60320182d0
The console subsystem allows printk() to be called prior to the drivers and/or infrastructure is completely set up. In those situations don't allow messages to be added until the console is completely initialized. BUG=b:73898539 Change-Id: Idc3840132d7f95f8e22045d7484c528d828bb0de Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/24917 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2003 Eric Biederman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/early_variables.h>
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#include <console/console.h>
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#include <console/uart.h>
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#include <console/streams.h>
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#include <device/pci.h>
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#include <option.h>
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#include <rules.h>
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#include <version.h>
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/* Mutable console log level only allowed when RAM comes online. */
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#if defined(__PRE_RAM__)
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#define CONSOLE_LEVEL_CONST 1
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#else
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#define CONSOLE_LEVEL_CONST 0
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#endif
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static int console_inited CAR_GLOBAL;
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static int console_loglevel = CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
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static inline int get_log_level(void)
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{
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if (car_get_var(console_inited) == 0)
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return -1;
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if (CONSOLE_LEVEL_CONST)
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return get_console_loglevel();
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return console_loglevel;
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}
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static inline void set_log_level(int new_level)
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{
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if (CONSOLE_LEVEL_CONST)
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return;
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console_loglevel = new_level;
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}
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static void init_log_level(void)
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{
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int debug_level = get_console_loglevel();
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if (CONSOLE_LEVEL_CONST)
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return;
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get_option(&debug_level, "debug_level");
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set_log_level(debug_level);
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}
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int console_log_level(int msg_level)
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{
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return (get_log_level() >= msg_level);
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}
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asmlinkage void console_init(void)
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{
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init_log_level();
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#if IS_ENABLED(CONFIG_EARLY_PCI_BRIDGE) && !defined(__SMM__)
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pci_early_bridge_init();
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#endif
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console_hw_init();
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car_set_var(console_inited, 1);
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printk(BIOS_NOTICE, "\n\ncoreboot-%s%s %s " ENV_STRING " starting...\n",
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coreboot_version, coreboot_extra_version, coreboot_build);
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}
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