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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Google Inc.
*
* 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.
*/
#include <console/console.h>
#include <bootmode.h>
#include <string.h>
#include <arch/io.h>
#include <cbmem.h>
#include <arch/cbfs.h>
#include <cbfs.h>
#include <halt.h>
#include <ip_checksum.h>
#include <pc80/mc146818rtc.h>
#include <device/pci_def.h>
#include "raminit.h"
#include "pei_data.h"
#include "haswell.h"
void save_mrc_data(struct pei_data *pei_data)
{
struct mrc_data_container *mrcdata;
int output_len = ALIGN(pei_data->mrc_output_len, 16);
/* Save the MRC S3 restore data to cbmem */
mrcdata = cbmem_add
(CBMEM_ID_MRCDATA,
output_len + sizeof(struct mrc_data_container));
printk(BIOS_DEBUG, "Relocate MRC DATA from %p to %p (%u bytes)\n",
pei_data->mrc_output, mrcdata, output_len);
mrcdata->mrc_signature = MRC_DATA_SIGNATURE;
mrcdata->mrc_data_size = output_len;
mrcdata->reserved = 0;
memcpy(mrcdata->mrc_data, pei_data->mrc_output,
pei_data->mrc_output_len);
/* Zero the unused space in aligned buffer. */
if (output_len > pei_data->mrc_output_len)
memset(mrcdata->mrc_data+pei_data->mrc_output_len, 0,
output_len - pei_data->mrc_output_len);
mrcdata->mrc_checksum = compute_ip_checksum(mrcdata->mrc_data,
mrcdata->mrc_data_size);
}
static void prepare_mrc_cache(struct pei_data *pei_data)
{
struct mrc_data_container *mrc_cache;
// preset just in case there is an error
pei_data->mrc_input = NULL;
pei_data->mrc_input_len = 0;
if ((mrc_cache = find_current_mrc_cache()) == NULL) {
/* error message printed in find_current_mrc_cache */
return;
}
pei_data->mrc_input = mrc_cache->mrc_data;
pei_data->mrc_input_len = mrc_cache->mrc_data_size;
printk(BIOS_DEBUG, "%s: at %p, size %x checksum %04x\n",
__func__, pei_data->mrc_input,
pei_data->mrc_input_len, mrc_cache->mrc_checksum);
}
static const char* ecc_decoder[] = {
"inactive",
"active on IO",
"disabled on IO",
"active"
};
/*
* Dump in the log memory controller configuration as read from the memory
* controller registers.
*/
static void report_memory_config(void)
{
u32 addr_decoder_common, addr_decode_ch[2];
int i;
addr_decoder_common = MCHBAR32(0x5000);
addr_decode_ch[0] = MCHBAR32(0x5004);
addr_decode_ch[1] = MCHBAR32(0x5008);
printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n",
(MCHBAR32(0x5e04) * 13333 * 2 + 50)/100);
printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n",
addr_decoder_common & 3,
(addr_decoder_common >> 2) & 3,
(addr_decoder_common >> 4) & 3);
for (i = 0; i < ARRAY_SIZE(addr_decode_ch); i++) {
u32 ch_conf = addr_decode_ch[i];
printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n",
i, ch_conf);
printk(BIOS_DEBUG, " ECC %s\n",
ecc_decoder[(ch_conf >> 24) & 3]);
printk(BIOS_DEBUG, " enhanced interleave mode %s\n",
((ch_conf >> 22) & 1) ? "on" : "off");
printk(BIOS_DEBUG, " rank interleave %s\n",
((ch_conf >> 21) & 1) ? "on" : "off");
printk(BIOS_DEBUG, " DIMMA %d MB width %s %s rank%s\n",
((ch_conf >> 0) & 0xff) * 256,
((ch_conf >> 19) & 1) ? "x16" : "x8 or x32",
((ch_conf >> 17) & 1) ? "dual" : "single",
((ch_conf >> 16) & 1) ? "" : ", selected");
printk(BIOS_DEBUG, " DIMMB %d MB width %s %s rank%s\n",
((ch_conf >> 8) & 0xff) * 256,
((ch_conf >> 19) & 1) ? "x16" : "x8 or x32",
((ch_conf >> 18) & 1) ? "dual" : "single",
((ch_conf >> 16) & 1) ? ", selected" : "");
}
}
/**
* Find PEI executable in coreboot filesystem and execute it.
*
* @param pei_data: configuration data for UEFI PEI reference code
*/
void sdram_initialize(struct pei_data *pei_data)
{
unsigned long entry;
printk(BIOS_DEBUG, "Starting UEFI PEI System Agent\n");
/*
* Do not pass MRC data in for recovery mode boot,
* Always pass it in for S3 resume.
*/
if (!recovery_mode_enabled() || pei_data->boot_mode == 2)
prepare_mrc_cache(pei_data);
/* If MRC data is not found we cannot continue S3 resume. */
if (pei_data->boot_mode == 2 && !pei_data->mrc_input) {
post_code(POST_RESUME_FAILURE);
printk(BIOS_DEBUG, "Giving up in sdram_initialize: "
"No MRC data\n");
outb(0x6, 0xcf9);
halt();
}
/* Pass console handler in pei_data */
pei_data->tx_byte = do_putchar;
/* Locate and call UEFI System Agent binary. */
entry = (unsigned long)cbfs_get_file_content(
CBFS_DEFAULT_MEDIA, "mrc.bin", CBFS_TYPE_MRC, NULL);
if (entry) {
int rv;
asm volatile (
"call *%%ecx\n\t"
:"=a" (rv) : "c" (entry), "a" (pei_data));
if (rv) {
switch (rv) {
case -1:
printk(BIOS_ERR, "PEI version mismatch.\n");
break;
case -2:
printk(BIOS_ERR, "Invalid memory frequency.\n");
break;
default:
printk(BIOS_ERR, "MRC returned %x.\n", rv);
}
die("Nonzero MRC return value.\n");
}
} else {
die("UEFI PEI System Agent not found.\n");
}
/* For reference print the System Agent version
* after executing the UEFI PEI stage.
*/
u32 version = MCHBAR32(0x5034);
printk(BIOS_DEBUG, "System Agent Version %d.%d.%d Build %d\n",
version >> 24 , (version >> 16) & 0xff,
(version >> 8) & 0xff, version & 0xff);
report_memory_config();
}
|
