crypto: Kconfig - move powerpc entries to a submenu

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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 77 insertions, 0 deletions

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