| /* |
| * 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); |
| } |