/* * arch/m68k/mvme147/config.c * * Copyright (C) 1996 Dave Frascone [chaos@mindspring.com] * Cloned from Richard Hirst [richard@sleepie.demon.co.uk] * * Based on: * * Copyright (C) 1993 Hamish Macdonald * * This file is subject to the terms and conditions of the GNU General Public * License. See the file README.legal in the main directory of this archive * for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern void mvme147_process_int (int level, struct pt_regs *regs); extern void mvme147_init_IRQ (void); extern void mvme147_free_irq (unsigned int, void *); extern int mvme147_get_irq_list (char *); extern void mvme147_enable_irq (unsigned int); extern void mvme147_disable_irq (unsigned int); static void mvme147_get_model(char *model); static int mvme147_get_hardware_list(char *buffer); extern int mvme147_request_irq (unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id); extern void mvme147_sched_init(void (*handler)(int, void *, struct pt_regs *)); extern int mvme147_keyb_init(void); extern int mvme147_kbdrate (struct kbd_repeat *); extern unsigned long mvme147_gettimeoffset (void); extern void mvme147_gettod (int *year, int *mon, int *day, int *hour, int *min, int *sec); extern int mvme147_hwclk (int, struct hwclk_time *); extern int mvme147_set_clock_mmss (unsigned long); extern void mvme147_check_partition (struct gendisk *hd, unsigned int dev); extern void mvme147_reset (void); extern void mvme147_waitbut(void); static int bcd2int (unsigned char b); /* Save tick handler routine pointer, will point to do_timer() in * kernel/sched.c, called via mvme147_process_int() */ void (*tick_handler)(int, void *, struct pt_regs *); int mvme147_parse_bootinfo(const struct bi_record *bi) { if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO) return 0; else return 1; } int mvme147_kbdrate (struct kbd_repeat *k) { return 0; } void mvme147_reset() { printk ("\r\n\nCalled mvme147_reset\r\n"); m147_pcc->watchdog = 0x0a; /* Clear timer */ m147_pcc->watchdog = 0xa5; /* Enable watchdog - 100ms to reset */ while (1) ; } static void mvme147_get_model(char *model) { sprintf(model, "Motorola MVME147"); } static int mvme147_get_hardware_list(char *buffer) { *buffer = '\0'; return 0; } void __init config_mvme147(void) { mach_max_dma_address = 0x01000000; mach_sched_init = mvme147_sched_init; mach_keyb_init = mvme147_keyb_init; mach_kbdrate = mvme147_kbdrate; mach_init_IRQ = mvme147_init_IRQ; mach_gettimeoffset = mvme147_gettimeoffset; mach_gettod = mvme147_gettod; mach_hwclk = mvme147_hwclk; mach_set_clock_mmss = mvme147_set_clock_mmss; mach_reset = mvme147_reset; mach_free_irq = mvme147_free_irq; mach_process_int = mvme147_process_int; mach_get_irq_list = mvme147_get_irq_list; mach_request_irq = mvme147_request_irq; enable_irq = mvme147_enable_irq; disable_irq = mvme147_disable_irq; mach_get_model = mvme147_get_model; mach_get_hardware_list = mvme147_get_hardware_list; /* Board type is only set by newer versions of vmelilo/tftplilo */ if (!vme_brdtype) vme_brdtype = VME_TYPE_MVME147; } /* Using pcc tick timer 1 */ static void mvme147_timer_int (int irq, void *dev_id, struct pt_regs *fp) { m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR; m147_pcc->t1_int_cntrl = PCC_INT_ENAB|PCC_LEVEL_TIMER1; tick_handler(irq, dev_id, fp); } void mvme147_sched_init (void (*timer_routine)(int, void *, struct pt_regs *)) { tick_handler = timer_routine; request_irq (PCC_IRQ_TIMER1, mvme147_timer_int, IRQ_FLG_REPLACE, "timer 1", NULL); /* Init the clock with a value */ /* our clock goes off every 6.25us */ m147_pcc->t1_preload = PCC_TIMER_PRELOAD; m147_pcc->t1_cntrl = 0x0; /* clear timer */ m147_pcc->t1_cntrl = 0x3; /* start timer */ m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR; /* clear pending ints */ m147_pcc->t1_int_cntrl = PCC_INT_ENAB|PCC_LEVEL_TIMER1; } /* This is always executed with interrupts disabled. */ /* XXX There are race hazards in this code XXX */ unsigned long mvme147_gettimeoffset (void) { volatile unsigned short *cp = (volatile unsigned short *)0xfffe1012; unsigned short n; n = *cp; while (n != *cp) n = *cp; n -= PCC_TIMER_PRELOAD; return (unsigned long)n * 25 / 4; } extern void mvme147_gettod (int *year, int *mon, int *day, int *hour, int *min, int *sec) { m147_rtc->ctrl = RTC_READ; *year = bcd2int (m147_rtc->bcd_year); *mon = bcd2int (m147_rtc->bcd_mth); *day = bcd2int (m147_rtc->bcd_dom); *hour = bcd2int (m147_rtc->bcd_hr); *min = bcd2int (m147_rtc->bcd_min); *sec = bcd2int (m147_rtc->bcd_sec); m147_rtc->ctrl = 0; } static int bcd2int (unsigned char b) { return ((b>>4)*10 + (b&15)); } int mvme147_hwclk(int op, struct hwclk_time *t) { return 0; } int mvme147_set_clock_mmss (unsigned long nowtime) { return 0; } int mvme147_keyb_init (void) { return 0; } /*------------------- Serial console stuff ------------------------*/ static void scc_delay (void) { int n; volatile int trash; for (n = 0; n < 20; n++) trash = n; } static void scc_write (char ch) { volatile char *p = (volatile char *)M147_SCC_A_ADDR; do { scc_delay(); } while (!(*p & 4)); scc_delay(); *p = 8; scc_delay(); *p = ch; } void m147_scc_write (struct console *co, const char *str, unsigned count) { unsigned long flags; save_flags(flags); cli(); while (count--) { if (*str == '\n') scc_write ('\r'); scc_write (*str++); } restore_flags(flags); } static int m147_scc_wait_key (struct console *co) { volatile unsigned char *p = (volatile char *)M147_SCC_A_ADDR; unsigned long flags; int c; /* wait for rx buf filled */ while ((*p & 0x01) == 0) ; save_flags(flags); cli(); *p = 8; scc_delay(); c = *p; restore_flags(flags); return c; } void mvme147_init_console_port (struct console *co, int cflag) { co->write = m147_scc_write; co->wait_key = m147_scc_wait_key; }