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/*
* 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 <arch/io.h>
#include <console/console.h>
#if CONFIG_CMOS_POST
#include <pc80/mc146818rtc.h>
#include <smp/spinlock.h>
#endif
#include <elog.h>
/* Write POST information */
/* someday romcc will be gone. */
#ifndef __ROMCC__
/* Some mainboards have very nice features beyond just a simple display.
* They can override this function.
*/
void __attribute__((weak)) mainboard_post(uint8_t value)
{
}
#else
/* This just keeps the number of #ifs to a minimum */
#define mainboard_post(x)
#endif
#if CONFIG_CMOS_POST
DECLARE_SPIN_LOCK(cmos_post_lock)
#if !defined(__PRE_RAM__)
void cmos_post_log(void)
{
u8 code = 0;
spin_lock(&cmos_post_lock);
/* Get post code from other bank */
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
case CMOS_POST_BANK_0_MAGIC:
code = cmos_read(CMOS_POST_BANK_1_OFFSET);
break;
case CMOS_POST_BANK_1_MAGIC:
code = cmos_read(CMOS_POST_BANK_0_OFFSET);
break;
}
spin_unlock(&cmos_post_lock);
/* Check last post code in previous boot against normal list */
switch (code) {
case POST_OS_BOOT:
case POST_OS_RESUME:
case POST_ENTER_ELF_BOOT:
case 0:
break;
default:
printk(BIOS_WARNING, "POST: Unexpected post code "
"in previous boot: 0x%02x\n", code);
#if CONFIG_ELOG
elog_add_event_word(ELOG_TYPE_LAST_POST_CODE, code);
#endif
}
}
#endif /* !__PRE_RAM__ */
static void cmos_post_code(u8 value)
{
spin_lock(&cmos_post_lock);
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
case CMOS_POST_BANK_0_MAGIC:
cmos_write(value, CMOS_POST_BANK_0_OFFSET);
break;
case CMOS_POST_BANK_1_MAGIC:
cmos_write(value, CMOS_POST_BANK_1_OFFSET);
break;
}
spin_unlock(&cmos_post_lock);
}
#endif /* CONFIG_CMOS_POST */
void post_code(uint8_t value)
{
#if !CONFIG_NO_POST
#if CONFIG_CONSOLE_POST
print_emerg("POST: 0x");
print_emerg_hex8(value);
print_emerg("\n");
#endif
#if CONFIG_CMOS_POST
cmos_post_code(value);
#endif
#if CONFIG_IO_POST
outb(value, CONFIG_IO_POST_PORT);
#endif
#endif
mainboard_post(value);
}
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