| .. SPDX-License-Identifier: GPL-2.0+ |
| .. Copyright 2020, Heinrich Schuchardt <xypron.glpk@gmx.de> |
| |
| .. index:: |
| single: efi (command) |
| |
| efi command |
| =========== |
| |
| Synopsis |
| -------- |
| |
| :: |
| |
| efi mem [all] |
| efi tables |
| |
| Description |
| ----------- |
| |
| The *efi* command provides information about the EFI environment U-Boot is |
| running in, when it is started from EFI. |
| |
| When running as an EFI app, this command queries EFI boot services for the |
| information. When running as an EFI payload, EFI boot services have been |
| stopped, so it uses the information collected by the boot stub before that |
| happened. |
| |
| efi mem |
| ~~~~~~~ |
| |
| This shows the EFI memory map, sorted in order of physical address. |
| |
| This is normally a very large table. To help reduce the amount of detritus, |
| boot-time memory is normally merged with conventional memory. Use the 'all' |
| argument to show everything. |
| |
| The fields are as follows: |
| |
| # |
| Entry number (sequentially from 0) |
| |
| Type |
| Memory type. EFI has a large number of memory types. The type is shown in |
| the format <n>:<name> where in is the format number in hex and <name> is the |
| name. |
| |
| Physical |
| Physical address |
| |
| Virtual |
| Virtual address |
| |
| Size |
| Size of memory area in bytes |
| |
| Attributes |
| Shows a code for memory attributes. The key for this is shown below the |
| table. |
| |
| efi tables |
| ~~~~~~~~~~ |
| |
| This shows a list of the EFI tables provided in the system table. These use |
| GUIDs so it is not possible in general to show the name of a table. But some |
| effort is made to provide a useful table, where the GUID is known by U-Boot. |
| |
| |
| Example |
| ------- |
| |
| :: |
| |
| => efi mem |
| EFI table at 0, memory map 000000001ad38b60, size 1260, key a79, version 1, descr. size 0x30 |
| # Type Physical Virtual Size Attributes |
| 0 7:conv 0000000000 0000000000 00000a0000 f |
| <gap> 00000a0000 0000060000 |
| 1 7:conv 0000100000 0000000000 0000700000 f |
| 2 a:acpi_nvs 0000800000 0000000000 0000008000 f |
| 3 7:conv 0000808000 0000000000 0000008000 f |
| 4 a:acpi_nvs 0000810000 0000000000 00000f0000 f |
| 5 7:conv 0000900000 0000000000 001efef000 f |
| 6 6:rt_data 001f8ef000 0000000000 0000100000 rf |
| 7 5:rt_code 001f9ef000 0000000000 0000100000 rf |
| 8 0:reserved 001faef000 0000000000 0000080000 f |
| 9 9:acpi_reclaim 001fb6f000 0000000000 0000010000 f |
| 10 a:acpi_nvs 001fb7f000 0000000000 0000080000 f |
| 11 7:conv 001fbff000 0000000000 0000359000 f |
| 12 6:rt_data 001ff58000 0000000000 0000020000 rf |
| 13 a:acpi_nvs 001ff78000 0000000000 0000088000 f |
| <gap> 0020000000 0090000000 |
| 14 0:reserved 00b0000000 0000000000 0010000000 1 |
| |
| Attributes key: |
| f: uncached, write-coalescing, write-through, write-back |
| rf: uncached, write-coalescing, write-through, write-back, needs runtime mapping |
| 1: uncached |
| *Some areas are merged (use 'all' to see) |
| |
| |
| => efi mem all |
| EFI table at 0, memory map 000000001ad38bb0, size 1260, key a79, version 1, descr. size 0x30 |
| # Type Physical Virtual Size Attributes |
| 0 3:bs_code 0000000000 0000000000 0000001000 f |
| 1 7:conv 0000001000 0000000000 000009f000 f |
| <gap> 00000a0000 0000060000 |
| 2 7:conv 0000100000 0000000000 0000700000 f |
| 3 a:acpi_nvs 0000800000 0000000000 0000008000 f |
| 4 7:conv 0000808000 0000000000 0000008000 f |
| 5 a:acpi_nvs 0000810000 0000000000 00000f0000 f |
| 6 4:bs_data 0000900000 0000000000 0000c00000 f |
| 7 7:conv 0001500000 0000000000 000aa36000 f |
| 8 2:loader_data 000bf36000 0000000000 0010000000 f |
| 9 4:bs_data 001bf36000 0000000000 0000020000 f |
| 10 7:conv 001bf56000 0000000000 00021e1000 f |
| 11 1:loader_code 001e137000 0000000000 00000c4000 f |
| 12 7:conv 001e1fb000 0000000000 000009b000 f |
| 13 1:loader_code 001e296000 0000000000 00000e2000 f |
| 14 7:conv 001e378000 0000000000 000005b000 f |
| 15 4:bs_data 001e3d3000 0000000000 000001e000 f |
| 16 7:conv 001e3f1000 0000000000 0000016000 f |
| 17 4:bs_data 001e407000 0000000000 0000016000 f |
| 18 2:loader_data 001e41d000 0000000000 0000002000 f |
| 19 4:bs_data 001e41f000 0000000000 0000828000 f |
| 20 3:bs_code 001ec47000 0000000000 0000045000 f |
| 21 4:bs_data 001ec8c000 0000000000 0000001000 f |
| 22 3:bs_code 001ec8d000 0000000000 000000e000 f |
| 23 4:bs_data 001ec9b000 0000000000 0000001000 f |
| 24 3:bs_code 001ec9c000 0000000000 000002c000 f |
| 25 4:bs_data 001ecc8000 0000000000 0000001000 f |
| 26 3:bs_code 001ecc9000 0000000000 000000c000 f |
| 27 4:bs_data 001ecd5000 0000000000 0000006000 f |
| 28 3:bs_code 001ecdb000 0000000000 0000014000 f |
| 29 4:bs_data 001ecef000 0000000000 0000001000 f |
| 30 3:bs_code 001ecf0000 0000000000 000005b000 f |
| 31 4:bs_data 001ed4b000 0000000000 000000b000 f |
| 32 3:bs_code 001ed56000 0000000000 0000024000 f |
| 33 4:bs_data 001ed7a000 0000000000 0000006000 f |
| 34 3:bs_code 001ed80000 0000000000 0000010000 f |
| 35 4:bs_data 001ed90000 0000000000 0000002000 f |
| 36 3:bs_code 001ed92000 0000000000 0000025000 f |
| 37 4:bs_data 001edb7000 0000000000 0000003000 f |
| 38 3:bs_code 001edba000 0000000000 0000011000 f |
| 39 4:bs_data 001edcb000 0000000000 0000008000 f |
| 40 3:bs_code 001edd3000 0000000000 000002d000 f |
| 41 4:bs_data 001ee00000 0000000000 0000201000 f |
| 42 3:bs_code 001f001000 0000000000 0000024000 f |
| 43 4:bs_data 001f025000 0000000000 0000002000 f |
| 44 3:bs_code 001f027000 0000000000 0000009000 f |
| 45 4:bs_data 001f030000 0000000000 0000005000 f |
| 46 3:bs_code 001f035000 0000000000 000002f000 f |
| 47 4:bs_data 001f064000 0000000000 0000001000 f |
| 48 3:bs_code 001f065000 0000000000 0000005000 f |
| 49 4:bs_data 001f06a000 0000000000 0000005000 f |
| 50 3:bs_code 001f06f000 0000000000 0000007000 f |
| 51 4:bs_data 001f076000 0000000000 0000007000 f |
| 52 3:bs_code 001f07d000 0000000000 000000d000 f |
| 53 4:bs_data 001f08a000 0000000000 0000001000 f |
| 54 3:bs_code 001f08b000 0000000000 0000006000 f |
| 55 4:bs_data 001f091000 0000000000 0000004000 f |
| 56 3:bs_code 001f095000 0000000000 000000d000 f |
| 57 4:bs_data 001f0a2000 0000000000 0000003000 f |
| 58 3:bs_code 001f0a5000 0000000000 0000026000 f |
| 59 4:bs_data 001f0cb000 0000000000 0000005000 f |
| 60 3:bs_code 001f0d0000 0000000000 0000019000 f |
| 61 4:bs_data 001f0e9000 0000000000 0000004000 f |
| 62 3:bs_code 001f0ed000 0000000000 0000024000 f |
| 63 4:bs_data 001f111000 0000000000 0000008000 f |
| 64 3:bs_code 001f119000 0000000000 000000b000 f |
| 65 4:bs_data 001f124000 0000000000 0000001000 f |
| 66 3:bs_code 001f125000 0000000000 0000002000 f |
| 67 4:bs_data 001f127000 0000000000 0000002000 f |
| 68 3:bs_code 001f129000 0000000000 0000009000 f |
| 69 4:bs_data 001f132000 0000000000 0000003000 f |
| 70 3:bs_code 001f135000 0000000000 0000005000 f |
| 71 4:bs_data 001f13a000 0000000000 0000003000 f |
| 72 3:bs_code 001f13d000 0000000000 0000005000 f |
| 73 4:bs_data 001f142000 0000000000 0000003000 f |
| 74 3:bs_code 001f145000 0000000000 0000011000 f |
| 75 4:bs_data 001f156000 0000000000 000000b000 f |
| 76 3:bs_code 001f161000 0000000000 0000009000 f |
| 77 4:bs_data 001f16a000 0000000000 0000400000 f |
| 78 3:bs_code 001f56a000 0000000000 0000006000 f |
| 79 4:bs_data 001f570000 0000000000 0000001000 f |
| 80 3:bs_code 001f571000 0000000000 0000001000 f |
| 81 4:bs_data 001f572000 0000000000 0000002000 f |
| 82 3:bs_code 001f574000 0000000000 0000017000 f |
| 83 4:bs_data 001f58b000 0000000000 0000364000 f |
| 84 6:rt_data 001f8ef000 0000000000 0000100000 rf |
| 85 5:rt_code 001f9ef000 0000000000 0000100000 rf |
| 86 0:reserved 001faef000 0000000000 0000080000 f |
| 87 9:acpi_reclaim 001fb6f000 0000000000 0000010000 f |
| 88 a:acpi_nvs 001fb7f000 0000000000 0000080000 f |
| 89 4:bs_data 001fbff000 0000000000 0000201000 f |
| 90 7:conv 001fe00000 0000000000 00000e8000 f |
| 91 4:bs_data 001fee8000 0000000000 0000020000 f |
| 92 3:bs_code 001ff08000 0000000000 0000026000 f |
| 93 4:bs_data 001ff2e000 0000000000 0000009000 f |
| 94 3:bs_code 001ff37000 0000000000 0000021000 f |
| 95 6:rt_data 001ff58000 0000000000 0000020000 rf |
| 96 a:acpi_nvs 001ff78000 0000000000 0000088000 f |
| <gap> 0020000000 0090000000 |
| 97 0:reserved 00b0000000 0000000000 0010000000 1 |
| |
| Attributes key: |
| f: uncached, write-coalescing, write-through, write-back |
| rf: uncached, write-coalescing, write-through, write-back, needs runtime mapping |
| 1: uncached |
| |
| |
| => efi tables |
| 000000001f8edf98 ee4e5898-3914-4259-9d6e-dc7bd79403cf EFI_LZMA_COMPRESSED |
| 000000001ff2ace0 05ad34ba-6f02-4214-952e-4da0398e2bb9 EFI_DXE_SERVICES |
| 000000001f8ea018 7739f24c-93d7-11d4-9a3a-0090273fc14d EFI_HOB_LIST |
| 000000001ff2bac0 4c19049f-4137-4dd3-9c10-8b97a83ffdfa EFI_MEMORY_TYPE |
| 000000001ff2cb10 49152e77-1ada-4764-b7a2-7afefed95e8b (unknown) |
| 000000001f9ac018 060cc026-4c0d-4dda-8f41-595fef00a502 EFI_MEM_STATUS_CODE_REC |
| 000000001f9ab000 eb9d2d31-2d88-11d3-9a16-0090273fc14d SMBIOS table |
| 000000001fb7e000 eb9d2d30-2d88-11d3-9a16-0090273fc14d EFI_GUID_EFI_ACPI1 |
| 000000001fb7e014 8868e871-e4f1-11d3-bc22-0080c73c8881 ACPI table |
| 000000001e654018 dcfa911d-26eb-469f-a220-38b7dc461220 (unknown) |