47 lines
991 B
C
47 lines
991 B
C
/*
|
|
* printf.c: Internal prom library printf facility.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
|
|
*
|
|
* We used to warn all over the code: DO NOT USE prom_printf(),
|
|
* and yet people do. Anton's banking code was outputing banks
|
|
* with prom_printf for most of the 2.4 lifetime. Since an effective
|
|
* stick is not available, we deployed a carrot: an early printk
|
|
* through PROM by means of -p boot option. This ought to fix it.
|
|
* USE printk; if you need, deploy -p.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <asm/openprom.h>
|
|
#include <asm/oplib.h>
|
|
|
|
static char ppbuf[1024];
|
|
|
|
void
|
|
prom_write(const char *buf, unsigned int n)
|
|
{
|
|
char ch;
|
|
|
|
while (n != 0) {
|
|
--n;
|
|
if ((ch = *buf++) == '\n')
|
|
prom_putchar('\r');
|
|
prom_putchar(ch);
|
|
}
|
|
}
|
|
|
|
void
|
|
prom_printf(char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int i;
|
|
|
|
va_start(args, fmt);
|
|
i = vscnprintf(ppbuf, sizeof(ppbuf), fmt, args);
|
|
va_end(args);
|
|
|
|
prom_write(ppbuf, i);
|
|
}
|