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
|
/* lsefimemmap.c - Display memory map. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/types.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efi/api.h>
#include <grub/efi/efi.h>
#include <grub/command.h>
GRUB_MOD_LICENSE ("GPLv3+");
#define ADD_MEMORY_DESCRIPTOR(desc, size) \
((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size)))
static grub_err_t
grub_cmd_lsefimmap (grub_command_t cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
{
grub_efi_uintn_t map_size;
grub_efi_memory_descriptor_t *memory_map;
grub_efi_memory_descriptor_t *memory_map_end;
grub_efi_memory_descriptor_t *desc;
grub_efi_uintn_t desc_size;
map_size = 0;
if (grub_efi_get_memory_map (&map_size, NULL, NULL, &desc_size, 0) < 0)
return 0;
memory_map = grub_malloc (map_size);
if (memory_map == NULL)
return grub_errno;
if (grub_efi_get_memory_map (&map_size, memory_map, NULL, &desc_size, 0) <= 0)
goto fail;
grub_printf
("Type Physical start - end #Pages "
" Size Attributes\n");
memory_map_end = ADD_MEMORY_DESCRIPTOR (memory_map, map_size);
for (desc = memory_map;
desc < memory_map_end;
desc = ADD_MEMORY_DESCRIPTOR (desc, desc_size))
{
grub_efi_uint64_t size;
grub_efi_uint64_t attr;
static const char types_str[][9] =
{
"reserved",
"ldr-code",
"ldr-data",
"BS-code ",
"BS-data ",
"RT-code ",
"RT-data ",
"conv-mem",
"unusable",
"ACPI-rec",
"ACPI-nvs",
"MMIO ",
"IO-ports",
"PAL-code",
"persist ",
};
if (desc->type < ARRAY_SIZE (types_str))
grub_printf ("%s ", types_str[desc->type]);
else
grub_printf ("Unk %02x ", desc->type);
grub_printf (" %016" PRIxGRUB_UINT64_T "-%016" PRIxGRUB_UINT64_T
" %08" PRIxGRUB_UINT64_T,
desc->physical_start,
desc->physical_start + (desc->num_pages << 12) - 1,
desc->num_pages);
size = desc->num_pages << 12; /* 4 KiB page size */
/*
* Since size is a multiple of 4 KiB, no need to handle units
* of just Bytes (which would use a mask of 0x3ff).
*
* 14 characters would support the largest possible number of 4 KiB
* pages that are not a multiple of larger units (e.g., MiB):
* 17592186044415 (0xffffff_fffff000), but that uses a lot of
* whitespace for a rare case. 6 characters usually suffices;
* columns will be off if not, but this is preferable to rounding.
*/
if (size & 0xfffff)
grub_printf (" %6" PRIuGRUB_UINT64_T "KiB", size >> 10);
else if (size & 0x3fffffff)
grub_printf (" %6" PRIuGRUB_UINT64_T "MiB", size >> 20);
else if (size & 0xffffffffff)
grub_printf (" %6" PRIuGRUB_UINT64_T "GiB", size >> 30);
else if (size & 0x3ffffffffffff)
grub_printf (" %6" PRIuGRUB_UINT64_T "TiB", size >> 40);
else if (size & 0xfffffffffffffff)
grub_printf (" %6" PRIuGRUB_UINT64_T "PiB", size >> 50);
else
grub_printf (" %6" PRIuGRUB_UINT64_T "EiB", size >> 60);
attr = desc->attribute;
if (attr & GRUB_EFI_MEMORY_RUNTIME)
grub_printf (" RT");
if (attr & GRUB_EFI_MEMORY_UC)
grub_printf (" UC");
if (attr & GRUB_EFI_MEMORY_WC)
grub_printf (" WC");
if (attr & GRUB_EFI_MEMORY_WT)
grub_printf (" WT");
if (attr & GRUB_EFI_MEMORY_WB)
grub_printf (" WB");
if (attr & GRUB_EFI_MEMORY_UCE)
grub_printf (" UCE");
if (attr & GRUB_EFI_MEMORY_WP)
grub_printf (" WP");
if (attr & GRUB_EFI_MEMORY_RP)
grub_printf (" RP");
if (attr & GRUB_EFI_MEMORY_XP)
grub_printf (" XP");
if (attr & GRUB_EFI_MEMORY_NV)
grub_printf (" NV");
if (attr & GRUB_EFI_MEMORY_MORE_RELIABLE)
grub_printf (" MR");
if (attr & GRUB_EFI_MEMORY_RO)
grub_printf (" RO");
grub_printf ("\n");
}
fail:
grub_free (memory_map);
return 0;
}
static grub_command_t cmd;
GRUB_MOD_INIT(lsefimmap)
{
cmd = grub_register_command ("lsefimmap", grub_cmd_lsefimmap,
"", "Display EFI memory map.");
}
GRUB_MOD_FINI(lsefimmap)
{
grub_unregister_command (cmd);
}
|
