1 /* 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/kernel.h> 12 13 #include <asm/openprom.h> 14 #include <asm/oplib.h> 15 16 #ifdef CONFIG_KGDB 17 extern int kgdb_initialized; 18 #endif 19 20 static char ppbuf[1024]; 21 22 void 23 prom_printf(char *fmt, ...) 24 { 25 va_list args; 26 char ch, *bptr; 27 int i; 28 29 va_start(args, fmt); 30 31 #ifdef CONFIG_KGDB 32 ppbuf[0] = 'O'; 33 i = vsprintf(ppbuf + 1, fmt, args) + 1; 34 #else 35 i = vsprintf(ppbuf, fmt, args); 36 #endif 37 38 bptr = ppbuf; 39 40 #ifdef CONFIG_KGDB 41 if (kgdb_initialized) { 42 pr_info("kgdb_initialized = %d\n", kgdb_initialized); 43 putpacket(bptr, 1); 44 } else 45 #else 46 while((ch = *(bptr++)) != 0) { 47 if(ch == '\n') 48 prom_putchar('\r'); 49 50 prom_putchar(ch); 51 } 52 #endif 53 va_end(args); 54 return; 55 } 56