[PATCH v4 02/16] efi_loader: add CONFIG_EFI_SECURE_BOOT config option

[AKASHI Takahiro]

Under this configuration, UEFI secure boot support will be added
in later patches.

Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
---
 lib/efi_loader/Kconfig | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index c7027a967653..d1c092a1d80a 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -115,4 +115,23 @@ config EFI_GRUB_ARM32_WORKAROUND
 	  GRUB prior to version 2.04 requires U-Boot to disable caches. This
 	  workaround currently is also needed on systems with caches that
 	  cannot be managed via CP15.
+
+config EFI_SECURE_BOOT
+	bool "Enable EFI secure boot support"
+	depends on EFI_LOADER
+	select SHA256
+	select RSA
+	select RSA_VERIFY_WITH_PKEY
+	select IMAGE_SIGN_INFO
+	select ASYMMETRIC_KEY_TYPE
+	select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
+	select X509_CERTIFICATE_PARSER
+	select PKCS7_MESSAGE_PARSER
+	default n
+	help
+	  Select this option to enable EFI secure boot support.
+	  Once SecureBoot mode is enforced, any EFI binary can run only if
+	  it is signed with a trusted key. To do that, you need to install,
+	  at least, PK, KEK and db.
+
 endif
-- 
2.24.0