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/pgtable.h>
17 #include <asm/apollohw.h>
19 #include <asm/machdep.h>
21 u_long sio01_physaddr;
22 u_long sio23_physaddr;
26 u_long cpuctrl_physaddr;
27 u_long timer_physaddr;
30 extern void dn_sched_init(irq_handler_t handler);
31 extern void dn_init_IRQ(void);
32 extern int dn_dummy_hwclk(int, struct rtc_time *);
33 extern void dn_dummy_reset(void);
34 #ifdef CONFIG_HEARTBEAT
35 static void dn_heartbeat(int on);
37 static irqreturn_t dn_timer_int(int irq,void *);
38 static void dn_get_model(char *model);
39 static 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)"
47 int __init apollo_parse_bootinfo(const struct bi_record *record)
50 const void *data = record->data;
52 switch (be16_to_cpu(record->tag)) {
54 apollo_model = be32_to_cpup(data);
64 static void __init dn_setup_model(void)
66 pr_info("Apollo hardware found: [%s]\n",
67 apollo_models[apollo_model - APOLLO_DN3000]);
69 switch(apollo_model) {
71 panic("Unknown apollo model");
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;
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;
92 panic("Apollo model not yet supported");
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;
104 panic("Undefined apollo model");
111 int dn_serial_console_wait_key(struct console *co) {
113 while(!(sio01.srb_csrb & 1))
115 return sio01.rhrb_thrb;
118 void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
122 sio01.rhrb_thrb = (unsigned char)'\r';
123 while (!(sio01.srb_csrb & 0x4))
126 sio01.rhrb_thrb = (unsigned char)*str++;
127 while (!(sio01.srb_csrb & 0x4))
132 void dn_serial_print (const char *str)
136 sio01.rhrb_thrb = (unsigned char)'\r';
137 while (!(sio01.srb_csrb & 0x4))
140 sio01.rhrb_thrb = (unsigned char)*str++;
141 while (!(sio01.srb_csrb & 0x4))
146 void __init config_apollo(void)
152 mach_sched_init=dn_sched_init; /* */
153 mach_init_IRQ=dn_init_IRQ;
154 mach_max_dma_address = 0xffffffff;
155 mach_hwclk = dn_dummy_hwclk; /* */
156 mach_reset = dn_dummy_reset; /* */
157 #ifdef CONFIG_HEARTBEAT
158 mach_heartbeat = dn_heartbeat;
160 mach_get_model = dn_get_model;
164 /* clear DMA translation table */
170 irqreturn_t dn_timer_int(int irq, void *dev_id)
172 irq_handler_t timer_handler = dev_id;
174 volatile unsigned char x;
176 timer_handler(irq, dev_id);
178 x = *(volatile unsigned char *)(apollo_timer + 3);
179 x = *(volatile unsigned char *)(apollo_timer + 5);
184 void dn_sched_init(irq_handler_t timer_routine)
186 /* program timer 1 */
187 *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
188 *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
189 *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
190 *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
192 /* enable IRQ of PIC B */
193 *(volatile unsigned char *)(pica+1)&=(~8);
196 pr_info("*(0x10803) %02x\n",
197 *(volatile unsigned char *)(apollo_timer + 0x3));
198 pr_info("*(0x10803) %02x\n",
199 *(volatile unsigned char *)(apollo_timer + 0x3));
202 if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", timer_routine))
203 pr_err("Couldn't register timer interrupt\n");
206 int dn_dummy_hwclk(int op, struct rtc_time *t) {
210 t->tm_sec=rtc->second;
211 t->tm_min=rtc->minute;
212 t->tm_hour=rtc->hours;
213 t->tm_mday=rtc->day_of_month;
214 t->tm_wday=rtc->day_of_week;
215 t->tm_mon = rtc->month - 1;
216 t->tm_year=rtc->year;
220 rtc->second=t->tm_sec;
221 rtc->minute=t->tm_min;
222 rtc->hours=t->tm_hour;
223 rtc->day_of_month=t->tm_mday;
225 rtc->day_of_week=t->tm_wday;
226 rtc->month = t->tm_mon + 1;
227 rtc->year = t->tm_year % 100;
234 void dn_dummy_reset(void) {
236 dn_serial_print("The end !\n");
242 void dn_dummy_waitbut(void) {
244 dn_serial_print("waitbut\n");
248 static void dn_get_model(char *model)
250 strcpy(model, "Apollo ");
251 if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
252 strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
255 #ifdef CONFIG_HEARTBEAT
256 static int dn_cpuctrl=0xff00;
258 static void dn_heartbeat(int on) {