arc_con.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * Wrap-around code for a console using the
- * ARC io-routines.
- *
- * Copyright (c) 1998 Harald Koerfgen
- * Copyright (c) 2001 Ralf Baechle
- */
- #include <linux/tty.h>
- #include <linux/major.h>
- #include <linux/ptrace.h>
- #include <linux/init.h>
- #include <linux/console.h>
- #include <linux/fs.h>
- #include <asm/sgialib.h>
- extern void prom_printf (char *, ...);
- void prom_putchar(char c)
- {
- ULONG cnt;
- CHAR it = c;
- ArcWrite(1, &it, 1, &cnt);
- }
- static void prom_console_write(struct console *co, const char *s,
- unsigned count)
- {
- unsigned i;
- /*
- * Now, do each character
- */
- for (i = 0; i < count; i++) {
- if (*s == 10)
- prom_printf("%c", 13);
- prom_printf("%c", *s++);
- }
- }
- static int prom_console_wait_key(struct console *co)
- {
- return 0;
- }
- static int __init prom_console_setup(struct console *co, char *options)
- {
- return 0;
- }
- static kdev_t prom_console_device(struct console *c)
- {
- return MKDEV(TTY_MAJOR, 64 + c->index);
- }
- static struct console arc_cons = {
- "ttyS",
- prom_console_write,
- NULL,
- prom_console_device,
- prom_console_wait_key,
- NULL,
- prom_console_setup,
- CON_PRINTBUFFER,
- -1,
- 0,
- NULL
- };
- /*
- * Register console.
- */
- void __init arc_console_init(void)
- {
- register_console(&arc_cons);
- }