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Fri, 15 Nov 2024 00:46:33 -0500 (EST) From: Alistair Francis To: lukas@wunner.de, Jonathan.Cameron@huawei.com, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, akpm@linux-foundation.org, bhelgaas@google.com, linux-pci@vger.kernel.org, linux-cxl@vger.kernel.org Cc: bjorn3_gh@protonmail.com, ojeda@kernel.org, tmgross@umich.edu, boqun.feng@gmail.com, benno.lossin@proton.me, a.hindborg@kernel.org, wilfred.mallawa@wdc.com, alistair23@gmail.com, alex.gaynor@gmail.com, gary@garyguo.net, aliceryhl@google.com, Alistair Francis Subject: [RFC 2/6] drivers: pci: Change CONFIG_SPDM to a dependency Date: Fri, 15 Nov 2024 15:46:12 +1000 Message-ID: <20241115054616.1226735-3-alistair@alistair23.me> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115054616.1226735-1-alistair@alistair23.me> References: <20241115054616.1226735-1-alistair@alistair23.me> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- 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.