1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/init.h>
3 #include <linux/types.h>
4 #include <linux/kernel.h>
7 #include <linux/console.h>
9 #include <linux/vt_kern.h>
10 #include <linux/interrupt.h>
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>
18 #include <asm/machdep.h>
20 u_long sio01_physaddr;
21 u_long sio23_physaddr;
25 u_long cpuctrl_physaddr;
26 u_long timer_physaddr;
29 extern void dn_sched_init(void);
30 extern void dn_init_IRQ(void);
31 extern int dn_dummy_hwclk(int, struct rtc_time *);
32 extern void dn_dummy_reset(void);
33 #ifdef CONFIG_HEARTBEAT
34 static void dn_heartbeat(int on);
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)"
46 int __init apollo_parse_bootinfo(const struct bi_record *record)
49 const void *data = record->data;
51 switch (be16_to_cpu(record->tag)) {
53 apollo_model = be32_to_cpup(data);
63 static void __init dn_setup_model(void)
65 pr_info("Apollo hardware found: [%s]\n",
66 apollo_models[apollo_model - APOLLO_DN3000]);
68 switch(apollo_model) {
70 panic("Unknown apollo model");
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;
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;
91 panic("Apollo model not yet supported");
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;
103 panic("Undefined apollo model");
110 int dn_serial_console_wait_key(struct console *co) {
112 while(!(sio01.srb_csrb & 1))
114 return sio01.rhrb_thrb;
117 void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
121 sio01.rhrb_thrb = (unsigned char)'\r';
122 while (!(sio01.srb_csrb & 0x4))
125 sio01.rhrb_thrb = (unsigned char)*str++;
126 while (!(sio01.srb_csrb & 0x4))
131 void dn_serial_print (const char *str)
135 sio01.rhrb_thrb = (unsigned char)'\r';
136 while (!(sio01.srb_csrb & 0x4))
139 sio01.rhrb_thrb = (unsigned char)*str++;
140 while (!(sio01.srb_csrb & 0x4))
145 void __init config_apollo(void)
151 mach_sched_init=dn_sched_init; /* */
152 mach_init_IRQ=dn_init_IRQ;
153 mach_hwclk = dn_dummy_hwclk; /* */
154 mach_reset = dn_dummy_reset; /* */
155 #ifdef CONFIG_HEARTBEAT
156 mach_heartbeat = dn_heartbeat;
158 mach_get_model = dn_get_model;
162 /* clear DMA translation table */
168 irqreturn_t dn_timer_int(int irq, void *dev_id)
170 volatile unsigned char x;
172 legacy_timer_tick(1);
175 x = *(volatile unsigned char *)(apollo_timer + 3);
176 x = *(volatile unsigned char *)(apollo_timer + 5);
181 void dn_sched_init(void)
183 /* program timer 1 */
184 *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
185 *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
186 *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
187 *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
189 /* enable IRQ of PIC B */
190 *(volatile unsigned char *)(pica+1)&=(~8);
193 pr_info("*(0x10803) %02x\n",
194 *(volatile unsigned char *)(apollo_timer + 0x3));
195 pr_info("*(0x10803) %02x\n",
196 *(volatile unsigned char *)(apollo_timer + 0x3));
199 if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL))
200 pr_err("Couldn't register timer interrupt\n");
203 int dn_dummy_hwclk(int op, struct rtc_time *t) {
207 t->tm_sec=rtc->second;
208 t->tm_min=rtc->minute;
209 t->tm_hour=rtc->hours;
210 t->tm_mday=rtc->day_of_month;
211 t->tm_wday=rtc->day_of_week;
212 t->tm_mon = rtc->month - 1;
213 t->tm_year=rtc->year;
217 rtc->second=t->tm_sec;
218 rtc->minute=t->tm_min;
219 rtc->hours=t->tm_hour;
220 rtc->day_of_month=t->tm_mday;
222 rtc->day_of_week=t->tm_wday;
223 rtc->month = t->tm_mon + 1;
224 rtc->year = t->tm_year % 100;
231 void dn_dummy_reset(void) {
233 dn_serial_print("The end !\n");
239 void dn_dummy_waitbut(void) {
241 dn_serial_print("waitbut\n");
245 static void dn_get_model(char *model)
247 strcpy(model, "Apollo ");
248 if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
249 strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
252 #ifdef CONFIG_HEARTBEAT
253 static int dn_cpuctrl=0xff00;
255 static void dn_heartbeat(int on) {