1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
2a4df02a2SGeert Uytterhoeven #include <linux/init.h>
31da177e4SLinus Torvalds #include <linux/types.h>
41da177e4SLinus Torvalds #include <linux/kernel.h>
51da177e4SLinus Torvalds #include <linux/mm.h>
61da177e4SLinus Torvalds #include <linux/tty.h>
71da177e4SLinus Torvalds #include <linux/rtc.h>
81da177e4SLinus Torvalds #include <linux/vt_kern.h>
91da177e4SLinus Torvalds #include <linux/interrupt.h>
101da177e4SLinus Torvalds
111da177e4SLinus Torvalds #include <asm/setup.h>
121da177e4SLinus Torvalds #include <asm/bootinfo.h>
134c3c522bSGeert Uytterhoeven #include <asm/bootinfo-apollo.h>
14abe48101SGeert Uytterhoeven #include <asm/byteorder.h>
151da177e4SLinus Torvalds #include <asm/apollohw.h>
161da177e4SLinus Torvalds #include <asm/irq.h>
171da177e4SLinus Torvalds #include <asm/machdep.h>
1891d7b75aSLaurent Vivier #include <asm/config.h>
191da177e4SLinus Torvalds
20*676ca3c3SGeert Uytterhoeven #include "apollo.h"
21*676ca3c3SGeert Uytterhoeven
221da177e4SLinus Torvalds u_long sio01_physaddr;
231da177e4SLinus Torvalds u_long sio23_physaddr;
241da177e4SLinus Torvalds u_long rtc_physaddr;
251da177e4SLinus Torvalds u_long pica_physaddr;
261da177e4SLinus Torvalds u_long picb_physaddr;
271da177e4SLinus Torvalds u_long cpuctrl_physaddr;
281da177e4SLinus Torvalds u_long timer_physaddr;
291da177e4SLinus Torvalds u_long apollo_model;
301da177e4SLinus Torvalds
31f9a01539SArnd Bergmann extern void dn_sched_init(void);
321da177e4SLinus Torvalds extern int dn_dummy_hwclk(int, struct rtc_time *);
3355775fe9SGeert Uytterhoeven static void dn_dummy_reset(void);
341da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT
351da177e4SLinus Torvalds static void dn_heartbeat(int on);
361da177e4SLinus Torvalds #endif
372850bc27SAl Viro static irqreturn_t dn_timer_int(int irq,void *);
381da177e4SLinus Torvalds static void dn_get_model(char *model);
391da177e4SLinus Torvalds static const char *apollo_models[] = {
401da177e4SLinus Torvalds [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
411da177e4SLinus Torvalds [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)",
421da177e4SLinus Torvalds [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)",
431da177e4SLinus Torvalds [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)",
441da177e4SLinus Torvalds [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)"
451da177e4SLinus Torvalds };
461da177e4SLinus Torvalds
apollo_parse_bootinfo(const struct bi_record * record)47a4df02a2SGeert Uytterhoeven int __init apollo_parse_bootinfo(const struct bi_record *record)
48a4df02a2SGeert Uytterhoeven {
491da177e4SLinus Torvalds int unknown = 0;
50abe48101SGeert Uytterhoeven const void *data = record->data;
511da177e4SLinus Torvalds
52abe48101SGeert Uytterhoeven switch (be16_to_cpu(record->tag)) {
531da177e4SLinus Torvalds case BI_APOLLO_MODEL:
54abe48101SGeert Uytterhoeven apollo_model = be32_to_cpup(data);
551da177e4SLinus Torvalds break;
561da177e4SLinus Torvalds
571da177e4SLinus Torvalds default:
581da177e4SLinus Torvalds unknown=1;
591da177e4SLinus Torvalds }
601da177e4SLinus Torvalds
611da177e4SLinus Torvalds return unknown;
621da177e4SLinus Torvalds }
631da177e4SLinus Torvalds
dn_setup_model(void)64a4df02a2SGeert Uytterhoeven static void __init dn_setup_model(void)
65a4df02a2SGeert Uytterhoeven {
66ce00aa0aSFabian Frederick pr_info("Apollo hardware found: [%s]\n",
67ce00aa0aSFabian Frederick apollo_models[apollo_model - APOLLO_DN3000]);
681da177e4SLinus Torvalds
691da177e4SLinus Torvalds switch(apollo_model) {
701da177e4SLinus Torvalds case APOLLO_UNKNOWN:
711da177e4SLinus Torvalds panic("Unknown apollo model");
721da177e4SLinus Torvalds break;
731da177e4SLinus Torvalds case APOLLO_DN3000:
741da177e4SLinus Torvalds case APOLLO_DN3010:
751da177e4SLinus Torvalds sio01_physaddr=SAU8_SIO01_PHYSADDR;
761da177e4SLinus Torvalds rtc_physaddr=SAU8_RTC_PHYSADDR;
771da177e4SLinus Torvalds pica_physaddr=SAU8_PICA;
781da177e4SLinus Torvalds picb_physaddr=SAU8_PICB;
791da177e4SLinus Torvalds cpuctrl_physaddr=SAU8_CPUCTRL;
801da177e4SLinus Torvalds timer_physaddr=SAU8_TIMER;
811da177e4SLinus Torvalds break;
821da177e4SLinus Torvalds case APOLLO_DN4000:
831da177e4SLinus Torvalds sio01_physaddr=SAU7_SIO01_PHYSADDR;
841da177e4SLinus Torvalds sio23_physaddr=SAU7_SIO23_PHYSADDR;
851da177e4SLinus Torvalds rtc_physaddr=SAU7_RTC_PHYSADDR;
861da177e4SLinus Torvalds pica_physaddr=SAU7_PICA;
871da177e4SLinus Torvalds picb_physaddr=SAU7_PICB;
881da177e4SLinus Torvalds cpuctrl_physaddr=SAU7_CPUCTRL;
891da177e4SLinus Torvalds timer_physaddr=SAU7_TIMER;
901da177e4SLinus Torvalds break;
911da177e4SLinus Torvalds case APOLLO_DN4500:
921da177e4SLinus Torvalds panic("Apollo model not yet supported");
931da177e4SLinus Torvalds break;
941da177e4SLinus Torvalds case APOLLO_DN3500:
951da177e4SLinus Torvalds sio01_physaddr=SAU7_SIO01_PHYSADDR;
961da177e4SLinus Torvalds sio23_physaddr=SAU7_SIO23_PHYSADDR;
971da177e4SLinus Torvalds rtc_physaddr=SAU7_RTC_PHYSADDR;
981da177e4SLinus Torvalds pica_physaddr=SAU7_PICA;
991da177e4SLinus Torvalds picb_physaddr=SAU7_PICB;
1001da177e4SLinus Torvalds cpuctrl_physaddr=SAU7_CPUCTRL;
1011da177e4SLinus Torvalds timer_physaddr=SAU7_TIMER;
1021da177e4SLinus Torvalds break;
1031da177e4SLinus Torvalds default:
1041da177e4SLinus Torvalds panic("Undefined apollo model");
1051da177e4SLinus Torvalds break;
1061da177e4SLinus Torvalds }
1071da177e4SLinus Torvalds
1081da177e4SLinus Torvalds
1091da177e4SLinus Torvalds }
1101da177e4SLinus Torvalds
dn_serial_print(const char * str)11155775fe9SGeert Uytterhoeven static void dn_serial_print(const char *str)
1121da177e4SLinus Torvalds {
1131da177e4SLinus Torvalds while (*str) {
1141da177e4SLinus Torvalds if (*str == '\n') {
1151da177e4SLinus Torvalds sio01.rhrb_thrb = (unsigned char)'\r';
1161da177e4SLinus Torvalds while (!(sio01.srb_csrb & 0x4))
1171da177e4SLinus Torvalds ;
1181da177e4SLinus Torvalds }
1191da177e4SLinus Torvalds sio01.rhrb_thrb = (unsigned char)*str++;
1201da177e4SLinus Torvalds while (!(sio01.srb_csrb & 0x4))
1211da177e4SLinus Torvalds ;
1221da177e4SLinus Torvalds }
1231da177e4SLinus Torvalds }
1241da177e4SLinus Torvalds
config_apollo(void)12566a3f820SAl Viro void __init config_apollo(void)
12666a3f820SAl Viro {
1271da177e4SLinus Torvalds int i;
1281da177e4SLinus Torvalds
1291da177e4SLinus Torvalds dn_setup_model();
1301da177e4SLinus Torvalds
1311da177e4SLinus Torvalds mach_sched_init=dn_sched_init; /* */
1321da177e4SLinus Torvalds mach_init_IRQ=dn_init_IRQ;
1331da177e4SLinus Torvalds mach_hwclk = dn_dummy_hwclk; /* */
1341da177e4SLinus Torvalds mach_reset = dn_dummy_reset; /* */
1351da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT
1361da177e4SLinus Torvalds mach_heartbeat = dn_heartbeat;
1371da177e4SLinus Torvalds #endif
1381da177e4SLinus Torvalds mach_get_model = dn_get_model;
1391da177e4SLinus Torvalds
1401da177e4SLinus Torvalds cpuctrl=0xaa00;
1411da177e4SLinus Torvalds
1421da177e4SLinus Torvalds /* clear DMA translation table */
1431da177e4SLinus Torvalds for(i=0;i<0x400;i++)
1441da177e4SLinus Torvalds addr_xlat_map[i]=0;
1451da177e4SLinus Torvalds
1461da177e4SLinus Torvalds }
1471da177e4SLinus Torvalds
dn_timer_int(int irq,void * dev_id)1482850bc27SAl Viro irqreturn_t dn_timer_int(int irq, void *dev_id)
1490aa78106SRoman Zippel {
1507509c04aSGeert Uytterhoeven unsigned char *at = (unsigned char *)apollo_timer;
1511da177e4SLinus Torvalds
15242f1d57fSArnd Bergmann legacy_timer_tick(1);
153d6444094SArnd Bergmann timer_heartbeat();
1541da177e4SLinus Torvalds
1557509c04aSGeert Uytterhoeven READ_ONCE(*(at + 3));
1567509c04aSGeert Uytterhoeven READ_ONCE(*(at + 5));
1571da177e4SLinus Torvalds
1581da177e4SLinus Torvalds return IRQ_HANDLED;
1591da177e4SLinus Torvalds }
1601da177e4SLinus Torvalds
dn_sched_init(void)161f9a01539SArnd Bergmann void dn_sched_init(void)
1622850bc27SAl Viro {
1631da177e4SLinus Torvalds /* program timer 1 */
1641525e06eSGeert Uytterhoeven *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
1651525e06eSGeert Uytterhoeven *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
1661525e06eSGeert Uytterhoeven *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
1671525e06eSGeert Uytterhoeven *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
1681da177e4SLinus Torvalds
1691da177e4SLinus Torvalds /* enable IRQ of PIC B */
1701da177e4SLinus Torvalds *(volatile unsigned char *)(pica+1)&=(~8);
1711da177e4SLinus Torvalds
1721da177e4SLinus Torvalds #if 0
173ce00aa0aSFabian Frederick pr_info("*(0x10803) %02x\n",
174ce00aa0aSFabian Frederick *(volatile unsigned char *)(apollo_timer + 0x3));
175ce00aa0aSFabian Frederick pr_info("*(0x10803) %02x\n",
176ce00aa0aSFabian Frederick *(volatile unsigned char *)(apollo_timer + 0x3));
1771da177e4SLinus Torvalds #endif
1781da177e4SLinus Torvalds
17942f1d57fSArnd Bergmann if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL))
18084430653SGeert Uytterhoeven pr_err("Couldn't register timer interrupt\n");
1811da177e4SLinus Torvalds }
1821da177e4SLinus Torvalds
dn_dummy_hwclk(int op,struct rtc_time * t)1831da177e4SLinus Torvalds int dn_dummy_hwclk(int op, struct rtc_time *t) {
1841da177e4SLinus Torvalds
1851da177e4SLinus Torvalds
1861da177e4SLinus Torvalds if(!op) { /* read */
1871da177e4SLinus Torvalds t->tm_sec=rtc->second;
1881da177e4SLinus Torvalds t->tm_min=rtc->minute;
1891da177e4SLinus Torvalds t->tm_hour=rtc->hours;
1901da177e4SLinus Torvalds t->tm_mday=rtc->day_of_month;
1911da177e4SLinus Torvalds t->tm_wday=rtc->day_of_week;
192b65769fcSFinn Thain t->tm_mon = rtc->month - 1;
1931da177e4SLinus Torvalds t->tm_year=rtc->year;
194b65769fcSFinn Thain if (t->tm_year < 70)
195b65769fcSFinn Thain t->tm_year += 100;
1961da177e4SLinus Torvalds } else {
1971da177e4SLinus Torvalds rtc->second=t->tm_sec;
1981da177e4SLinus Torvalds rtc->minute=t->tm_min;
1991da177e4SLinus Torvalds rtc->hours=t->tm_hour;
2001da177e4SLinus Torvalds rtc->day_of_month=t->tm_mday;
2011da177e4SLinus Torvalds if(t->tm_wday!=-1)
2021da177e4SLinus Torvalds rtc->day_of_week=t->tm_wday;
203b65769fcSFinn Thain rtc->month = t->tm_mon + 1;
204b65769fcSFinn Thain rtc->year = t->tm_year % 100;
2051da177e4SLinus Torvalds }
2061da177e4SLinus Torvalds
2071da177e4SLinus Torvalds return 0;
2081da177e4SLinus Torvalds
2091da177e4SLinus Torvalds }
2101da177e4SLinus Torvalds
dn_dummy_reset(void)21155775fe9SGeert Uytterhoeven static void dn_dummy_reset(void)
21255775fe9SGeert Uytterhoeven {
2131da177e4SLinus Torvalds dn_serial_print("The end !\n");
2141da177e4SLinus Torvalds
2151da177e4SLinus Torvalds for(;;);
2161da177e4SLinus Torvalds
2171da177e4SLinus Torvalds }
2181da177e4SLinus Torvalds
dn_get_model(char * model)2191da177e4SLinus Torvalds static void dn_get_model(char *model)
2201da177e4SLinus Torvalds {
2211da177e4SLinus Torvalds strcpy(model, "Apollo ");
2221da177e4SLinus Torvalds if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
2231da177e4SLinus Torvalds strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
2241da177e4SLinus Torvalds }
2251da177e4SLinus Torvalds
2261da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT
2271da177e4SLinus Torvalds static int dn_cpuctrl=0xff00;
2281da177e4SLinus Torvalds
dn_heartbeat(int on)2291da177e4SLinus Torvalds static void dn_heartbeat(int on) {
2301da177e4SLinus Torvalds
2311da177e4SLinus Torvalds if(on) {
2321da177e4SLinus Torvalds dn_cpuctrl&=~0x100;
2331da177e4SLinus Torvalds cpuctrl=dn_cpuctrl;
2341da177e4SLinus Torvalds }
2351da177e4SLinus Torvalds else {
2361da177e4SLinus Torvalds dn_cpuctrl&=~0x100;
2371da177e4SLinus Torvalds dn_cpuctrl|=0x100;
2381da177e4SLinus Torvalds cpuctrl=dn_cpuctrl;
2391da177e4SLinus Torvalds }
2401da177e4SLinus Torvalds }
2411da177e4SLinus Torvalds #endif
2421da177e4SLinus Torvalds
243