18c2ecf20Sopenharmony_ci/* 28c2ecf20Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public 38c2ecf20Sopenharmony_ci * License. See the file "COPYING" in the main directory of this archive 48c2ecf20Sopenharmony_ci * for more details. 58c2ecf20Sopenharmony_ci * 68c2ecf20Sopenharmony_ci * Copyright (C) 2001, 2002 Ralf Baechle 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#include <asm/page.h> 108c2ecf20Sopenharmony_ci#include <asm/setup.h> 118c2ecf20Sopenharmony_ci#include <asm/sn/addrs.h> 128c2ecf20Sopenharmony_ci#include <asm/sn/agent.h> 138c2ecf20Sopenharmony_ci#include <asm/sn/klconfig.h> 148c2ecf20Sopenharmony_ci#include <asm/sn/ioc3.h> 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#include <linux/serial.h> 178c2ecf20Sopenharmony_ci#include <linux/serial_core.h> 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#include "ip27-common.h" 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#define IOC3_CLK (22000000 / 3) 228c2ecf20Sopenharmony_ci#define IOC3_FLAGS (0) 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_cistatic inline struct ioc3_uartregs *console_uart(void) 258c2ecf20Sopenharmony_ci{ 268c2ecf20Sopenharmony_ci struct ioc3 *ioc3; 278c2ecf20Sopenharmony_ci nasid_t nasid; 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid; 308c2ecf20Sopenharmony_ci ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base; 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ci return &ioc3->sregs.uarta; 338c2ecf20Sopenharmony_ci} 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_civoid prom_putchar(char c) 368c2ecf20Sopenharmony_ci{ 378c2ecf20Sopenharmony_ci struct ioc3_uartregs *uart = console_uart(); 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci while ((readb(&uart->iu_lsr) & 0x20) == 0) 408c2ecf20Sopenharmony_ci ; 418c2ecf20Sopenharmony_ci writeb(c, &uart->iu_thr); 428c2ecf20Sopenharmony_ci} 43