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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Advanced Micro Devices, 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.
*/
#include <spi-generic.h>
#include <spi_flash.h>
#include <string.h>
#include <cbmem.h>
#include <console/console.h>
#include <northbridge/amd/agesa/state_machine.h>
#include <AGESA.h>
#include <northbridge/amd/agesa/agesa_helper.h>
typedef enum {
S3DataTypeNonVolatile = 0, ///< NonVolatile Data Type
S3DataTypeMTRR ///< MTRR storage
} S3_DATA_TYPE;
/* The size needs to be 4k aligned, which is the sector size of most flashes. */
#define S3_DATA_MTRR_SIZE 0x1000
#define S3_DATA_NONVOLATILE_SIZE 0x1000
#if CONFIG(HAVE_ACPI_RESUME) && \
(S3_DATA_MTRR_SIZE + S3_DATA_NONVOLATILE_SIZE) > CONFIG_S3_DATA_SIZE
#error "Please increase the value of S3_DATA_SIZE"
#endif
static void get_s3nv_data(S3_DATA_TYPE S3DataType, uintptr_t *pos, uintptr_t *len)
{
/* FIXME: Find file from CBFS. */
u32 s3_data = CONFIG_S3_DATA_POS;
switch (S3DataType) {
case S3DataTypeMTRR:
*pos = s3_data;
*len = S3_DATA_MTRR_SIZE;
break;
case S3DataTypeNonVolatile:
*pos = s3_data + S3_DATA_MTRR_SIZE;
*len = S3_DATA_NONVOLATILE_SIZE;
break;
default:
*pos = 0;
*len = 0;
break;
}
}
AGESA_STATUS OemInitResume(AMD_S3_PARAMS *dataBlock)
{
uintptr_t pos, size;
get_s3nv_data(S3DataTypeNonVolatile, &pos, &size);
u32 len = *(u32*)pos;
/* Test for uninitialized s3nv data in SPI. */
if (len == 0 || len == (u32)-1ULL)
return AGESA_FATAL;
dataBlock->NvStorageSize = len;
dataBlock->NvStorage = (void *) (pos + sizeof(u32));
return AGESA_SUCCESS;
}
AGESA_STATUS OemS3LateRestore(AMD_S3_PARAMS *dataBlock)
{
char *heap = cbmem_find(CBMEM_ID_RESUME_SCRATCH);
if (heap == NULL)
return AGESA_FATAL;
printk(BIOS_DEBUG, "Using resume HEAP at %08x\n",
(unsigned int)(uintptr_t) heap);
/* Return allocated CBMEM size, we do not keep track of
* how much was actually used.
*/
dataBlock->VolatileStorageSize = HIGH_MEMORY_SCRATCH;
dataBlock->VolatileStorage = heap;
return AGESA_SUCCESS;
}
#if ENV_RAMSTAGE
static int spi_SaveS3info(u32 pos, u32 size, u8 *buf, u32 len)
{
#if CONFIG(SPI_FLASH)
struct spi_flash flash;
spi_init();
if (spi_flash_probe(0, 0, &flash))
return -1;
spi_flash_volatile_group_begin(&flash);
spi_flash_erase(&flash, pos, size);
spi_flash_write(&flash, pos, sizeof(len), &len);
spi_flash_write(&flash, pos + sizeof(len), len, buf);
spi_flash_volatile_group_end(&flash);
return 0;
#else
return -1;
#endif
}
static u8 MTRRStorage[S3_DATA_MTRR_SIZE];
AGESA_STATUS OemS3Save(AMD_S3_PARAMS *dataBlock)
{
u32 MTRRStorageSize = 0;
uintptr_t pos, size;
/* To be consumed in AmdInitResume. */
get_s3nv_data(S3DataTypeNonVolatile, &pos, &size);
if (size && dataBlock->NvStorageSize)
spi_SaveS3info(pos, size, dataBlock->NvStorage,
dataBlock->NvStorageSize);
else
printk(BIOS_EMERG,
"Error: Cannot store memory training results in SPI.\n"
"Error: S3 resume will not be possible.\n"
);
/* To be consumed in AmdS3LateRestore. */
char *heap = cbmem_add(CBMEM_ID_RESUME_SCRATCH, HIGH_MEMORY_SCRATCH);
if (heap) {
memset(heap, 0, HIGH_MEMORY_SCRATCH);
memcpy(heap, dataBlock->VolatileStorage, dataBlock->VolatileStorageSize);
}
/* Collect MTRR setup. */
backup_mtrr(MTRRStorage, &MTRRStorageSize);
/* To be consumed in restore_mtrr, CPU enumeration in ramstage. */
get_s3nv_data(S3DataTypeMTRR, &pos, &size);
if (size && MTRRStorageSize)
spi_SaveS3info(pos, size, MTRRStorage, MTRRStorageSize);
return AGESA_SUCCESS;
}
#endif /* ENV_RAMSTAGE */
const void *OemS3Saved_MTRR_Storage(void)
{
uintptr_t pos, size;
get_s3nv_data(S3DataTypeMTRR, &pos, &size);
if (!size)
return NULL;
return (void *)(pos + sizeof(UINT32));
}
|
