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/*
* This file is part of the coreboot project.
*
* 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/cbmem_console.h>
#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>
#include <timer.h>
DECLARE_SPIN_LOCK(console_lock)
#define TRACK_CONSOLE_TIME (CONFIG(HAVE_MONOTONIC_TIMER) && \
(ENV_RAMSTAGE || !CONFIG(CAR_GLOBAL_MIGRATION)))
static struct mono_time mt_start, mt_stop;
static long console_usecs;
static void console_time_run(void)
{
if (TRACK_CONSOLE_TIME)
timer_monotonic_get(&mt_start);
}
static void console_time_stop(void)
{
if (TRACK_CONSOLE_TIME) {
timer_monotonic_get(&mt_stop);
console_usecs += mono_time_diff_microseconds(&mt_start, &mt_stop);
}
}
void console_time_report(void)
{
if (!TRACK_CONSOLE_TIME)
return;
printk(BIOS_DEBUG, "Accumulated console time in " ENV_STRING " %ld ms\n",
DIV_ROUND_CLOSEST(console_usecs, USECS_PER_MSEC));
}
long console_time_get_and_reset(void)
{
if (!TRACK_CONSOLE_TIME)
return 0;
long elapsed = console_usecs;
console_usecs = 0;
return elapsed;
}
void do_putchar(unsigned char byte)
{
console_time_run();
console_tx_byte(byte);
console_time_stop();
}
static void wrap_putchar(unsigned char byte, void *data)
{
console_tx_byte(byte);
}
static void wrap_putchar_cbmemc(unsigned char byte, void *data)
{
__cbmemc_tx_byte(byte);
}
int do_vprintk(int msg_level, const char *fmt, va_list args)
{
int i, log_this;
if (CONFIG(SQUELCH_EARLY_SMP) && ENV_ROMSTAGE_OR_BEFORE && !boot_cpu())
return 0;
log_this = console_log_level(msg_level);
if (log_this < CONSOLE_LOG_FAST)
return 0;
DISABLE_TRACE;
spin_lock(&console_lock);
console_time_run();
if (log_this == CONSOLE_LOG_FAST) {
i = vtxprintf(wrap_putchar_cbmemc, fmt, args, NULL);
} else {
i = vtxprintf(wrap_putchar, fmt, args, NULL);
console_tx_flush();
}
console_time_stop();
spin_unlock(&console_lock);
ENABLE_TRACE;
return i;
}
int do_printk(int msg_level, const char *fmt, ...)
{
va_list args;
int i;
va_start(args, fmt);
i = do_vprintk(msg_level, fmt, args);
va_end(args);
return i;
}
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