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[v7,03/13] x86: Secure Launch Kconfig

Message ID 20231110222751.219836-4-ross.philipson@oracle.com
State New
Headers show
Series x86: Trenchboot secure dynamic launch Linux kernel support | expand

Commit Message

Ross Philipson Nov. 10, 2023, 10:27 p.m. UTC 
Initial bits to bring in Secure Launch functionality. Add Kconfig
options for compiling in/out the Secure Launch code.

Signed-off-by: Ross Philipson <ross.philipson@oracle.com>
---
 arch/x86/Kconfig | 12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3762f41bb092..1b983e336611 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2066,6 +2066,18 @@  config EFI_RUNTIME_MAP
 
 	  See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.
 
+config SECURE_LAUNCH
+	bool "Secure Launch support"
+	default n
+	depends on X86_64 && X86_X2APIC
+	help
+	   The Secure Launch feature allows a kernel to be loaded
+	   directly through an Intel TXT measured launch. Intel TXT
+	   establishes a Dynamic Root of Trust for Measurement (DRTM)
+	   where the CPU measures the kernel image. This feature then
+	   continues the measurement chain over kernel configuration
+	   information and init images.
+
 source "kernel/Kconfig.hz"
 
 config ARCH_SUPPORTS_KEXEC