crypto: Kconfig - submenus for arm and arm64

Move ARM- and ARM64-accelerated menus into a submenu under
the Crypto API menu (paralleling all the architectures).

Make each submenu always appear if the corresponding architecture
is supported. Get rid of the ARM_CRYPTO and ARM64_CRYPTO symbols.

The "ARM Accelerated" or "ARM64 Accelerated" entry disappears from:
    General setup  --->
    Platform selection  --->
    Kernel Features  --->
    Boot options  --->
    Power management options  --->
    CPU Power Management  --->
[*] ACPI (Advanced Configuration and Power Interface) Support  --->
[*] Virtualization  --->
[*] ARM Accelerated Cryptographic Algorithms  --->
     (or)
[*] ARM64 Accelerated Cryptographic Algorithms  --->
    ...
-*- Cryptographic API  --->
    Library routines  --->
    Kernel hacking  --->

and moves into the Cryptographic API menu, which now contains:
      ...
      Accelerated Cryptographic Algorithms for CPU (arm) --->
      (or)
      Accelerated Cryptographic Algorithms for CPU (arm64) --->
[*]   Hardware crypto devices  --->
      ...
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>

arch/arm/Kconfig

@@ -1921,8 +1921,4 @@ config ARCH_HIBERNATION_POSSIBLE
 
 endmenu
 
-if CRYPTO
-source "arch/arm/crypto/Kconfig"
-endif
-
 source "arch/arm/Kconfig.assembler"

arch/arm/configs/exynos_defconfig

@@ -32,7 +32,6 @@ CONFIG_KERNEL_MODE_NEON=y
 CONFIG_PM_DEBUG=y
 CONFIG_PM_ADVANCED_DEBUG=y
 CONFIG_ENERGY_MODEL=y
-CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM_NEON=m
 CONFIG_CRYPTO_SHA256_ARM=m
 CONFIG_CRYPTO_SHA512_ARM=m

arch/arm/configs/milbeaut_m10v_defconfig

@@ -44,7 +44,6 @@ CONFIG_ARM_CPUIDLE=y
 CONFIG_VFP=y
 CONFIG_NEON=y
 CONFIG_KERNEL_MODE_NEON=y
-CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM_NEON=m
 CONFIG_CRYPTO_SHA1_ARM_CE=m
 CONFIG_CRYPTO_SHA2_ARM_CE=m

arch/arm/configs/multi_v7_defconfig

@@ -132,7 +132,6 @@ CONFIG_ARM_EXYNOS_CPUIDLE=y
 CONFIG_ARM_TEGRA_CPUIDLE=y
 CONFIG_ARM_QCOM_SPM_CPUIDLE=y
 CONFIG_KERNEL_MODE_NEON=y
-CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM_NEON=m
 CONFIG_CRYPTO_SHA1_ARM_CE=m
 CONFIG_CRYPTO_SHA2_ARM_CE=m

arch/arm/configs/omap2plus_defconfig

@@ -53,7 +53,6 @@ CONFIG_CPU_IDLE=y
 CONFIG_ARM_CPUIDLE=y
 CONFIG_KERNEL_MODE_NEON=y
 CONFIG_PM_DEBUG=y
-CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM_NEON=m
 CONFIG_CRYPTO_SHA256_ARM=m
 CONFIG_CRYPTO_SHA512_ARM=m

arch/arm/configs/pxa_defconfig

@@ -34,7 +34,6 @@ CONFIG_CPUFREQ_DT=m
 CONFIG_ARM_PXA2xx_CPUFREQ=m
 CONFIG_CPU_IDLE=y
 CONFIG_ARM_CPUIDLE=y
-CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM=m
 CONFIG_CRYPTO_SHA256_ARM=m
 CONFIG_CRYPTO_SHA512_ARM=m

arch/arm/crypto/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 
-menuconfig ARM_CRYPTO
-	bool "ARM Accelerated Cryptographic Algorithms"
-	depends on ARM
-	help
-	  Say Y here to choose from a selection of cryptographic algorithms
-	  implemented using ARM specific CPU features or instructions.
-
-if ARM_CRYPTO
+menu "Accelerated Cryptographic Algorithms for CPU (arm)"
 
 config CRYPTO_SHA1_ARM
 	tristate "SHA1 digest algorithm (ARM-asm)"
@@ -170,4 +163,4 @@ config CRYPTO_CURVE25519_NEON
 	select CRYPTO_LIB_CURVE25519_GENERIC
 	select CRYPTO_ARCH_HAVE_LIB_CURVE25519
 
-endif
+endmenu

arch/arm64/Kconfig

@@ -2215,6 +2215,3 @@ source "drivers/acpi/Kconfig"
 
 source "arch/arm64/kvm/Kconfig"
 
-if CRYPTO
-source "arch/arm64/crypto/Kconfig"
-endif # CRYPTO

arch/arm64/configs/defconfig

@@ -109,7 +109,6 @@ CONFIG_ACPI_APEI_MEMORY_FAILURE=y
 CONFIG_ACPI_APEI_EINJ=y
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM=y
-CONFIG_ARM64_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM64_CE=y
 CONFIG_CRYPTO_SHA2_ARM64_CE=y
 CONFIG_CRYPTO_SHA512_ARM64_CE=m

arch/arm64/crypto/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 
-menuconfig ARM64_CRYPTO
-	bool "ARM64 Accelerated Cryptographic Algorithms"
-	depends on ARM64
-	help
-	  Say Y here to choose from a selection of cryptographic algorithms
-	  implemented using ARM64 specific CPU features or instructions.
-
-if ARM64_CRYPTO
+menu "Accelerated Cryptographic Algorithms for CPU (arm64)"
 
 config CRYPTO_SHA256_ARM64
 	tristate "SHA-224/SHA-256 digest algorithm for arm64"
@@ -138,4 +131,4 @@ config CRYPTO_AES_ARM64_BS
 	select CRYPTO_AES_ARM64_NEON_BLK
 	select CRYPTO_LIB_AES
 
-endif
+endmenu

crypto/Kconfig

@@ -1292,6 +1292,12 @@ config CRYPTO_STATS
 config CRYPTO_HASH_INFO
 	bool
 
+if ARM
+source "arch/arm/crypto/Kconfig"
+endif
+if ARM64
+source "arch/arm64/crypto/Kconfig"
+endif
 if MIPS
 source "arch/mips/crypto/Kconfig"
 endif

drivers/crypto/Kconfig

@@ -802,7 +802,6 @@ source "drivers/crypto/amlogic/Kconfig"
 config CRYPTO_DEV_SA2UL
 	tristate "Support for TI security accelerator"
 	depends on ARCH_K3 || COMPILE_TEST
-	select ARM64_CRYPTO
 	select CRYPTO_AES
 	select CRYPTO_ALGAPI
 	select CRYPTO_AUTHENC

drivers/net/Kconfig

@@ -85,8 +85,6 @@ config WIREGUARD
 	select CRYPTO_POLY1305_X86_64 if X86 && 64BIT
 	select CRYPTO_BLAKE2S_X86 if X86 && 64BIT
 	select CRYPTO_CURVE25519_X86 if X86 && 64BIT
-	select ARM_CRYPTO if ARM
-	select ARM64_CRYPTO if ARM64
 	select CRYPTO_CHACHA20_NEON if ARM || (ARM64 && KERNEL_MODE_NEON)
 	select CRYPTO_POLY1305_NEON if ARM64 && KERNEL_MODE_NEON
 	select CRYPTO_POLY1305_ARM if ARM