1 /* $Id: printf.c,v 1.5 1996/04/04 16:31:07 tridge Exp $ 2 * printf.c: Internal prom library printf facility. 3 * 4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 5 */ 6 7 /* This routine is internal to the prom library, no one else should know 8 * about or use it! It's simple and smelly anyway.... 9 */ 10 11 #include <linux/config.h> 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_AP1000 42 ap_write(1,bptr,strlen(bptr)); 43 #else 44 45 #ifdef CONFIG_KGDB 46 if (kgdb_initialized) { 47 printk("kgdb_initialized = %d\n", kgdb_initialized); 48 putpacket(bptr, 1); 49 } else 50 #else 51 while((ch = *(bptr++)) != 0) { 52 if(ch == '\n') 53 prom_putchar('\r'); 54 55 prom_putchar(ch); 56 } 57 #endif 58 #endif 59 va_end(args); 60 return; 61 } 62