[PATCH v15 13/28] x86: Secure Launch Kconfig

Ross Philipson
2025-12-15T23:41:21Z

Add a Kconfig option for compiling in/out the Secure Launch feature.
Secure Launch is controlled by a singel boolean on/off.

Signed-off-by: Ross Philipson <ross.philipson@oracle.com>
---
arch/x86/Kconfig | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fa3b616af03a..9404d207c420 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1975,6 +1975,20 @@ config EFI_RUNTIME_MAP

See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.

+config SECURE_LAUNCH
+ bool "Secure Launch DRTM support"
+ depends on X86_64 && X86_X2APIC && TCG_TIS && TCG_CRB
+ select CRYPTO_LIB_SHA1
+ select CRYPTO_LIB_SHA256
+ help
+ The Secure Launch feature allows a kernel to be launched directly
+ through a vendor neutral DTRM (Dynamic Root of Trust for Measurement)
+ solution, with Intel TXT being one example. The DRTM establishes an
+ environment where the CPU measures the kernel image, employing the TPM,
+ before starting it. Secure Launch then continues the measurement chain
+ over kernel configuration information and other launch artifacts (e.g.
+ any initramfs image).
+
source "kernel/Kconfig.hz"

config ARCH_SUPPORTS_KEXEC
--
2.43.7