53119fdeab
It might be that you want an early console in romstage before RAM is up, but you can't or don't want to support the console all the way back in the bootblock. By making the console in those two different environments configurable seperately that becomes possible. On the 5250 console output as early as the bootblock works, but on the 5420 it only starts working in the ROM stage after clocks have been initialized. BUG=chrome-os-partner:19420 TEST=Built and booted on pit with another change and an external tool, and was able to get serial output. Built for snow. BRANCH=None Change-Id: Ie27ae7a7b22f336d23893618969efde4145fefd7 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/57725 Reviewed-by: Stefan Reinauer <reinauer@google.com> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright (C) 2003 Eric Biederman
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <console/console.h>
|
|
#include <build.h>
|
|
#include <arch/hlt.h>
|
|
#include <arch/io.h>
|
|
|
|
#ifndef __PRE_RAM__
|
|
#include <string.h>
|
|
|
|
/*
|
|
* FIXME: get_option() needs to be abstracted better so that other non-volatile
|
|
* storage can be used. This will benefit machines without CMOS as well as those
|
|
* without a battery-backed CMOS (e.g. some laptops).
|
|
*/
|
|
#if CONFIG_USE_OPTION_TABLE
|
|
#include <pc80/mc146818rtc.h>
|
|
#else
|
|
static inline int get_option(void *dest, const char *name) { return -1; }
|
|
#endif
|
|
|
|
/* initialize the console */
|
|
void console_init(void)
|
|
{
|
|
struct console_driver *driver;
|
|
if(get_option(&console_loglevel, "debug_level"))
|
|
console_loglevel=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
|
|
|
|
for(driver = console_drivers; driver < econsole_drivers; driver++) {
|
|
if (!driver->init)
|
|
continue;
|
|
driver->init();
|
|
}
|
|
}
|
|
|
|
void console_tx_flush(void)
|
|
{
|
|
struct console_driver *driver;
|
|
for(driver = console_drivers; driver < econsole_drivers; driver++) {
|
|
if (!driver->tx_flush)
|
|
continue;
|
|
driver->tx_flush();
|
|
}
|
|
}
|
|
|
|
static void __console_tx_byte(unsigned char byte)
|
|
{
|
|
struct console_driver *driver;
|
|
for(driver = console_drivers; driver < econsole_drivers; driver++) {
|
|
driver->tx_byte(byte);
|
|
}
|
|
}
|
|
|
|
void console_tx_byte(unsigned char byte)
|
|
{
|
|
if (byte == '\n')
|
|
__console_tx_byte('\r');
|
|
__console_tx_byte(byte);
|
|
}
|
|
|
|
unsigned char console_rx_byte(void)
|
|
{
|
|
struct console_driver *driver;
|
|
for(driver = console_drivers; driver < econsole_drivers; driver++) {
|
|
if (driver->tst_byte)
|
|
break;
|
|
}
|
|
if (driver == econsole_drivers)
|
|
return 0;
|
|
while (!driver->tst_byte());
|
|
return driver->rx_byte();
|
|
}
|
|
|
|
int console_tst_byte(void)
|
|
{
|
|
struct console_driver *driver;
|
|
for(driver = console_drivers; driver < econsole_drivers; driver++)
|
|
if (driver->tst_byte)
|
|
return driver->tst_byte();
|
|
return 0;
|
|
}
|
|
|
|
#else // __PRE_RAM__ ^^^ NOT defined vvv defined
|
|
|
|
void console_init(void)
|
|
{
|
|
#if defined(__BOOT_BLOCK__) && CONFIG_BOOTBLOCK_CONSOLE || \
|
|
!defined(__BOOT_BLOCK__) && CONFIG_EARLY_CONSOLE
|
|
|
|
#if CONFIG_USBDEBUG
|
|
enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);
|
|
early_usbdebug_init();
|
|
#endif
|
|
#if CONFIG_CONSOLE_SERIAL
|
|
uart_init();
|
|
#endif
|
|
#if CONFIG_DRIVERS_OXFORD_OXPCIE && CONFIG_CONSOLE_SERIAL8250MEM
|
|
oxford_init();
|
|
#endif
|
|
#if CONFIG_CONSOLE_NE2K
|
|
ne2k_init(CONFIG_CONSOLE_NE2K_IO_PORT);
|
|
#endif
|
|
#if CONFIG_CONSOLE_CBMEM
|
|
cbmemc_init();
|
|
#endif
|
|
static const char console_test[] =
|
|
"\n\ncoreboot-"
|
|
COREBOOT_VERSION
|
|
COREBOOT_EXTRA_VERSION
|
|
" "
|
|
COREBOOT_BUILD
|
|
" starting...\n";
|
|
print_info(console_test);
|
|
|
|
#endif /* CONFIG_EARLY_CONSOLE */
|
|
}
|
|
#endif
|