Add a command (for the app and payload) to display the tables provided by EFI.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: - Make use of common code
cmd/Makefile | 2 +- cmd/efi.c | 33 ++++++++++++++++++++++++++++++++- doc/usage/cmd/efi.rst | 22 ++++++++++++++++++++++ 3 files changed, 55 insertions(+), 2 deletions(-)
diff --git a/cmd/Makefile b/cmd/Makefile index 1c5c6f3c00c..a0bfa2acefe 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -62,7 +62,7 @@ obj-$(CONFIG_CMD_EXTENSION) += extension_board.o obj-$(CONFIG_CMD_ECHO) += echo.o obj-$(CONFIG_ENV_IS_IN_EEPROM) += eeprom.o obj-$(CONFIG_CMD_EEPROM) += eeprom.o -obj-$(CONFIG_EFI) += efi.o +obj-$(CONFIG_EFI) += efi.o efi_common.o obj-$(CONFIG_CMD_EFIDEBUG) += efidebug.o efi_common.o obj-$(CONFIG_CMD_EFICONFIG) += eficonfig.o ifdef CONFIG_CMD_EFICONFIG diff --git a/cmd/efi.c b/cmd/efi.c index c0384e0db28..4d0edfa7f27 100644 --- a/cmd/efi.c +++ b/cmd/efi.c @@ -7,10 +7,12 @@ #include <common.h> #include <command.h> #include <efi.h> +#include <efi_api.h> #include <errno.h> #include <log.h> #include <malloc.h> #include <sort.h> +#include <uuid.h> #include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR; @@ -273,8 +275,36 @@ done: return ret ? CMD_RET_FAILURE : 0; }
+static int do_efi_tables(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct efi_system_table *systab; + + if (IS_ENABLED(CONFIG_EFI_APP)) { + systab = efi_get_sys_table(); + if (!systab) { + printf("Cannot read system table\n"); + return CMD_RET_FAILURE; + } + } else { + int size; + int ret; + + ret = efi_info_get(EFIET_SYS_TABLE, (void **)&systab, &size); + if (ret) { + printf("Cannot find EFI system table (err=%d)\n", ret); + return CMD_RET_FAILURE; + } + } + + efi_show_tables(systab); + + return 0; +} + static struct cmd_tbl efi_commands[] = { U_BOOT_CMD_MKENT(mem, 1, 1, do_efi_mem, "", ""), + U_BOOT_CMD_MKENT(tables, 1, 1, do_efi_tables, "", ""), };
static int do_efi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) @@ -298,5 +328,6 @@ static int do_efi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) U_BOOT_CMD( efi, 3, 1, do_efi, "EFI access", - "mem [all] Dump memory information [include boot services]" + "mem [all] Dump memory information [include boot services]\n" + "tables Dump tables" ); diff --git a/doc/usage/cmd/efi.rst b/doc/usage/cmd/efi.rst index c029c423879..ef37ff2f4c1 100644 --- a/doc/usage/cmd/efi.rst +++ b/doc/usage/cmd/efi.rst @@ -10,6 +10,7 @@ Synopsis ::
efi mem [all] + efi tables
Description ----------- @@ -54,6 +55,14 @@ 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 -------
@@ -195,3 +204,16 @@ Example 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)