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/*
* 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 (!console_log_level(msg_level))
return 0;
#if IS_ENABLED (CONFIG_SQUELCH_EARLY_SMP) && defined(__PRE_RAM__)
if (!boot_cpu())
return 0;
#endif
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 */
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