arch/m68k/sun3/prom/printf.c

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