linux/arch/mips/sgi-ip30/ip30-console.c

24 lines
414 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <asm/sn/ioc3.h>
static inline struct ioc3_uartregs *console_uart(void)
{
struct ioc3 *ioc3;
ioc3 = (struct ioc3 *)((void *)(0x900000001f600000));
return &ioc3->sregs.uarta;
}
void prom_putchar(char c)
{
struct ioc3_uartregs *uart = console_uart();
while ((readb(&uart->iu_lsr) & 0x20) == 0)
cpu_relax();
writeb(c, &uart->iu_thr);
}