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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.
*/
#include <arch/early_variables.h>
#include <commonlib/helpers.h>
#include <console/console.h>
#include <console/uart.h>
#include <console/streams.h>
#include <device/pci.h>
#include <option.h>
#include <version.h>
/* Mutable console log level only allowed when RAM comes online. */
#if defined(__PRE_RAM__)
#define CONSOLE_LEVEL_CONST 1
#else
#define CONSOLE_LEVEL_CONST 0
#endif
static int console_inited CAR_GLOBAL;
static int console_loglevel = CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
static inline int get_log_level(void)
{
if (car_get_var(console_inited) == 0)
return -1;
if (CONSOLE_LEVEL_CONST)
return get_console_loglevel();
return console_loglevel;
}
static inline void set_log_level(int new_level)
{
if (CONSOLE_LEVEL_CONST)
return;
console_loglevel = new_level;
}
static void init_log_level(void)
{
int debug_level = get_console_loglevel();
if (CONSOLE_LEVEL_CONST)
return;
get_option(&debug_level, "debug_level");
set_log_level(debug_level);
}
int console_log_level(int msg_level)
{
int log_level = get_log_level();
if (log_level < 0)
return CONSOLE_LOG_NONE;
if (msg_level <= log_level)
return CONSOLE_LOG_ALL;
if (CONFIG(CONSOLE_CBMEM) && (msg_level <= BIOS_DEBUG))
return CONSOLE_LOG_FAST;
return 0;
}
asmlinkage void console_init(void)
{
init_log_level();
if (CONFIG(DEBUG_CONSOLE_INIT))
car_set_var(console_inited, 1);
if (CONFIG(EARLY_PCI_BRIDGE) && !ENV_SMM && !ENV_RAMSTAGE)
pci_early_bridge_init();
console_hw_init();
car_set_var(console_inited, 1);
printk(BIOS_NOTICE, "\n\ncoreboot-%s%s %s " ENV_STRING " starting (log level: %i)...\n",
coreboot_version, coreboot_extra_version, coreboot_build,
get_log_level());
}
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