1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/init.h> 3 #include <linux/types.h> 4 #include <linux/kernel.h> 5 #include <linux/mm.h> 6 #include <linux/tty.h> 7 #include <linux/console.h> 8 #include <linux/rtc.h> 9 #include <linux/vt_kern.h> 10 #include <linux/interrupt.h> 11 12 #include <asm/setup.h> 13 #include <asm/bootinfo.h> 14 #include <asm/bootinfo-apollo.h> 15 #include <asm/byteorder.h> 16 #include <asm/pgtable.h> 17 #include <asm/apollohw.h> 18 #include <asm/irq.h> 19 #include <asm/machdep.h> 20 21 u_long sio01_physaddr; 22 u_long sio23_physaddr; 23 u_long rtc_physaddr; 24 u_long pica_physaddr; 25 u_long picb_physaddr; 26 u_long cpuctrl_physaddr; 27 u_long timer_physaddr; 28 u_long apollo_model; 29 30 extern void dn_sched_init(irq_handler_t handler); 31 extern void dn_init_IRQ(void); 32 extern u32 dn_gettimeoffset(void); 33 extern int dn_dummy_hwclk(int, struct rtc_time *); 34 extern void dn_dummy_reset(void); 35 #ifdef CONFIG_HEARTBEAT 36 static void dn_heartbeat(int on); 37 #endif 38 static irqreturn_t dn_timer_int(int irq,void *); 39 static void dn_get_model(char *model); 40 static const char *apollo_models[] = { 41 [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)", 42 [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)", 43 [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)", 44 [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)", 45 [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)" 46 }; 47 48 int __init apollo_parse_bootinfo(const struct bi_record *record) 49 { 50 int unknown = 0; 51 const void *data = record->data; 52 53 switch (be16_to_cpu(record->tag)) { 54 case BI_APOLLO_MODEL: 55 apollo_model = be32_to_cpup(data); 56 break; 57 58 default: 59 unknown=1; 60 } 61 62 return unknown; 63 } 64 65 static void __init dn_setup_model(void) 66 { 67 pr_info("Apollo hardware found: [%s]\n", 68 apollo_models[apollo_model - APOLLO_DN3000]); 69 70 switch(apollo_model) { 71 case APOLLO_UNKNOWN: 72 panic("Unknown apollo model"); 73 break; 74 case APOLLO_DN3000: 75 case APOLLO_DN3010: 76 sio01_physaddr=SAU8_SIO01_PHYSADDR; 77 rtc_physaddr=SAU8_RTC_PHYSADDR; 78 pica_physaddr=SAU8_PICA; 79 picb_physaddr=SAU8_PICB; 80 cpuctrl_physaddr=SAU8_CPUCTRL; 81 timer_physaddr=SAU8_TIMER; 82 break; 83 case APOLLO_DN4000: 84 sio01_physaddr=SAU7_SIO01_PHYSADDR; 85 sio23_physaddr=SAU7_SIO23_PHYSADDR; 86 rtc_physaddr=SAU7_RTC_PHYSADDR; 87 pica_physaddr=SAU7_PICA; 88 picb_physaddr=SAU7_PICB; 89 cpuctrl_physaddr=SAU7_CPUCTRL; 90 timer_physaddr=SAU7_TIMER; 91 break; 92 case APOLLO_DN4500: 93 panic("Apollo model not yet supported"); 94 break; 95 case APOLLO_DN3500: 96 sio01_physaddr=SAU7_SIO01_PHYSADDR; 97 sio23_physaddr=SAU7_SIO23_PHYSADDR; 98 rtc_physaddr=SAU7_RTC_PHYSADDR; 99 pica_physaddr=SAU7_PICA; 100 picb_physaddr=SAU7_PICB; 101 cpuctrl_physaddr=SAU7_CPUCTRL; 102 timer_physaddr=SAU7_TIMER; 103 break; 104 default: 105 panic("Undefined apollo model"); 106 break; 107 } 108 109 110 } 111 112 int dn_serial_console_wait_key(struct console *co) { 113 114 while(!(sio01.srb_csrb & 1)) 115 barrier(); 116 return sio01.rhrb_thrb; 117 } 118 119 void dn_serial_console_write (struct console *co, const char *str,unsigned int count) 120 { 121 while(count--) { 122 if (*str == '\n') { 123 sio01.rhrb_thrb = (unsigned char)'\r'; 124 while (!(sio01.srb_csrb & 0x4)) 125 ; 126 } 127 sio01.rhrb_thrb = (unsigned char)*str++; 128 while (!(sio01.srb_csrb & 0x4)) 129 ; 130 } 131 } 132 133 void dn_serial_print (const char *str) 134 { 135 while (*str) { 136 if (*str == '\n') { 137 sio01.rhrb_thrb = (unsigned char)'\r'; 138 while (!(sio01.srb_csrb & 0x4)) 139 ; 140 } 141 sio01.rhrb_thrb = (unsigned char)*str++; 142 while (!(sio01.srb_csrb & 0x4)) 143 ; 144 } 145 } 146 147 void __init config_apollo(void) 148 { 149 int i; 150 151 dn_setup_model(); 152 153 mach_sched_init=dn_sched_init; /* */ 154 mach_init_IRQ=dn_init_IRQ; 155 arch_gettimeoffset = dn_gettimeoffset; 156 mach_max_dma_address = 0xffffffff; 157 mach_hwclk = dn_dummy_hwclk; /* */ 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 *)(apollo_timer + 3); 181 x = *(volatile unsigned char *)(apollo_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 *)(apollo_timer + 3) = 0x01; 190 *(volatile unsigned char *)(apollo_timer + 1) = 0x40; 191 *(volatile unsigned char *)(apollo_timer + 5) = 0x09; 192 *(volatile unsigned char *)(apollo_timer + 7) = 0xc4; 193 194 /* enable IRQ of PIC B */ 195 *(volatile unsigned char *)(pica+1)&=(~8); 196 197 #if 0 198 pr_info("*(0x10803) %02x\n", 199 *(volatile unsigned char *)(apollo_timer + 0x3)); 200 pr_info("*(0x10803) %02x\n", 201 *(volatile unsigned char *)(apollo_timer + 0x3)); 202 #endif 203 204 if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine)) 205 pr_err("Couldn't register timer interrupt\n"); 206 } 207 208 u32 dn_gettimeoffset(void) 209 { 210 return 0xdeadbeef; 211 } 212 213 int dn_dummy_hwclk(int op, struct rtc_time *t) { 214 215 216 if(!op) { /* read */ 217 t->tm_sec=rtc->second; 218 t->tm_min=rtc->minute; 219 t->tm_hour=rtc->hours; 220 t->tm_mday=rtc->day_of_month; 221 t->tm_wday=rtc->day_of_week; 222 t->tm_mon = rtc->month - 1; 223 t->tm_year=rtc->year; 224 if (t->tm_year < 70) 225 t->tm_year += 100; 226 } else { 227 rtc->second=t->tm_sec; 228 rtc->minute=t->tm_min; 229 rtc->hours=t->tm_hour; 230 rtc->day_of_month=t->tm_mday; 231 if(t->tm_wday!=-1) 232 rtc->day_of_week=t->tm_wday; 233 rtc->month = t->tm_mon + 1; 234 rtc->year = t->tm_year % 100; 235 } 236 237 return 0; 238 239 } 240 241 void dn_dummy_reset(void) { 242 243 dn_serial_print("The end !\n"); 244 245 for(;;); 246 247 } 248 249 void dn_dummy_waitbut(void) { 250 251 dn_serial_print("waitbut\n"); 252 253 } 254 255 static void dn_get_model(char *model) 256 { 257 strcpy(model, "Apollo "); 258 if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500) 259 strcat(model, apollo_models[apollo_model - APOLLO_DN3000]); 260 } 261 262 #ifdef CONFIG_HEARTBEAT 263 static int dn_cpuctrl=0xff00; 264 265 static void dn_heartbeat(int on) { 266 267 if(on) { 268 dn_cpuctrl&=~0x100; 269 cpuctrl=dn_cpuctrl; 270 } 271 else { 272 dn_cpuctrl&=~0x100; 273 dn_cpuctrl|=0x100; 274 cpuctrl=dn_cpuctrl; 275 } 276 } 277 #endif 278 279