYSADDR;
  91                         rtc_physaddr=SAU7_RTC_PHYSADDR;
  92                         pica_physaddr=SAU7_PICA;
  93                         picb_physaddr=SAU7_PICB;
  94                         cpuctrl_physaddr=SAU7_CPUCTRL;
  95                         timer_physaddr=SAU7_TIMER;
  96                         break;
  97                 case APOLLO_DN4500:
  98                         panic("Apollo model not yet supported");
  99                         break;
 100                 case APOLLO_DN3500:
 101                         sio01_physaddr=SAU7_SIO01_PHYSADDR;
 102                         sio23_physaddr=SAU7_SIO23_PHYSADDR;
 103                         rtc_physaddr=SAU7_RTC_PHYSADDR;
 104                         pica_physaddr=SAU7_PICA;
 105                         picb_physaddr=SAU7_PICB;
 106                         cpuctrl_physaddr=SAU7_CPUCTRL;
 107                         timer_physaddr=SAU7_TIMER;
 108                         break;
 109                 default:
 110                         panic("Undefined apollo model");
 111                         break;
 112         }
 113
 114
 115 }
 116
 117 int dn_serial_console_wait_key(struct console *co) {
 118
 119         while(!(sio01.srb_csrb & 1))
 120                 barrier();
 121         return sio01.rhrb_thrb;
 122 }
 123
 124 void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
 125 {
 126    while(count--) {
 127         if (*str == '\n') {
 128         sio01.rhrb_thrb = (unsigned char)'\r';
 129         while (!(sio01.srb_csrb & 0x4))
 130                 ;
 131         }
 132     sio01.rhrb_thrb = (unsigned char)*str++;
 133     while (!(sio01.srb_csrb & 0x4))
 134             ;
 135   }
 136 }
 137
 138 void dn_serial_print (const char *str)
 139 {
 140     while (*str) {
 141         if (*str == '\n') {
 142             sio01.rhrb_thrb = (unsigned char)'\r';
 143             while (!(sio01.srb_csrb & 0x4))
 144                 ;
 145         }
 146         sio01.rhrb_thrb = (unsigned char)*str++;
 147         while (!(sio01.srb_csrb & 0x4))
 148             ;
 149     }
 150 }
 151
 152 void config_apollo(void) {
 153
 154         int i;
 155
 156         dn_setup_model();
 157
 158         mach_sched_init=dn_sched_init; /* */
 159         mach_init_IRQ=dn_init_IRQ;
 160         mach_gettimeoffset   = dn_gettimeoffset;
 161         mach_max_dma_address = 0xffffffff;
 162         mach_hwclk           = dn_dummy_hwclk; /* */
 163         mach_set_clock_mmss  = dn_dummy_set_clock_mmss; /* */
 164         mach_reset           = dn_dummy_reset;  /* */
 165 #ifdef CONFIG_HEARTBEAT
 166         mach_heartbeat = dn_heartbeat;
 167 #endif
 168         mach_get_model       = dn_get_model;
 169
 170         cpuctrl=0xaa00;
 171
 172         /* clear DMA translation table */
 173         for(i=0;i<0x400;i++)
 174                 addr_xlat_map[i]=0;
 175
 176 }
 177
 178 irqreturn_t dn_timer_int(int irq, void *dev_id, struct pt_regs *fp)
 179 {
 180         irqreturn_t (*timer_handler)(int, void *, struct pt_regs *) = dev_id;
 181
 182         volatile unsigned char x;
 183
 184         timer_handler(irq, dev_id, fp);
 185
 186         x=*(volatile unsigned char *)(timer+3);
 187         x=*(volatile unsigned char *)(timer+5);
 188
 189         return IRQ_HANDLED;
 190 }
 191
 192 void dn_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *)) {
 193
 194         /* program timer 1 */
 195         *(volatile unsigned char *)(timer+3)=0x01;
 196         *(volatile unsigned char *)(timer+1)=0x40;
 197         *(volatile unsigned char *)(timer+5)=0x09;
 198         *(volatile unsigned char *)(timer+7)=0xc4;
 199
 200         /* enable IRQ of PIC B */
 201         *(volatile unsigned char *)(pica+1)&=(~8);
 202
 203 #if 0
 204         printk("*(0x10803) %02x\n",*(volatile unsigned char *)(timer+0x3));
 205         printk("*(0x10803) %02x\n",*(volatile unsigned char *)(timer+0x3));
 206 #endif
 207
 208         request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine);
 209 }
 210
 211 unsigned long dn_gettimeoffset(void) {
 212
 213         return 0xdeadbeef;
 214
 215 }
 216
 217 int dn_dummy_hwclk(int op, struct rtc_time *t) {
 218
 219
 220   if(!op) { /* read */
 221     t->tm_sec=rtc->second;
 222     t->tm_min=rtc->minute;
 223     t->tm_hour=rtc->hours;
 224     t->tm_mday=rtc->day_of_month;
 225     t->tm_wday=rtc->day_of_week;
 226     t->tm_mon=rtc->month;
 227     t->tm_year=rtc->year;
 228   } else {
 229     rtc->second=t->tm_sec;
 230     rtc->minute=t->tm_min;
 231     rtc->hours=t->tm_hour;
 232     rtc->day_of_month=t->tm_mday;
 233     if(t->tm_wday!=-1)
 234       rtc->day_of_week=t->tm_wday;
 235     rtc->month=t->tm_mon;
 236     rtc->year=t->tm_year;
 237   }
 238
 239   return 0;
 240
 241 }
 242
 243 int dn_dummy_set_clock_mmss(unsigned long nowtime) {
 244
 245   printk("set_clock_mmss\n");
 246
 247   return 0;
 248
 249 }
 250
 251 void dn_dummy_reset(void) {
 252
 253   dn_serial_print("The end !\n");
 254
 255   for(;;);
 256
 257 }
 258
 259 void dn_dummy_waitbut(void) {
 260
 261   dn_serial_print("waitbut\n");
 262
 263 }
 264
 265 static void dn_get_model(char *model)
 266 {
 267     strcpy(model, "Apollo ");
 268     if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
 269         strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
 270 }
 271
 272 #ifdef CONFIG_HEARTBEAT
 273 static int dn_cpuctrl=0xff00;
 274
 275 static void dn_heartbeat(int on) {
 276
 277         if(on) {
 278                 dn_cpuctrl&=~0x100;
 279                 cpuctrl=dn_cpuctrl;
 280         }
 281         else {
 282                 dn_cpuctrl&=~0x100;
 283                 dn_cpuctrl|=0x100;
 284                 cpuctrl=dn_cpuctrl;
 285         }
 286 }
 287 #endif
 288