| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich@gmail.com> |
| * Copyright (C) 2007-2008 coresystems GmbH |
| * Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. |
| * Copyright (C) 2015-2016 Intel Corporation |
| * |
| * 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. |
| * |
| * Replacement for cache_as_ram.inc when using the C environment boot block. |
| */ |
| |
| #include <rules.h> |
| #include <soc/sd.h> |
| |
| .section ".text" |
| .global car_stage_entry |
| |
| car_stage_entry: |
| |
| /* Enter the C code */ |
| call car_stage_c_entry |
| |
| #if IS_ENABLED(CONFIG_PLATFORM_USES_FSP1_1) |
| #if !ENV_VERSTAGE |
| #include "src/drivers/intel/fsp1_1/after_raminit.S" |
| #endif |
| #endif |
| |
| /* The code should never reach this point */ |
| movb $0x69, %ah |
| jmp .Lhlt |
| |
| #---------------------------------------------------------------------------- |
| # |
| # Procedure: .Lhlt |
| # |
| # Input: ah - Upper 8-bits of POST code |
| # al - Lower 8-bits of POST code |
| # |
| # Description: |
| # Infinite loop displaying alternating POST code values |
| # |
| #---------------------------------------------------------------------------- |
| |
| #define FLASH_DELAY 0x1000 /* I/O delay between post codes on failure */ |
| #define POST_DELAY 0x50 |
| |
| .Lhlt: |
| xchg %al, %ah |
| mov $POST_DELAY, %dh |
| #if IS_ENABLED(CONFIG_POST_IO) |
| outb %al, $CONFIG_POST_IO_PORT |
| #else |
| post_code(POST_DEAD_CODE) |
| #endif |
| .flash_setup: |
| movl $FLASH_DELAY, %ecx |
| .flash_delay: |
| outb %al, $0xED |
| loop .flash_delay |
| #if IS_ENABLED(CONFIG_ENABLE_DEBUG_LED) |
| movl $SD_HOST_CTRL, %ebx |
| movb 0(%ebx), %dl |
| xorb $1, %dl |
| movb %dl, 0(%ebx) |
| #endif /* CONFIG_ENABLE_DEBUG_LED */ |
| decb %dh |
| jnz .flash_setup |
| jmp .Lhlt |