[RFC 2/6] drivers: pci: Change CONFIG_SPDM to a dependency

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In preparation for adding a Rust SPDM library change SPDM to a
dependency so that the user can select which SPDM library to use at
build time.

Signed-off-by: Alistair Francis <alistair@xxxxxxxxxxxxx>
---
 drivers/pci/Kconfig |  2 +-
 lib/Kconfig         | 30 +++++++++++++++---------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index f1c39a6477a5..690a2a38cb52 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -128,7 +128,7 @@ config PCI_CMA
 	select CRYPTO_SHA256
 	select CRYPTO_SHA512
 	select PCI_DOE
-	select SPDM
+	depends on SPDM
 	help
 	  Authenticate devices on enumeration per PCIe r6.2 sec 6.31.
 	  A PCI DOE mailbox is used as transport for DMTF SPDM based
diff --git a/lib/Kconfig b/lib/Kconfig
index 68f46e4a72a6..4db9bc8e29f8 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -739,6 +739,21 @@ config LWQ_TEST
 	help
           Run boot-time test of light-weight queuing.
 
+config SPDM
+	bool "SPDM"
+	select CRYPTO
+	select KEYS
+	select ASYMMETRIC_KEY_TYPE
+	select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
+	select X509_CERTIFICATE_PARSER
+	help
+	  The Security Protocol and Data Model (SPDM) allows for device
+	  authentication, measurement, key exchange and encrypted sessions.
+
+	  Crypto algorithms negotiated with SPDM are limited to those enabled
+	  in .config.  Drivers selecting SPDM therefore need to also select
+	  any algorithms they deem mandatory.
+
 endmenu
 
 config GENERIC_IOREMAP
@@ -777,18 +792,3 @@ config POLYNOMIAL
 
 config FIRMWARE_TABLE
 	bool
-
-config SPDM
-	tristate
-	select CRYPTO
-	select KEYS
-	select ASYMMETRIC_KEY_TYPE
-	select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
-	select X509_CERTIFICATE_PARSER
-	help
-	  The Security Protocol and Data Model (SPDM) allows for device
-	  authentication, measurement, key exchange and encrypted sessions.
-
-	  Crypto algorithms negotiated with SPDM are limited to those enabled
-	  in .config.  Drivers selecting SPDM therefore need to also select
-	  any algorithms they deem mandatory.
-- 
2.47.0





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