| 1 | /* |
|---|
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
|---|
| 3 | * License. See the file "COPYING" in the main directory of this archive |
|---|
| 4 | * for more details. |
|---|
| 5 | * |
|---|
| 6 | * Copyright (C) 2001, 2002 Ralf Baechle |
|---|
| 7 | */ |
|---|
| 8 | |
|---|
| 9 | #include <asm/page.h> |
|---|
| 10 | #include <asm/setup.h> |
|---|
| 11 | #include <asm/sn/addrs.h> |
|---|
| 12 | #include <asm/sn/agent.h> |
|---|
| 13 | #include <asm/sn/klconfig.h> |
|---|
| 14 | #include <asm/sn/ioc3.h> |
|---|
| 15 | |
|---|
| 16 | #include <linux/serial.h> |
|---|
| 17 | #include <linux/serial_core.h> |
|---|
| 18 | |
|---|
| 19 | #include "ip27-common.h" |
|---|
| 20 | |
|---|
| 21 | #define IOC3_CLK (22000000 / 3) |
|---|
| 22 | #define IOC3_FLAGS (0) |
|---|
| 23 | |
|---|
| 24 | static inline struct ioc3_uartregs *console_uart(void) |
|---|
| 25 | { |
|---|
| 26 | struct ioc3 *ioc3; |
|---|
| 27 | nasid_t nasid; |
|---|
| 28 | |
|---|
| 29 | nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid; |
|---|
| 30 | ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base; |
|---|
| 31 | |
|---|
| 32 | return &ioc3->sregs.uarta; |
|---|
| 33 | } |
|---|
| 34 | |
|---|
| 35 | void prom_putchar(char c) |
|---|
| 36 | { |
|---|
| 37 | struct ioc3_uartregs *uart = console_uart(); |
|---|
| 38 | |
|---|
| 39 | while ((readb(addr: &uart->iu_lsr) & 0x20) == 0) |
|---|
| 40 | ; |
|---|
| 41 | writeb(val: c, addr: &uart->iu_thr); |
|---|
| 42 | } |
|---|
| 43 | |
|---|
