162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * printf.c: Internal prom library printf facility. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci/* This routine is internal to the prom library, no one else should know 962306a36Sopenharmony_ci * about or use it! It's simple and smelly anyway.... 1062306a36Sopenharmony_ci */ 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/kernel.h> 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#include <asm/openprom.h> 1562306a36Sopenharmony_ci#include <asm/oplib.h> 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci#ifdef CONFIG_KGDB 1862306a36Sopenharmony_ciextern int kgdb_initialized; 1962306a36Sopenharmony_ci#endif 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_cistatic char ppbuf[1024]; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_civoid 2462306a36Sopenharmony_ciprom_printf(char *fmt, ...) 2562306a36Sopenharmony_ci{ 2662306a36Sopenharmony_ci va_list args; 2762306a36Sopenharmony_ci char ch, *bptr; 2862306a36Sopenharmony_ci int i; 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci va_start(args, fmt); 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci#ifdef CONFIG_KGDB 3362306a36Sopenharmony_ci ppbuf[0] = 'O'; 3462306a36Sopenharmony_ci i = vsprintf(ppbuf + 1, fmt, args) + 1; 3562306a36Sopenharmony_ci#else 3662306a36Sopenharmony_ci i = vsprintf(ppbuf, fmt, args); 3762306a36Sopenharmony_ci#endif 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci bptr = ppbuf; 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci#ifdef CONFIG_KGDB 4262306a36Sopenharmony_ci if (kgdb_initialized) { 4362306a36Sopenharmony_ci pr_info("kgdb_initialized = %d\n", kgdb_initialized); 4462306a36Sopenharmony_ci putpacket(bptr, 1); 4562306a36Sopenharmony_ci } else 4662306a36Sopenharmony_ci#else 4762306a36Sopenharmony_ci while((ch = *(bptr++)) != 0) { 4862306a36Sopenharmony_ci if(ch == '\n') 4962306a36Sopenharmony_ci prom_putchar('\r'); 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ci prom_putchar(ch); 5262306a36Sopenharmony_ci } 5362306a36Sopenharmony_ci#endif 5462306a36Sopenharmony_ci va_end(args); 5562306a36Sopenharmony_ci return; 5662306a36Sopenharmony_ci} 57