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From:   Robert Elliott <elliott@hpe.com>
To:     herbert@gondor.apana.org.au, davem@davemloft.net,
        ebiggers@kernel.org, linux-crypto@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     Robert Elliott <elliott@hpe.com>
Subject: [PATCH v2 02/10] crypto: Kconfig - move powerpc entries to a submenu
Date:   Wed, 17 Aug 2022 18:20:49 -0500
Message-Id: <20220817232057.73643-3-elliott@hpe.com>
In-Reply-To: <20220817232057.73643-1-elliott@hpe.com>
References: <20220815190608.47182-9-elliott@hpe.com>
 <20220817232057.73643-1-elliott@hpe.com>
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Move CPU-specific crypto/Kconfig entries to arch/xxx/crypto/Kconfig
and create a submenu for them under the Crypto API menu.

Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Robert Elliott <elliott@hpe.com>
---
 arch/powerpc/crypto/Kconfig | 77 +++++++++++++++++++++++++++++++++++++
 crypto/Kconfig              | 76 ++----------------------------------
 2 files changed, 80 insertions(+), 73 deletions(-)
 create mode 100644 arch/powerpc/crypto/Kconfig

diff --git a/arch/powerpc/crypto/Kconfig b/arch/powerpc/crypto/Kconfig
new file mode 100644
index 000000000000..74f535940faa
--- /dev/null
+++ b/arch/powerpc/crypto/Kconfig
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: GPL-2.0
+
+menu "Accelerated Cryptographic Algorithms for CPU (powerpc)"
+
+config CRYPTO_CRC32C_VPMSUM
+	tristate "CRC32c CRC algorithm (powerpc64)"
+	depends on PPC64 && ALTIVEC
+	select CRYPTO_HASH
+	select CRC32
+	help
+	  CRC32c algorithm implemented using vector polynomial multiply-sum
+	  (vpmsum) instructions, introduced in POWER8. Enable on POWER8
+	  and newer processors for improved performance.
+
+config CRYPTO_CRCT10DIF_VPMSUM
+	tristate "CRC32T10DIF powerpc64 hardware acceleration"
+	depends on PPC64 && ALTIVEC && CRC_T10DIF
+	select CRYPTO_HASH
+	help
+	  CRC10T10DIF algorithm implemented using vector polynomial
+	  multiply-sum (vpmsum) instructions, introduced in POWER8. Enable on
+	  POWER8 and newer processors for improved performance.
+
+config CRYPTO_VPMSUM_TESTER
+	tristate "Powerpc64 vpmsum hardware acceleration tester"
+	depends on CRYPTO_CRCT10DIF_VPMSUM && CRYPTO_CRC32C_VPMSUM
+	help
+	  Stress test for CRC32c and CRC-T10DIF algorithms implemented with
+	  POWER8 vpmsum instructions.
+	  Unless you are testing these algorithms, you don't need this.
+
+config CRYPTO_MD5_PPC
+	tristate "MD5 digest algorithm (PPC)"
+	depends on PPC
+	select CRYPTO_HASH
+	help
+	  MD5 message digest algorithm (RFC1321) implemented
+	  in PPC assembler.
+
+config CRYPTO_SHA1_PPC
+	tristate "SHA1 digest algorithm (powerpc)"
+	depends on PPC
+	help
+	  This is the powerpc hardware accelerated implementation of the
+	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
+
+config CRYPTO_SHA1_PPC_SPE
+	tristate "SHA1 digest algorithm (PPC SPE)"
+	depends on PPC && SPE
+	help
+	  SHA-1 secure hash standard (DFIPS 180-4) implemented
+	  using powerpc SPE SIMD instruction set.
+
+config CRYPTO_SHA256_PPC_SPE
+	tristate "SHA224 and SHA256 digest algorithm (PPC SPE)"
+	depends on PPC && SPE
+	select CRYPTO_SHA256
+	select CRYPTO_HASH
+	help
+	  SHA224 and SHA256 secure hash standard (DFIPS 180-2)
+	  implemented using powerpc SPE SIMD instruction set.
+
+config CRYPTO_AES_PPC_SPE
+	tristate "AES cipher algorithms (PPC SPE)"
+	depends on PPC && SPE
+	select CRYPTO_SKCIPHER
+	help
+	  AES cipher algorithms (FIPS-197). Additionally the acceleration
+	  for popular block cipher modes ECB, CBC, CTR and XTS is supported.
+	  This module should only be used for low power (router) devices
+	  without hardware AES acceleration (e.g. caam crypto). It reduces the
+	  size of the AES tables from 16KB to 8KB + 256 bytes and mitigates
+	  timining attacks. Nevertheless it might be not as secure as other
+	  architecture specific assembler implementations that work on 1KB
+	  tables or 256 bytes S-boxes.
+
+endmenu
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a236a859358b..efb73dae2e52 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -617,17 +617,6 @@ menuconfig CRYPTO
 	  gain performance compared with software implementation.
 	  Module will be crc32c-intel.
 
-config CRYPTO_CRC32C_VPMSUM
-	tristate "CRC32c CRC algorithm (powerpc64)"
-	depends on PPC64 && ALTIVEC
-	select CRYPTO_HASH
-	select CRC32
-	help
-	  CRC32c algorithm implemented using vector polynomial multiply-sum
-	  (vpmsum) instructions, introduced in POWER8. Enable on POWER8
-	  and newer processors for improved performance.
-
-
 config CRYPTO_CRC32C_SPARC64
 	tristate "CRC32c CRC algorithm (SPARC64)"
 	depends on SPARC64
@@ -739,28 +728,11 @@ menuconfig CRYPTO
 	  'crct10dif-pclmul' module, which is faster when computing the
 	  crct10dif checksum as compared with the generic table implementation.
 
-config CRYPTO_CRCT10DIF_VPMSUM
-	tristate "CRC32T10DIF powerpc64 hardware acceleration"
-	depends on PPC64 && ALTIVEC && CRC_T10DIF
-	select CRYPTO_HASH
-	help
-	  CRC10T10DIF algorithm implemented using vector polynomial
-	  multiply-sum (vpmsum) instructions, introduced in POWER8. Enable on
-	  POWER8 and newer processors for improved performance.
-
 config CRYPTO_CRC64_ROCKSOFT
 	tristate "Rocksoft Model CRC64 algorithm"
 	depends on CRC64
 	select CRYPTO_HASH
 
-config CRYPTO_VPMSUM_TESTER
-	tristate "Powerpc64 vpmsum hardware acceleration tester"
-	depends on CRYPTO_CRCT10DIF_VPMSUM && CRYPTO_CRC32C_VPMSUM
-	help
-	  Stress test for CRC32c and CRC-T10DIF algorithms implemented with
-	  POWER8 vpmsum instructions.
-	  Unless you are testing these algorithms, you don't need this.
-
 config CRYPTO_GHASH
 	tristate "GHASH hash function"
 	select CRYPTO_GF128MUL
@@ -805,14 +777,6 @@ menuconfig CRYPTO
 	help
 	  MD5 message digest algorithm (RFC1321).
 
-config CRYPTO_MD5_PPC
-	tristate "MD5 digest algorithm (PPC)"
-	depends on PPC
-	select CRYPTO_HASH
-	help
-	  MD5 message digest algorithm (RFC1321) implemented
-	  in PPC assembler.
-
 config CRYPTO_MD5_SPARC64
 	tristate "MD5 digest algorithm (SPARC64)"
 	depends on SPARC64
@@ -907,20 +871,6 @@ menuconfig CRYPTO
 	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
 	  using sparc64 crypto instructions, when available.
 
-config CRYPTO_SHA1_PPC
-	tristate "SHA1 digest algorithm (powerpc)"
-	depends on PPC
-	help
-	  This is the powerpc hardware accelerated implementation of the
-	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
-
-config CRYPTO_SHA1_PPC_SPE
-	tristate "SHA1 digest algorithm (PPC SPE)"
-	depends on PPC && SPE
-	help
-	  SHA-1 secure hash standard (DFIPS 180-4) implemented
-	  using powerpc SPE SIMD instruction set.
-
 config CRYPTO_SHA1_S390
 	tristate "SHA1 digest algorithm"
 	depends on S390
@@ -944,15 +894,6 @@ menuconfig CRYPTO
 	  This code also includes SHA-224, a 224 bit hash with 112 bits
 	  of security against collision attacks.
 
-config CRYPTO_SHA256_PPC_SPE
-	tristate "SHA224 and SHA256 digest algorithm (PPC SPE)"
-	depends on PPC && SPE
-	select CRYPTO_SHA256
-	select CRYPTO_HASH
-	help
-	  SHA224 and SHA256 secure hash standard (DFIPS 180-2)
-	  implemented using powerpc SPE SIMD instruction set.
-
 config CRYPTO_SHA256_SPARC64
 	tristate "SHA224 and SHA256 digest algorithm (SPARC64)"
 	depends on SPARC64
@@ -1194,20 +1135,6 @@ menuconfig CRYPTO
 	  for some popular block cipher mode is supported too, including
 	  ECB and CBC.
 
-config CRYPTO_AES_PPC_SPE
-	tristate "AES cipher algorithms (PPC SPE)"
-	depends on PPC && SPE
-	select CRYPTO_SKCIPHER
-	help
-	  AES cipher algorithms (FIPS-197). Additionally the acceleration
-	  for popular block cipher modes ECB, CBC, CTR and XTS is supported.
-	  This module should only be used for low power (router) devices
-	  without hardware AES acceleration (e.g. caam crypto). It reduces the
-	  size of the AES tables from 16KB to 8KB + 256 bytes and mitigates
-	  timining attacks. Nevertheless it might be not as secure as other
-	  architecture specific assembler implementations that work on 1KB
-	  tables or 256 bytes S-boxes.
-
 config CRYPTO_AES_S390
 	tristate "AES cipher algorithms"
 	depends on S390
@@ -2020,6 +1947,9 @@ menuconfig CRYPTO_DRBG_MENU
 if MIPS
 source "arch/mips/crypto/Kconfig"
 endif
+if PPC
+source "arch/powerpc/crypto/Kconfig"
+endif
 
 source "drivers/crypto/Kconfig"
 source "crypto/asymmetric_keys/Kconfig"
-- 
2.37.1