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8250: Customized base baudrate

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(Jan Kiszka)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4336 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-05-04 21:42:11 +00:00
parent 6936bfe514
commit b6cd0ea120
14 changed files with 36 additions and 25 deletions
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14
hw/serial.c
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@ -99,6 +99,7 @@ struct SerialState {
int last_break_enable;
target_phys_addr_t base;
int it_shift;
int baudbase;
QEMUTimer *tx_timer;
int tx_burst;
};
@ -135,7 +136,7 @@ static void serial_tx_done(void *opaque)
/* We assume 10 bits/char, OK for this purpose. */
s->tx_burst = THROTTLE_TX_INTERVAL * 1000 /
(1000000 * 10 / (115200 / divider));
(1000000 * 10 / (s->baudbase / divider));
}
s->thr_ipending = 1;
s->lsr |= UART_LSR_THRE;
@ -163,7 +164,7 @@ static void serial_update_parameters(SerialState *s)
data_bits = (s->lcr & 0x03) + 5;
if (s->divider == 0)
return;
speed = 115200 / s->divider;
speed = s->baudbase / s->divider;
ssp.speed = speed;
ssp.parity = parity;
ssp.data_bits = data_bits;
@ -413,7 +414,8 @@ static void serial_reset(void *opaque)
}
/* If fd is zero, it means that the serial device uses the console */
SerialState *serial_init(int base, qemu_irq irq, CharDriverState *chr)
SerialState *serial_init(int base, qemu_irq irq, int baudbase,
CharDriverState *chr)
{
SerialState *s;
@ -421,6 +423,7 @@ SerialState *serial_init(int base, qemu_irq irq, CharDriverState *chr)
if (!s)
return NULL;
s->irq = irq;
s->baudbase = baudbase;
s->tx_timer = qemu_new_timer(vm_clock, serial_tx_done, s);
if (!s->tx_timer)
@ -512,8 +515,8 @@ static CPUWriteMemoryFunc *serial_mm_write[] = {
};
SerialState *serial_mm_init (target_phys_addr_t base, int it_shift,
qemu_irq irq, CharDriverState *chr,
int ioregister)
qemu_irq irq, int baudbase,
CharDriverState *chr, int ioregister)
{
SerialState *s;
int s_io_memory;
@ -524,6 +527,7 @@ SerialState *serial_mm_init (target_phys_addr_t base, int it_shift,
s->irq = irq;
s->base = base;
s->it_shift = it_shift;
s->baudbase= baudbase;
s->tx_timer = qemu_new_timer(vm_clock, serial_tx_done, s);
if (!s->tx_timer)