efi_loader: Make HII a config option

Heinrich ran into issues with HII and iPXE which lead to #SErrors on
his Odroid-C2 system. We definitely do not want to regress just yet,
so let's not expose the HII protocols by default.

Instead, let's make it a config option that people can play with
This way, we can stabilize the code in tree without breaking any
users.

Once someone figures out, why this breaks iPXE (probably a NULL
dereference), we can enable it by default.

Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

---

v1 -> v2:

  - Remove HII selftest as well

v2 -> v3:

  - Make config option

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index f5de005ff8..23487b8130 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -34,3 +34,18 @@ config EFI_LOADER_BOUNCE_BUFFER
 	  Some hardware does not support DMA to full 64bit addresses. For this
 	  hardware we can create a bounce buffer so that payloads don't have to
 	  worry about platform details.
+
+config EFI_LOADER_HII
+	bool "Expose HII protocols to EFI applications"
+	depends on EFI_LOADER
+	default n
+	help
+	  The Human Interface Infrastructure is a complicated framework that
+	  allows UEFI applications to draw fancy menus and hook strings using
+	  a translation framework.
+
+	  U-Boot implements enough of its features to be able to run the UEFI
+	  Shell, but not more than that. The code is experimental still, so
+	  beware that your system might break with HII enabled.
+
+	  If unsure, say n.