| * console.c: Routines that deal with sending and receiving IO |
| * to/from the current console device using the PROM. |
| * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| * Copyright (C) 1998 Pete Zaitcev <zaitcev@yahoo.com> |
| #include <linux/kernel.h> |
| #include <asm/openprom.h> |
| #include <linux/string.h> |
| extern void restore_current(void); |
| /* Non blocking put character to console device, returns -1 if |
| static int prom_nbputchar(const char *buf) |
| spin_lock_irqsave(&prom_lock, flags); |
| if ((*(romvec->pv_nbputchar))(*buf)) |
| if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, |
| spin_unlock_irqrestore(&prom_lock, flags); |
| return i; /* Ugh, we could spin forever on unsupported proms ;( */ |
| void prom_console_write_buf(const char *buf, int len) |
| int n = prom_nbputchar(buf); |