/* * This file is part of the coreboot project. * * Copyright (C) 1991, 1992 Linus Torvalds * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, * Raptor Engineering * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * blatantly copied from linux/kernel/printk.c */ #include <console/console.h> #include <console/streams.h> #include <console/vtxprintf.h> #include <smp/spinlock.h> #include <smp/node.h> #include <stddef.h> #include <trace.h> #if (!defined(__PRE_RAM__) && IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)) || !IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) DECLARE_SPIN_LOCK(console_lock) #endif void do_putchar(unsigned char byte) { console_tx_byte(byte); } static void wrap_putchar(unsigned char byte, void *data) { do_putchar(byte); } int do_printk(int msg_level, const char *fmt, ...) { va_list args; int i; if (IS_ENABLED(CONFIG_SQUELCH_EARLY_SMP) && ENV_CACHE_AS_RAM && !boot_cpu()) return 0; if (!console_log_level(msg_level)) return 0; DISABLE_TRACE; #ifdef __PRE_RAM__ #if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) spin_lock(romstage_console_lock()); #endif #else spin_lock(&console_lock); #endif va_start(args, fmt); i = vtxprintf(wrap_putchar, fmt, args, NULL); va_end(args); console_tx_flush(); #ifdef __PRE_RAM__ #if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) spin_unlock(romstage_console_lock()); #endif #else spin_unlock(&console_lock); #endif ENABLE_TRACE; return i; } #if IS_ENABLED(CONFIG_VBOOT) void do_printk_va_list(int msg_level, const char *fmt, va_list args) { if (!console_log_level(msg_level)) return; vtxprintf(wrap_putchar, fmt, args, NULL); console_tx_flush(); } #endif /* CONFIG_VBOOT */