void pre_init(void) {
morecore_area = core_buf;
morecore_size = SERVER_CORE_SIZE;
serial_lock();
// Initialize the serial port
set_dlab(0); // we always assume the dlab is 0 unless we explicitly change it
disable_interrupt();
disable_fifo();
reset_lcr();
reset_mcr();
clear_iir();
set_baud_rate(BAUD_RATE);
reset_state();
enable_fifo();
enable_interrupt();
clear_iir();
// all done
init_colours();
/* query what getchar clients exist */
num_getchar_clients = getchar_num_badges();
getchar_clients = calloc(num_getchar_clients, sizeof(getchar_client_t));
for (int i = 0; i < num_getchar_clients; i++) {
unsigned int badge = getchar_enumerate_badge(i);
assert(badge <= num_getchar_clients);
getchar_clients[badge].client_id = badge;
getchar_clients[badge].buf = getchar_buf(badge);
getchar_clients[badge].last_head = -1;
}
set_putchar(serial_putchar);
serial_irq_reg_callback(serial_irq, 0);
/* Start regular heartbeat of 500ms */
timeout_periodic(0, 500000000);
serial_unlock();
}
serial::err
serial_port_x86::open(void)
{
disable_interrupt_mode();
set_baud_rate(m_baud);
set_parity_mode(m_parity);
set_data_size(m_data_size);
set_stop_bits(m_stop_bits);
enable_fifo();
enable_interrupt_mode(m_interrupt_mode);
return serial::success;
}
void serial_init(gdb_state_t *gdb) {
// Initialize the serial port
int UNUSED error;
error = serial_lock();
gdb_state = gdb;
set_dlab(0); // we always assume the dlab is 0 unless we explicitly change it
disable_interrupt();
disable_fifo();
reset_lcr();
reset_mcr();
clear_iir();
set_baud_rate(BAUD_RATE);
reset_state();
enable_fifo();
enable_interrupt();
clear_iir();
initialise_buffer();
error = serial_unlock();
}
struct port *__libnet_internal__serial_open(int portnum)
{
struct port *p;
int uart, baudrate, cfg;
if ((portnum < 0) || (portnum >= MAX_PORT))
return NULL;
p = port_table[portnum];
memset(p, 0, sizeof *p);
if (config[portnum].baseaddr == -1) {
dosmemget(0x400 + portnum * 2, 2, &p->baseaddr);
if (p->baseaddr == 0)
p->baseaddr = fallback_baseaddr[portnum];
}
else {
p->baseaddr = config[portnum].baseaddr;
}
uart = detect_uart(p->baseaddr);
if (!uart)
return NULL;
if (uart == UART_16550A)
enable_fifo(p);
else
disable_fifo(p);
install_isr(portnum, p, config[portnum].irq);
set_config(p->baseaddr, config[portnum].baudrate,
(config[portnum].bits
| config[portnum].parity
| config[portnum].stopbits));
return p;
}
