efi/libstub/arm: default EFI_ARMSTUB_DTB_LOADER to y

Default EFI_ARMSTUB_DTB_LOADER to y to allow the dtb= command
line parameter to function with efi loader.

Required for development purposes and to boot on existing bootloaders
that do not support devicetree provided by the firmware or by the
bootloader.

Fixes: 3d7ee348aa41 ("efi/libstub/arm: Add opt-in Kconfig option ...")
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index d8e159feb573f1a6cdc171bc90b5948b72cc45bd..89110dfc7127c5f13d3b8fbdf29a10507d6f16d4 100644 (file)
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -90,14 +90,17 @@ config EFI_ARMSTUB
 config EFI_ARMSTUB_DTB_LOADER
        bool "Enable the DTB loader"
        depends on EFI_ARMSTUB
+       default y
        help
          Select this config option to add support for the dtb= command
          line parameter, allowing a device tree blob to be loaded into
          memory from the EFI System Partition by the stub.
 
-         The device tree is typically provided by the platform or by
-         the bootloader, so this option is mostly for development
-         purposes only.
+         If the device tree is provided by the platform or by
+         the bootloader this option may not be needed.
+         But, for various development reasons and to maintain existing
+         functionality for bootloaders that do not have such support
+         this option is necessary.
 
 config EFI_BOOTLOADER_CONTROL
        tristate "EFI Bootloader Control"