LXR linux/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
  18extern int kgdb_initialized;
  19#endif
  20
  21static char ppbuf[1024];
  22
  23void
  24prom_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}
  57