xref: /openbmc/linux/arch/m68k/apollo/config.c (revision 12eb4683)
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 u32 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 	arch_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 *)(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 	printk("*(0x10803) %02x\n",*(volatile unsigned char *)(apollo_timer + 0x3));
199 	printk("*(0x10803) %02x\n",*(volatile unsigned char *)(apollo_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 u32 dn_gettimeoffset(void)
207 {
208 	return 0xdeadbeef;
209 }
210 
211 int dn_dummy_hwclk(int op, struct rtc_time *t) {
212 
213 
214   if(!op) { /* read */
215     t->tm_sec=rtc->second;
216     t->tm_min=rtc->minute;
217     t->tm_hour=rtc->hours;
218     t->tm_mday=rtc->day_of_month;
219     t->tm_wday=rtc->day_of_week;
220     t->tm_mon=rtc->month;
221     t->tm_year=rtc->year;
222   } else {
223     rtc->second=t->tm_sec;
224     rtc->minute=t->tm_min;
225     rtc->hours=t->tm_hour;
226     rtc->day_of_month=t->tm_mday;
227     if(t->tm_wday!=-1)
228       rtc->day_of_week=t->tm_wday;
229     rtc->month=t->tm_mon;
230     rtc->year=t->tm_year;
231   }
232 
233   return 0;
234 
235 }
236 
237 int dn_dummy_set_clock_mmss(unsigned long nowtime) {
238 
239   printk("set_clock_mmss\n");
240 
241   return 0;
242 
243 }
244 
245 void dn_dummy_reset(void) {
246 
247   dn_serial_print("The end !\n");
248 
249   for(;;);
250 
251 }
252 
253 void dn_dummy_waitbut(void) {
254 
255   dn_serial_print("waitbut\n");
256 
257 }
258 
259 static void dn_get_model(char *model)
260 {
261     strcpy(model, "Apollo ");
262     if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
263         strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
264 }
265 
266 #ifdef CONFIG_HEARTBEAT
267 static int dn_cpuctrl=0xff00;
268 
269 static void dn_heartbeat(int on) {
270 
271 	if(on) {
272 		dn_cpuctrl&=~0x100;
273 		cpuctrl=dn_cpuctrl;
274 	}
275 	else {
276 		dn_cpuctrl&=~0x100;
277 		dn_cpuctrl|=0x100;
278 		cpuctrl=dn_cpuctrl;
279 	}
280 }
281 #endif
282 
283