1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * printf.c: Internal prom library printf facility.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /* This routine is internal to the prom library, no one else should know
9*4882a593Smuzhiyun * about or use it! It's simple and smelly anyway....
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <asm/openprom.h>
15*4882a593Smuzhiyun #include <asm/oplib.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #ifdef CONFIG_KGDB
18*4882a593Smuzhiyun extern int kgdb_initialized;
19*4882a593Smuzhiyun #endif
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun static char ppbuf[1024];
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun void
prom_printf(char * fmt,...)24*4882a593Smuzhiyun prom_printf(char *fmt, ...)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun va_list args;
27*4882a593Smuzhiyun char ch, *bptr;
28*4882a593Smuzhiyun int i;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun va_start(args, fmt);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun #ifdef CONFIG_KGDB
33*4882a593Smuzhiyun ppbuf[0] = 'O';
34*4882a593Smuzhiyun i = vsprintf(ppbuf + 1, fmt, args) + 1;
35*4882a593Smuzhiyun #else
36*4882a593Smuzhiyun i = vsprintf(ppbuf, fmt, args);
37*4882a593Smuzhiyun #endif
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun bptr = ppbuf;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #ifdef CONFIG_KGDB
42*4882a593Smuzhiyun if (kgdb_initialized) {
43*4882a593Smuzhiyun pr_info("kgdb_initialized = %d\n", kgdb_initialized);
44*4882a593Smuzhiyun putpacket(bptr, 1);
45*4882a593Smuzhiyun } else
46*4882a593Smuzhiyun #else
47*4882a593Smuzhiyun while((ch = *(bptr++)) != 0) {
48*4882a593Smuzhiyun if(ch == '\n')
49*4882a593Smuzhiyun prom_putchar('\r');
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun prom_putchar(ch);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun #endif
54*4882a593Smuzhiyun va_end(args);
55*4882a593Smuzhiyun return;
56*4882a593Smuzhiyun }
57