diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/char/escc.c | 38 | ||||
| -rw-r--r-- | hw/char/trace-events | 1 |
2 files changed, 38 insertions, 1 deletions
diff --git a/hw/char/escc.c b/hw/char/escc.c index 697f15f..806f593 100644 --- a/hw/char/escc.c +++ b/hw/char/escc.c @@ -331,6 +331,40 @@ static void escc_soft_reset_chn(ESCCChannelState *s) clear_queue(s); } +static void escc_hard_reset_chn(ESCCChannelState *s) +{ + int i; + + s->reg = 0; + for (i = 0; i < ESCC_SERIAL_REGS; i++) { + s->rregs[i] = 0; + s->wregs[i] = 0; + } + /* 1X divisor, 1 stop bit, no parity */ + s->wregs[W_TXCTRL1] = TXCTRL1_1STOP; + s->wregs[W_MINTR] = MINTR_RST_ALL; + /* Synch mode tx clock = TRxC */ + s->wregs[W_CLOCK] = CLOCK_TRXC; + /* PLL disabled */ + s->wregs[W_MISC2] = MISC2_PLLDIS; + /* Enable most interrupts */ + s->wregs[W_EXTINT] = EXTINT_DCD | EXTINT_SYNCINT | EXTINT_CTSINT | + EXTINT_TXUNDRN | EXTINT_BRKINT; + if (s->disabled) { + s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_DCD | STATUS_SYNC | + STATUS_CTS | STATUS_TXUNDRN; + } else { + s->rregs[R_STATUS] = STATUS_TXEMPTY | STATUS_TXUNDRN; + } + s->rregs[R_SPEC] = SPEC_BITS8 | SPEC_ALLSENT; + + s->rx = s->tx = 0; + s->rxint = s->txint = 0; + s->rxint_under_svc = s->txint_under_svc = 0; + s->e0_mode = s->led_mode = s->caps_lock_mode = s->num_lock_mode = 0; + clear_queue(s); +} + static void escc_reset(DeviceState *d) { ESCCState *s = ESCC(d); @@ -589,7 +623,9 @@ static void escc_mem_write(void *opaque, hwaddr addr, escc_soft_reset_chn(&serial->chn[1]); return; case MINTR_RST_ALL: - escc_reset(DEVICE(serial)); + trace_escc_hard_reset(); + escc_hard_reset_chn(&serial->chn[0]); + escc_hard_reset_chn(&serial->chn[1]); return; } break; diff --git a/hw/char/trace-events b/hw/char/trace-events index 073f98e..b774832 100644 --- a/hw/char/trace-events +++ b/hw/char/trace-events @@ -36,6 +36,7 @@ grlib_apbuart_writel_unknown(uint64_t addr, uint32_t value) "addr 0x%"PRIx64" va grlib_apbuart_readl_unknown(uint64_t addr) "addr 0x%"PRIx64 # escc.c +escc_hard_reset(void) "hard reset" escc_soft_reset_chn(char channel) "soft reset channel %c" escc_put_queue(char channel, int b) "channel %c put: 0x%02x" escc_get_queue(char channel, int val) "channel %c get 0x%02x" |