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-rw-r--r--drivers/crypto/Kconfig45
1 files changed, 38 insertions, 7 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 4263935443cc..adb554153f67 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -2,22 +2,53 @@ menu "Hardware crypto devices"
config CRYPTO_DEV_PADLOCK
tristate "Support for VIA PadLock ACE"
- depends on CRYPTO && X86_32
+ depends on X86_32
+ select CRYPTO_ALGAPI
+ default m
help
Some VIA processors come with an integrated crypto engine
(so called VIA PadLock ACE, Advanced Cryptography Engine)
- that provides instructions for very fast {en,de}cryption
- with some algorithms.
+ that provides instructions for very fast cryptographic
+ operations with supported algorithms.
The instructions are used only when the CPU supports them.
- Otherwise software encryption is used. If you are unsure,
- say Y.
+ Otherwise software encryption is used.
+
+ Selecting M for this option will compile a helper module
+ padlock.ko that should autoload all below configured
+ algorithms. Don't worry if your hardware does not support
+ some or all of them. In such case padlock.ko will
+ simply write a single line into the kernel log informing
+ about its failure but everything will keep working fine.
+
+ If you are unsure, say M. The compiled module will be
+ called padlock.ko
config CRYPTO_DEV_PADLOCK_AES
- bool "Support for AES in VIA PadLock"
+ tristate "PadLock driver for AES algorithm"
depends on CRYPTO_DEV_PADLOCK
- default y
+ select CRYPTO_BLKCIPHER
+ default m
help
Use VIA PadLock for AES algorithm.
+ Available in VIA C3 and newer CPUs.
+
+ If unsure say M. The compiled module will be
+ called padlock-aes.ko
+
+config CRYPTO_DEV_PADLOCK_SHA
+ tristate "PadLock driver for SHA1 and SHA256 algorithms"
+ depends on CRYPTO_DEV_PADLOCK
+ select CRYPTO_SHA1
+ select CRYPTO_SHA256
+ default m
+ help
+ Use VIA PadLock for SHA1/SHA256 algorithms.
+
+ Available in VIA C7 and newer processors.
+
+ If unsure say M. The compiled module will be
+ called padlock-sha.ko
+
endmenu