On 3/10/23 21:49, Simon Glass wrote:
Add a command (for the app and payload) to display the tables provided
by EFI.
Signed-off-by: Simon Glass <s...@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;
Wouldn't U-Boot have failed earlier if there is no system table?
Best regards
Heinrich
+ }
+ }
+
+ 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)
