@@ -8,6 +8,8 @@
#include <charset.h>
#include <command.h>
#include <dm/device.h>
+#include <dm/uclass.h>
+#include <efi.h>
#include <efi_device_path.h>
#include <efi_dt_fixup.h>
#include <efi_load_initrd.h>
@@ -1604,6 +1606,43 @@ static int do_efi_test(struct cmd_tbl *cmdtp, int flag,
return cp->cmd(cmdtp, flag, argc, argv);
}
+/**
+ * do_efi_show_media() - show EFI media devices
+ *
+ * @cmdtp: Command table
+ * @flag: Command flag
+ * @argc: Number of arguments
+ * @argv: Argument array
+ * Return: CMD_RET_SUCCESS on success, CMD_RET_FAILURE on failure
+ *
+ * Implement efidebug "media" sub-command.
+ * Show all EFI media devices and their device paths.
+ */
+static int do_efi_show_media(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_EFI_MEDIA, &uc);
+ if (ret) {
+ printf("Cannot get EFI media uclass: (err=%dE)\n", ret);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Device Device Path\n");
+ printf("------------------- -----------\n");
+
+ uclass_foreach_dev(dev, uc) {
+ struct efi_media_plat *plat = dev_get_plat(dev);
+
+ printf("%-20s %pD\n", dev->name, plat->device_path);
+ }
+
+ return CMD_RET_SUCCESS;
+}
+
/**
* do_efi_query_info() - QueryVariableInfo EFI service
*
@@ -1670,6 +1709,8 @@ static struct cmd_tbl cmd_efidebug_sub[] = {
U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images,
"", ""),
U_BOOT_CMD_MKENT(log, CONFIG_SYS_MAXARGS, 1, do_efi_show_log, "", ""),
+ U_BOOT_CMD_MKENT(media, CONFIG_SYS_MAXARGS, 1, do_efi_show_media,
+ "", ""),
U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap,
"", ""),
U_BOOT_CMD_MKENT(tables, CONFIG_SYS_MAXARGS, 1, do_efi_show_tables,
@@ -1772,6 +1813,8 @@ U_BOOT_LONGHELP(efidebug,
" - show loaded images\n"
"efidebug log\n"
" - show UEFI log\n"
+ "efidebug media\n"
+ " - show EFI media devices\n"
"efidebug memmap\n"
" - show UEFI memory map\n"
"efidebug tables\n"
@@ -14,6 +14,7 @@ Synopsis
::
efidebug log
+ efidebug media
Description
-----------
@@ -21,7 +22,7 @@ Description
The *efidebug* command provides access to debugging features for the EFI-loader
subsystem.
-Only one of the subcommands are documented at present.
+Only two of the subcommands are documented at present.
efidebug log
~~~~~~~~~~~~
@@ -30,10 +31,28 @@ This shows a log of EFI boot-services calls which have been handled since U-Boot
started. This can be useful to see what the app is doing, or even what U-Boot
itself has called.
+efidebug media
+~~~~~~~~~~~~~~
+
+This shows a list of all EFI media devices and their corresponding device paths.
+Each EFI media device represents a block device that was discovered through EFI
+boot services, such as hard drives, USB storage, or other bootable media. The
+device path shows the EFI device path for each device, which can be useful for
+debugging boot issues or understanding the system topology.
+
Example
-------
+This shows checking the EFI media devices::
+
+ => efidebug media
+ Device Device Path
+ ------ -----------
+ efi_media_1 PciRoot(0x0)/Pci(0x3,0x0)/Sata(0x0,0xFFFF,0x0)
+ efi_media_2 PciRoot(0x0)/Pci(0x5,0x0)
+
+
This shows checking the log, then using 'efidebug tables' to fully set up the
EFI-loader subsystem, then checking the log again::