ip27-console.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 Ralf Baechle
- */
- #include <linux/init.h>
- #include <linux/console.h>
- #include <linux/kdev_t.h>
- #include <linux/major.h>
- #include <asm/sn/addrs.h>
- #include <asm/sn/sn0/hub.h>
- #include <asm/sn/klconfig.h>
- #include <asm/sn/ioc3.h>
- #include <asm/sn/sn_private.h>
- void prom_putchar(char c)
- {
- struct ioc3 *ioc3;
- struct ioc3_uartregs *uart;
- ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(master_nasid)->memory_base;
- uart = &ioc3->sregs.uarta;
- while ((uart->iu_lsr & 0x20) == 0);
- uart->iu_thr = c;
- }
- char __init prom_getchar(void)
- {
- return 0;
- }
- static void
- ip27prom_console_write(struct console *con, const char *s, unsigned n)
- {
- prom_printf("%s", s);
- }
- static kdev_t
- ip27prom_console_dev(struct console *c)
- {
- return MKDEV(TTY_MAJOR, 64 + c->index);
- }
- static struct console ip27_prom_console = {
- name: "prom",
- write: ip27prom_console_write,
- device: ip27prom_console_dev,
- flags: CON_PRINTBUFFER,
- index: -1,
- };
- __init void ip27_setup_console(void)
- {
- register_console(&ip27_prom_console);
- }