diff options
Diffstat (limited to 'hw/sh7750.c')
-rw-r--r-- | hw/sh7750.c | 102 |
1 files changed, 6 insertions, 96 deletions
diff --git a/hw/sh7750.c b/hw/sh7750.c index dcba14e1af..9002da31af 100644 --- a/hw/sh7750.c +++ b/hw/sh7750.c @@ -64,13 +64,6 @@ typedef struct SH7750State { uint8_t scbrr2; fifo serial2_receive_fifo; fifo serial2_transmit_fifo; - /* Timers */ - uint8_t tstr; - /* Timer 0 */ - QEMUTimer *timer0; - uint16_t tcr0; - uint32_t tcor0; - uint32_t tcnt0; /* IO ports */ uint16_t gpioic; uint32_t pctra; @@ -88,83 +81,8 @@ typedef struct SH7750State { sh7750_io_device *devices[NB_DEVICES]; /* External peripherals */ /* Cache */ uint32_t ccr; -} SH7750State; - -/********************************************************************** - Timers -**********************************************************************/ - -/* XXXXX At this time, timer0 works in underflow only mode, that is - the value of tcnt0 is read at alarm computation time and cannot - be read back by the guest OS */ - -static void start_timer0(SH7750State * s) -{ - uint64_t now, next, prescaler; - - if ((s->tcr0 & 6) == 6) { - fprintf(stderr, "rtc clock for timer 0 not supported\n"); - assert(0); - } - if ((s->tcr0 & 7) == 5) { - fprintf(stderr, "timer 0 configuration not supported\n"); - assert(0); - } - - if ((s->tcr0 & 4) == 4) - prescaler = 1024; - else - prescaler = 4 << (s->tcr0 & 3); - - now = qemu_get_clock(vm_clock); - /* XXXXX */ - next = - now + muldiv64(prescaler * s->tcnt0, ticks_per_sec, - s->periph_freq); - if (next == now) - next = now + 1; - fprintf(stderr, "now=%016" PRIx64 ", next=%016" PRIx64 "\n", now, next); - fprintf(stderr, "timer will underflow in %f seconds\n", - (float) (next - now) / (float) ticks_per_sec); - - qemu_mod_timer(s->timer0, next); -} - -static void timer_start_changed(SH7750State * s) -{ - if (s->tstr & SH7750_TSTR_STR0) { - start_timer0(s); - } else { - fprintf(stderr, "timer 0 is stopped\n"); - qemu_del_timer(s->timer0); - } -} - -static void timer0_cb(void *opaque) -{ - SH7750State *s = opaque; - - s->tcnt0 = (uint32_t) 0; /* XXXXX */ - if (--s->tcnt0 == (uint32_t) - 1) { - fprintf(stderr, "timer 0 underflow\n"); - s->tcnt0 = s->tcor0; - s->tcr0 |= SH7750_TCR_UNF; - if (s->tcr0 & SH7750_TCR_UNIE) { - fprintf(stderr, - "interrupt generation for timer 0 not supported\n"); - assert(0); - } - } - start_timer0(s); -} - -static void init_timers(SH7750State * s) -{ - s->tcor0 = 0xffffffff; - s->tcnt0 = 0xffffffff; - s->timer0 = qemu_new_timer(vm_clock, &timer0_cb, s); -} +} SH7750State; /********************************************************************** First serial port @@ -581,8 +499,6 @@ static uint32_t sh7750_mem_readw(void *opaque, target_phys_addr_t addr) fprintf(stderr, "Read access to refresh count register, incrementing\n"); return s->rfcr++; - case SH7750_TCR0_A7: - return s->tcr0; case SH7750_SCLSR2_A7: /* Read and clear overflow bit */ r = s->sclsr2; @@ -649,10 +565,6 @@ static void sh7750_mem_writeb(void *opaque, target_phys_addr_t addr, case SH7750_SCBRR2_A7: s->scbrr2 = mem_value; return; - case SH7750_TSTR_A7: - s->tstr = mem_value; - timer_start_changed(s); - return; case SH7750_SCSCR1_A7: s->scscr1 = mem_value; scscr1_changed(s); @@ -721,9 +633,6 @@ static void sh7750_mem_writew(void *opaque, target_phys_addr_t addr, case SH7750_SCSMR2_A7: s->scsmr2 = mem_value; return; - case SH7750_TCR0_A7: - s->tcr0 = mem_value; - return; case SH7750_GPIOIC_A7: s->gpioic = mem_value; if (mem_value != 0) { @@ -768,9 +677,6 @@ static void sh7750_mem_writel(void *opaque, target_phys_addr_t addr, s->portpullupb = portpullup(mem_value); portb_changed(s, temp); return; - case SH7750_TCNT0_A7: - s->tcnt0 = mem_value & 0xf; - return; case SH7750_MMUCR_A7: s->cpu->mmucr = mem_value; return; @@ -828,7 +734,11 @@ SH7750State *sh7750_init(CPUSH4State * cpu) sh7750_mem_read, sh7750_mem_write, s); cpu_register_physical_memory(0x1c000000, 0x04000000, sh7750_io_memory); - init_timers(s); init_serial_ports(s); + + tmu012_init(0x1fd80000, + TMU012_FEAT_TOCR | TMU012_FEAT_3CHAN | TMU012_FEAT_EXTCLK, + s->periph_freq); + tmu012_init(0x1e100000, 0, s->periph_freq); return s; } |