diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/m68k/apollo/config.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c new file mode 100644 index 000000000..42a8b8e2b --- /dev/null +++ b/arch/m68k/apollo/config.c @@ -0,0 +1,269 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/init.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/console.h> +#include <linux/rtc.h> +#include <linux/vt_kern.h> +#include <linux/interrupt.h> + +#include <asm/setup.h> +#include <asm/bootinfo.h> +#include <asm/bootinfo-apollo.h> +#include <asm/byteorder.h> +#include <asm/apollohw.h> +#include <asm/irq.h> +#include <asm/machdep.h> +#include <asm/config.h> + +u_long sio01_physaddr; +u_long sio23_physaddr; +u_long rtc_physaddr; +u_long pica_physaddr; +u_long picb_physaddr; +u_long cpuctrl_physaddr; +u_long timer_physaddr; +u_long apollo_model; + +extern void dn_sched_init(void); +extern void dn_init_IRQ(void); +extern int dn_dummy_hwclk(int, struct rtc_time *); +extern void dn_dummy_reset(void); +#ifdef CONFIG_HEARTBEAT +static void dn_heartbeat(int on); +#endif +static irqreturn_t dn_timer_int(int irq,void *); +static void dn_get_model(char *model); +static const char *apollo_models[] = { + [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)", + [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)", + [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)", + [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)", + [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)" +}; + +int __init apollo_parse_bootinfo(const struct bi_record *record) +{ + int unknown = 0; + const void *data = record->data; + + switch (be16_to_cpu(record->tag)) { + case BI_APOLLO_MODEL: + apollo_model = be32_to_cpup(data); + break; + + default: + unknown=1; + } + + return unknown; +} + +static void __init dn_setup_model(void) +{ + pr_info("Apollo hardware found: [%s]\n", + apollo_models[apollo_model - APOLLO_DN3000]); + + switch(apollo_model) { + case APOLLO_UNKNOWN: + panic("Unknown apollo model"); + break; + case APOLLO_DN3000: + case APOLLO_DN3010: + sio01_physaddr=SAU8_SIO01_PHYSADDR; + rtc_physaddr=SAU8_RTC_PHYSADDR; + pica_physaddr=SAU8_PICA; + picb_physaddr=SAU8_PICB; + cpuctrl_physaddr=SAU8_CPUCTRL; + timer_physaddr=SAU8_TIMER; + break; + case APOLLO_DN4000: + sio01_physaddr=SAU7_SIO01_PHYSADDR; + sio23_physaddr=SAU7_SIO23_PHYSADDR; + rtc_physaddr=SAU7_RTC_PHYSADDR; + pica_physaddr=SAU7_PICA; + picb_physaddr=SAU7_PICB; + cpuctrl_physaddr=SAU7_CPUCTRL; + timer_physaddr=SAU7_TIMER; + break; + case APOLLO_DN4500: + panic("Apollo model not yet supported"); + break; + case APOLLO_DN3500: + sio01_physaddr=SAU7_SIO01_PHYSADDR; + sio23_physaddr=SAU7_SIO23_PHYSADDR; + rtc_physaddr=SAU7_RTC_PHYSADDR; + pica_physaddr=SAU7_PICA; + picb_physaddr=SAU7_PICB; + cpuctrl_physaddr=SAU7_CPUCTRL; + timer_physaddr=SAU7_TIMER; + break; + default: + panic("Undefined apollo model"); + break; + } + + +} + +int dn_serial_console_wait_key(struct console *co) { + + while(!(sio01.srb_csrb & 1)) + barrier(); + return sio01.rhrb_thrb; +} + +void dn_serial_console_write (struct console *co, const char *str,unsigned int count) +{ + while(count--) { + if (*str == '\n') { + sio01.rhrb_thrb = (unsigned char)'\r'; + while (!(sio01.srb_csrb & 0x4)) + ; + } + sio01.rhrb_thrb = (unsigned char)*str++; + while (!(sio01.srb_csrb & 0x4)) + ; + } +} + +void dn_serial_print (const char *str) +{ + while (*str) { + if (*str == '\n') { + sio01.rhrb_thrb = (unsigned char)'\r'; + while (!(sio01.srb_csrb & 0x4)) + ; + } + sio01.rhrb_thrb = (unsigned char)*str++; + while (!(sio01.srb_csrb & 0x4)) + ; + } +} + +void __init config_apollo(void) +{ + int i; + + dn_setup_model(); + + mach_sched_init=dn_sched_init; /* */ + mach_init_IRQ=dn_init_IRQ; + mach_hwclk = dn_dummy_hwclk; /* */ + mach_reset = dn_dummy_reset; /* */ +#ifdef CONFIG_HEARTBEAT + mach_heartbeat = dn_heartbeat; +#endif + mach_get_model = dn_get_model; + + cpuctrl=0xaa00; + + /* clear DMA translation table */ + for(i=0;i<0x400;i++) + addr_xlat_map[i]=0; + +} + +irqreturn_t dn_timer_int(int irq, void *dev_id) +{ + volatile unsigned char x; + + legacy_timer_tick(1); + timer_heartbeat(); + + x = *(volatile unsigned char *)(apollo_timer + 3); + x = *(volatile unsigned char *)(apollo_timer + 5); + + return IRQ_HANDLED; +} + +void dn_sched_init(void) +{ + /* program timer 1 */ + *(volatile unsigned char *)(apollo_timer + 3) = 0x01; + *(volatile unsigned char *)(apollo_timer + 1) = 0x40; + *(volatile unsigned char *)(apollo_timer + 5) = 0x09; + *(volatile unsigned char *)(apollo_timer + 7) = 0xc4; + + /* enable IRQ of PIC B */ + *(volatile unsigned char *)(pica+1)&=(~8); + +#if 0 + pr_info("*(0x10803) %02x\n", + *(volatile unsigned char *)(apollo_timer + 0x3)); + pr_info("*(0x10803) %02x\n", + *(volatile unsigned char *)(apollo_timer + 0x3)); +#endif + + if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL)) + pr_err("Couldn't register timer interrupt\n"); +} + +int dn_dummy_hwclk(int op, struct rtc_time *t) { + + + if(!op) { /* read */ + t->tm_sec=rtc->second; + t->tm_min=rtc->minute; + t->tm_hour=rtc->hours; + t->tm_mday=rtc->day_of_month; + t->tm_wday=rtc->day_of_week; + t->tm_mon = rtc->month - 1; + t->tm_year=rtc->year; + if (t->tm_year < 70) + t->tm_year += 100; + } else { + rtc->second=t->tm_sec; + rtc->minute=t->tm_min; + rtc->hours=t->tm_hour; + rtc->day_of_month=t->tm_mday; + if(t->tm_wday!=-1) + rtc->day_of_week=t->tm_wday; + rtc->month = t->tm_mon + 1; + rtc->year = t->tm_year % 100; + } + + return 0; + +} + +void dn_dummy_reset(void) { + + dn_serial_print("The end !\n"); + + for(;;); + +} + +void dn_dummy_waitbut(void) { + + dn_serial_print("waitbut\n"); + +} + +static void dn_get_model(char *model) +{ + strcpy(model, "Apollo "); + if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500) + strcat(model, apollo_models[apollo_model - APOLLO_DN3000]); +} + +#ifdef CONFIG_HEARTBEAT +static int dn_cpuctrl=0xff00; + +static void dn_heartbeat(int on) { + + if(on) { + dn_cpuctrl&=~0x100; + cpuctrl=dn_cpuctrl; + } + else { + dn_cpuctrl&=~0x100; + dn_cpuctrl|=0x100; + cpuctrl=dn_cpuctrl; + } +} +#endif + |