int __init setup_early_serial8250_console(char *cmdline)
{
char *options;
int err;
options = strstr(cmdline, "uart8250,");
if (!options) {
options = strstr(cmdline, "uart,");
if (!options)
return 0;
}
options = strchr(cmdline, ',') + 1;
err = early_serial8250_setup(options);
if (err < 0)
return err;
register_console(&early_serial8250_console);
#ifdef CONFIG_KDB
/*
* Remember the line number of the first serial
* console. We'll make this the kdb serial console too.
*/
if (kdb_serial_line == -1) {
kdb_serial_line = early_serial8250_console.index;
kdb_serial.io_type = early_device.port.iotype;
switch (early_device.port.iotype) {
case SERIAL_IO_MEM:
#ifdef SERIAL_IO_MEM32
case SERIAL_IO_MEM32:
#endif
kdb_serial.iobase = (unsigned long)(early_device.port.membase);
kdb_serial.ioreg_shift = early_device.port.regshift;
break;
default:
kdb_serial.iobase = early_device.port.iobase;
kdb_serial.ioreg_shift = 0;
break;
}
}
#endif /* CONFIG_KDB */
return 0;
}
static int __init uniphier_early_console_setup(struct earlycon_device *device,
const char *options)
{
if (!device->port.membase)
return -ENODEV;
/* This hardware always expects MMIO32 register interface. */
device->port.iotype = UPIO_MEM32;
device->port.regshift = 2;
/*
* Do not touch the divisor register in early_serial8250_setup();
* we assume it has been initialized by a boot loader.
*/
device->baud = 0;
return early_serial8250_setup(device, options);
}
int __init setup_early_serial8250_console(char *cmdline)
{
char *options;
int err;
options = strstr(cmdline, "uart8250,");
if (!options) {
options = strstr(cmdline, "uart,");
if (!options)
return 0;
}
options = strchr(cmdline, ',') + 1;
if ((err = early_serial8250_setup(options)) < 0)
return err;
register_console(&early_serial8250_console);
return 0;
}
