summaryrefslogtreecommitdiff
path: root/src/console/post.c
blob: 74886834cec1ff1d0e644192d71e70547cb2a87a (plain)
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
 * 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
#if CONFIG_CMOS_POST_EXTRA
#include <device/device.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;
#if CONFIG_CMOS_POST_EXTRA
	u32 extra = 0;
#endif

	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);
#if CONFIG_CMOS_POST_EXTRA
		extra = cmos_read32(CMOS_POST_BANK_1_EXTRA);
#endif
		break;
	case CMOS_POST_BANK_1_MAGIC:
		code = cmos_read(CMOS_POST_BANK_0_OFFSET);
#if CONFIG_CMOS_POST_EXTRA
		extra = cmos_read32(CMOS_POST_BANK_0_EXTRA);
#endif
		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);
#if CONFIG_CMOS_POST_EXTRA
		if (extra)
			elog_add_event_dword(ELOG_TYPE_POST_EXTRA, extra);
#endif
#endif
	}
}

#if CONFIG_CMOS_POST_EXTRA
void post_log_extra(u32 value)
{
	spin_lock(&cmos_post_lock);

	switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
	case CMOS_POST_BANK_0_MAGIC:
		cmos_write32(CMOS_POST_BANK_0_EXTRA, value);
		break;
	case CMOS_POST_BANK_1_MAGIC:
		cmos_write32(CMOS_POST_BANK_1_EXTRA, value);
		break;
	}

	spin_unlock(&cmos_post_lock);
}
#endif /* CONFIG_CMOS_POST_EXTRA */
#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);
}