1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*
* 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 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 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 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
|
