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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Intel Corp.
* (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.)
* (Written by Andrey Petrov <andrey.petrov@intel.com> for Intel Corp.)
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*/
#include <arch/io.h>
#include <cbfs.h>
#include <console/console.h>
#include <fsp/util.h>
#include <lib.h>
#include <memrange.h>
#include <string.h>
static bool looks_like_fsp_header(const uint8_t *raw_hdr)
{
if (memcmp(raw_hdr, FSP_HDR_SIGNATURE, 4)) {
printk(BIOS_ALERT, "Did not find a valid FSP signature\n");
return false;
}
if (read32(raw_hdr + 4) != FSP_HDR_LEN) {
printk(BIOS_ALERT, "FSP header has invalid length\n");
return false;
}
return true;
}
enum cb_err fsp_identify(struct fsp_header *hdr, const void *fsp_blob)
{
const uint8_t *raw_hdr = fsp_blob;
if (!looks_like_fsp_header(raw_hdr))
return CB_ERR;
hdr->revision = read8(raw_hdr + 11);
hdr->fsp_revision = read32(raw_hdr + 12);
memcpy(hdr->image_id, raw_hdr + 16, ARRAY_SIZE(hdr->image_id));
hdr->image_id[ARRAY_SIZE(hdr->image_id) - 1] = '\0';
hdr->image_size = read32(raw_hdr + 24);
hdr->image_base = read32(raw_hdr + 28);
hdr->image_attribute = read32(raw_hdr + 32);
hdr->cfg_region_offset = read32(raw_hdr + 36);
hdr->cfg_region_size = read32(raw_hdr + 40);
hdr->notify_phase_entry_offset = read32(raw_hdr + 56);
hdr->memory_init_entry_offset = read32(raw_hdr + 60);
hdr->silicon_init_entry_offset = read32(raw_hdr + 68);
return CB_SUCCESS;
}
void fsp_print_header_info(const struct fsp_header *hdr)
{
printk(BIOS_DEBUG, "Revision %u, image ID: %s, base 0x%lx + 0x%zx\n",
hdr->revision, hdr->image_id, hdr->image_base, hdr->image_size);
printk(BIOS_DEBUG, "\tConfig region 0x%zx + 0x%zx\n",
hdr->cfg_region_offset, hdr->cfg_region_size);
if (hdr->image_attribute & FSP_HDR_ATTRIB_FSPM) {
printk(BIOS_DEBUG, "\tMemory init offset 0x%zx\n",
hdr->memory_init_entry_offset);
}
if (hdr->image_attribute & FSP_HDR_ATTRIB_FSPS) {
printk(BIOS_DEBUG, "\tSilicon init offset 0x%zx\n",
hdr->silicon_init_entry_offset);
printk(BIOS_DEBUG, "\tNotify phase offset 0x%zx\n",
hdr->notify_phase_entry_offset);
}
}
enum cb_err fsp_load_binary(struct fsp_header *hdr,
const char *name,
struct range_entry *range)
{
struct cbfsf file_desc;
struct region_device file_data;
void *membase;
if (cbfs_boot_locate(&file_desc, name, NULL)) {
printk(BIOS_ERR, "Could not locate %s in CBFS\n", name);
return CB_ERR;
}
cbfs_file_data(&file_data, &file_desc);
/* Map just enough of the file to be able to parse the header. */
membase = rdev_mmap(&file_data, FSP_HDR_OFFSET, FSP_HDR_LEN);
if (fsp_identify(hdr, membase) != CB_SUCCESS) {
printk(BIOS_ERR, "%s did not have a valid FSP header\n", name);
return CB_ERR;
}
fsp_print_header_info(hdr);
/* Check if size specified in the header matches the cbfs file size */
if (region_device_sz(&file_data) < hdr->image_size) {
printk(BIOS_ERR, "%s size bigger than cbfs file.\n", name);
return CB_ERR;
}
/* Check if the binary load address is within expected range */
if (range_entry_base(range) > hdr->image_base ||
range_entry_end(range) <= hdr->image_base + hdr->image_size) {
printk(BIOS_ERR, "%s is outside of allowed range\n", name);
return CB_ERR;
}
/* Load binary into memory. */
if (rdev_readat(&file_data, (void *)hdr->image_base, 0, hdr->image_size) < 0)
return CB_ERR;
return CB_SUCCESS;
}
|
