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/*
* Copyright (c) 2025 Ian Marco Moffett and L5 engineers
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <machine/uart.h> /* shared */
#include <sys/syslog.h>
#include <io/cons/cons.h>
#include <os/spinlock.h>
#include <string.h>
#include <stdarg.h>
/*
* If this value is true, data will be written to
* the video console, otherwise only serial logging
* will be used.
*/
static bool cons_enabled = false;
static void
syslog_write(const char *str, size_t len)
{
static struct spinlock lock = {0};
spinlock_acquire(&lock);
for (int i = 0; i < len; ++i) {
if (cons_enabled)
cons_putstr(&g_root_scr, str, 1);
uart_write(*str++);
}
spinlock_release(&lock);
}
void
vprintf(const char *fmt, va_list *ap)
{
char buffer[1024] = {0};
vsnprintf(buffer, sizeof(buffer), fmt, *ap);
syslog_write(buffer, strlen(buffer));
}
void
printf(const char *fmt, ...)
{
static va_list ap;
va_start(ap, fmt);
vprintf(fmt, &ap);
va_end(ap);
}
void
syslog_toggle(bool enable)
{
cons_enabled = enable;
}
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