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Simon Glassf25e3e12023-03-20 08:30:13 +1300[diff] [blame^]1.. SPDX-License-Identifier: GPL-2.0+
2.. Copyright 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
3
4efi command
5===========
6
7Synopsis
8--------
9
10::
11
12 efi mem [all]
13
14Description
15-----------
16
17The *efi* command provides information about the EFI environment U-Boot is
18running in, when it is started from EFI.
19
20When running as an EFI app, this command queries EFI boot services for the
21information. When running as an EFI payload, EFI boot services have been
22stopped, so it uses the information collected by the boot stub before that
23happened.
24
25efi mem
26~~~~~~~
27
28This shows the EFI memory map, sorted in order of physical address.
29
30This is normally a very large table. To help reduce the amount of detritus,
31boot-time memory is normally merged with conventional memory. Use the 'all'
32argument to show everything.
33
34The fields are as follows:
35
36#
37 Entry number (sequentially from 0)
38
39Type
40 Memory type. EFI has a large number of memory types. The type is shown in
41 the format <n>:<name> where in is the format number in hex and <name> is the
42 name.
43
44Physical
45 Physical address
46
47Virtual
48 Virtual address
49
50Size
51 Size of memory area in bytes
52
53Attributes
54 Shows a code for memory attributes. The key for this is shown below the
55 table.
56
57Example
58-------
59
60::
61
62 => efi mem
63 EFI table at 0, memory map 000000001ad38b60, size 1260, key a79, version 1, descr. size 0x30
64 # Type Physical Virtual Size Attributes
65 0 7:conv 0000000000 0000000000 00000a0000 f
66 <gap> 00000a0000 0000060000
67 1 7:conv 0000100000 0000000000 0000700000 f
68 2 a:acpi_nvs 0000800000 0000000000 0000008000 f
69 3 7:conv 0000808000 0000000000 0000008000 f
70 4 a:acpi_nvs 0000810000 0000000000 00000f0000 f
71 5 7:conv 0000900000 0000000000 001efef000 f
72 6 6:rt_data 001f8ef000 0000000000 0000100000 rf
73 7 5:rt_code 001f9ef000 0000000000 0000100000 rf
74 8 0:reserved 001faef000 0000000000 0000080000 f
75 9 9:acpi_reclaim 001fb6f000 0000000000 0000010000 f
76 10 a:acpi_nvs 001fb7f000 0000000000 0000080000 f
77 11 7:conv 001fbff000 0000000000 0000359000 f
78 12 6:rt_data 001ff58000 0000000000 0000020000 rf
79 13 a:acpi_nvs 001ff78000 0000000000 0000088000 f
80 <gap> 0020000000 0090000000
81 14 0:reserved 00b0000000 0000000000 0010000000 1
82
83 Attributes key:
84 f: uncached, write-coalescing, write-through, write-back
85 rf: uncached, write-coalescing, write-through, write-back, needs runtime mapping
86 1: uncached
87 *Some areas are merged (use 'all' to see)
88
89
90 => efi mem all
91 EFI table at 0, memory map 000000001ad38bb0, size 1260, key a79, version 1, descr. size 0x30
92 # Type Physical Virtual Size Attributes
93 0 3:bs_code 0000000000 0000000000 0000001000 f
94 1 7:conv 0000001000 0000000000 000009f000 f
95 <gap> 00000a0000 0000060000
96 2 7:conv 0000100000 0000000000 0000700000 f
97 3 a:acpi_nvs 0000800000 0000000000 0000008000 f
98 4 7:conv 0000808000 0000000000 0000008000 f
99 5 a:acpi_nvs 0000810000 0000000000 00000f0000 f
100 6 4:bs_data 0000900000 0000000000 0000c00000 f
101 7 7:conv 0001500000 0000000000 000aa36000 f
102 8 2:loader_data 000bf36000 0000000000 0010000000 f
103 9 4:bs_data 001bf36000 0000000000 0000020000 f
104 10 7:conv 001bf56000 0000000000 00021e1000 f
105 11 1:loader_code 001e137000 0000000000 00000c4000 f
106 12 7:conv 001e1fb000 0000000000 000009b000 f
107 13 1:loader_code 001e296000 0000000000 00000e2000 f
108 14 7:conv 001e378000 0000000000 000005b000 f
109 15 4:bs_data 001e3d3000 0000000000 000001e000 f
110 16 7:conv 001e3f1000 0000000000 0000016000 f
111 17 4:bs_data 001e407000 0000000000 0000016000 f
112 18 2:loader_data 001e41d000 0000000000 0000002000 f
113 19 4:bs_data 001e41f000 0000000000 0000828000 f
114 20 3:bs_code 001ec47000 0000000000 0000045000 f
115 21 4:bs_data 001ec8c000 0000000000 0000001000 f
116 22 3:bs_code 001ec8d000 0000000000 000000e000 f
117 23 4:bs_data 001ec9b000 0000000000 0000001000 f
118 24 3:bs_code 001ec9c000 0000000000 000002c000 f
119 25 4:bs_data 001ecc8000 0000000000 0000001000 f
120 26 3:bs_code 001ecc9000 0000000000 000000c000 f
121 27 4:bs_data 001ecd5000 0000000000 0000006000 f
122 28 3:bs_code 001ecdb000 0000000000 0000014000 f
123 29 4:bs_data 001ecef000 0000000000 0000001000 f
124 30 3:bs_code 001ecf0000 0000000000 000005b000 f
125 31 4:bs_data 001ed4b000 0000000000 000000b000 f
126 32 3:bs_code 001ed56000 0000000000 0000024000 f
127 33 4:bs_data 001ed7a000 0000000000 0000006000 f
128 34 3:bs_code 001ed80000 0000000000 0000010000 f
129 35 4:bs_data 001ed90000 0000000000 0000002000 f
130 36 3:bs_code 001ed92000 0000000000 0000025000 f
131 37 4:bs_data 001edb7000 0000000000 0000003000 f
132 38 3:bs_code 001edba000 0000000000 0000011000 f
133 39 4:bs_data 001edcb000 0000000000 0000008000 f
134 40 3:bs_code 001edd3000 0000000000 000002d000 f
135 41 4:bs_data 001ee00000 0000000000 0000201000 f
136 42 3:bs_code 001f001000 0000000000 0000024000 f
137 43 4:bs_data 001f025000 0000000000 0000002000 f
138 44 3:bs_code 001f027000 0000000000 0000009000 f
139 45 4:bs_data 001f030000 0000000000 0000005000 f
140 46 3:bs_code 001f035000 0000000000 000002f000 f
141 47 4:bs_data 001f064000 0000000000 0000001000 f
142 48 3:bs_code 001f065000 0000000000 0000005000 f
143 49 4:bs_data 001f06a000 0000000000 0000005000 f
144 50 3:bs_code 001f06f000 0000000000 0000007000 f
145 51 4:bs_data 001f076000 0000000000 0000007000 f
146 52 3:bs_code 001f07d000 0000000000 000000d000 f
147 53 4:bs_data 001f08a000 0000000000 0000001000 f
148 54 3:bs_code 001f08b000 0000000000 0000006000 f
149 55 4:bs_data 001f091000 0000000000 0000004000 f
150 56 3:bs_code 001f095000 0000000000 000000d000 f
151 57 4:bs_data 001f0a2000 0000000000 0000003000 f
152 58 3:bs_code 001f0a5000 0000000000 0000026000 f
153 59 4:bs_data 001f0cb000 0000000000 0000005000 f
154 60 3:bs_code 001f0d0000 0000000000 0000019000 f
155 61 4:bs_data 001f0e9000 0000000000 0000004000 f
156 62 3:bs_code 001f0ed000 0000000000 0000024000 f
157 63 4:bs_data 001f111000 0000000000 0000008000 f
158 64 3:bs_code 001f119000 0000000000 000000b000 f
159 65 4:bs_data 001f124000 0000000000 0000001000 f
160 66 3:bs_code 001f125000 0000000000 0000002000 f
161 67 4:bs_data 001f127000 0000000000 0000002000 f
162 68 3:bs_code 001f129000 0000000000 0000009000 f
163 69 4:bs_data 001f132000 0000000000 0000003000 f
164 70 3:bs_code 001f135000 0000000000 0000005000 f
165 71 4:bs_data 001f13a000 0000000000 0000003000 f
166 72 3:bs_code 001f13d000 0000000000 0000005000 f
167 73 4:bs_data 001f142000 0000000000 0000003000 f
168 74 3:bs_code 001f145000 0000000000 0000011000 f
169 75 4:bs_data 001f156000 0000000000 000000b000 f
170 76 3:bs_code 001f161000 0000000000 0000009000 f
171 77 4:bs_data 001f16a000 0000000000 0000400000 f
172 78 3:bs_code 001f56a000 0000000000 0000006000 f
173 79 4:bs_data 001f570000 0000000000 0000001000 f
174 80 3:bs_code 001f571000 0000000000 0000001000 f
175 81 4:bs_data 001f572000 0000000000 0000002000 f
176 82 3:bs_code 001f574000 0000000000 0000017000 f
177 83 4:bs_data 001f58b000 0000000000 0000364000 f
178 84 6:rt_data 001f8ef000 0000000000 0000100000 rf
179 85 5:rt_code 001f9ef000 0000000000 0000100000 rf
180 86 0:reserved 001faef000 0000000000 0000080000 f
181 87 9:acpi_reclaim 001fb6f000 0000000000 0000010000 f
182 88 a:acpi_nvs 001fb7f000 0000000000 0000080000 f
183 89 4:bs_data 001fbff000 0000000000 0000201000 f
184 90 7:conv 001fe00000 0000000000 00000e8000 f
185 91 4:bs_data 001fee8000 0000000000 0000020000 f
186 92 3:bs_code 001ff08000 0000000000 0000026000 f
187 93 4:bs_data 001ff2e000 0000000000 0000009000 f
188 94 3:bs_code 001ff37000 0000000000 0000021000 f
189 95 6:rt_data 001ff58000 0000000000 0000020000 rf
190 96 a:acpi_nvs 001ff78000 0000000000 0000088000 f
191 <gap> 0020000000 0090000000
192 97 0:reserved 00b0000000 0000000000 0010000000 1
193
194 Attributes key:
195 f: uncached, write-coalescing, write-through, write-back
196 rf: uncached, write-coalescing, write-through, write-back, needs runtime mapping
197 1: uncached