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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/apollohw.h>
17#include <asm/irq.h>
18#include <asm/machdep.h>
19
20u_long sio01_physaddr;
21u_long sio23_physaddr;
22u_long rtc_physaddr;
23u_long pica_physaddr;
24u_long picb_physaddr;
25u_long cpuctrl_physaddr;
26u_long timer_physaddr;
27u_long apollo_model;
28
29extern void dn_sched_init(irq_handler_t handler);
30extern void dn_init_IRQ(void);
31extern int dn_dummy_hwclk(int, struct rtc_time *);
32extern void dn_dummy_reset(void);
33#ifdef CONFIG_HEARTBEAT
34static void dn_heartbeat(int on);
35#endif
36static irqreturn_t dn_timer_int(int irq,void *);
37static void dn_get_model(char *model);
38static 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
46int __init apollo_parse_bootinfo(const struct bi_record *record)
47{
48 int unknown = 0;
49 const void *data = record->data;
50
51 switch (be16_to_cpu(record->tag)) {
52 case BI_APOLLO_MODEL:
53 apollo_model = be32_to_cpup(data);
54 break;
55
56 default:
57 unknown=1;
58 }
59
60 return unknown;
61}
62
63static void __init dn_setup_model(void)
64{
65 pr_info("Apollo hardware found: [%s]\n",
66 apollo_models[apollo_model - APOLLO_DN3000]);
67
68 switch(apollo_model) {
69 case APOLLO_UNKNOWN:
70 panic("Unknown apollo model");
71 break;
72 case APOLLO_DN3000:
73 case APOLLO_DN3010:
74 sio01_physaddr=SAU8_SIO01_PHYSADDR;
75 rtc_physaddr=SAU8_RTC_PHYSADDR;
76 pica_physaddr=SAU8_PICA;
77 picb_physaddr=SAU8_PICB;
78 cpuctrl_physaddr=SAU8_CPUCTRL;
79 timer_physaddr=SAU8_TIMER;
80 break;
81 case APOLLO_DN4000:
82 sio01_physaddr=SAU7_SIO01_PHYSADDR;
83 sio23_physaddr=SAU7_SIO23_PHYSADDR;
84 rtc_physaddr=SAU7_RTC_PHYSADDR;
85 pica_physaddr=SAU7_PICA;
86 picb_physaddr=SAU7_PICB;
87 cpuctrl_physaddr=SAU7_CPUCTRL;
88 timer_physaddr=SAU7_TIMER;
89 break;
90 case APOLLO_DN4500:
91 panic("Apollo model not yet supported");
92 break;
93 case APOLLO_DN3500:
94 sio01_physaddr=SAU7_SIO01_PHYSADDR;
95 sio23_physaddr=SAU7_SIO23_PHYSADDR;
96 rtc_physaddr=SAU7_RTC_PHYSADDR;
97 pica_physaddr=SAU7_PICA;
98 picb_physaddr=SAU7_PICB;
99 cpuctrl_physaddr=SAU7_CPUCTRL;
100 timer_physaddr=SAU7_TIMER;
101 break;
102 default:
103 panic("Undefined apollo model");
104 break;
105 }
106
107
108}
109
110int dn_serial_console_wait_key(struct console *co) {
111
112 while(!(sio01.srb_csrb & 1))
113 barrier();
114 return sio01.rhrb_thrb;
115}
116
117void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
118{
119 while(count--) {
120 if (*str == '\n') {
121 sio01.rhrb_thrb = (unsigned char)'\r';
122 while (!(sio01.srb_csrb & 0x4))
123 ;
124 }
125 sio01.rhrb_thrb = (unsigned char)*str++;
126 while (!(sio01.srb_csrb & 0x4))
127 ;
128 }
129}
130
131void dn_serial_print (const char *str)
132{
133 while (*str) {
134 if (*str == '\n') {
135 sio01.rhrb_thrb = (unsigned char)'\r';
136 while (!(sio01.srb_csrb & 0x4))
137 ;
138 }
139 sio01.rhrb_thrb = (unsigned char)*str++;
140 while (!(sio01.srb_csrb & 0x4))
141 ;
142 }
143}
144
145void __init config_apollo(void)
146{
147 int i;
148
149 dn_setup_model();
150
151 mach_sched_init=dn_sched_init; /* */
152 mach_init_IRQ=dn_init_IRQ;
153 mach_max_dma_address = 0xffffffff;
154 mach_hwclk = dn_dummy_hwclk; /* */
155 mach_reset = dn_dummy_reset; /* */
156#ifdef CONFIG_HEARTBEAT
157 mach_heartbeat = dn_heartbeat;
158#endif
159 mach_get_model = dn_get_model;
160
161 cpuctrl=0xaa00;
162
163 /* clear DMA translation table */
164 for(i=0;i<0x400;i++)
165 addr_xlat_map[i]=0;
166
167}
168
169irqreturn_t dn_timer_int(int irq, void *dev_id)
170{
171 irq_handler_t timer_handler = dev_id;
172
173 volatile unsigned char x;
174
175 timer_handler(irq, dev_id);
176
177 x = *(volatile unsigned char *)(apollo_timer + 3);
178 x = *(volatile unsigned char *)(apollo_timer + 5);
179
180 return IRQ_HANDLED;
181}
182
183void dn_sched_init(irq_handler_t timer_routine)
184{
185 /* program timer 1 */
186 *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
187 *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
188 *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
189 *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
190
191 /* enable IRQ of PIC B */
192 *(volatile unsigned char *)(pica+1)&=(~8);
193
194#if 0
195 pr_info("*(0x10803) %02x\n",
196 *(volatile unsigned char *)(apollo_timer + 0x3));
197 pr_info("*(0x10803) %02x\n",
198 *(volatile unsigned char *)(apollo_timer + 0x3));
199#endif
200
201 if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine))
202 pr_err("Couldn't register timer interrupt\n");
203}
204
205int dn_dummy_hwclk(int op, struct rtc_time *t) {
206
207
208 if(!op) { /* read */
209 t->tm_sec=rtc->second;
210 t->tm_min=rtc->minute;
211 t->tm_hour=rtc->hours;
212 t->tm_mday=rtc->day_of_month;
213 t->tm_wday=rtc->day_of_week;
214 t->tm_mon = rtc->month - 1;
215 t->tm_year=rtc->year;
216 if (t->tm_year < 70)
217 t->tm_year += 100;
218 } else {
219 rtc->second=t->tm_sec;
220 rtc->minute=t->tm_min;
221 rtc->hours=t->tm_hour;
222 rtc->day_of_month=t->tm_mday;
223 if(t->tm_wday!=-1)
224 rtc->day_of_week=t->tm_wday;
225 rtc->month = t->tm_mon + 1;
226 rtc->year = t->tm_year % 100;
227 }
228
229 return 0;
230
231}
232
233void dn_dummy_reset(void) {
234
235 dn_serial_print("The end !\n");
236
237 for(;;);
238
239}
240
241void dn_dummy_waitbut(void) {
242
243 dn_serial_print("waitbut\n");
244
245}
246
247static void dn_get_model(char *model)
248{
249 strcpy(model, "Apollo ");
250 if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
251 strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
252}
253
254#ifdef CONFIG_HEARTBEAT
255static int dn_cpuctrl=0xff00;
256
257static void dn_heartbeat(int on) {
258
259 if(on) {
260 dn_cpuctrl&=~0x100;
261 cpuctrl=dn_cpuctrl;
262 }
263 else {
264 dn_cpuctrl&=~0x100;
265 dn_cpuctrl|=0x100;
266 cpuctrl=dn_cpuctrl;
267 }
268}
269#endif
270
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/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/bootinfo-apollo.h>
14#include <asm/byteorder.h>
15#include <asm/apollohw.h>
16#include <asm/irq.h>
17#include <asm/machdep.h>
18#include <asm/config.h>
19
20#include "apollo.h"
21
22u_long sio01_physaddr;
23u_long sio23_physaddr;
24u_long rtc_physaddr;
25u_long pica_physaddr;
26u_long picb_physaddr;
27u_long cpuctrl_physaddr;
28u_long timer_physaddr;
29u_long apollo_model;
30
31extern void dn_sched_init(void);
32extern int dn_dummy_hwclk(int, struct rtc_time *);
33static void dn_dummy_reset(void);
34#ifdef CONFIG_HEARTBEAT
35static void dn_heartbeat(int on);
36#endif
37static irqreturn_t dn_timer_int(int irq,void *);
38static void dn_get_model(char *model);
39static const char *apollo_models[] = {
40 [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
41 [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)",
42 [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)",
43 [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)",
44 [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)"
45};
46
47int __init apollo_parse_bootinfo(const struct bi_record *record)
48{
49 int unknown = 0;
50 const void *data = record->data;
51
52 switch (be16_to_cpu(record->tag)) {
53 case BI_APOLLO_MODEL:
54 apollo_model = be32_to_cpup(data);
55 break;
56
57 default:
58 unknown=1;
59 }
60
61 return unknown;
62}
63
64static void __init dn_setup_model(void)
65{
66 pr_info("Apollo hardware found: [%s]\n",
67 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
111static void dn_serial_print(const char *str)
112{
113 while (*str) {
114 if (*str == '\n') {
115 sio01.rhrb_thrb = (unsigned char)'\r';
116 while (!(sio01.srb_csrb & 0x4))
117 ;
118 }
119 sio01.rhrb_thrb = (unsigned char)*str++;
120 while (!(sio01.srb_csrb & 0x4))
121 ;
122 }
123}
124
125void __init config_apollo(void)
126{
127 int i;
128
129 dn_setup_model();
130
131 mach_sched_init=dn_sched_init; /* */
132 mach_init_IRQ=dn_init_IRQ;
133 mach_hwclk = dn_dummy_hwclk; /* */
134 mach_reset = dn_dummy_reset; /* */
135#ifdef CONFIG_HEARTBEAT
136 mach_heartbeat = dn_heartbeat;
137#endif
138 mach_get_model = dn_get_model;
139
140 cpuctrl=0xaa00;
141
142 /* clear DMA translation table */
143 for(i=0;i<0x400;i++)
144 addr_xlat_map[i]=0;
145
146}
147
148irqreturn_t dn_timer_int(int irq, void *dev_id)
149{
150 unsigned char *at = (unsigned char *)apollo_timer;
151
152 legacy_timer_tick(1);
153 timer_heartbeat();
154
155 READ_ONCE(*(at + 3));
156 READ_ONCE(*(at + 5));
157
158 return IRQ_HANDLED;
159}
160
161void dn_sched_init(void)
162{
163 /* program timer 1 */
164 *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
165 *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
166 *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
167 *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
168
169 /* enable IRQ of PIC B */
170 *(volatile unsigned char *)(pica+1)&=(~8);
171
172#if 0
173 pr_info("*(0x10803) %02x\n",
174 *(volatile unsigned char *)(apollo_timer + 0x3));
175 pr_info("*(0x10803) %02x\n",
176 *(volatile unsigned char *)(apollo_timer + 0x3));
177#endif
178
179 if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL))
180 pr_err("Couldn't register timer interrupt\n");
181}
182
183int dn_dummy_hwclk(int op, struct rtc_time *t) {
184
185
186 if(!op) { /* read */
187 t->tm_sec=rtc->second;
188 t->tm_min=rtc->minute;
189 t->tm_hour=rtc->hours;
190 t->tm_mday=rtc->day_of_month;
191 t->tm_wday=rtc->day_of_week;
192 t->tm_mon = rtc->month - 1;
193 t->tm_year=rtc->year;
194 if (t->tm_year < 70)
195 t->tm_year += 100;
196 } else {
197 rtc->second=t->tm_sec;
198 rtc->minute=t->tm_min;
199 rtc->hours=t->tm_hour;
200 rtc->day_of_month=t->tm_mday;
201 if(t->tm_wday!=-1)
202 rtc->day_of_week=t->tm_wday;
203 rtc->month = t->tm_mon + 1;
204 rtc->year = t->tm_year % 100;
205 }
206
207 return 0;
208
209}
210
211static void dn_dummy_reset(void)
212{
213 dn_serial_print("The end !\n");
214
215 for(;;);
216
217}
218
219static void dn_get_model(char *model)
220{
221 strcpy(model, "Apollo ");
222 if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
223 strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
224}
225
226#ifdef CONFIG_HEARTBEAT
227static int dn_cpuctrl=0xff00;
228
229static void dn_heartbeat(int on) {
230
231 if(on) {
232 dn_cpuctrl&=~0x100;
233 cpuctrl=dn_cpuctrl;
234 }
235 else {
236 dn_cpuctrl&=~0x100;
237 dn_cpuctrl|=0x100;
238 cpuctrl=dn_cpuctrl;
239 }
240}
241#endif
242